./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/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_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/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_9dfe09d2-6e9b-431c-816b-a98a47afa675/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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- 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 16:21:06,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:21:06,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:21:06,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:21:06,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:21:06,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:21:06,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:21:06,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:21:06,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:21:06,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:21:06,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:21:06,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:21:06,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:21:06,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:21:06,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:21:06,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:21:06,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:21:06,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:21:06,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:21:06,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:21:06,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:21:06,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:21:06,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:21:06,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:21:06,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:21:06,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:21:06,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:21:06,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:21:06,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:21:06,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:21:06,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:21:06,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:21:06,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:21:06,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:21:06,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:21:06,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:21:06,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:21:06,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:21:06,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:21:06,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:21:06,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:21:06,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:21:06,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:21:06,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:21:06,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:21:06,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:21:06,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:21:06,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:21:06,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:21:06,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:21:06,857 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:21:06,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:21:06,858 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:21:06,858 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:21:06,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:21:06,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:21:06,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:21:06,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:21:06,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:21:06,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:21:06,860 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:21:06,860 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:21:06,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:21:06,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:21:06,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:21:06,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:21:06,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:21:06,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:21:06,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:21:06,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:21:06,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:21:06,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:21:06,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:21:06,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:21:06,863 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:21:06,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:21:06,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:21:06,864 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_9dfe09d2-6e9b-431c-816b-a98a47afa675/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2022-11-21 16:21:07,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:21:07,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:21:07,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:21:07,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:21:07,215 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:21:07,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2022-11-21 16:21:10,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:21:10,887 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:21:10,888 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2022-11-21 16:21:10,910 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/data/491c6dc54/04a2e9ffef924775a32e8d01ea2cdf85/FLAG1baba3f66 [2022-11-21 16:21:10,929 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/data/491c6dc54/04a2e9ffef924775a32e8d01ea2cdf85 [2022-11-21 16:21:10,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:21:10,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:21:10,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:21:10,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:21:10,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:21:10,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:21:10" (1/1) ... [2022-11-21 16:21:10,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17332c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:10, skipping insertion in model container [2022-11-21 16:21:10,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:21:10" (1/1) ... [2022-11-21 16:21:10,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:21:11,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:21:11,653 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_9dfe09d2-6e9b-431c-816b-a98a47afa675/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2022-11-21 16:21:11,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:21:11,704 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:21:11,771 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_9dfe09d2-6e9b-431c-816b-a98a47afa675/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2022-11-21 16:21:11,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:21:11,911 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:21:11,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11 WrapperNode [2022-11-21 16:21:11,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:21:11,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:21:11,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:21:11,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:21:11,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:11,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,006 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-11-21 16:21:12,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:21:12,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:21:12,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:21:12,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:21:12,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:21:12,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:21:12,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:21:12,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:21:12,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (1/1) ... [2022-11-21 16:21:12,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:21:12,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:12,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:21:12,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:21:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:21:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:21:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:21:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:21:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 16:21:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:21:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 16:21:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 16:21:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:21:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:21:12,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:21:12,217 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 16:21:12,426 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:21:12,429 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:21:12,852 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:21:12,861 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:21:12,862 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-21 16:21:12,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:21:12 BoogieIcfgContainer [2022-11-21 16:21:12,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:21:12,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:21:12,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:21:12,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:21:12,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:21:10" (1/3) ... [2022-11-21 16:21:12,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a19c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:21:12, skipping insertion in model container [2022-11-21 16:21:12,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:11" (2/3) ... [2022-11-21 16:21:12,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a19c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:21:12, skipping insertion in model container [2022-11-21 16:21:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:21:12" (3/3) ... [2022-11-21 16:21:12,882 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2022-11-21 16:21:12,897 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:21:12,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:21:12,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 16:21:12,912 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:21:13,009 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 16:21:13,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 139 transitions, 286 flow [2022-11-21 16:21:13,165 INFO L130 PetriNetUnfolder]: 23/183 cut-off events. [2022-11-21 16:21:13,166 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 16:21:13,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 183 events. 23/183 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 423 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2022-11-21 16:21:13,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 139 transitions, 286 flow [2022-11-21 16:21:13,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 136 transitions, 280 flow [2022-11-21 16:21:13,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:21:13,216 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;@10c15ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:21:13,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-21 16:21:13,251 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-21 16:21:13,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:21:13,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:13,252 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:13,253 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 16:21:13,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1682461848, now seen corresponding path program 1 times [2022-11-21 16:21:13,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:13,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547708541] [2022-11-21 16:21:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:13,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:13,938 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 16:21:13,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:13,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547708541] [2022-11-21 16:21:13,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547708541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:13,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:13,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:13,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880446461] [2022-11-21 16:21:13,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:13,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:14,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 139 [2022-11-21 16:21:14,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 136 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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 16:21:14,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:14,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 139 [2022-11-21 16:21:14,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:14,142 INFO L130 PetriNetUnfolder]: 3/126 cut-off events. [2022-11-21 16:21:14,142 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-21 16:21:14,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 126 events. 3/126 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 41/156 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2022-11-21 16:21:14,145 INFO L137 encePairwiseOnDemand]: 121/139 looper letters, 10 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-11-21 16:21:14,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 124 transitions, 284 flow [2022-11-21 16:21:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 612 transitions. [2022-11-21 16:21:14,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8805755395683453 [2022-11-21 16:21:14,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 612 transitions. [2022-11-21 16:21:14,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 612 transitions. [2022-11-21 16:21:14,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:14,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 612 transitions. [2022-11-21 16:21:14,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 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 16:21:14,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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 16:21:14,207 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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 16:21:14,210 INFO L175 Difference]: Start difference. First operand has 125 places, 136 transitions, 280 flow. Second operand 5 states and 612 transitions. [2022-11-21 16:21:14,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 124 transitions, 284 flow [2022-11-21 16:21:14,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 124 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:21:14,235 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 264 flow [2022-11-21 16:21:14,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-11-21 16:21:14,243 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 2 predicate places. [2022-11-21 16:21:14,258 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 264 flow [2022-11-21 16:21:14,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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 16:21:14,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:14,259 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 16:21:14,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:21:14,260 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 16:21:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1521366044, now seen corresponding path program 1 times [2022-11-21 16:21:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:14,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073290606] [2022-11-21 16:21:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:14,560 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 16:21:14,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:14,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073290606] [2022-11-21 16:21:14,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073290606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:14,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:14,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703697916] [2022-11-21 16:21:14,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:14,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:14,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:14,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 139 [2022-11-21 16:21:14,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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 16:21:14,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:14,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 139 [2022-11-21 16:21:14,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:14,719 INFO L130 PetriNetUnfolder]: 10/153 cut-off events. [2022-11-21 16:21:14,720 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-21 16:21:14,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 153 events. 10/153 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 129. Up to 11 conditions per place. [2022-11-21 16:21:14,725 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 10 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2022-11-21 16:21:14,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 123 transitions, 294 flow [2022-11-21 16:21:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2022-11-21 16:21:14,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8431654676258993 [2022-11-21 16:21:14,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2022-11-21 16:21:14,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2022-11-21 16:21:14,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:14,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2022-11-21 16:21:14,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 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 16:21:14,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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 16:21:14,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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 16:21:14,761 INFO L175 Difference]: Start difference. First operand has 127 places, 122 transitions, 264 flow. Second operand 5 states and 586 transitions. [2022-11-21 16:21:14,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 123 transitions, 294 flow [2022-11-21 16:21:14,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 123 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:21:14,770 INFO L231 Difference]: Finished difference. Result has 125 places, 120 transitions, 260 flow [2022-11-21 16:21:14,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2022-11-21 16:21:14,773 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 0 predicate places. [2022-11-21 16:21:14,776 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 260 flow [2022-11-21 16:21:14,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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 16:21:14,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:14,778 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:14,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:21:14,780 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 16:21:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -538052975, now seen corresponding path program 1 times [2022-11-21 16:21:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:14,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585168761] [2022-11-21 16:21:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:14,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:21:14,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:21:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:21:14,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:21:14,878 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:21:14,880 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-21 16:21:14,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-21 16:21:14,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-21 16:21:14,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-21 16:21:14,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-21 16:21:14,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-21 16:21:14,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-21 16:21:14,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-21 16:21:14,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-21 16:21:14,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-21 16:21:14,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-21 16:21:14,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-21 16:21:14,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-21 16:21:14,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:21:14,888 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 16:21:14,892 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:21:14,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 16:21:14,934 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:21:14,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 177 transitions, 372 flow [2022-11-21 16:21:15,013 INFO L130 PetriNetUnfolder]: 40/302 cut-off events. [2022-11-21 16:21:15,013 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 16:21:15,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 302 events. 40/302 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 890 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 185. Up to 9 conditions per place. [2022-11-21 16:21:15,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 177 transitions, 372 flow [2022-11-21 16:21:15,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 177 transitions, 372 flow [2022-11-21 16:21:15,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:21:15,026 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;@10c15ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:21:15,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-21 16:21:15,040 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-21 16:21:15,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:21:15,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:15,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:15,041 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 16:21:15,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:15,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1694995316, now seen corresponding path program 1 times [2022-11-21 16:21:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:15,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036837967] [2022-11-21 16:21:15,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:15,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:15,154 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 16:21:15,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:15,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036837967] [2022-11-21 16:21:15,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036837967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:15,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:15,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:15,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772501286] [2022-11-21 16:21:15,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:15,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:15,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:15,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:15,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 177 [2022-11-21 16:21:15,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 177 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 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 16:21:15,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:15,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 177 [2022-11-21 16:21:15,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:15,282 INFO L130 PetriNetUnfolder]: 8/244 cut-off events. [2022-11-21 16:21:15,283 INFO L131 PetriNetUnfolder]: For 34/104 co-relation queries the response was YES. [2022-11-21 16:21:15,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 244 events. 8/244 cut-off events. For 34/104 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 631 event pairs, 0 based on Foata normal form. 124/338 useless extension candidates. Maximal degree in co-relation 159. Up to 21 conditions per place. [2022-11-21 16:21:15,286 INFO L137 encePairwiseOnDemand]: 153/177 looper letters, 19 selfloop transitions, 4 changer transitions 0/166 dead transitions. [2022-11-21 16:21:15,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 166 transitions, 396 flow [2022-11-21 16:21:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 777 transitions. [2022-11-21 16:21:15,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8779661016949153 [2022-11-21 16:21:15,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 777 transitions. [2022-11-21 16:21:15,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 777 transitions. [2022-11-21 16:21:15,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:15,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 777 transitions. [2022-11-21 16:21:15,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 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 16:21:15,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 16:21:15,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 16:21:15,302 INFO L175 Difference]: Start difference. First operand has 160 places, 177 transitions, 372 flow. Second operand 5 states and 777 transitions. [2022-11-21 16:21:15,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 166 transitions, 396 flow [2022-11-21 16:21:15,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 166 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:21:15,309 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 368 flow [2022-11-21 16:21:15,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2022-11-21 16:21:15,311 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 6 predicate places. [2022-11-21 16:21:15,311 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 368 flow [2022-11-21 16:21:15,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 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 16:21:15,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:15,313 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 16:21:15,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:21:15,325 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 16:21:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1542776704, now seen corresponding path program 1 times [2022-11-21 16:21:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:15,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626906047] [2022-11-21 16:21:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:15,593 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 16:21:15,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:15,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626906047] [2022-11-21 16:21:15,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626906047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:15,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:15,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298149206] [2022-11-21 16:21:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:15,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:15,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 177 [2022-11-21 16:21:15,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 16:21:15,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:15,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 177 [2022-11-21 16:21:15,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:16,091 INFO L130 PetriNetUnfolder]: 176/1037 cut-off events. [2022-11-21 16:21:16,091 INFO L131 PetriNetUnfolder]: For 118/137 co-relation queries the response was YES. [2022-11-21 16:21:16,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 1037 events. 176/1037 cut-off events. For 118/137 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7486 event pairs, 43 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 1362. Up to 207 conditions per place. [2022-11-21 16:21:16,108 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 36 selfloop transitions, 6 changer transitions 0/185 dead transitions. [2022-11-21 16:21:16,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 185 transitions, 516 flow [2022-11-21 16:21:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2022-11-21 16:21:16,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8429378531073446 [2022-11-21 16:21:16,113 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2022-11-21 16:21:16,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2022-11-21 16:21:16,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:16,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2022-11-21 16:21:16,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 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 16:21:16,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 16:21:16,122 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 16:21:16,123 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 368 flow. Second operand 5 states and 746 transitions. [2022-11-21 16:21:16,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 185 transitions, 516 flow [2022-11-21 16:21:16,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 185 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:21:16,133 INFO L231 Difference]: Finished difference. Result has 172 places, 167 transitions, 415 flow [2022-11-21 16:21:16,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=172, PETRI_TRANSITIONS=167} [2022-11-21 16:21:16,136 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 12 predicate places. [2022-11-21 16:21:16,137 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 167 transitions, 415 flow [2022-11-21 16:21:16,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 16:21:16,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:16,139 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:16,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:21:16,140 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 16:21:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:16,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1949265105, now seen corresponding path program 1 times [2022-11-21 16:21:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:16,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820455774] [2022-11-21 16:21:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:16,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,288 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 16:21:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:16,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820455774] [2022-11-21 16:21:16,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820455774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:16,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:16,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275674617] [2022-11-21 16:21:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:16,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 177 [2022-11-21 16:21:16,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 167 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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 16:21:16,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:16,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 177 [2022-11-21 16:21:16,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:16,419 INFO L130 PetriNetUnfolder]: 11/370 cut-off events. [2022-11-21 16:21:16,420 INFO L131 PetriNetUnfolder]: For 74/181 co-relation queries the response was YES. [2022-11-21 16:21:16,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 370 events. 11/370 cut-off events. For 74/181 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1286 event pairs, 0 based on Foata normal form. 16/346 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2022-11-21 16:21:16,425 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 11 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2022-11-21 16:21:16,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 167 transitions, 451 flow [2022-11-21 16:21:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2022-11-21 16:21:16,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8271186440677966 [2022-11-21 16:21:16,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2022-11-21 16:21:16,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2022-11-21 16:21:16,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:16,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2022-11-21 16:21:16,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 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 16:21:16,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 16:21:16,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 16:21:16,436 INFO L175 Difference]: Start difference. First operand has 172 places, 167 transitions, 415 flow. Second operand 5 states and 732 transitions. [2022-11-21 16:21:16,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 167 transitions, 451 flow [2022-11-21 16:21:16,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 167 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:21:16,443 INFO L231 Difference]: Finished difference. Result has 175 places, 167 transitions, 432 flow [2022-11-21 16:21:16,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=175, PETRI_TRANSITIONS=167} [2022-11-21 16:21:16,445 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 15 predicate places. [2022-11-21 16:21:16,445 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 167 transitions, 432 flow [2022-11-21 16:21:16,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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 16:21:16,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:16,446 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:16,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:21:16,447 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 16:21:16,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash 297676569, now seen corresponding path program 1 times [2022-11-21 16:21:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:16,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791272481] [2022-11-21 16:21:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,601 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 16:21:16,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:16,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791272481] [2022-11-21 16:21:16,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791272481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:21:16,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185012871] [2022-11-21 16:21:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:16,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:16,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:21:16,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:21:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:21:16,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:21:16,935 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 16:21:16,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:21:16,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185012871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:16,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:21:16,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:21:16,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777429479] [2022-11-21 16:21:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:16,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:16,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:16,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:21:16,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 177 [2022-11-21 16:21:16,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 167 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 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 16:21:16,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:16,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 177 [2022-11-21 16:21:16,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:17,139 INFO L130 PetriNetUnfolder]: 11/369 cut-off events. [2022-11-21 16:21:17,140 INFO L131 PetriNetUnfolder]: For 82/181 co-relation queries the response was YES. [2022-11-21 16:21:17,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 369 events. 11/369 cut-off events. For 82/181 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1278 event pairs, 0 based on Foata normal form. 9/338 useless extension candidates. Maximal degree in co-relation 302. Up to 19 conditions per place. [2022-11-21 16:21:17,146 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 15 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-21 16:21:17,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 169 transitions, 476 flow [2022-11-21 16:21:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:21:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:21:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1023 transitions. [2022-11-21 16:21:17,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256658595641646 [2022-11-21 16:21:17,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1023 transitions. [2022-11-21 16:21:17,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1023 transitions. [2022-11-21 16:21:17,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:17,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1023 transitions. [2022-11-21 16:21:17,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 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 16:21:17,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 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 16:21:17,160 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 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 16:21:17,160 INFO L175 Difference]: Start difference. First operand has 175 places, 167 transitions, 432 flow. Second operand 7 states and 1023 transitions. [2022-11-21 16:21:17,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 169 transitions, 476 flow [2022-11-21 16:21:17,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 169 transitions, 464 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:21:17,167 INFO L231 Difference]: Finished difference. Result has 177 places, 166 transitions, 428 flow [2022-11-21 16:21:17,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=177, PETRI_TRANSITIONS=166} [2022-11-21 16:21:17,169 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 17 predicate places. [2022-11-21 16:21:17,169 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 428 flow [2022-11-21 16:21:17,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 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 16:21:17,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:17,171 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:17,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:21:17,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:17,379 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 16:21:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:17,379 INFO L85 PathProgramCache]: Analyzing trace with hash -452856537, now seen corresponding path program 1 times [2022-11-21 16:21:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:17,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206045734] [2022-11-21 16:21:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:17,590 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 16:21:17,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:17,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206045734] [2022-11-21 16:21:17,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206045734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:17,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:17,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:21:17,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827664952] [2022-11-21 16:21:17,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:17,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:17,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:17,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:21:17,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 177 [2022-11-21 16:21:17,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 166 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 16:21:17,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:17,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 177 [2022-11-21 16:21:17,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:18,226 INFO L130 PetriNetUnfolder]: 361/1814 cut-off events. [2022-11-21 16:21:18,226 INFO L131 PetriNetUnfolder]: For 401/458 co-relation queries the response was YES. [2022-11-21 16:21:18,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 1814 events. 361/1814 cut-off events. For 401/458 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15166 event pairs, 58 based on Foata normal form. 5/1603 useless extension candidates. Maximal degree in co-relation 1367. Up to 237 conditions per place. [2022-11-21 16:21:18,248 INFO L137 encePairwiseOnDemand]: 166/177 looper letters, 60 selfloop transitions, 19 changer transitions 0/216 dead transitions. [2022-11-21 16:21:18,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 216 transitions, 736 flow [2022-11-21 16:21:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:21:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1296 transitions. [2022-11-21 16:21:18,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8135593220338984 [2022-11-21 16:21:18,259 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1296 transitions. [2022-11-21 16:21:18,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1296 transitions. [2022-11-21 16:21:18,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:18,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1296 transitions. [2022-11-21 16:21:18,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.0) internal successors, (1296), 9 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 16:21:18,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 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 16:21:18,269 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 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 16:21:18,269 INFO L175 Difference]: Start difference. First operand has 177 places, 166 transitions, 428 flow. Second operand 9 states and 1296 transitions. [2022-11-21 16:21:18,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 216 transitions, 736 flow [2022-11-21 16:21:18,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 216 transitions, 725 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 16:21:18,280 INFO L231 Difference]: Finished difference. Result has 186 places, 178 transitions, 543 flow [2022-11-21 16:21:18,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=543, PETRI_PLACES=186, PETRI_TRANSITIONS=178} [2022-11-21 16:21:18,283 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 26 predicate places. [2022-11-21 16:21:18,286 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 178 transitions, 543 flow [2022-11-21 16:21:18,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 16:21:18,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:18,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:18,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:21:18,287 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 16:21:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1153650184, now seen corresponding path program 1 times [2022-11-21 16:21:18,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:18,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541506032] [2022-11-21 16:21:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:18,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:18,455 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 16:21:18,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:18,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541506032] [2022-11-21 16:21:18,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541506032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:18,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:18,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:21:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913176732] [2022-11-21 16:21:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:18,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:18,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:18,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:18,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:21:18,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 177 [2022-11-21 16:21:18,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 178 transitions, 543 flow. Second operand has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 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 16:21:18,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:18,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 177 [2022-11-21 16:21:18,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:19,038 INFO L130 PetriNetUnfolder]: 324/1554 cut-off events. [2022-11-21 16:21:19,039 INFO L131 PetriNetUnfolder]: For 961/1023 co-relation queries the response was YES. [2022-11-21 16:21:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 1554 events. 324/1554 cut-off events. For 961/1023 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12718 event pairs, 64 based on Foata normal form. 36/1451 useless extension candidates. Maximal degree in co-relation 2528. Up to 272 conditions per place. [2022-11-21 16:21:19,060 INFO L137 encePairwiseOnDemand]: 166/177 looper letters, 65 selfloop transitions, 19 changer transitions 0/221 dead transitions. [2022-11-21 16:21:19,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 221 transitions, 878 flow [2022-11-21 16:21:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:21:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1298 transitions. [2022-11-21 16:21:19,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-11-21 16:21:19,066 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1298 transitions. [2022-11-21 16:21:19,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1298 transitions. [2022-11-21 16:21:19,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:19,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1298 transitions. [2022-11-21 16:21:19,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.22222222222223) internal successors, (1298), 9 states have internal predecessors, (1298), 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 16:21:19,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 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 16:21:19,077 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 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 16:21:19,077 INFO L175 Difference]: Start difference. First operand has 186 places, 178 transitions, 543 flow. Second operand 9 states and 1298 transitions. [2022-11-21 16:21:19,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 221 transitions, 878 flow [2022-11-21 16:21:19,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 221 transitions, 837 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-21 16:21:19,089 INFO L231 Difference]: Finished difference. Result has 192 places, 182 transitions, 590 flow [2022-11-21 16:21:19,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=590, PETRI_PLACES=192, PETRI_TRANSITIONS=182} [2022-11-21 16:21:19,090 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 32 predicate places. [2022-11-21 16:21:19,091 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 182 transitions, 590 flow [2022-11-21 16:21:19,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 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 16:21:19,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:19,092 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 16:21:19,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:21:19,093 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 16:21:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:19,093 INFO L85 PathProgramCache]: Analyzing trace with hash 285052741, now seen corresponding path program 1 times [2022-11-21 16:21:19,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:19,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851562539] [2022-11-21 16:21:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:19,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:19,203 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 16:21:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:19,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851562539] [2022-11-21 16:21:19,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851562539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:19,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:19,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634307089] [2022-11-21 16:21:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:19,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 177 [2022-11-21 16:21:19,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 182 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 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 16:21:19,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:19,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 177 [2022-11-21 16:21:19,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:19,763 INFO L130 PetriNetUnfolder]: 299/1948 cut-off events. [2022-11-21 16:21:19,763 INFO L131 PetriNetUnfolder]: For 1228/1302 co-relation queries the response was YES. [2022-11-21 16:21:19,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3341 conditions, 1948 events. 299/1948 cut-off events. For 1228/1302 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 16860 event pairs, 127 based on Foata normal form. 24/1750 useless extension candidates. Maximal degree in co-relation 2569. Up to 369 conditions per place. [2022-11-21 16:21:19,789 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 55 selfloop transitions, 7 changer transitions 0/208 dead transitions. [2022-11-21 16:21:19,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 208 transitions, 852 flow [2022-11-21 16:21:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 744 transitions. [2022-11-21 16:21:19,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8406779661016949 [2022-11-21 16:21:19,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 744 transitions. [2022-11-21 16:21:19,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 744 transitions. [2022-11-21 16:21:19,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:19,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 744 transitions. [2022-11-21 16:21:19,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.8) internal successors, (744), 5 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 16:21:19,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 16:21:19,799 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 16:21:19,799 INFO L175 Difference]: Start difference. First operand has 192 places, 182 transitions, 590 flow. Second operand 5 states and 744 transitions. [2022-11-21 16:21:19,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 208 transitions, 852 flow [2022-11-21 16:21:19,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 208 transitions, 824 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 16:21:19,812 INFO L231 Difference]: Finished difference. Result has 195 places, 185 transitions, 620 flow [2022-11-21 16:21:19,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=620, PETRI_PLACES=195, PETRI_TRANSITIONS=185} [2022-11-21 16:21:19,814 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 35 predicate places. [2022-11-21 16:21:19,814 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 185 transitions, 620 flow [2022-11-21 16:21:19,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 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 16:21:19,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:19,815 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, 1, 1] [2022-11-21 16:21:19,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:21:19,816 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 16:21:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:19,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1461741470, now seen corresponding path program 1 times [2022-11-21 16:21:19,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:19,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285169848] [2022-11-21 16:21:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:19,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:21:19,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:21:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:21:19,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:21:19,863 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:21:19,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-21 16:21:19,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-21 16:21:19,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-21 16:21:19,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-21 16:21:19,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-21 16:21:19,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-21 16:21:19,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-21 16:21:19,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-21 16:21:19,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-21 16:21:19,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-21 16:21:19,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-21 16:21:19,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-21 16:21:19,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-21 16:21:19,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-21 16:21:19,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-21 16:21:19,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-21 16:21:19,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-21 16:21:19,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:21:19,869 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:19,870 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:21:19,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 16:21:19,902 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:21:19,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 215 transitions, 460 flow [2022-11-21 16:21:19,994 INFO L130 PetriNetUnfolder]: 62/462 cut-off events. [2022-11-21 16:21:19,994 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 16:21:19,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 462 events. 62/462 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1559 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 310. Up to 16 conditions per place. [2022-11-21 16:21:19,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 215 transitions, 460 flow [2022-11-21 16:21:20,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 215 transitions, 460 flow [2022-11-21 16:21:20,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:21:20,010 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;@10c15ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:21:20,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-21 16:21:20,019 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-21 16:21:20,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:21:20,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:20,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:20,020 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 16:21:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1145954224, now seen corresponding path program 1 times [2022-11-21 16:21:20,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:20,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133745263] [2022-11-21 16:21:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:20,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:20,102 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 16:21:20,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:20,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133745263] [2022-11-21 16:21:20,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133745263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:20,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:20,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:20,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146020619] [2022-11-21 16:21:20,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:20,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:20,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:20,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 215 [2022-11-21 16:21:20,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 215 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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 16:21:20,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:20,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 215 [2022-11-21 16:21:20,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:20,257 INFO L130 PetriNetUnfolder]: 16/389 cut-off events. [2022-11-21 16:21:20,257 INFO L131 PetriNetUnfolder]: For 63/159 co-relation queries the response was YES. [2022-11-21 16:21:20,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 389 events. 16/389 cut-off events. For 63/159 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1298 event pairs, 1 based on Foata normal form. 305/641 useless extension candidates. Maximal degree in co-relation 287. Up to 40 conditions per place. [2022-11-21 16:21:20,263 INFO L137 encePairwiseOnDemand]: 185/215 looper letters, 21 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2022-11-21 16:21:20,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 198 transitions, 476 flow [2022-11-21 16:21:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 935 transitions. [2022-11-21 16:21:20,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8697674418604651 [2022-11-21 16:21:20,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 935 transitions. [2022-11-21 16:21:20,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 935 transitions. [2022-11-21 16:21:20,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:20,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 935 transitions. [2022-11-21 16:21:20,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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 16:21:20,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:20,274 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:20,274 INFO L175 Difference]: Start difference. First operand has 193 places, 215 transitions, 460 flow. Second operand 5 states and 935 transitions. [2022-11-21 16:21:20,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 198 transitions, 476 flow [2022-11-21 16:21:20,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 198 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:21:20,280 INFO L231 Difference]: Finished difference. Result has 199 places, 194 transitions, 444 flow [2022-11-21 16:21:20,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=444, PETRI_PLACES=199, PETRI_TRANSITIONS=194} [2022-11-21 16:21:20,284 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 6 predicate places. [2022-11-21 16:21:20,284 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 194 transitions, 444 flow [2022-11-21 16:21:20,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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 16:21:20,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:20,285 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 16:21:20,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:21:20,285 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 16:21:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1086573156, now seen corresponding path program 1 times [2022-11-21 16:21:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:20,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735433691] [2022-11-21 16:21:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:20,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:20,406 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 16:21:20,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:20,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735433691] [2022-11-21 16:21:20,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735433691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:20,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:20,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:20,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234917155] [2022-11-21 16:21:20,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:20,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:20,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:20,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:20,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 215 [2022-11-21 16:21:20,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 194 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 16:21:20,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:20,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 215 [2022-11-21 16:21:20,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:22,217 INFO L130 PetriNetUnfolder]: 1893/8380 cut-off events. [2022-11-21 16:21:22,217 INFO L131 PetriNetUnfolder]: For 1264/1433 co-relation queries the response was YES. [2022-11-21 16:21:22,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11837 conditions, 8380 events. 1893/8380 cut-off events. For 1264/1433 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 96057 event pairs, 779 based on Foata normal form. 0/7279 useless extension candidates. Maximal degree in co-relation 11766. Up to 1996 conditions per place. [2022-11-21 16:21:22,410 INFO L137 encePairwiseOnDemand]: 207/215 looper letters, 52 selfloop transitions, 8 changer transitions 0/229 dead transitions. [2022-11-21 16:21:22,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 229 transitions, 676 flow [2022-11-21 16:21:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 894 transitions. [2022-11-21 16:21:22,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8316279069767442 [2022-11-21 16:21:22,413 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 894 transitions. [2022-11-21 16:21:22,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 894 transitions. [2022-11-21 16:21:22,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:22,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 894 transitions. [2022-11-21 16:21:22,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.8) internal successors, (894), 5 states have internal predecessors, (894), 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 16:21:22,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:22,418 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:22,419 INFO L175 Difference]: Start difference. First operand has 199 places, 194 transitions, 444 flow. Second operand 5 states and 894 transitions. [2022-11-21 16:21:22,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 229 transitions, 676 flow [2022-11-21 16:21:22,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 229 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:21:22,424 INFO L231 Difference]: Finished difference. Result has 205 places, 201 transitions, 506 flow [2022-11-21 16:21:22,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=506, PETRI_PLACES=205, PETRI_TRANSITIONS=201} [2022-11-21 16:21:22,426 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 12 predicate places. [2022-11-21 16:21:22,426 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 201 transitions, 506 flow [2022-11-21 16:21:22,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 16:21:22,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:22,427 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:22,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:21:22,427 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 16:21:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2040991399, now seen corresponding path program 1 times [2022-11-21 16:21:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:22,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12151400] [2022-11-21 16:21:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:22,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:22,481 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 16:21:22,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:22,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12151400] [2022-11-21 16:21:22,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12151400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:22,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:22,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:22,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350596022] [2022-11-21 16:21:22,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:22,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:22,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:22,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 215 [2022-11-21 16:21:22,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 201 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 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 16:21:22,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:22,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 215 [2022-11-21 16:21:22,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:22,698 INFO L130 PetriNetUnfolder]: 46/892 cut-off events. [2022-11-21 16:21:22,698 INFO L131 PetriNetUnfolder]: For 230/599 co-relation queries the response was YES. [2022-11-21 16:21:22,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 892 events. 46/892 cut-off events. For 230/599 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5301 event pairs, 7 based on Foata normal form. 41/813 useless extension candidates. Maximal degree in co-relation 783. Up to 52 conditions per place. [2022-11-21 16:21:22,710 INFO L137 encePairwiseOnDemand]: 209/215 looper letters, 13 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2022-11-21 16:21:22,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 201 transitions, 546 flow [2022-11-21 16:21:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 884 transitions. [2022-11-21 16:21:22,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8223255813953488 [2022-11-21 16:21:22,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 884 transitions. [2022-11-21 16:21:22,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 884 transitions. [2022-11-21 16:21:22,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:22,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 884 transitions. [2022-11-21 16:21:22,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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 16:21:22,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:22,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:22,720 INFO L175 Difference]: Start difference. First operand has 205 places, 201 transitions, 506 flow. Second operand 5 states and 884 transitions. [2022-11-21 16:21:22,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 201 transitions, 546 flow [2022-11-21 16:21:22,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 201 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:21:22,725 INFO L231 Difference]: Finished difference. Result has 208 places, 201 transitions, 522 flow [2022-11-21 16:21:22,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=208, PETRI_TRANSITIONS=201} [2022-11-21 16:21:22,726 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 15 predicate places. [2022-11-21 16:21:22,727 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 201 transitions, 522 flow [2022-11-21 16:21:22,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 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 16:21:22,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:22,728 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:22,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:21:22,728 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 16:21:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:22,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1153776744, now seen corresponding path program 1 times [2022-11-21 16:21:22,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:22,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643281782] [2022-11-21 16:21:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:22,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:22,854 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 16:21:22,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:22,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643281782] [2022-11-21 16:21:22,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643281782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:21:22,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147158076] [2022-11-21 16:21:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:22,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:22,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:22,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:21:22,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:21:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:23,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:21:23,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:21:23,088 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 16:21:23,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:21:23,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147158076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:23,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:21:23,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:21:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003331735] [2022-11-21 16:21:23,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:23,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:23,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:21:23,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 215 [2022-11-21 16:21:23,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 201 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 175.66666666666666) internal successors, (1054), 6 states have internal predecessors, (1054), 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 16:21:23,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:23,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 215 [2022-11-21 16:21:23,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:23,337 INFO L130 PetriNetUnfolder]: 46/890 cut-off events. [2022-11-21 16:21:23,338 INFO L131 PetriNetUnfolder]: For 239/577 co-relation queries the response was YES. [2022-11-21 16:21:23,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 890 events. 46/890 cut-off events. For 239/577 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5347 event pairs, 7 based on Foata normal form. 18/788 useless extension candidates. Maximal degree in co-relation 783. Up to 58 conditions per place. [2022-11-21 16:21:23,351 INFO L137 encePairwiseOnDemand]: 210/215 looper letters, 17 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2022-11-21 16:21:23,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 203 transitions, 570 flow [2022-11-21 16:21:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:21:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:21:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1235 transitions. [2022-11-21 16:21:23,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8205980066445183 [2022-11-21 16:21:23,355 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1235 transitions. [2022-11-21 16:21:23,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1235 transitions. [2022-11-21 16:21:23,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:23,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1235 transitions. [2022-11-21 16:21:23,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.42857142857142) internal successors, (1235), 7 states have internal predecessors, (1235), 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 16:21:23,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 215.0) internal successors, (1720), 8 states have internal predecessors, (1720), 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 16:21:23,363 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 215.0) internal successors, (1720), 8 states have internal predecessors, (1720), 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 16:21:23,363 INFO L175 Difference]: Start difference. First operand has 208 places, 201 transitions, 522 flow. Second operand 7 states and 1235 transitions. [2022-11-21 16:21:23,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 203 transitions, 570 flow [2022-11-21 16:21:23,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 203 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:21:23,369 INFO L231 Difference]: Finished difference. Result has 210 places, 200 transitions, 518 flow [2022-11-21 16:21:23,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=210, PETRI_TRANSITIONS=200} [2022-11-21 16:21:23,371 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 17 predicate places. [2022-11-21 16:21:23,371 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 200 transitions, 518 flow [2022-11-21 16:21:23,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.66666666666666) internal successors, (1054), 6 states have internal predecessors, (1054), 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 16:21:23,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:23,372 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:23,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:21:23,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:23,578 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 16:21:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash -443399070, now seen corresponding path program 1 times [2022-11-21 16:21:23,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:23,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386128769] [2022-11-21 16:21:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:23,693 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 16:21:23,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:23,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386128769] [2022-11-21 16:21:23,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386128769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:23,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:23,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:21:23,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320621230] [2022-11-21 16:21:23,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:23,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:23,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:23,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:23,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:21:23,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 215 [2022-11-21 16:21:23,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 200 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 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 16:21:23,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:23,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 215 [2022-11-21 16:21:23,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:26,981 INFO L130 PetriNetUnfolder]: 4140/14774 cut-off events. [2022-11-21 16:21:26,981 INFO L131 PetriNetUnfolder]: For 4756/5105 co-relation queries the response was YES. [2022-11-21 16:21:27,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24021 conditions, 14774 events. 4140/14774 cut-off events. For 4756/5105 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 179821 event pairs, 1237 based on Foata normal form. 15/12707 useless extension candidates. Maximal degree in co-relation 11761. Up to 2737 conditions per place. [2022-11-21 16:21:27,199 INFO L137 encePairwiseOnDemand]: 202/215 looper letters, 100 selfloop transitions, 27 changer transitions 0/290 dead transitions. [2022-11-21 16:21:27,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 290 transitions, 1098 flow [2022-11-21 16:21:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:21:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1578 transitions. [2022-11-21 16:21:27,204 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8155038759689922 [2022-11-21 16:21:27,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1578 transitions. [2022-11-21 16:21:27,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1578 transitions. [2022-11-21 16:21:27,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:27,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1578 transitions. [2022-11-21 16:21:27,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.33333333333334) internal successors, (1578), 9 states have internal predecessors, (1578), 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 16:21:27,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 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 16:21:27,232 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 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 16:21:27,233 INFO L175 Difference]: Start difference. First operand has 210 places, 200 transitions, 518 flow. Second operand 9 states and 1578 transitions. [2022-11-21 16:21:27,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 290 transitions, 1098 flow [2022-11-21 16:21:27,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 290 transitions, 1087 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 16:21:27,247 INFO L231 Difference]: Finished difference. Result has 219 places, 219 transitions, 711 flow [2022-11-21 16:21:27,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=711, PETRI_PLACES=219, PETRI_TRANSITIONS=219} [2022-11-21 16:21:27,249 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 26 predicate places. [2022-11-21 16:21:27,249 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 219 transitions, 711 flow [2022-11-21 16:21:27,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 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 16:21:27,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:27,250 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:27,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:21:27,250 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 16:21:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash -860468420, now seen corresponding path program 1 times [2022-11-21 16:21:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:27,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074357318] [2022-11-21 16:21:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:27,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:27,374 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 16:21:27,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:27,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074357318] [2022-11-21 16:21:27,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074357318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:27,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:27,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:21:27,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626949023] [2022-11-21 16:21:27,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:27,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:27,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:27,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:21:27,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 215 [2022-11-21 16:21:27,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 219 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 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 16:21:27,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:27,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 215 [2022-11-21 16:21:27,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:30,811 INFO L130 PetriNetUnfolder]: 3952/14734 cut-off events. [2022-11-21 16:21:30,812 INFO L131 PetriNetUnfolder]: For 14323/14853 co-relation queries the response was YES. [2022-11-21 16:21:30,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28630 conditions, 14734 events. 3952/14734 cut-off events. For 14323/14853 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 181377 event pairs, 1237 based on Foata normal form. 283/13171 useless extension candidates. Maximal degree in co-relation 19250. Up to 2977 conditions per place. [2022-11-21 16:21:31,212 INFO L137 encePairwiseOnDemand]: 202/215 looper letters, 107 selfloop transitions, 27 changer transitions 0/297 dead transitions. [2022-11-21 16:21:31,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 297 transitions, 1356 flow [2022-11-21 16:21:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:21:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1576 transitions. [2022-11-21 16:21:31,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.814470284237726 [2022-11-21 16:21:31,219 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1576 transitions. [2022-11-21 16:21:31,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1576 transitions. [2022-11-21 16:21:31,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:31,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1576 transitions. [2022-11-21 16:21:31,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.11111111111111) internal successors, (1576), 9 states have internal predecessors, (1576), 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 16:21:31,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 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 16:21:31,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 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 16:21:31,229 INFO L175 Difference]: Start difference. First operand has 219 places, 219 transitions, 711 flow. Second operand 9 states and 1576 transitions. [2022-11-21 16:21:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 297 transitions, 1356 flow [2022-11-21 16:21:31,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 297 transitions, 1289 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-21 16:21:31,280 INFO L231 Difference]: Finished difference. Result has 225 places, 227 transitions, 792 flow [2022-11-21 16:21:31,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=792, PETRI_PLACES=225, PETRI_TRANSITIONS=227} [2022-11-21 16:21:31,282 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 32 predicate places. [2022-11-21 16:21:31,282 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 227 transitions, 792 flow [2022-11-21 16:21:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 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 16:21:31,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:31,283 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 16:21:31,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:21:31,283 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 16:21:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:31,284 INFO L85 PathProgramCache]: Analyzing trace with hash -417252467, now seen corresponding path program 1 times [2022-11-21 16:21:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:31,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715102034] [2022-11-21 16:21:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:31,364 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 16:21:31,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:31,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715102034] [2022-11-21 16:21:31,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715102034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:31,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:31,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:31,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705884218] [2022-11-21 16:21:31,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:31,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:31,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:31,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:31,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 215 [2022-11-21 16:21:31,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 227 transitions, 792 flow. Second operand has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 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 16:21:31,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:31,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 215 [2022-11-21 16:21:31,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:34,997 INFO L130 PetriNetUnfolder]: 4348/18311 cut-off events. [2022-11-21 16:21:34,997 INFO L131 PetriNetUnfolder]: For 17524/18299 co-relation queries the response was YES. [2022-11-21 16:21:35,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35976 conditions, 18311 events. 4348/18311 cut-off events. For 17524/18299 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 242056 event pairs, 1561 based on Foata normal form. 211/16607 useless extension candidates. Maximal degree in co-relation 32387. Up to 4797 conditions per place. [2022-11-21 16:21:35,188 INFO L137 encePairwiseOnDemand]: 207/215 looper letters, 93 selfloop transitions, 11 changer transitions 0/276 dead transitions. [2022-11-21 16:21:35,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 276 transitions, 1308 flow [2022-11-21 16:21:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 892 transitions. [2022-11-21 16:21:35,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8297674418604651 [2022-11-21 16:21:35,191 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 892 transitions. [2022-11-21 16:21:35,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 892 transitions. [2022-11-21 16:21:35,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:35,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 892 transitions. [2022-11-21 16:21:35,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.4) internal successors, (892), 5 states have internal predecessors, (892), 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 16:21:35,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:35,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:35,197 INFO L175 Difference]: Start difference. First operand has 225 places, 227 transitions, 792 flow. Second operand 5 states and 892 transitions. [2022-11-21 16:21:35,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 276 transitions, 1308 flow [2022-11-21 16:21:35,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 276 transitions, 1266 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 16:21:35,286 INFO L231 Difference]: Finished difference. Result has 228 places, 232 transitions, 842 flow [2022-11-21 16:21:35,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=842, PETRI_PLACES=228, PETRI_TRANSITIONS=232} [2022-11-21 16:21:35,287 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 35 predicate places. [2022-11-21 16:21:35,288 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 232 transitions, 842 flow [2022-11-21 16:21:35,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 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 16:21:35,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:35,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:35,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:21:35,289 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 16:21:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1480406289, now seen corresponding path program 1 times [2022-11-21 16:21:35,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:35,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238069766] [2022-11-21 16:21:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:35,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:35,401 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 16:21:35,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:35,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238069766] [2022-11-21 16:21:35,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238069766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:35,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:35,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:21:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190455592] [2022-11-21 16:21:35,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:35,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:35,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:35,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:35,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:21:35,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 215 [2022-11-21 16:21:35,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 232 transitions, 842 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 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 16:21:35,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:35,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 215 [2022-11-21 16:21:35,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:41,520 INFO L130 PetriNetUnfolder]: 9315/34646 cut-off events. [2022-11-21 16:21:41,520 INFO L131 PetriNetUnfolder]: For 33547/35566 co-relation queries the response was YES. [2022-11-21 16:21:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70569 conditions, 34646 events. 9315/34646 cut-off events. For 33547/35566 co-relation queries the response was YES. Maximal size of possible extension queue 2050. Compared 494877 event pairs, 2289 based on Foata normal form. 421/31886 useless extension candidates. Maximal degree in co-relation 63563. Up to 7057 conditions per place. [2022-11-21 16:21:41,939 INFO L137 encePairwiseOnDemand]: 202/215 looper letters, 149 selfloop transitions, 46 changer transitions 0/362 dead transitions. [2022-11-21 16:21:41,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 362 transitions, 1988 flow [2022-11-21 16:21:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:21:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1575 transitions. [2022-11-21 16:21:41,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.813953488372093 [2022-11-21 16:21:41,946 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1575 transitions. [2022-11-21 16:21:41,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1575 transitions. [2022-11-21 16:21:41,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:41,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1575 transitions. [2022-11-21 16:21:41,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 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 16:21:41,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 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 16:21:41,956 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 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 16:21:41,956 INFO L175 Difference]: Start difference. First operand has 228 places, 232 transitions, 842 flow. Second operand 9 states and 1575 transitions. [2022-11-21 16:21:41,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 362 transitions, 1988 flow [2022-11-21 16:21:42,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 362 transitions, 1982 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:21:42,268 INFO L231 Difference]: Finished difference. Result has 241 places, 267 transitions, 1326 flow [2022-11-21 16:21:42,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1326, PETRI_PLACES=241, PETRI_TRANSITIONS=267} [2022-11-21 16:21:42,269 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 48 predicate places. [2022-11-21 16:21:42,270 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 267 transitions, 1326 flow [2022-11-21 16:21:42,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 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 16:21:42,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:42,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:42,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:21:42,271 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 16:21:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash -907445733, now seen corresponding path program 1 times [2022-11-21 16:21:42,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:42,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777661294] [2022-11-21 16:21:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:42,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:42,694 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 16:21:42,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:42,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777661294] [2022-11-21 16:21:42,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777661294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:42,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:42,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:21:42,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173361957] [2022-11-21 16:21:42,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:42,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:42,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:21:42,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 215 [2022-11-21 16:21:42,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 267 transitions, 1326 flow. Second operand has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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 16:21:42,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:42,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 215 [2022-11-21 16:21:42,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:44,384 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([846] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][143], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 468#(<= ~global~0 1), Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), 424#(<= ~global~0 1), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, t_funThread1of3ForFork0NotInUse, 216#true, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:44,384 INFO L383 tUnfolder$Statistics]: this new event has 136 ancestors and is cut-off event [2022-11-21 16:21:44,384 INFO L386 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-11-21 16:21:44,384 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-11-21 16:21:44,384 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-21 16:21:45,278 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][178], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, 66#t_funENTRYtrue, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 420#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), 468#(<= ~global~0 1), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 464#true, 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:45,279 INFO L383 tUnfolder$Statistics]: this new event has 148 ancestors and is cut-off event [2022-11-21 16:21:45,279 INFO L386 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-11-21 16:21:45,279 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-11-21 16:21:45,279 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-11-21 16:21:45,405 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][177], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 420#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), 468#(<= ~global~0 1), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 464#true, 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 175#L938-1true, 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:45,405 INFO L383 tUnfolder$Statistics]: this new event has 150 ancestors and is cut-off event [2022-11-21 16:21:45,405 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-11-21 16:21:45,406 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-11-21 16:21:45,406 INFO L386 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-11-21 16:21:45,449 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([763] L939-7-->L939-8: Formula: (= |v_#pthreadsMutex_15| (store |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10| (store (select |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10|) |v_~#__global_lock~0.offset_10| 0))) InVars {#pthreadsMutex=|v_#pthreadsMutex_16|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_15|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} AuxVars[] AssignedVars[#pthreadsMutex][161], [t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), 161#L939-8true, Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 420#true, Black: 208#(= ~global~0 0), Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 468#(<= ~global~0 1), 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), 8#L941true, Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, 216#true, t_funThread1of3ForFork0InUse]) [2022-11-21 16:21:45,449 INFO L383 tUnfolder$Statistics]: this new event has 149 ancestors and is cut-off event [2022-11-21 16:21:45,450 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-21 16:21:45,450 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-21 16:21:45,450 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-21 16:21:45,600 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][177], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 420#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), 138#L939-1true, 468#(<= ~global~0 1), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 464#true, 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:45,600 INFO L383 tUnfolder$Statistics]: this new event has 153 ancestors and is cut-off event [2022-11-21 16:21:45,600 INFO L386 tUnfolder$Statistics]: existing Event has 106 ancestors and is cut-off event [2022-11-21 16:21:45,600 INFO L386 tUnfolder$Statistics]: existing Event has 105 ancestors and is cut-off event [2022-11-21 16:21:45,600 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-11-21 16:21:45,907 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][177], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 420#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 468#(<= ~global~0 1), 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 117#L939-8true, Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:45,907 INFO L383 tUnfolder$Statistics]: this new event has 159 ancestors and is cut-off event [2022-11-21 16:21:45,908 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-21 16:21:45,908 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:21:45,908 INFO L386 tUnfolder$Statistics]: existing Event has 114 ancestors and is cut-off event [2022-11-21 16:21:46,002 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][177], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 420#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 468#(<= ~global~0 1), 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), 85#L939-11true, Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:46,002 INFO L383 tUnfolder$Statistics]: this new event has 161 ancestors and is cut-off event [2022-11-21 16:21:46,002 INFO L386 tUnfolder$Statistics]: existing Event has 114 ancestors and is cut-off event [2022-11-21 16:21:46,002 INFO L386 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2022-11-21 16:21:46,003 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2022-11-21 16:21:46,030 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([763] L939-7-->L939-8: Formula: (= |v_#pthreadsMutex_15| (store |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10| (store (select |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10|) |v_~#__global_lock~0.offset_10| 0))) InVars {#pthreadsMutex=|v_#pthreadsMutex_16|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_15|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} AuxVars[] AssignedVars[#pthreadsMutex][161], [t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, 161#L939-8true, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 420#true, Black: 208#(= ~global~0 0), Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 468#(<= ~global~0 1), Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, t_funThread1of3ForFork0NotInUse, 216#true]) [2022-11-21 16:21:46,031 INFO L383 tUnfolder$Statistics]: this new event has 160 ancestors and is cut-off event [2022-11-21 16:21:46,031 INFO L386 tUnfolder$Statistics]: existing Event has 160 ancestors and is cut-off event [2022-11-21 16:21:46,031 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:21:46,031 INFO L386 tUnfolder$Statistics]: existing Event has 160 ancestors and is cut-off event [2022-11-21 16:21:46,395 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][177], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 47#L939-18true, 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 420#true, Black: 208#(= ~global~0 0), Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 468#(<= ~global~0 1), 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:46,395 INFO L383 tUnfolder$Statistics]: this new event has 168 ancestors and is cut-off event [2022-11-21 16:21:46,395 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-21 16:21:46,395 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-21 16:21:46,395 INFO L386 tUnfolder$Statistics]: existing Event has 121 ancestors and is cut-off event [2022-11-21 16:21:46,451 INFO L130 PetriNetUnfolder]: 2833/21058 cut-off events. [2022-11-21 16:21:46,451 INFO L131 PetriNetUnfolder]: For 12771/13290 co-relation queries the response was YES. [2022-11-21 16:21:46,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33284 conditions, 21058 events. 2833/21058 cut-off events. For 12771/13290 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 293682 event pairs, 1095 based on Foata normal form. 692/19308 useless extension candidates. Maximal degree in co-relation 25666. Up to 3031 conditions per place. [2022-11-21 16:21:46,580 INFO L137 encePairwiseOnDemand]: 206/215 looper letters, 55 selfloop transitions, 9 changer transitions 0/290 dead transitions. [2022-11-21 16:21:46,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 290 transitions, 1509 flow [2022-11-21 16:21:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-21 16:21:46,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7646511627906977 [2022-11-21 16:21:46,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-21 16:21:46,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-21 16:21:46,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:46,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-21 16:21:46,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 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 16:21:46,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:46,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:46,588 INFO L175 Difference]: Start difference. First operand has 241 places, 267 transitions, 1326 flow. Second operand 5 states and 822 transitions. [2022-11-21 16:21:46,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 290 transitions, 1509 flow [2022-11-21 16:21:46,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 290 transitions, 1479 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-21 16:21:46,672 INFO L231 Difference]: Finished difference. Result has 243 places, 270 transitions, 1323 flow [2022-11-21 16:21:46,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1323, PETRI_PLACES=243, PETRI_TRANSITIONS=270} [2022-11-21 16:21:46,673 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 50 predicate places. [2022-11-21 16:21:46,673 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 270 transitions, 1323 flow [2022-11-21 16:21:46,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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 16:21:46,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:46,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:46,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:21:46,674 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 16:21:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1352044507, now seen corresponding path program 1 times [2022-11-21 16:21:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:46,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229768298] [2022-11-21 16:21:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:46,777 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 16:21:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:46,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229768298] [2022-11-21 16:21:46,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229768298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:46,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:46,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:21:46,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085174895] [2022-11-21 16:21:46,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:46,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:46,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:21:46,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 215 [2022-11-21 16:21:46,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 270 transitions, 1323 flow. Second operand has 6 states, 6 states have (on average 162.83333333333334) internal successors, (977), 6 states have internal predecessors, (977), 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 16:21:46,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:46,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 215 [2022-11-21 16:21:46,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:49,934 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][184], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 152#L939-3true, Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 420#true, 495#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), 468#(<= ~global~0 1), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 464#true, 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:49,934 INFO L383 tUnfolder$Statistics]: this new event has 155 ancestors and is cut-off event [2022-11-21 16:21:49,934 INFO L386 tUnfolder$Statistics]: existing Event has 108 ancestors and is cut-off event [2022-11-21 16:21:49,934 INFO L386 tUnfolder$Statistics]: existing Event has 108 ancestors and is cut-off event [2022-11-21 16:21:49,934 INFO L386 tUnfolder$Statistics]: existing Event has 155 ancestors and is cut-off event [2022-11-21 16:21:50,021 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][184], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 420#true, 495#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 468#(<= ~global~0 1), 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 424#(<= ~global~0 1), 112#L939-6true, Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:50,022 INFO L383 tUnfolder$Statistics]: this new event has 158 ancestors and is cut-off event [2022-11-21 16:21:50,022 INFO L386 tUnfolder$Statistics]: existing Event has 158 ancestors and is cut-off event [2022-11-21 16:21:50,022 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-21 16:21:50,022 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-21 16:21:50,223 INFO L130 PetriNetUnfolder]: 2754/18653 cut-off events. [2022-11-21 16:21:50,223 INFO L131 PetriNetUnfolder]: For 24109/24791 co-relation queries the response was YES. [2022-11-21 16:21:50,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34968 conditions, 18653 events. 2754/18653 cut-off events. For 24109/24791 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 258352 event pairs, 1209 based on Foata normal form. 299/16865 useless extension candidates. Maximal degree in co-relation 29980. Up to 3613 conditions per place. [2022-11-21 16:21:50,364 INFO L137 encePairwiseOnDemand]: 202/215 looper letters, 141 selfloop transitions, 40 changer transitions 0/352 dead transitions. [2022-11-21 16:21:50,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 352 transitions, 2214 flow [2022-11-21 16:21:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:21:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1569 transitions. [2022-11-21 16:21:50,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8108527131782945 [2022-11-21 16:21:50,368 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1569 transitions. [2022-11-21 16:21:50,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1569 transitions. [2022-11-21 16:21:50,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:50,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1569 transitions. [2022-11-21 16:21:50,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 174.33333333333334) internal successors, (1569), 9 states have internal predecessors, (1569), 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 16:21:50,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 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 16:21:50,377 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 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 16:21:50,377 INFO L175 Difference]: Start difference. First operand has 243 places, 270 transitions, 1323 flow. Second operand 9 states and 1569 transitions. [2022-11-21 16:21:50,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 352 transitions, 2214 flow [2022-11-21 16:21:50,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 352 transitions, 2192 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:21:50,470 INFO L231 Difference]: Finished difference. Result has 250 places, 282 transitions, 1561 flow [2022-11-21 16:21:50,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1561, PETRI_PLACES=250, PETRI_TRANSITIONS=282} [2022-11-21 16:21:50,471 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 57 predicate places. [2022-11-21 16:21:50,471 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 282 transitions, 1561 flow [2022-11-21 16:21:50,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.83333333333334) internal successors, (977), 6 states have internal predecessors, (977), 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 16:21:50,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:50,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:50,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:21:50,472 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 16:21:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 450337847, now seen corresponding path program 1 times [2022-11-21 16:21:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:50,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955774099] [2022-11-21 16:21:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:50,810 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 16:21:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:50,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955774099] [2022-11-21 16:21:50,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955774099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:50,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:50,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:50,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128865166] [2022-11-21 16:21:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:50,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:50,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:50,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 215 [2022-11-21 16:21:50,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 282 transitions, 1561 flow. Second operand has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 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 16:21:50,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:50,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 215 [2022-11-21 16:21:50,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:52,330 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([846] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][140], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 495#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 468#(<= ~global~0 1), Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), 424#(<= ~global~0 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 510#true, Black: 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, Black: 506#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 499#(<= 1 ~global~0), t_funThread1of3ForFork0NotInUse, 216#true, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:52,330 INFO L383 tUnfolder$Statistics]: this new event has 136 ancestors and is cut-off event [2022-11-21 16:21:52,330 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-21 16:21:52,331 INFO L386 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-11-21 16:21:52,331 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-21 16:21:53,249 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][167], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, 66#t_funENTRYtrue, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 420#true, Black: 208#(= ~global~0 0), 495#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), 468#(<= ~global~0 1), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 510#true, Black: 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 506#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 499#(<= 1 ~global~0), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:53,250 INFO L383 tUnfolder$Statistics]: this new event has 148 ancestors and is cut-off event [2022-11-21 16:21:53,250 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-21 16:21:53,250 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-11-21 16:21:53,250 INFO L386 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-11-21 16:21:53,472 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][167], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 152#L939-3true, Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), Black: 208#(= ~global~0 0), 420#true, 495#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), 468#(<= ~global~0 1), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 510#true, Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 506#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 499#(<= 1 ~global~0), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:53,472 INFO L383 tUnfolder$Statistics]: this new event has 155 ancestors and is cut-off event [2022-11-21 16:21:53,472 INFO L386 tUnfolder$Statistics]: existing Event has 108 ancestors and is cut-off event [2022-11-21 16:21:53,472 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-11-21 16:21:53,472 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 16:21:53,795 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][167], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 495#true, 420#true, Black: 208#(= ~global~0 0), Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 468#(<= ~global~0 1), Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 510#true, Black: 424#(<= ~global~0 1), 112#L939-6true, Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, Black: 506#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 499#(<= 1 ~global~0), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:53,795 INFO L383 tUnfolder$Statistics]: this new event has 157 ancestors and is cut-off event [2022-11-21 16:21:53,796 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-21 16:21:53,796 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-21 16:21:53,796 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-21 16:21:53,836 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][167], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 164#L939-16true, 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 420#true, Black: 208#(= ~global~0 0), 495#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 468#(<= ~global~0 1), Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 510#true, Black: 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, Black: 506#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 499#(<= 1 ~global~0), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:53,836 INFO L383 tUnfolder$Statistics]: this new event has 167 ancestors and is cut-off event [2022-11-21 16:21:53,836 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-21 16:21:53,836 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-21 16:21:53,836 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-21 16:21:54,243 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][167], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), 156#L939-13true, Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 495#true, 420#true, Black: 208#(= ~global~0 0), Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 468#(<= ~global~0 1), Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 510#true, Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, Black: 506#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 499#(<= 1 ~global~0), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:54,243 INFO L383 tUnfolder$Statistics]: this new event has 163 ancestors and is cut-off event [2022-11-21 16:21:54,243 INFO L386 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-11-21 16:21:54,243 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2022-11-21 16:21:54,244 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-21 16:21:54,279 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][167], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 164#L939-16true, 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 456#(= ~global~0 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 495#true, 420#true, Black: 208#(= ~global~0 0), Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 468#(<= ~global~0 1), Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 510#true, Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, Black: 506#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 499#(<= 1 ~global~0), 216#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:54,279 INFO L383 tUnfolder$Statistics]: this new event has 166 ancestors and is cut-off event [2022-11-21 16:21:54,279 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-21 16:21:54,279 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-21 16:21:54,279 INFO L386 tUnfolder$Statistics]: existing Event has 119 ancestors and is cut-off event [2022-11-21 16:21:54,283 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([847] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][167], [t_funThread3of3ForFork0NotInUse, Black: 450#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 443#(<= 1 ~global~0), 229#(<= 1 |ULTIMATE.start_main_~i~1#1|), 164#L939-16true, 56#L952-4true, Black: 201#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 456#(= ~global~0 0), Black: 198#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 459#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 420#true, Black: 208#(= ~global~0 0), 495#true, Black: 209#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 475#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 439#true, Black: 468#(<= ~global~0 1), Black: 467#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 469#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 473#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 490#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 510#true, Black: 492#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 424#(<= ~global~0 1), Black: 425#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 431#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 429#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 464#true, Black: 506#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), 216#true, Black: 499#(<= 1 ~global~0), t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse]) [2022-11-21 16:21:54,283 INFO L383 tUnfolder$Statistics]: this new event has 167 ancestors and is cut-off event [2022-11-21 16:21:54,283 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-21 16:21:54,283 INFO L386 tUnfolder$Statistics]: existing Event has 167 ancestors and is cut-off event [2022-11-21 16:21:54,283 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-21 16:21:54,283 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-21 16:21:54,333 INFO L130 PetriNetUnfolder]: 2424/17123 cut-off events. [2022-11-21 16:21:54,333 INFO L131 PetriNetUnfolder]: For 24650/25303 co-relation queries the response was YES. [2022-11-21 16:21:54,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32617 conditions, 17123 events. 2424/17123 cut-off events. For 24650/25303 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 231886 event pairs, 1401 based on Foata normal form. 224/15141 useless extension candidates. Maximal degree in co-relation 24721. Up to 3860 conditions per place. [2022-11-21 16:21:54,445 INFO L137 encePairwiseOnDemand]: 207/215 looper letters, 136 selfloop transitions, 12 changer transitions 0/328 dead transitions. [2022-11-21 16:21:54,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 328 transitions, 2260 flow [2022-11-21 16:21:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 890 transitions. [2022-11-21 16:21:54,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.827906976744186 [2022-11-21 16:21:54,448 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 890 transitions. [2022-11-21 16:21:54,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 890 transitions. [2022-11-21 16:21:54,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:54,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 890 transitions. [2022-11-21 16:21:54,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 16:21:54,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:54,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 16:21:54,453 INFO L175 Difference]: Start difference. First operand has 250 places, 282 transitions, 1561 flow. Second operand 5 states and 890 transitions. [2022-11-21 16:21:54,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 328 transitions, 2260 flow [2022-11-21 16:21:54,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 328 transitions, 2197 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-21 16:21:54,537 INFO L231 Difference]: Finished difference. Result has 253 places, 286 transitions, 1593 flow [2022-11-21 16:21:54,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1593, PETRI_PLACES=253, PETRI_TRANSITIONS=286} [2022-11-21 16:21:54,538 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 60 predicate places. [2022-11-21 16:21:54,538 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 286 transitions, 1593 flow [2022-11-21 16:21:54,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 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 16:21:54,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:54,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:54,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 16:21:54,539 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 16:21:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1697928844, now seen corresponding path program 1 times [2022-11-21 16:21:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:54,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996184761] [2022-11-21 16:21:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:54,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:21:54,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:21:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:21:54,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:21:54,596 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:21:54,596 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-21 16:21:54,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-21 16:21:54,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-21 16:21:54,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-21 16:21:54,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-21 16:21:54,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-21 16:21:54,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-21 16:21:54,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-21 16:21:54,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-21 16:21:54,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-21 16:21:54,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-21 16:21:54,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-21 16:21:54,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-21 16:21:54,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-21 16:21:54,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-21 16:21:54,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-21 16:21:54,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-21 16:21:54,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-21 16:21:54,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-21 16:21:54,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-21 16:21:54,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-21 16:21:54,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:21:54,602 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:54,602 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:21:54,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-21 16:21:54,629 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 16:21:54,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 253 transitions, 550 flow [2022-11-21 16:21:54,725 INFO L130 PetriNetUnfolder]: 96/706 cut-off events. [2022-11-21 16:21:54,725 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-21 16:21:54,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 706 events. 96/706 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2758 event pairs, 6 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 482. Up to 32 conditions per place. [2022-11-21 16:21:54,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 253 transitions, 550 flow [2022-11-21 16:21:54,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 253 transitions, 550 flow [2022-11-21 16:21:54,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:21:54,736 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;@10c15ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:21:54,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-21 16:21:54,741 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-21 16:21:54,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:21:54,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:54,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:54,742 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 16:21:54,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1749547820, now seen corresponding path program 1 times [2022-11-21 16:21:54,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:54,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233478147] [2022-11-21 16:21:54,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:54,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:54,786 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 16:21:54,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:54,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233478147] [2022-11-21 16:21:54,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233478147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:54,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:54,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:54,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925594952] [2022-11-21 16:21:54,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:54,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:54,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:54,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:54,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:54,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 253 [2022-11-21 16:21:54,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 253 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 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 16:21:54,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:54,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 253 [2022-11-21 16:21:54,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:54,938 INFO L130 PetriNetUnfolder]: 32/614 cut-off events. [2022-11-21 16:21:54,938 INFO L131 PetriNetUnfolder]: For 187/403 co-relation queries the response was YES. [2022-11-21 16:21:54,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 614 events. 32/614 cut-off events. For 187/403 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2527 event pairs, 6 based on Foata normal form. 629/1155 useless extension candidates. Maximal degree in co-relation 465. Up to 71 conditions per place. [2022-11-21 16:21:54,945 INFO L137 encePairwiseOnDemand]: 217/253 looper letters, 23 selfloop transitions, 4 changer transitions 0/230 dead transitions. [2022-11-21 16:21:54,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 230 transitions, 558 flow [2022-11-21 16:21:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:21:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:21:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1093 transitions. [2022-11-21 16:21:54,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8640316205533597 [2022-11-21 16:21:54,948 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1093 transitions. [2022-11-21 16:21:54,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1093 transitions. [2022-11-21 16:21:54,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:54,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1093 transitions. [2022-11-21 16:21:54,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.6) internal successors, (1093), 5 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:54,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 16:21:54,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 16:21:54,956 INFO L175 Difference]: Start difference. First operand has 226 places, 253 transitions, 550 flow. Second operand 5 states and 1093 transitions. [2022-11-21 16:21:54,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 230 transitions, 558 flow [2022-11-21 16:21:54,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 230 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:21:54,961 INFO L231 Difference]: Finished difference. Result has 232 places, 226 transitions, 522 flow [2022-11-21 16:21:54,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=232, PETRI_TRANSITIONS=226} [2022-11-21 16:21:54,964 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 6 predicate places. [2022-11-21 16:21:54,965 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 226 transitions, 522 flow [2022-11-21 16:21:54,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 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 16:21:54,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:54,965 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 16:21:54,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 16:21:54,966 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 16:21:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 646637256, now seen corresponding path program 1 times [2022-11-21 16:21:54,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:54,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673165857] [2022-11-21 16:21:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:54,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:55,017 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 16:21:55,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:55,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673165857] [2022-11-21 16:21:55,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673165857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:55,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:55,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073439934] [2022-11-21 16:21:55,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:55,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:21:55,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:55,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:21:55,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:21:55,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 253 [2022-11-21 16:21:55,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 226 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:21:55,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:55,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 253 [2022-11-21 16:21:55,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:22:03,168 INFO L130 PetriNetUnfolder]: 15405/55136 cut-off events. [2022-11-21 16:22:03,168 INFO L131 PetriNetUnfolder]: For 11736/12911 co-relation queries the response was YES. [2022-11-21 16:22:03,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80157 conditions, 55136 events. 15405/55136 cut-off events. For 11736/12911 co-relation queries the response was YES. Maximal size of possible extension queue 2171. Compared 799297 event pairs, 6525 based on Foata normal form. 0/48786 useless extension candidates. Maximal degree in co-relation 80085. Up to 15272 conditions per place. [2022-11-21 16:22:03,814 INFO L137 encePairwiseOnDemand]: 244/253 looper letters, 68 selfloop transitions, 10 changer transitions 0/273 dead transitions. [2022-11-21 16:22:03,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 273 transitions, 844 flow [2022-11-21 16:22:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:22:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:22:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1042 transitions. [2022-11-21 16:22:03,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8237154150197629 [2022-11-21 16:22:03,818 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1042 transitions. [2022-11-21 16:22:03,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1042 transitions. [2022-11-21 16:22:03,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:22:03,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1042 transitions. [2022-11-21 16:22:03,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.4) internal successors, (1042), 5 states have internal predecessors, (1042), 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 16:22:03,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 16:22:03,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 16:22:03,826 INFO L175 Difference]: Start difference. First operand has 232 places, 226 transitions, 522 flow. Second operand 5 states and 1042 transitions. [2022-11-21 16:22:03,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 273 transitions, 844 flow [2022-11-21 16:22:03,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 273 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:22:03,837 INFO L231 Difference]: Finished difference. Result has 238 places, 235 transitions, 599 flow [2022-11-21 16:22:03,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=238, PETRI_TRANSITIONS=235} [2022-11-21 16:22:03,838 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 12 predicate places. [2022-11-21 16:22:03,839 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 235 transitions, 599 flow [2022-11-21 16:22:03,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:22:03,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:22:03,840 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:22:03,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 16:22:03,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 16:22:03,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash -350784415, now seen corresponding path program 1 times [2022-11-21 16:22:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:03,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908366749] [2022-11-21 16:22:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:03,890 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 16:22:03,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:03,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908366749] [2022-11-21 16:22:03,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908366749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:03,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:03,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:22:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733774935] [2022-11-21 16:22:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:03,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:22:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:22:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:22:03,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 253 [2022-11-21 16:22:03,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 235 transitions, 599 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 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 16:22:03,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:22:03,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 253 [2022-11-21 16:22:03,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:22:04,443 INFO L130 PetriNetUnfolder]: 164/2217 cut-off events. [2022-11-21 16:22:04,443 INFO L131 PetriNetUnfolder]: For 1017/2637 co-relation queries the response was YES. [2022-11-21 16:22:04,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 2217 events. 164/2217 cut-off events. For 1017/2637 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 17879 event pairs, 48 based on Foata normal form. 90/1973 useless extension candidates. Maximal degree in co-relation 2075. Up to 171 conditions per place. [2022-11-21 16:22:04,473 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 15 selfloop transitions, 8 changer transitions 0/235 dead transitions. [2022-11-21 16:22:04,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 235 transitions, 643 flow [2022-11-21 16:22:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:22:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:22:04,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1036 transitions. [2022-11-21 16:22:04,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8189723320158103 [2022-11-21 16:22:04,476 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1036 transitions. [2022-11-21 16:22:04,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1036 transitions. [2022-11-21 16:22:04,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:22:04,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1036 transitions. [2022-11-21 16:22:04,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 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 16:22:04,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 16:22:04,482 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 16:22:04,483 INFO L175 Difference]: Start difference. First operand has 238 places, 235 transitions, 599 flow. Second operand 5 states and 1036 transitions. [2022-11-21 16:22:04,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 235 transitions, 643 flow [2022-11-21 16:22:04,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 235 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:22:04,489 INFO L231 Difference]: Finished difference. Result has 241 places, 235 transitions, 614 flow [2022-11-21 16:22:04,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=241, PETRI_TRANSITIONS=235} [2022-11-21 16:22:04,490 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 15 predicate places. [2022-11-21 16:22:04,491 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 235 transitions, 614 flow [2022-11-21 16:22:04,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 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 16:22:04,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:22:04,492 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:22:04,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 16:22:04,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 16:22:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2010585949, now seen corresponding path program 1 times [2022-11-21 16:22:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646979830] [2022-11-21 16:22:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:04,586 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 16:22:04,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:04,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646979830] [2022-11-21 16:22:04,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646979830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:22:04,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980977432] [2022-11-21 16:22:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:04,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:22:04,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:22:04,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:22:04,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:22:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:04,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:22:04,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:22:04,995 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 16:22:04,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:22:04,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980977432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:04,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:22:04,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:22:04,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645372407] [2022-11-21 16:22:04,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:04,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:22:04,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:04,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:22:04,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:22:04,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 253 [2022-11-21 16:22:05,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 235 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 205.66666666666666) internal successors, (1234), 6 states have internal predecessors, (1234), 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 16:22:05,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:22:05,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 253 [2022-11-21 16:22:05,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:22:05,405 INFO L130 PetriNetUnfolder]: 164/2214 cut-off events. [2022-11-21 16:22:05,405 INFO L131 PetriNetUnfolder]: For 991/2464 co-relation queries the response was YES. [2022-11-21 16:22:05,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 2214 events. 164/2214 cut-off events. For 991/2464 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 17930 event pairs, 48 based on Foata normal form. 35/1915 useless extension candidates. Maximal degree in co-relation 2074. Up to 180 conditions per place. [2022-11-21 16:22:05,433 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 19 selfloop transitions, 6 changer transitions 0/237 dead transitions. [2022-11-21 16:22:05,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 237 transitions, 666 flow [2022-11-21 16:22:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:22:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:22:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1447 transitions. [2022-11-21 16:22:05,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8170525127046866 [2022-11-21 16:22:05,436 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1447 transitions. [2022-11-21 16:22:05,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1447 transitions. [2022-11-21 16:22:05,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:22:05,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1447 transitions. [2022-11-21 16:22:05,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.71428571428572) internal successors, (1447), 7 states have internal predecessors, (1447), 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 16:22:05,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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 16:22:05,443 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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 16:22:05,443 INFO L175 Difference]: Start difference. First operand has 241 places, 235 transitions, 614 flow. Second operand 7 states and 1447 transitions. [2022-11-21 16:22:05,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 237 transitions, 666 flow [2022-11-21 16:22:05,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 237 transitions, 654 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:22:05,448 INFO L231 Difference]: Finished difference. Result has 243 places, 234 transitions, 610 flow [2022-11-21 16:22:05,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=610, PETRI_PLACES=243, PETRI_TRANSITIONS=234} [2022-11-21 16:22:05,449 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 17 predicate places. [2022-11-21 16:22:05,450 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 234 transitions, 610 flow [2022-11-21 16:22:05,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.66666666666666) internal successors, (1234), 6 states have internal predecessors, (1234), 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 16:22:05,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:22:05,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:22:05,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:22:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfe09d2-6e9b-431c-816b-a98a47afa675/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-21 16:22:05,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 16:22:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1622247711, now seen corresponding path program 1 times [2022-11-21 16:22:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:05,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414608648] [2022-11-21 16:22:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:05,736 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 16:22:05,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:05,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414608648] [2022-11-21 16:22:05,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414608648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:05,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:05,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:22:05,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579419739] [2022-11-21 16:22:05,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:22:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:22:05,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:22:05,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 253 [2022-11-21 16:22:05,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 234 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 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 16:22:05,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:22:05,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 253 [2022-11-21 16:22:05,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand