./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/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_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/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_de313269-3a6e-405d-b0aa-46521d966663/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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- 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 09:14:17,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:14:17,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:14:17,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:14:17,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:14:17,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:14:17,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:14:17,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:14:17,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:14:17,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:14:17,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:14:17,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:14:17,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:14:17,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:14:17,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:14:17,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:14:17,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:14:17,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:14:17,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:14:17,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:14:17,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:14:17,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:14:17,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:14:17,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:14:17,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:14:17,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:14:17,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:14:17,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:14:17,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:14:17,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:14:17,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:14:17,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:14:17,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:14:17,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:14:17,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:14:17,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:14:17,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:14:17,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:14:17,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:14:17,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:14:17,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:14:17,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 09:14:17,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:14:17,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:14:17,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:14:17,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:14:17,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:14:17,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:14:17,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:14:17,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:14:17,999 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:14:17,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:14:17,999 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:14:18,000 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:14:18,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:14:18,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:14:18,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:14:18,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:14:18,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:14:18,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:14:18,001 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 09:14:18,001 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:14:18,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:14:18,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:14:18,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:14:18,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:14:18,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:14:18,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:14:18,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:14:18,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:14:18,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:14:18,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:14:18,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:14:18,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:14:18,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:14:18,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:14:18,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:14:18,004 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_de313269-3a6e-405d-b0aa-46521d966663/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2022-11-21 09:14:18,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:14:18,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:14:18,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:14:18,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:14:18,341 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:14:18,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-21 09:14:21,451 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:14:21,689 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:14:21,689 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-21 09:14:21,703 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/data/870fe729b/ad86160cf4ef43899657ad48d8b3edea/FLAG4b8f24eba [2022-11-21 09:14:21,718 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/data/870fe729b/ad86160cf4ef43899657ad48d8b3edea [2022-11-21 09:14:21,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:14:21,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:14:21,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:14:21,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:14:21,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:14:21,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:14:21" (1/1) ... [2022-11-21 09:14:21,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c034ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:21, skipping insertion in model container [2022-11-21 09:14:21,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:14:21" (1/1) ... [2022-11-21 09:14:21,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:14:21,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:14:22,148 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_de313269-3a6e-405d-b0aa-46521d966663/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-21 09:14:22,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:14:22,193 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:14:22,242 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_de313269-3a6e-405d-b0aa-46521d966663/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-21 09:14:22,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:14:22,306 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:14:22,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22 WrapperNode [2022-11-21 09:14:22,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:14:22,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:14:22,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:14:22,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:14:22,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,378 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-21 09:14:22,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:14:22,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:14:22,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:14:22,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:14:22,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,405 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:14:22,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:14:22,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:14:22,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:14:22,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (1/1) ... [2022-11-21 09:14:22,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:14:22,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:14:22,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:14:22,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:14:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:14:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:14:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 09:14:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:14:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:14:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 09:14:22,514 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 09:14:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:14:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-11-21 09:14:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:14:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:14:22,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:14:22,516 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 09:14:22,704 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:14:22,706 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:14:22,957 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:14:22,965 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:14:22,965 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-21 09:14:22,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:14:22 BoogieIcfgContainer [2022-11-21 09:14:22,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:14:22,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:14:22,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:14:22,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:14:22,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:14:21" (1/3) ... [2022-11-21 09:14:22,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e157f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:14:22, skipping insertion in model container [2022-11-21 09:14:22,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:22" (2/3) ... [2022-11-21 09:14:22,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e157f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:14:22, skipping insertion in model container [2022-11-21 09:14:22,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:14:22" (3/3) ... [2022-11-21 09:14:22,977 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2022-11-21 09:14:22,986 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:14:22,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:14:22,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 09:14:22,998 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:14:23,056 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 09:14:23,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 124 transitions, 256 flow [2022-11-21 09:14:23,155 INFO L130 PetriNetUnfolder]: 21/163 cut-off events. [2022-11-21 09:14:23,156 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 09:14:23,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 21/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 84. Up to 6 conditions per place. [2022-11-21 09:14:23,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 124 transitions, 256 flow [2022-11-21 09:14:23,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 121 transitions, 250 flow [2022-11-21 09:14:23,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:14:23,187 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;@71be1c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:14:23,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-21 09:14:23,204 INFO L130 PetriNetUnfolder]: 4/66 cut-off events. [2022-11-21 09:14:23,205 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:14:23,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:23,206 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] [2022-11-21 09:14:23,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 09:14:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1019498054, now seen corresponding path program 1 times [2022-11-21 09:14:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:23,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789153345] [2022-11-21 09:14:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:23,594 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 09:14:23,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:23,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789153345] [2022-11-21 09:14:23,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789153345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:23,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:23,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:23,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936812686] [2022-11-21 09:14:23,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:23,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:23,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-11-21 09:14:23,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 121 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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 09:14:23,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:23,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-11-21 09:14:23,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:23,741 INFO L130 PetriNetUnfolder]: 1/110 cut-off events. [2022-11-21 09:14:23,741 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-21 09:14:23,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 1/110 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 41/142 useless extension candidates. Maximal degree in co-relation 77. Up to 7 conditions per place. [2022-11-21 09:14:23,744 INFO L137 encePairwiseOnDemand]: 105/124 looper letters, 10 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2022-11-21 09:14:23,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 108 transitions, 252 flow [2022-11-21 09:14:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 533 transitions. [2022-11-21 09:14:23,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596774193548387 [2022-11-21 09:14:23,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 533 transitions. [2022-11-21 09:14:23,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 533 transitions. [2022-11-21 09:14:23,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:23,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 533 transitions. [2022-11-21 09:14:23,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 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 09:14:23,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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 09:14:23,779 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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 09:14:23,781 INFO L175 Difference]: Start difference. First operand has 111 places, 121 transitions, 250 flow. Second operand 5 states and 533 transitions. [2022-11-21 09:14:23,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 108 transitions, 252 flow [2022-11-21 09:14:23,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:14:23,789 INFO L231 Difference]: Finished difference. Result has 113 places, 106 transitions, 232 flow [2022-11-21 09:14:23,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=113, PETRI_TRANSITIONS=106} [2022-11-21 09:14:23,795 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2022-11-21 09:14:23,796 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 106 transitions, 232 flow [2022-11-21 09:14:23,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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 09:14:23,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:23,797 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] [2022-11-21 09:14:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:14:23,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 09:14:23,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1610309868, now seen corresponding path program 1 times [2022-11-21 09:14:23,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:23,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327620319] [2022-11-21 09:14:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:23,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:24,002 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 09:14:24,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:24,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327620319] [2022-11-21 09:14:24,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327620319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:24,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:24,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969703574] [2022-11-21 09:14:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:24,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:24,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:24,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 124 [2022-11-21 09:14:24,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 106 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 09:14:24,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:24,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 124 [2022-11-21 09:14:24,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:24,164 INFO L130 PetriNetUnfolder]: 8/194 cut-off events. [2022-11-21 09:14:24,164 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-21 09:14:24,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 194 events. 8/194 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 534 event pairs, 4 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 180. Up to 11 conditions per place. [2022-11-21 09:14:24,167 INFO L137 encePairwiseOnDemand]: 118/124 looper letters, 10 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2022-11-21 09:14:24,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 262 flow [2022-11-21 09:14:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2022-11-21 09:14:24,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161290322580645 [2022-11-21 09:14:24,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2022-11-21 09:14:24,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2022-11-21 09:14:24,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:24,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2022-11-21 09:14:24,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 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 09:14:24,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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 09:14:24,187 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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 09:14:24,187 INFO L175 Difference]: Start difference. First operand has 113 places, 106 transitions, 232 flow. Second operand 5 states and 506 transitions. [2022-11-21 09:14:24,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 262 flow [2022-11-21 09:14:24,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:14:24,191 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 228 flow [2022-11-21 09:14:24,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2022-11-21 09:14:24,192 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-11-21 09:14:24,192 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 228 flow [2022-11-21 09:14:24,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 09:14:24,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:24,193 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] [2022-11-21 09:14:24,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:14:24,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 09:14:24,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1671198555, now seen corresponding path program 1 times [2022-11-21 09:14:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:24,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246617265] [2022-11-21 09:14:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:24,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:14:24,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:14:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:14:24,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:14:24,310 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 09:14:24,311 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-21 09:14:24,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-21 09:14:24,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-21 09:14:24,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-21 09:14:24,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-21 09:14:24,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-21 09:14:24,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-21 09:14:24,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-21 09:14:24,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-21 09:14:24,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-21 09:14:24,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-21 09:14:24,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-21 09:14:24,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-21 09:14:24,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:14:24,318 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 09:14:24,323 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 09:14:24,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 09:14:24,365 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 09:14:24,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 162 transitions, 342 flow [2022-11-21 09:14:24,416 INFO L130 PetriNetUnfolder]: 37/277 cut-off events. [2022-11-21 09:14:24,417 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 09:14:24,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 277 events. 37/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 839 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2022-11-21 09:14:24,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 162 transitions, 342 flow [2022-11-21 09:14:24,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 162 transitions, 342 flow [2022-11-21 09:14:24,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:14:24,426 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;@71be1c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:14:24,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-21 09:14:24,435 INFO L130 PetriNetUnfolder]: 4/68 cut-off events. [2022-11-21 09:14:24,435 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:14:24,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:24,435 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] [2022-11-21 09:14:24,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 09:14:24,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 903205022, now seen corresponding path program 1 times [2022-11-21 09:14:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:24,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739147340] [2022-11-21 09:14:24,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:24,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:24,501 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 09:14:24,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:24,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739147340] [2022-11-21 09:14:24,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739147340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:24,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:24,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935218658] [2022-11-21 09:14:24,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:24,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:24,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:24,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:24,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-21 09:14:24,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 162 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 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 09:14:24,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:24,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-21 09:14:24,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:24,613 INFO L130 PetriNetUnfolder]: 4/222 cut-off events. [2022-11-21 09:14:24,614 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-21 09:14:24,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 222 events. 4/222 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 538 event pairs, 0 based on Foata normal form. 127/323 useless extension candidates. Maximal degree in co-relation 147. Up to 21 conditions per place. [2022-11-21 09:14:24,616 INFO L137 encePairwiseOnDemand]: 137/162 looper letters, 19 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2022-11-21 09:14:24,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 364 flow [2022-11-21 09:14:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2022-11-21 09:14:24,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-11-21 09:14:24,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2022-11-21 09:14:24,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2022-11-21 09:14:24,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:24,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2022-11-21 09:14:24,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 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 09:14:24,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 09:14:24,625 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 09:14:24,625 INFO L175 Difference]: Start difference. First operand has 146 places, 162 transitions, 342 flow. Second operand 5 states and 698 transitions. [2022-11-21 09:14:24,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 364 flow [2022-11-21 09:14:24,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:14:24,631 INFO L231 Difference]: Finished difference. Result has 152 places, 146 transitions, 336 flow [2022-11-21 09:14:24,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=152, PETRI_TRANSITIONS=146} [2022-11-21 09:14:24,635 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2022-11-21 09:14:24,636 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 146 transitions, 336 flow [2022-11-21 09:14:24,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 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 09:14:24,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:24,640 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] [2022-11-21 09:14:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:14:24,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 09:14:24,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1456503216, now seen corresponding path program 1 times [2022-11-21 09:14:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:24,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118430144] [2022-11-21 09:14:24,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:24,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:24,770 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 09:14:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:24,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118430144] [2022-11-21 09:14:24,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118430144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:24,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:24,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:24,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28224404] [2022-11-21 09:14:24,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:24,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:24,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:24,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:24,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2022-11-21 09:14:24,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 146 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 09:14:24,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:24,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2022-11-21 09:14:24,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:25,127 INFO L130 PetriNetUnfolder]: 172/1015 cut-off events. [2022-11-21 09:14:25,127 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-21 09:14:25,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 1015 events. 172/1015 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7087 event pairs, 43 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 1350. Up to 207 conditions per place. [2022-11-21 09:14:25,141 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 36 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-21 09:14:25,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 484 flow [2022-11-21 09:14:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2022-11-21 09:14:25,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2022-11-21 09:14:25,144 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2022-11-21 09:14:25,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2022-11-21 09:14:25,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:25,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2022-11-21 09:14:25,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 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 09:14:25,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 09:14:25,150 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 09:14:25,150 INFO L175 Difference]: Start difference. First operand has 152 places, 146 transitions, 336 flow. Second operand 5 states and 666 transitions. [2022-11-21 09:14:25,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 484 flow [2022-11-21 09:14:25,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 169 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:14:25,158 INFO L231 Difference]: Finished difference. Result has 158 places, 151 transitions, 383 flow [2022-11-21 09:14:25,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=158, PETRI_TRANSITIONS=151} [2022-11-21 09:14:25,160 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-11-21 09:14:25,161 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 151 transitions, 383 flow [2022-11-21 09:14:25,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 09:14:25,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:25,162 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] [2022-11-21 09:14:25,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:14:25,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 09:14:25,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1040293091, now seen corresponding path program 1 times [2022-11-21 09:14:25,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:25,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129690595] [2022-11-21 09:14:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:25,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:25,247 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 09:14:25,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:25,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129690595] [2022-11-21 09:14:25,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129690595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:25,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:25,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804820296] [2022-11-21 09:14:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:25,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:25,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:25,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-21 09:14:25,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 151 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 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 09:14:25,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:25,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-21 09:14:25,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:25,363 INFO L130 PetriNetUnfolder]: 7/348 cut-off events. [2022-11-21 09:14:25,364 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-21 09:14:25,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 348 events. 7/348 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1224 event pairs, 0 based on Foata normal form. 16/328 useless extension candidates. Maximal degree in co-relation 295. Up to 16 conditions per place. [2022-11-21 09:14:25,369 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 11 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-21 09:14:25,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 151 transitions, 419 flow [2022-11-21 09:14:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2022-11-21 09:14:25,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8049382716049382 [2022-11-21 09:14:25,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2022-11-21 09:14:25,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2022-11-21 09:14:25,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:25,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2022-11-21 09:14:25,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 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 09:14:25,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 09:14:25,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 09:14:25,378 INFO L175 Difference]: Start difference. First operand has 158 places, 151 transitions, 383 flow. Second operand 5 states and 652 transitions. [2022-11-21 09:14:25,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 151 transitions, 419 flow [2022-11-21 09:14:25,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:14:25,383 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 400 flow [2022-11-21 09:14:25,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2022-11-21 09:14:25,387 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 15 predicate places. [2022-11-21 09:14:25,387 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 400 flow [2022-11-21 09:14:25,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 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 09:14:25,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:25,390 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] [2022-11-21 09:14:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:14:25,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 09:14:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2110652979, now seen corresponding path program 1 times [2022-11-21 09:14:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:25,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455586896] [2022-11-21 09:14:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:25,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:25,549 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 09:14:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:25,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455586896] [2022-11-21 09:14:25,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455586896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:14:25,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478091831] [2022-11-21 09:14:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:25,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:14:25,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:14:25,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:14:25,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:14:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:25,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:14:25,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:14:25,766 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 09:14:25,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:14:25,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478091831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:25,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:14:25,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 09:14:25,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884377694] [2022-11-21 09:14:25,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:25,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:14:25,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:25,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:14:25,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:14:25,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-21 09:14:25,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 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 09:14:25,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:25,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-21 09:14:25,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:25,905 INFO L130 PetriNetUnfolder]: 7/347 cut-off events. [2022-11-21 09:14:25,906 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-21 09:14:25,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 347 events. 7/347 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1217 event pairs, 0 based on Foata normal form. 9/320 useless extension candidates. Maximal degree in co-relation 296. Up to 19 conditions per place. [2022-11-21 09:14:25,910 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 15 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2022-11-21 09:14:25,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 444 flow [2022-11-21 09:14:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:14:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:14:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 911 transitions. [2022-11-21 09:14:25,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8033509700176367 [2022-11-21 09:14:25,914 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 911 transitions. [2022-11-21 09:14:25,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 911 transitions. [2022-11-21 09:14:25,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:25,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 911 transitions. [2022-11-21 09:14:25,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 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 09:14:25,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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 09:14:25,920 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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 09:14:25,920 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 400 flow. Second operand 7 states and 911 transitions. [2022-11-21 09:14:25,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 444 flow [2022-11-21 09:14:25,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 153 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 09:14:25,925 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 396 flow [2022-11-21 09:14:25,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-11-21 09:14:25,926 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 17 predicate places. [2022-11-21 09:14:25,926 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 396 flow [2022-11-21 09:14:25,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 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 09:14:25,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:25,927 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] [2022-11-21 09:14:25,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:14:26,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:14:26,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 09:14:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1140156123, now seen corresponding path program 1 times [2022-11-21 09:14:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:26,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034535077] [2022-11-21 09:14:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:26,295 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 09:14:26,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:26,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034535077] [2022-11-21 09:14:26,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034535077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:26,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:26,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296183076] [2022-11-21 09:14:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:26,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:14:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:14:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:14:26,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 162 [2022-11-21 09:14:26,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 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 09:14:26,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:26,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 162 [2022-11-21 09:14:26,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:26,806 INFO L130 PetriNetUnfolder]: 344/1721 cut-off events. [2022-11-21 09:14:26,806 INFO L131 PetriNetUnfolder]: For 316/322 co-relation queries the response was YES. [2022-11-21 09:14:26,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1721 events. 344/1721 cut-off events. For 316/322 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 13984 event pairs, 70 based on Foata normal form. 3/1515 useless extension candidates. Maximal degree in co-relation 1917. Up to 237 conditions per place. [2022-11-21 09:14:26,824 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 60 selfloop transitions, 19 changer transitions 0/200 dead transitions. [2022-11-21 09:14:26,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 200 transitions, 704 flow [2022-11-21 09:14:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:14:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:14:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2022-11-21 09:14:26,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901234567901234 [2022-11-21 09:14:26,828 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2022-11-21 09:14:26,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2022-11-21 09:14:26,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:26,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2022-11-21 09:14:26,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 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 09:14:26,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 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 09:14:26,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 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 09:14:26,836 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 396 flow. Second operand 9 states and 1152 transitions. [2022-11-21 09:14:26,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 200 transitions, 704 flow [2022-11-21 09:14:26,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 200 transitions, 693 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 09:14:26,842 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 511 flow [2022-11-21 09:14:26,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-11-21 09:14:26,843 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2022-11-21 09:14:26,843 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 511 flow [2022-11-21 09:14:26,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 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 09:14:26,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:26,844 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] [2022-11-21 09:14:26,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:14:26,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 09:14:26,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash -985100920, now seen corresponding path program 1 times [2022-11-21 09:14:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:26,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95117059] [2022-11-21 09:14:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:26,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:26,939 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 09:14:26,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:26,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95117059] [2022-11-21 09:14:26,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95117059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:26,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:26,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:26,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642772289] [2022-11-21 09:14:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:26,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:14:26,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:14:26,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:14:26,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 162 [2022-11-21 09:14:26,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 511 flow. Second operand has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 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 09:14:26,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:26,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 162 [2022-11-21 09:14:26,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:27,428 INFO L130 PetriNetUnfolder]: 321/1611 cut-off events. [2022-11-21 09:14:27,428 INFO L131 PetriNetUnfolder]: For 964/999 co-relation queries the response was YES. [2022-11-21 09:14:27,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1611 events. 321/1611 cut-off events. For 964/999 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12861 event pairs, 77 based on Foata normal form. 42/1491 useless extension candidates. Maximal degree in co-relation 2149. Up to 272 conditions per place. [2022-11-21 09:14:27,447 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 65 selfloop transitions, 19 changer transitions 0/205 dead transitions. [2022-11-21 09:14:27,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 205 transitions, 846 flow [2022-11-21 09:14:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:14:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:14:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1154 transitions. [2022-11-21 09:14:27,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7914951989026063 [2022-11-21 09:14:27,451 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1154 transitions. [2022-11-21 09:14:27,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1154 transitions. [2022-11-21 09:14:27,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:27,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1154 transitions. [2022-11-21 09:14:27,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.22222222222223) internal successors, (1154), 9 states have internal predecessors, (1154), 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 09:14:27,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 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 09:14:27,460 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 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 09:14:27,460 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 511 flow. Second operand 9 states and 1154 transitions. [2022-11-21 09:14:27,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 205 transitions, 846 flow [2022-11-21 09:14:27,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 205 transitions, 805 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-21 09:14:27,470 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 558 flow [2022-11-21 09:14:27,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2022-11-21 09:14:27,472 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 32 predicate places. [2022-11-21 09:14:27,472 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 558 flow [2022-11-21 09:14:27,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 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 09:14:27,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:27,473 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] [2022-11-21 09:14:27,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:14:27,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 09:14:27,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1027740495, now seen corresponding path program 1 times [2022-11-21 09:14:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:27,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95674763] [2022-11-21 09:14:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 09:14:27,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:27,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95674763] [2022-11-21 09:14:27,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95674763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:27,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:27,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:27,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537677124] [2022-11-21 09:14:27,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:27,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:27,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:27,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2022-11-21 09:14:27,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 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 09:14:27,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:27,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2022-11-21 09:14:27,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:28,018 INFO L130 PetriNetUnfolder]: 270/1942 cut-off events. [2022-11-21 09:14:28,019 INFO L131 PetriNetUnfolder]: For 1155/1202 co-relation queries the response was YES. [2022-11-21 09:14:28,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1942 events. 270/1942 cut-off events. For 1155/1202 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16720 event pairs, 127 based on Foata normal form. 24/1761 useless extension candidates. Maximal degree in co-relation 2554. Up to 362 conditions per place. [2022-11-21 09:14:28,041 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 55 selfloop transitions, 7 changer transitions 0/192 dead transitions. [2022-11-21 09:14:28,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 192 transitions, 820 flow [2022-11-21 09:14:28,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2022-11-21 09:14:28,044 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197530864197531 [2022-11-21 09:14:28,044 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2022-11-21 09:14:28,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2022-11-21 09:14:28,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:28,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2022-11-21 09:14:28,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 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 09:14:28,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 09:14:28,049 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 09:14:28,049 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 558 flow. Second operand 5 states and 664 transitions. [2022-11-21 09:14:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 192 transitions, 820 flow [2022-11-21 09:14:28,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 192 transitions, 792 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 09:14:28,057 INFO L231 Difference]: Finished difference. Result has 181 places, 169 transitions, 588 flow [2022-11-21 09:14:28,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2022-11-21 09:14:28,059 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 35 predicate places. [2022-11-21 09:14:28,059 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 588 flow [2022-11-21 09:14:28,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 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 09:14:28,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:28,060 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-21 09:14:28,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:14:28,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 09:14:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2070742754, now seen corresponding path program 1 times [2022-11-21 09:14:28,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:28,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96646587] [2022-11-21 09:14:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:28,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:14:28,077 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:14:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:14:28,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:14:28,093 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 09:14:28,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-21 09:14:28,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-21 09:14:28,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-21 09:14:28,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-21 09:14:28,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-21 09:14:28,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-21 09:14:28,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-21 09:14:28,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-21 09:14:28,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-21 09:14:28,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-21 09:14:28,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-21 09:14:28,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-21 09:14:28,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-21 09:14:28,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-21 09:14:28,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-21 09:14:28,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-21 09:14:28,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-21 09:14:28,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 09:14:28,097 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:28,098 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 09:14:28,098 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 09:14:28,124 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 09:14:28,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 200 transitions, 430 flow [2022-11-21 09:14:28,184 INFO L130 PetriNetUnfolder]: 58/432 cut-off events. [2022-11-21 09:14:28,185 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 09:14:28,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 432 events. 58/432 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1482 event pairs, 1 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2022-11-21 09:14:28,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 200 transitions, 430 flow [2022-11-21 09:14:28,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 200 transitions, 430 flow [2022-11-21 09:14:28,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:14:28,196 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;@71be1c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:14:28,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-21 09:14:28,202 INFO L130 PetriNetUnfolder]: 4/68 cut-off events. [2022-11-21 09:14:28,202 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:14:28,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:28,202 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] [2022-11-21 09:14:28,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash 511850946, now seen corresponding path program 1 times [2022-11-21 09:14:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:28,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871936994] [2022-11-21 09:14:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:28,260 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 09:14:28,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:28,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871936994] [2022-11-21 09:14:28,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871936994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:28,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:28,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302916461] [2022-11-21 09:14:28,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:28,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:28,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:28,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-21 09:14:28,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 200 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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 09:14:28,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:28,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-21 09:14:28,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:28,392 INFO L130 PetriNetUnfolder]: 10/361 cut-off events. [2022-11-21 09:14:28,392 INFO L131 PetriNetUnfolder]: For 43/99 co-relation queries the response was YES. [2022-11-21 09:14:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 361 events. 10/361 cut-off events. For 43/99 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1149 event pairs, 1 based on Foata normal form. 308/622 useless extension candidates. Maximal degree in co-relation 269. Up to 40 conditions per place. [2022-11-21 09:14:28,396 INFO L137 encePairwiseOnDemand]: 169/200 looper letters, 21 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2022-11-21 09:14:28,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 182 transitions, 444 flow [2022-11-21 09:14:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2022-11-21 09:14:28,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.856 [2022-11-21 09:14:28,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2022-11-21 09:14:28,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2022-11-21 09:14:28,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:28,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2022-11-21 09:14:28,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 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 09:14:28,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:14:28,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:14:28,406 INFO L175 Difference]: Start difference. First operand has 179 places, 200 transitions, 430 flow. Second operand 5 states and 856 transitions. [2022-11-21 09:14:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 182 transitions, 444 flow [2022-11-21 09:14:28,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 182 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:14:28,410 INFO L231 Difference]: Finished difference. Result has 185 places, 178 transitions, 412 flow [2022-11-21 09:14:28,410 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=185, PETRI_TRANSITIONS=178} [2022-11-21 09:14:28,411 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 6 predicate places. [2022-11-21 09:14:28,411 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 178 transitions, 412 flow [2022-11-21 09:14:28,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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 09:14:28,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:28,412 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] [2022-11-21 09:14:28,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 09:14:28,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1125952652, now seen corresponding path program 1 times [2022-11-21 09:14:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:28,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564495093] [2022-11-21 09:14:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:28,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:28,468 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 09:14:28,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:28,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564495093] [2022-11-21 09:14:28,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564495093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:28,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:28,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419370560] [2022-11-21 09:14:28,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:28,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-21 09:14:28,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 178 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 09:14:28,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:28,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-21 09:14:28,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:30,019 INFO L130 PetriNetUnfolder]: 1861/7910 cut-off events. [2022-11-21 09:14:30,019 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2022-11-21 09:14:30,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 7910 events. 1861/7910 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 86948 event pairs, 654 based on Foata normal form. 0/6973 useless extension candidates. Maximal degree in co-relation 11208. Up to 1995 conditions per place. [2022-11-21 09:14:30,116 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 52 selfloop transitions, 8 changer transitions 0/213 dead transitions. [2022-11-21 09:14:30,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 644 flow [2022-11-21 09:14:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2022-11-21 09:14:30,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.814 [2022-11-21 09:14:30,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2022-11-21 09:14:30,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2022-11-21 09:14:30,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:30,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2022-11-21 09:14:30,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 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 09:14:30,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:14:30,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:14:30,125 INFO L175 Difference]: Start difference. First operand has 185 places, 178 transitions, 412 flow. Second operand 5 states and 814 transitions. [2022-11-21 09:14:30,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 644 flow [2022-11-21 09:14:30,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 213 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:14:30,131 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 474 flow [2022-11-21 09:14:30,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-21 09:14:30,133 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 12 predicate places. [2022-11-21 09:14:30,133 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 474 flow [2022-11-21 09:14:30,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 09:14:30,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:30,134 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] [2022-11-21 09:14:30,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:14:30,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:30,135 INFO L85 PathProgramCache]: Analyzing trace with hash 863787621, now seen corresponding path program 1 times [2022-11-21 09:14:30,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:30,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497734613] [2022-11-21 09:14:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:30,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:30,193 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 09:14:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:30,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497734613] [2022-11-21 09:14:30,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497734613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:30,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:30,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322763591] [2022-11-21 09:14:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:30,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:30,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:30,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-21 09:14:30,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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 09:14:30,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:30,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-21 09:14:30,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:30,486 INFO L130 PetriNetUnfolder]: 40/864 cut-off events. [2022-11-21 09:14:30,486 INFO L131 PetriNetUnfolder]: For 172/382 co-relation queries the response was YES. [2022-11-21 09:14:30,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 864 events. 40/864 cut-off events. For 172/382 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5228 event pairs, 7 based on Foata normal form. 41/791 useless extension candidates. Maximal degree in co-relation 777. Up to 52 conditions per place. [2022-11-21 09:14:30,502 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 13 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2022-11-21 09:14:30,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 185 transitions, 514 flow [2022-11-21 09:14:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:30,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 804 transitions. [2022-11-21 09:14:30,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.804 [2022-11-21 09:14:30,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 804 transitions. [2022-11-21 09:14:30,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 804 transitions. [2022-11-21 09:14:30,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:30,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 804 transitions. [2022-11-21 09:14:30,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 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 09:14:30,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:14:30,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:14:30,512 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 474 flow. Second operand 5 states and 804 transitions. [2022-11-21 09:14:30,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 185 transitions, 514 flow [2022-11-21 09:14:30,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 185 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:14:30,517 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 490 flow [2022-11-21 09:14:30,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2022-11-21 09:14:30,518 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 15 predicate places. [2022-11-21 09:14:30,518 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 490 flow [2022-11-21 09:14:30,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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 09:14:30,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:30,519 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] [2022-11-21 09:14:30,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 09:14:30,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1007613107, now seen corresponding path program 1 times [2022-11-21 09:14:30,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:30,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709156434] [2022-11-21 09:14:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:30,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:30,628 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 09:14:30,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:30,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709156434] [2022-11-21 09:14:30,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709156434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:14:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078042556] [2022-11-21 09:14:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:30,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:14:30,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:14:30,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:14:30,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:14:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:30,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:14:30,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:14:30,815 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 09:14:30,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:14:30,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078042556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:30,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:14:30,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 09:14:30,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31841719] [2022-11-21 09:14:30,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:30,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:14:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:14:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:14:30,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-21 09:14:30,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 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 09:14:30,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:30,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-21 09:14:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:31,124 INFO L130 PetriNetUnfolder]: 40/862 cut-off events. [2022-11-21 09:14:31,125 INFO L131 PetriNetUnfolder]: For 186/379 co-relation queries the response was YES. [2022-11-21 09:14:31,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 862 events. 40/862 cut-off events. For 186/379 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5215 event pairs, 7 based on Foata normal form. 18/766 useless extension candidates. Maximal degree in co-relation 777. Up to 58 conditions per place. [2022-11-21 09:14:31,136 INFO L137 encePairwiseOnDemand]: 195/200 looper letters, 17 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-11-21 09:14:31,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 187 transitions, 538 flow [2022-11-21 09:14:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:14:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:14:31,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1123 transitions. [2022-11-21 09:14:31,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021428571428572 [2022-11-21 09:14:31,140 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1123 transitions. [2022-11-21 09:14:31,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1123 transitions. [2022-11-21 09:14:31,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:31,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1123 transitions. [2022-11-21 09:14:31,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.42857142857142) internal successors, (1123), 7 states have internal predecessors, (1123), 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 09:14:31,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 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 09:14:31,147 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 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 09:14:31,147 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 490 flow. Second operand 7 states and 1123 transitions. [2022-11-21 09:14:31,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 187 transitions, 538 flow [2022-11-21 09:14:31,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 187 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 09:14:31,151 INFO L231 Difference]: Finished difference. Result has 196 places, 184 transitions, 486 flow [2022-11-21 09:14:31,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=196, PETRI_TRANSITIONS=184} [2022-11-21 09:14:31,152 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 17 predicate places. [2022-11-21 09:14:31,153 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 184 transitions, 486 flow [2022-11-21 09:14:31,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 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 09:14:31,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:31,153 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] [2022-11-21 09:14:31,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:14:31,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 09:14:31,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1205128593, now seen corresponding path program 1 times [2022-11-21 09:14:31,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:31,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863380783] [2022-11-21 09:14:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:31,467 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 09:14:31,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:31,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863380783] [2022-11-21 09:14:31,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863380783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:31,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:31,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:31,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68744084] [2022-11-21 09:14:31,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:31,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:14:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:14:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:14:31,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-21 09:14:31,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 184 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 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 09:14:31,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:31,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-21 09:14:31,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:34,438 INFO L130 PetriNetUnfolder]: 4008/14681 cut-off events. [2022-11-21 09:14:34,439 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-21 09:14:34,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23608 conditions, 14681 events. 4008/14681 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 175981 event pairs, 971 based on Foata normal form. 0/13074 useless extension candidates. Maximal degree in co-relation 20360. Up to 2727 conditions per place. [2022-11-21 09:14:34,711 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 100 selfloop transitions, 27 changer transitions 0/274 dead transitions. [2022-11-21 09:14:34,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 274 transitions, 1066 flow [2022-11-21 09:14:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:14:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:14:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1434 transitions. [2022-11-21 09:14:34,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2022-11-21 09:14:34,716 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1434 transitions. [2022-11-21 09:14:34,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1434 transitions. [2022-11-21 09:14:34,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:34,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1434 transitions. [2022-11-21 09:14:34,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.33333333333334) internal successors, (1434), 9 states have internal predecessors, (1434), 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 09:14:34,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 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 09:14:34,725 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 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 09:14:34,725 INFO L175 Difference]: Start difference. First operand has 196 places, 184 transitions, 486 flow. Second operand 9 states and 1434 transitions. [2022-11-21 09:14:34,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 274 transitions, 1066 flow [2022-11-21 09:14:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 274 transitions, 1055 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 09:14:34,736 INFO L231 Difference]: Finished difference. Result has 205 places, 203 transitions, 679 flow [2022-11-21 09:14:34,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=679, PETRI_PLACES=205, PETRI_TRANSITIONS=203} [2022-11-21 09:14:34,738 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 26 predicate places. [2022-11-21 09:14:34,738 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 203 transitions, 679 flow [2022-11-21 09:14:34,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 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 09:14:34,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:34,739 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] [2022-11-21 09:14:34,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 09:14:34,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1295718484, now seen corresponding path program 1 times [2022-11-21 09:14:34,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:34,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133839349] [2022-11-21 09:14:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:34,840 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 09:14:34,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:34,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133839349] [2022-11-21 09:14:34,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133839349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:34,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:34,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:34,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524619433] [2022-11-21 09:14:34,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:34,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:14:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:34,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:14:34,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:14:34,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-21 09:14:34,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 203 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 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 09:14:34,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:34,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-21 09:14:34,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:37,611 INFO L130 PetriNetUnfolder]: 3817/13588 cut-off events. [2022-11-21 09:14:37,612 INFO L131 PetriNetUnfolder]: For 12657/12881 co-relation queries the response was YES. [2022-11-21 09:14:37,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27218 conditions, 13588 events. 3817/13588 cut-off events. For 12657/12881 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 158874 event pairs, 1099 based on Foata normal form. 248/12467 useless extension candidates. Maximal degree in co-relation 20418. Up to 2976 conditions per place. [2022-11-21 09:14:37,786 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 107 selfloop transitions, 27 changer transitions 0/281 dead transitions. [2022-11-21 09:14:37,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 281 transitions, 1324 flow [2022-11-21 09:14:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:14:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:14:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1432 transitions. [2022-11-21 09:14:37,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2022-11-21 09:14:37,791 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1432 transitions. [2022-11-21 09:14:37,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1432 transitions. [2022-11-21 09:14:37,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:37,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1432 transitions. [2022-11-21 09:14:37,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.11111111111111) internal successors, (1432), 9 states have internal predecessors, (1432), 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 09:14:37,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 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 09:14:37,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 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 09:14:37,800 INFO L175 Difference]: Start difference. First operand has 205 places, 203 transitions, 679 flow. Second operand 9 states and 1432 transitions. [2022-11-21 09:14:37,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 281 transitions, 1324 flow [2022-11-21 09:14:37,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 281 transitions, 1257 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-21 09:14:37,842 INFO L231 Difference]: Finished difference. Result has 211 places, 211 transitions, 760 flow [2022-11-21 09:14:37,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=760, PETRI_PLACES=211, PETRI_TRANSITIONS=211} [2022-11-21 09:14:37,843 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 32 predicate places. [2022-11-21 09:14:37,843 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 211 transitions, 760 flow [2022-11-21 09:14:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 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 09:14:37,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:37,845 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] [2022-11-21 09:14:37,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 09:14:37,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash -105134441, now seen corresponding path program 1 times [2022-11-21 09:14:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:37,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518441365] [2022-11-21 09:14:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 09:14:37,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:37,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518441365] [2022-11-21 09:14:37,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518441365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:37,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:37,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:37,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448217583] [2022-11-21 09:14:37,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:37,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:37,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:37,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:37,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:37,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-21 09:14:37,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 211 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 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 09:14:37,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:37,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-21 09:14:37,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:41,094 INFO L130 PetriNetUnfolder]: 4340/18329 cut-off events. [2022-11-21 09:14:41,094 INFO L131 PetriNetUnfolder]: For 16954/17324 co-relation queries the response was YES. [2022-11-21 09:14:41,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35989 conditions, 18329 events. 4340/18329 cut-off events. For 16954/17324 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 236506 event pairs, 1561 based on Foata normal form. 212/16628 useless extension candidates. Maximal degree in co-relation 32398. Up to 4797 conditions per place. [2022-11-21 09:14:41,332 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 93 selfloop transitions, 11 changer transitions 0/260 dead transitions. [2022-11-21 09:14:41,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 260 transitions, 1276 flow [2022-11-21 09:14:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:14:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:14:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2022-11-21 09:14:41,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.812 [2022-11-21 09:14:41,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2022-11-21 09:14:41,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2022-11-21 09:14:41,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:41,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2022-11-21 09:14:41,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 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 09:14:41,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:14:41,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:14:41,343 INFO L175 Difference]: Start difference. First operand has 211 places, 211 transitions, 760 flow. Second operand 5 states and 812 transitions. [2022-11-21 09:14:41,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 260 transitions, 1276 flow [2022-11-21 09:14:41,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 260 transitions, 1234 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 09:14:41,413 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 810 flow [2022-11-21 09:14:41,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=810, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2022-11-21 09:14:41,414 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 35 predicate places. [2022-11-21 09:14:41,414 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 810 flow [2022-11-21 09:14:41,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 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 09:14:41,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:41,415 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:41,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 09:14:41,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:41,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:41,416 INFO L85 PathProgramCache]: Analyzing trace with hash 395203974, now seen corresponding path program 1 times [2022-11-21 09:14:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:41,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288890554] [2022-11-21 09:14:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 09:14:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:41,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288890554] [2022-11-21 09:14:41,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288890554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:41,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:41,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:41,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100141767] [2022-11-21 09:14:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:41,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:14:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:14:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:14:41,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-21 09:14:41,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 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 09:14:41,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:41,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-21 09:14:41,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:48,279 INFO L130 PetriNetUnfolder]: 9322/35901 cut-off events. [2022-11-21 09:14:48,280 INFO L131 PetriNetUnfolder]: For 32647/33945 co-relation queries the response was YES. [2022-11-21 09:14:48,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71736 conditions, 35901 events. 9322/35901 cut-off events. For 32647/33945 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 505660 event pairs, 3511 based on Foata normal form. 441/32657 useless extension candidates. Maximal degree in co-relation 49469. Up to 7067 conditions per place. [2022-11-21 09:14:49,026 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 149 selfloop transitions, 46 changer transitions 0/346 dead transitions. [2022-11-21 09:14:49,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 346 transitions, 1956 flow [2022-11-21 09:14:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:14:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:14:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1431 transitions. [2022-11-21 09:14:49,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.795 [2022-11-21 09:14:49,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1431 transitions. [2022-11-21 09:14:49,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1431 transitions. [2022-11-21 09:14:49,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:49,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1431 transitions. [2022-11-21 09:14:49,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 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 09:14:49,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 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 09:14:49,046 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 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 09:14:49,046 INFO L175 Difference]: Start difference. First operand has 214 places, 216 transitions, 810 flow. Second operand 9 states and 1431 transitions. [2022-11-21 09:14:49,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 346 transitions, 1956 flow [2022-11-21 09:14:49,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 346 transitions, 1950 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:14:49,263 INFO L231 Difference]: Finished difference. Result has 227 places, 251 transitions, 1294 flow [2022-11-21 09:14:49,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=227, PETRI_TRANSITIONS=251} [2022-11-21 09:14:49,264 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 48 predicate places. [2022-11-21 09:14:49,265 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 251 transitions, 1294 flow [2022-11-21 09:14:49,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 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 09:14:49,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:49,266 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:49,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 09:14:49,266 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -340374907, now seen corresponding path program 1 times [2022-11-21 09:14:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:49,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683354823] [2022-11-21 09:14:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:14:49,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:49,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683354823] [2022-11-21 09:14:49,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683354823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:14:49,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219589810] [2022-11-21 09:14:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:49,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:14:49,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:14:49,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:14:49,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 09:14:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:49,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:14:49,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:14:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:14:49,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:14:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:14:49,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219589810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:14:49,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:14:49,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-21 09:14:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71427490] [2022-11-21 09:14:49,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:14:49,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 09:14:49,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:49,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 09:14:49,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:14:49,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 200 [2022-11-21 09:14:49,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 251 transitions, 1294 flow. Second operand has 14 states, 14 states have (on average 115.92857142857143) internal successors, (1623), 14 states have internal predecessors, (1623), 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 09:14:49,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:49,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 200 [2022-11-21 09:14:49,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:58,721 INFO L130 PetriNetUnfolder]: 8824/42171 cut-off events. [2022-11-21 09:14:58,721 INFO L131 PetriNetUnfolder]: For 46820/47698 co-relation queries the response was YES. [2022-11-21 09:14:58,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78962 conditions, 42171 events. 8824/42171 cut-off events. For 46820/47698 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 607688 event pairs, 1645 based on Foata normal form. 2454/40631 useless extension candidates. Maximal degree in co-relation 64347. Up to 6345 conditions per place. [2022-11-21 09:14:59,120 INFO L137 encePairwiseOnDemand]: 175/200 looper letters, 489 selfloop transitions, 232 changer transitions 0/839 dead transitions. [2022-11-21 09:14:59,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 839 transitions, 5583 flow [2022-11-21 09:14:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 09:14:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 09:14:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5664 transitions. [2022-11-21 09:14:59,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6293333333333333 [2022-11-21 09:14:59,144 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5664 transitions. [2022-11-21 09:14:59,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5664 transitions. [2022-11-21 09:14:59,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:59,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5664 transitions. [2022-11-21 09:14:59,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 125.86666666666666) internal successors, (5664), 45 states have internal predecessors, (5664), 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 09:14:59,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 200.0) internal successors, (9200), 46 states have internal predecessors, (9200), 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 09:14:59,182 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 200.0) internal successors, (9200), 46 states have internal predecessors, (9200), 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 09:14:59,182 INFO L175 Difference]: Start difference. First operand has 227 places, 251 transitions, 1294 flow. Second operand 45 states and 5664 transitions. [2022-11-21 09:14:59,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 839 transitions, 5583 flow [2022-11-21 09:14:59,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 839 transitions, 5516 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-21 09:14:59,455 INFO L231 Difference]: Finished difference. Result has 287 places, 440 transitions, 3405 flow [2022-11-21 09:14:59,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3405, PETRI_PLACES=287, PETRI_TRANSITIONS=440} [2022-11-21 09:14:59,456 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 108 predicate places. [2022-11-21 09:14:59,456 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 440 transitions, 3405 flow [2022-11-21 09:14:59,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.92857142857143) internal successors, (1623), 14 states have internal predecessors, (1623), 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 09:14:59,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:59,457 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:59,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 09:14:59,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de313269-3a6e-405d-b0aa-46521d966663/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:14:59,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:14:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash -633577969, now seen corresponding path program 1 times [2022-11-21 09:14:59,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:59,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615779277] [2022-11-21 09:14:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 09:14:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:59,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615779277] [2022-11-21 09:14:59,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615779277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:59,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:59,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552602817] [2022-11-21 09:14:59,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:14:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:14:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:14:59,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-21 09:14:59,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 440 transitions, 3405 flow. Second operand has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 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 09:14:59,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:59,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-21 09:14:59,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:15:05,366 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([782] t_funEXIT-->L711-5: Formula: (= v_t_funThread2of3ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_13|} AuxVars[] AssignedVars[][317], [Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 904#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 878#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 420#true, Black: 888#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 892#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 876#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 894#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 882#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 902#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 412#(= ~global~0 0), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 898#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 874#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 868#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 886#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 870#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), 935#true, 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), t_funThread3of3ForFork0NotInUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), 400#(<= 1 |t_funThread1of3ForFork0_#t~post7|), Black: 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 194#(= ~global~0 0), 88#L701-16true, Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 852#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 202#true, 8#L711-5true]) [2022-11-21 09:15:05,367 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-21 09:15:05,367 INFO L386 tUnfolder$Statistics]: existing Event has 164 ancestors and is cut-off event [2022-11-21 09:15:05,367 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 09:15:05,367 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 09:15:05,459 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][401], [395#true, 161#L701-16true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 904#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 878#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 888#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 892#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 876#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 894#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 882#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 940#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 902#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 412#(= ~global~0 0), Black: 898#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 874#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 868#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 886#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 870#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), Black: 420#true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 852#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 202#true, 8#L711-5true]) [2022-11-21 09:15:05,460 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-21 09:15:05,460 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 09:15:05,460 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 09:15:05,460 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 09:15:05,496 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][216], [395#true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 904#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 878#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 888#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 892#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 876#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 894#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 882#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 902#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 412#(= ~global~0 0), 424#(<= ~global~0 1), Black: 898#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 874#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 868#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 886#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 870#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), 935#true, 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 420#true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 852#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 168#L701-17true, 202#true, 8#L711-5true]) [2022-11-21 09:15:05,496 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-11-21 09:15:05,496 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-21 09:15:05,496 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-21 09:15:05,496 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-21 09:15:05,557 INFO L130 PetriNetUnfolder]: 3635/26629 cut-off events. [2022-11-21 09:15:05,558 INFO L131 PetriNetUnfolder]: For 59722/60907 co-relation queries the response was YES. [2022-11-21 09:15:05,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53689 conditions, 26629 events. 3635/26629 cut-off events. For 59722/60907 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 388249 event pairs, 1522 based on Foata normal form. 416/23890 useless extension candidates. Maximal degree in co-relation 52726. Up to 4595 conditions per place. [2022-11-21 09:15:05,893 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 219 selfloop transitions, 63 changer transitions 0/514 dead transitions. [2022-11-21 09:15:05,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 514 transitions, 4562 flow [2022-11-21 09:15:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:15:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:15:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1425 transitions. [2022-11-21 09:15:05,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-11-21 09:15:05,898 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1425 transitions. [2022-11-21 09:15:05,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1425 transitions. [2022-11-21 09:15:05,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:15:05,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1425 transitions. [2022-11-21 09:15:05,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.33333333333334) internal successors, (1425), 9 states have internal predecessors, (1425), 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 09:15:05,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 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 09:15:05,906 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 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 09:15:05,907 INFO L175 Difference]: Start difference. First operand has 287 places, 440 transitions, 3405 flow. Second operand 9 states and 1425 transitions. [2022-11-21 09:15:05,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 514 transitions, 4562 flow [2022-11-21 09:15:06,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 514 transitions, 4110 flow, removed 178 selfloop flow, removed 9 redundant places. [2022-11-21 09:15:06,211 INFO L231 Difference]: Finished difference. Result has 287 places, 442 transitions, 3158 flow [2022-11-21 09:15:06,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3158, PETRI_PLACES=287, PETRI_TRANSITIONS=442} [2022-11-21 09:15:06,212 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 108 predicate places. [2022-11-21 09:15:06,212 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 442 transitions, 3158 flow [2022-11-21 09:15:06,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 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 09:15:06,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:15:06,214 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-21 09:15:06,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 09:15:06,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:15:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1382548027, now seen corresponding path program 1 times [2022-11-21 09:15:06,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:06,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643848300] [2022-11-21 09:15:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 09:15:06,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:06,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643848300] [2022-11-21 09:15:06,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643848300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:06,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:06,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:15:06,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072136083] [2022-11-21 09:15:06,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:06,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:15:06,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:06,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:15:06,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:15:06,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-21 09:15:06,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 442 transitions, 3158 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 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 09:15:06,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:15:06,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-21 09:15:06,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:15:11,659 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][206], [395#true, 161#L701-16true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 904#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 878#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 888#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 892#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 876#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 894#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 882#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 940#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 902#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 412#(= ~global~0 0), Black: 898#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 874#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 868#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 886#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 870#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 946#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), 949#true, Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 852#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 202#true, 8#L711-5true]) [2022-11-21 09:15:11,659 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-21 09:15:11,659 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 09:15:11,659 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 09:15:11,659 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 09:15:11,778 INFO L130 PetriNetUnfolder]: 2995/24018 cut-off events. [2022-11-21 09:15:11,778 INFO L131 PetriNetUnfolder]: For 49379/50490 co-relation queries the response was YES. [2022-11-21 09:15:12,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47295 conditions, 24018 events. 2995/24018 cut-off events. For 49379/50490 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 350940 event pairs, 1358 based on Foata normal form. 394/21441 useless extension candidates. Maximal degree in co-relation 46307. Up to 4575 conditions per place. [2022-11-21 09:15:12,082 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 201 selfloop transitions, 15 changer transitions 0/488 dead transitions. [2022-11-21 09:15:12,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 488 transitions, 4058 flow [2022-11-21 09:15:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:15:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:15:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 810 transitions. [2022-11-21 09:15:12,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81 [2022-11-21 09:15:12,084 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 810 transitions. [2022-11-21 09:15:12,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 810 transitions. [2022-11-21 09:15:12,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:15:12,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 810 transitions. [2022-11-21 09:15:12,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 09:15:12,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:15:12,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 09:15:12,089 INFO L175 Difference]: Start difference. First operand has 287 places, 442 transitions, 3158 flow. Second operand 5 states and 810 transitions. [2022-11-21 09:15:12,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 488 transitions, 4058 flow [2022-11-21 09:15:12,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 488 transitions, 3970 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-21 09:15:12,262 INFO L231 Difference]: Finished difference. Result has 290 places, 446 transitions, 3174 flow [2022-11-21 09:15:12,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3174, PETRI_PLACES=290, PETRI_TRANSITIONS=446} [2022-11-21 09:15:12,263 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 111 predicate places. [2022-11-21 09:15:12,263 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 446 transitions, 3174 flow [2022-11-21 09:15:12,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 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 09:15:12,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:15:12,264 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 09:15:12,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 09:15:12,264 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 09:15:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:12,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1656253966, now seen corresponding path program 1 times [2022-11-21 09:15:12,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:12,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58640377] [2022-11-21 09:15:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:12,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:15:12,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:15:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:15:12,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:15:12,298 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 09:15:12,298 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-21 09:15:12,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-21 09:15:12,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-21 09:15:12,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-21 09:15:12,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-21 09:15:12,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-21 09:15:12,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-21 09:15:12,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-21 09:15:12,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-21 09:15:12,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-21 09:15:12,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-21 09:15:12,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-21 09:15:12,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-21 09:15:12,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-21 09:15:12,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-21 09:15:12,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-21 09:15:12,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-21 09:15:12,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-21 09:15:12,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-21 09:15:12,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-21 09:15:12,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-21 09:15:12,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 09:15:12,303 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:12,303 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 09:15:12,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-21 09:15:12,329 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 09:15:12,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 238 transitions, 520 flow [2022-11-21 09:15:12,422 INFO L130 PetriNetUnfolder]: 91/671 cut-off events. [2022-11-21 09:15:12,422 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-21 09:15:12,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 671 events. 91/671 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2639 event pairs, 6 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 452. Up to 32 conditions per place. [2022-11-21 09:15:12,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 238 transitions, 520 flow [2022-11-21 09:15:12,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 238 transitions, 520 flow [2022-11-21 09:15:12,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:15:12,439 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;@71be1c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:15:12,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-21 09:15:12,444 INFO L130 PetriNetUnfolder]: 4/67 cut-off events. [2022-11-21 09:15:12,444 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:15:12,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:15:12,445 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] [2022-11-21 09:15:12,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 09:15:12,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:12,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2101407014, now seen corresponding path program 1 times [2022-11-21 09:15:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:12,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431972448] [2022-11-21 09:15:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:12,487 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 09:15:12,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431972448] [2022-11-21 09:15:12,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431972448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:12,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:12,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:15:12,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842914485] [2022-11-21 09:15:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:12,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:15:12,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:15:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:15:12,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-21 09:15:12,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 238 transitions, 520 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 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 09:15:12,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:15:12,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-21 09:15:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:15:12,642 INFO L130 PetriNetUnfolder]: 24/580 cut-off events. [2022-11-21 09:15:12,642 INFO L131 PetriNetUnfolder]: For 143/273 co-relation queries the response was YES. [2022-11-21 09:15:12,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 580 events. 24/580 cut-off events. For 143/273 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2382 event pairs, 6 based on Foata normal form. 632/1132 useless extension candidates. Maximal degree in co-relation 441. Up to 71 conditions per place. [2022-11-21 09:15:12,650 INFO L137 encePairwiseOnDemand]: 201/238 looper letters, 23 selfloop transitions, 4 changer transitions 0/214 dead transitions. [2022-11-21 09:15:12,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 526 flow [2022-11-21 09:15:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:15:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:15:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1014 transitions. [2022-11-21 09:15:12,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521008403361344 [2022-11-21 09:15:12,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1014 transitions. [2022-11-21 09:15:12,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1014 transitions. [2022-11-21 09:15:12,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:15:12,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1014 transitions. [2022-11-21 09:15:12,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.8) internal successors, (1014), 5 states have internal predecessors, (1014), 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 09:15:12,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 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 09:15:12,658 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 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 09:15:12,658 INFO L175 Difference]: Start difference. First operand has 212 places, 238 transitions, 520 flow. Second operand 5 states and 1014 transitions. [2022-11-21 09:15:12,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 526 flow [2022-11-21 09:15:12,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 214 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:15:12,662 INFO L231 Difference]: Finished difference. Result has 218 places, 210 transitions, 490 flow [2022-11-21 09:15:12,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=218, PETRI_TRANSITIONS=210} [2022-11-21 09:15:12,663 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 6 predicate places. [2022-11-21 09:15:12,663 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 210 transitions, 490 flow [2022-11-21 09:15:12,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 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 09:15:12,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:15:12,664 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] [2022-11-21 09:15:12,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 09:15:12,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 09:15:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1199123880, now seen corresponding path program 1 times [2022-11-21 09:15:12,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:12,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720792468] [2022-11-21 09:15:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:12,710 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 09:15:12,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:12,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720792468] [2022-11-21 09:15:12,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720792468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:12,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:12,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:15:12,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17550975] [2022-11-21 09:15:12,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:12,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:15:12,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:15:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:15:12,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 238 [2022-11-21 09:15:12,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 210 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 09:15:12,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:15:12,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 238 [2022-11-21 09:15:12,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand