./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8 --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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- 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-e04fb08 [2022-11-16 11:47:25,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:47:25,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:47:25,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:47:25,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:47:25,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:47:25,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:47:25,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:47:25,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:47:25,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:47:25,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:47:25,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:47:25,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:47:25,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:47:25,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:47:25,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:47:25,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:47:25,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:47:25,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:47:25,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:47:25,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:47:25,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:47:25,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:47:25,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:47:25,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:47:25,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:47:25,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:47:25,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:47:25,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:47:25,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:47:25,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:47:25,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:47:25,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:47:25,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:47:25,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:47:25,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:47:25,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:47:25,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:47:25,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:47:25,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:47:25,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:47:25,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:47:25,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:47:25,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:47:25,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:47:25,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:47:25,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:47:25,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:47:25,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:47:25,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:47:25,871 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:47:25,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:47:25,871 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:47:25,872 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:47:25,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:47:25,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:47:25,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:47:25,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:47:25,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:47:25,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:47:25,874 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:47:25,875 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:47:25,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:47:25,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:47:25,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:47:25,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:47:25,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:47:25,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:47:25,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:47:25,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:47:25,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:47:25,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:47:25,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:47:25,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:47:25,880 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:47:25,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:47:25,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:47:25,881 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_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2022-11-16 11:47:26,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:47:26,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:47:26,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:47:26,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:47:26,266 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:47:26,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-16 11:47:26,364 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/data/4c251f3ce/47422a0dec3e4bb9a53be17b386c3e5b/FLAG18b3128e9 [2022-11-16 11:47:27,062 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:47:27,063 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-16 11:47:27,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/data/4c251f3ce/47422a0dec3e4bb9a53be17b386c3e5b/FLAG18b3128e9 [2022-11-16 11:47:27,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/data/4c251f3ce/47422a0dec3e4bb9a53be17b386c3e5b [2022-11-16 11:47:27,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:47:27,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:47:27,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:47:27,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:47:27,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:47:27,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:27,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663de9e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27, skipping insertion in model container [2022-11-16 11:47:27,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:27,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:47:27,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:47:27,669 WARN L229 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_2b595c28-7d53-43a7-888e-41d890792a47/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-16 11:47:27,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:47:27,824 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:47:27,837 WARN L229 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_2b595c28-7d53-43a7-888e-41d890792a47/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-16 11:47:27,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:47:27,912 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:47:27,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27 WrapperNode [2022-11-16 11:47:27,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:47:27,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:47:27,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:47:27,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:47:27,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:27,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,002 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-16 11:47:28,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:47:28,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:47:28,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:47:28,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:47:28,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,048 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:47:28,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:47:28,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:47:28,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:47:28,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (1/1) ... [2022-11-16 11:47:28,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:47:28,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:28,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:47:28,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:47:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-16 11:47:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-16 11:47:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:47:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:47:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:47:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:47:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:47:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:47:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:47:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:47:28,168 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:47:28,381 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:47:28,384 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:47:28,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:47:28,653 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:47:28,653 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:47:28,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:47:28 BoogieIcfgContainer [2022-11-16 11:47:28,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:47:28,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:47:28,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:47:28,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:47:28,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:47:27" (1/3) ... [2022-11-16 11:47:28,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508613f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:47:28, skipping insertion in model container [2022-11-16 11:47:28,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:27" (2/3) ... [2022-11-16 11:47:28,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508613f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:47:28, skipping insertion in model container [2022-11-16 11:47:28,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:47:28" (3/3) ... [2022-11-16 11:47:28,668 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-11-16 11:47:28,678 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:47:28,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:47:28,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:47:28,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:47:28,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:47:28,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 259 flow [2022-11-16 11:47:28,863 INFO L130 PetriNetUnfolder]: 10/126 cut-off events. [2022-11-16 11:47:28,867 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:47:28,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 126 events. 10/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-16 11:47:28,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 127 transitions, 259 flow [2022-11-16 11:47:28,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 126 transitions, 255 flow [2022-11-16 11:47:28,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:47:28,928 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;@373d48c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:47:28,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:47:28,979 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-16 11:47:28,980 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:47:28,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:28,981 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] [2022-11-16 11:47:28,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2124300518, now seen corresponding path program 1 times [2022-11-16 11:47:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:29,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867582209] [2022-11-16 11:47:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:29,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:29,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:29,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867582209] [2022-11-16 11:47:29,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867582209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:29,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:29,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:47:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426454339] [2022-11-16 11:47:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:29,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:47:29,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:47:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:47:29,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 11:47:29,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:29,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:29,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 11:47:29,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:30,017 INFO L130 PetriNetUnfolder]: 127/500 cut-off events. [2022-11-16 11:47:30,017 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:47:30,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 500 events. 127/500 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2382 event pairs, 44 based on Foata normal form. 51/450 useless extension candidates. Maximal degree in co-relation 692. Up to 190 conditions per place. [2022-11-16 11:47:30,026 INFO L137 encePairwiseOnDemand]: 113/127 looper letters, 36 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2022-11-16 11:47:30,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 135 transitions, 353 flow [2022-11-16 11:47:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:47:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:47:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-11-16 11:47:30,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2022-11-16 11:47:30,073 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-11-16 11:47:30,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-11-16 11:47:30,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:30,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-11-16 11:47:30,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,110 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,112 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 255 flow. Second operand 5 states and 555 transitions. [2022-11-16 11:47:30,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 135 transitions, 353 flow [2022-11-16 11:47:30,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:47:30,142 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 270 flow [2022-11-16 11:47:30,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2022-11-16 11:47:30,150 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2022-11-16 11:47:30,150 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 270 flow [2022-11-16 11:47:30,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:30,151 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] [2022-11-16 11:47:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:47:30,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1339575174, now seen corresponding path program 1 times [2022-11-16 11:47:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:30,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393910949] [2022-11-16 11:47:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:30,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:30,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:30,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393910949] [2022-11-16 11:47:30,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393910949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:30,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:30,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:47:30,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911033377] [2022-11-16 11:47:30,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:30,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:47:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:47:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:47:30,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-16 11:47:30,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:30,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-16 11:47:30,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:30,676 INFO L130 PetriNetUnfolder]: 24/333 cut-off events. [2022-11-16 11:47:30,676 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 11:47:30,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 333 events. 24/333 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1032 event pairs, 5 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 354. Up to 20 conditions per place. [2022-11-16 11:47:30,682 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 15 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2022-11-16 11:47:30,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 322 flow [2022-11-16 11:47:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:47:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:47:30,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-11-16 11:47:30,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755905511811024 [2022-11-16 11:47:30,689 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-11-16 11:47:30,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-11-16 11:47:30,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:30,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-11-16 11:47:30,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,701 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 270 flow. Second operand 5 states and 556 transitions. [2022-11-16 11:47:30,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 322 flow [2022-11-16 11:47:30,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 126 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:47:30,707 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 298 flow [2022-11-16 11:47:30,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-11-16 11:47:30,708 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 7 predicate places. [2022-11-16 11:47:30,709 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 298 flow [2022-11-16 11:47:30,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:30,710 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:30,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:47:30,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1433621385, now seen corresponding path program 1 times [2022-11-16 11:47:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:30,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657304454] [2022-11-16 11:47:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:30,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:30,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:30,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657304454] [2022-11-16 11:47:30,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657304454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:30,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:30,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:47:30,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437330301] [2022-11-16 11:47:30,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:30,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:47:30,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:47:30,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:47:30,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2022-11-16 11:47:30,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:30,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:30,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2022-11-16 11:47:30,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:30,991 INFO L130 PetriNetUnfolder]: 11/215 cut-off events. [2022-11-16 11:47:30,991 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:47:30,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 215 events. 11/215 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 446 event pairs, 1 based on Foata normal form. 5/207 useless extension candidates. Maximal degree in co-relation 226. Up to 16 conditions per place. [2022-11-16 11:47:30,994 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 8 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2022-11-16 11:47:30,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 324 flow [2022-11-16 11:47:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:47:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:47:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2022-11-16 11:47:30,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2022-11-16 11:47:30,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2022-11-16 11:47:30,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2022-11-16 11:47:30,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:30,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2022-11-16 11:47:31,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,004 INFO L175 Difference]: Start difference. First operand has 127 places, 122 transitions, 298 flow. Second operand 3 states and 333 transitions. [2022-11-16 11:47:31,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 324 flow [2022-11-16 11:47:31,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 122 transitions, 320 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 11:47:31,010 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 304 flow [2022-11-16 11:47:31,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2022-11-16 11:47:31,012 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 8 predicate places. [2022-11-16 11:47:31,012 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 304 flow [2022-11-16 11:47:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:31,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:31,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:47:31,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:31,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:31,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1352589206, now seen corresponding path program 1 times [2022-11-16 11:47:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:31,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145696390] [2022-11-16 11:47:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:31,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:31,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145696390] [2022-11-16 11:47:31,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145696390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:31,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:31,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:47:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642409068] [2022-11-16 11:47:31,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:47:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:47:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:47:31,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-16 11:47:31,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:31,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-16 11:47:31,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:31,405 INFO L130 PetriNetUnfolder]: 98/502 cut-off events. [2022-11-16 11:47:31,405 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-16 11:47:31,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 502 events. 98/502 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2258 event pairs, 20 based on Foata normal form. 3/457 useless extension candidates. Maximal degree in co-relation 774. Up to 81 conditions per place. [2022-11-16 11:47:31,410 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 51 selfloop transitions, 10 changer transitions 0/153 dead transitions. [2022-11-16 11:47:31,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 153 transitions, 498 flow [2022-11-16 11:47:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:47:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:47:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions. [2022-11-16 11:47:31,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864173228346457 [2022-11-16 11:47:31,414 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions. [2022-11-16 11:47:31,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions. [2022-11-16 11:47:31,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:31,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions. [2022-11-16 11:47:31,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,422 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,422 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 304 flow. Second operand 8 states and 799 transitions. [2022-11-16 11:47:31,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 153 transitions, 498 flow [2022-11-16 11:47:31,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 153 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:47:31,428 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 362 flow [2022-11-16 11:47:31,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2022-11-16 11:47:31,429 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2022-11-16 11:47:31,429 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 362 flow [2022-11-16 11:47:31,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:31,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:31,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:47:31,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2077127589, now seen corresponding path program 1 times [2022-11-16 11:47:31,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:31,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213049827] [2022-11-16 11:47:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:31,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:31,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213049827] [2022-11-16 11:47:31,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213049827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:31,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:31,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:47:31,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437559358] [2022-11-16 11:47:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:31,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:47:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:47:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:47:31,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 11:47:31,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:31,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 11:47:31,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:31,641 INFO L130 PetriNetUnfolder]: 36/474 cut-off events. [2022-11-16 11:47:31,642 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-11-16 11:47:31,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 474 events. 36/474 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1573 event pairs, 8 based on Foata normal form. 7/465 useless extension candidates. Maximal degree in co-relation 682. Up to 57 conditions per place. [2022-11-16 11:47:31,646 INFO L137 encePairwiseOnDemand]: 118/127 looper letters, 23 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2022-11-16 11:47:31,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 426 flow [2022-11-16 11:47:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:47:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:47:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-16 11:47:31,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815748031496063 [2022-11-16 11:47:31,649 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-16 11:47:31,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-16 11:47:31,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:31,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-16 11:47:31,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,655 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 362 flow. Second operand 5 states and 518 transitions. [2022-11-16 11:47:31,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 426 flow [2022-11-16 11:47:31,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:47:31,661 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 384 flow [2022-11-16 11:47:31,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-11-16 11:47:31,662 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2022-11-16 11:47:31,662 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 384 flow [2022-11-16 11:47:31,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:31,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:31,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:47:31,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:31,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash -599517259, now seen corresponding path program 1 times [2022-11-16 11:47:31,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:31,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290958180] [2022-11-16 11:47:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:31,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:47:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:31,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290958180] [2022-11-16 11:47:31,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290958180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:31,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:31,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:47:31,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815407857] [2022-11-16 11:47:31,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:31,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:47:31,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:31,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:47:31,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:47:31,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 11:47:31,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:31,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 11:47:31,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:31,957 INFO L130 PetriNetUnfolder]: 53/474 cut-off events. [2022-11-16 11:47:31,958 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-11-16 11:47:31,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 474 events. 53/474 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1744 event pairs, 17 based on Foata normal form. 6/454 useless extension candidates. Maximal degree in co-relation 768. Up to 59 conditions per place. [2022-11-16 11:47:31,963 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 23 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2022-11-16 11:47:31,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 133 transitions, 485 flow [2022-11-16 11:47:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:47:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:47:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-16 11:47:31,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815748031496063 [2022-11-16 11:47:31,966 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-16 11:47:31,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-16 11:47:31,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:31,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-16 11:47:31,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,974 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 384 flow. Second operand 5 states and 518 transitions. [2022-11-16 11:47:31,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 133 transitions, 485 flow [2022-11-16 11:47:31,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:47:31,984 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 428 flow [2022-11-16 11:47:31,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2022-11-16 11:47:31,987 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 20 predicate places. [2022-11-16 11:47:31,988 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 428 flow [2022-11-16 11:47:31,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:31,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:31,989 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:31,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:47:31,989 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:31,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:31,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1405165579, now seen corresponding path program 1 times [2022-11-16 11:47:31,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:31,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929799744] [2022-11-16 11:47:31,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:31,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:32,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:32,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929799744] [2022-11-16 11:47:32,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929799744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:32,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474484623] [2022-11-16 11:47:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:32,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:32,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:32,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:32,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:47:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:47:32,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:32,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:47:32,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474484623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:32,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:32,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:47:32,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502087577] [2022-11-16 11:47:32,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:32,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:47:32,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:47:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:47:32,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 11:47:32,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:32,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:32,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 11:47:32,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:32,735 INFO L130 PetriNetUnfolder]: 55/521 cut-off events. [2022-11-16 11:47:32,735 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-11-16 11:47:32,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 521 events. 55/521 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1772 event pairs, 14 based on Foata normal form. 9/503 useless extension candidates. Maximal degree in co-relation 893. Up to 76 conditions per place. [2022-11-16 11:47:32,742 INFO L137 encePairwiseOnDemand]: 118/127 looper letters, 34 selfloop transitions, 10 changer transitions 2/143 dead transitions. [2022-11-16 11:47:32,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 143 transitions, 598 flow [2022-11-16 11:47:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:47:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:47:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2022-11-16 11:47:32,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8155230596175478 [2022-11-16 11:47:32,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2022-11-16 11:47:32,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2022-11-16 11:47:32,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:32,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2022-11-16 11:47:32,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:32,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:32,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:32,754 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 428 flow. Second operand 7 states and 725 transitions. [2022-11-16 11:47:32,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 143 transitions, 598 flow [2022-11-16 11:47:32,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 578 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-16 11:47:32,761 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 492 flow [2022-11-16 11:47:32,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2022-11-16 11:47:32,762 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2022-11-16 11:47:32,762 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 492 flow [2022-11-16 11:47:32,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:32,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:32,763 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:47:32,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:32,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:47:32,971 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2109417909, now seen corresponding path program 1 times [2022-11-16 11:47:32,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:32,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542837890] [2022-11-16 11:47:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:33,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:33,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542837890] [2022-11-16 11:47:33,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542837890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:33,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743238293] [2022-11-16 11:47:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:33,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:33,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:33,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:33,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:47:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:33,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:47:33,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:33,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:33,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743238293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:33,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:33,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:47:33,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517246336] [2022-11-16 11:47:33,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:33,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:47:33,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:47:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:47:33,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-16 11:47:33,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 492 flow. Second operand has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:33,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:33,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-16 11:47:33,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:33,958 INFO L130 PetriNetUnfolder]: 47/884 cut-off events. [2022-11-16 11:47:33,958 INFO L131 PetriNetUnfolder]: For 669/669 co-relation queries the response was YES. [2022-11-16 11:47:33,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 884 events. 47/884 cut-off events. For 669/669 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3676 event pairs, 0 based on Foata normal form. 9/862 useless extension candidates. Maximal degree in co-relation 1550. Up to 51 conditions per place. [2022-11-16 11:47:33,969 INFO L137 encePairwiseOnDemand]: 120/127 looper letters, 23 selfloop transitions, 18 changer transitions 1/159 dead transitions. [2022-11-16 11:47:33,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 159 transitions, 652 flow [2022-11-16 11:47:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:47:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:47:33,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1971 transitions. [2022-11-16 11:47:33,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8622047244094488 [2022-11-16 11:47:33,978 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1971 transitions. [2022-11-16 11:47:33,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1971 transitions. [2022-11-16 11:47:33,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:33,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1971 transitions. [2022-11-16 11:47:33,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 109.5) internal successors, (1971), 18 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:33,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:33,997 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:33,998 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 492 flow. Second operand 18 states and 1971 transitions. [2022-11-16 11:47:33,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 159 transitions, 652 flow [2022-11-16 11:47:34,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 159 transitions, 644 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 11:47:34,007 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 590 flow [2022-11-16 11:47:34,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=590, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2022-11-16 11:47:34,012 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 45 predicate places. [2022-11-16 11:47:34,012 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 590 flow [2022-11-16 11:47:34,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:34,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:34,014 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:47:34,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:34,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:34,221 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:34,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash -967445431, now seen corresponding path program 1 times [2022-11-16 11:47:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:34,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760059115] [2022-11-16 11:47:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:34,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:34,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760059115] [2022-11-16 11:47:34,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760059115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:34,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621178738] [2022-11-16 11:47:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:34,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:34,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:34,388 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:34,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:47:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:34,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:47:34,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:34,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:47:34,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621178738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:34,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:34,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:47:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055723263] [2022-11-16 11:47:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:47:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:47:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:47:34,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-16 11:47:34,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:34,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:34,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-16 11:47:34,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:34,947 INFO L130 PetriNetUnfolder]: 47/871 cut-off events. [2022-11-16 11:47:34,948 INFO L131 PetriNetUnfolder]: For 756/756 co-relation queries the response was YES. [2022-11-16 11:47:34,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 871 events. 47/871 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3575 event pairs, 0 based on Foata normal form. 13/853 useless extension candidates. Maximal degree in co-relation 1582. Up to 56 conditions per place. [2022-11-16 11:47:34,958 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 15 selfloop transitions, 11 changer transitions 1/144 dead transitions. [2022-11-16 11:47:34,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 144 transitions, 627 flow [2022-11-16 11:47:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:47:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:47:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-11-16 11:47:34,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638920134983127 [2022-11-16 11:47:34,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-11-16 11:47:34,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-11-16 11:47:34,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:34,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-11-16 11:47:34,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:34,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:34,969 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:34,969 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 590 flow. Second operand 7 states and 768 transitions. [2022-11-16 11:47:34,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 144 transitions, 627 flow [2022-11-16 11:47:34,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 144 transitions, 595 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:47:34,978 INFO L231 Difference]: Finished difference. Result has 161 places, 140 transitions, 553 flow [2022-11-16 11:47:34,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=553, PETRI_PLACES=161, PETRI_TRANSITIONS=140} [2022-11-16 11:47:34,979 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 41 predicate places. [2022-11-16 11:47:34,979 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 140 transitions, 553 flow [2022-11-16 11:47:34,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:34,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:34,980 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:34,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:35,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:35,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:35,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash 683352357, now seen corresponding path program 1 times [2022-11-16 11:47:35,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:35,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270542362] [2022-11-16 11:47:35,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:35,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270542362] [2022-11-16 11:47:35,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270542362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281236558] [2022-11-16 11:47:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:35,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:35,344 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:35,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:47:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:35,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:47:35,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:35,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:35,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281236558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:35,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:35,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 11:47:35,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571198480] [2022-11-16 11:47:35,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:35,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:47:35,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:35,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:47:35,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:47:35,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-16 11:47:35,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 140 transitions, 553 flow. Second operand has 16 states, 16 states have (on average 95.3125) internal successors, (1525), 16 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:35,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:35,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-16 11:47:35,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:36,365 INFO L130 PetriNetUnfolder]: 268/1599 cut-off events. [2022-11-16 11:47:36,365 INFO L131 PetriNetUnfolder]: For 2060/2060 co-relation queries the response was YES. [2022-11-16 11:47:36,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1599 events. 268/1599 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9718 event pairs, 46 based on Foata normal form. 42/1566 useless extension candidates. Maximal degree in co-relation 3345. Up to 132 conditions per place. [2022-11-16 11:47:36,379 INFO L137 encePairwiseOnDemand]: 114/127 looper letters, 63 selfloop transitions, 34 changer transitions 2/198 dead transitions. [2022-11-16 11:47:36,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 198 transitions, 1013 flow [2022-11-16 11:47:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:47:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:47:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2021 transitions. [2022-11-16 11:47:36,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7577802774653168 [2022-11-16 11:47:36,385 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2021 transitions. [2022-11-16 11:47:36,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2021 transitions. [2022-11-16 11:47:36,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:36,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2021 transitions. [2022-11-16 11:47:36,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.23809523809524) internal successors, (2021), 21 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:36,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 127.0) internal successors, (2794), 22 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:36,398 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 127.0) internal successors, (2794), 22 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:36,398 INFO L175 Difference]: Start difference. First operand has 161 places, 140 transitions, 553 flow. Second operand 21 states and 2021 transitions. [2022-11-16 11:47:36,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 198 transitions, 1013 flow [2022-11-16 11:47:36,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 198 transitions, 978 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-16 11:47:36,408 INFO L231 Difference]: Finished difference. Result has 179 places, 154 transitions, 743 flow [2022-11-16 11:47:36,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=743, PETRI_PLACES=179, PETRI_TRANSITIONS=154} [2022-11-16 11:47:36,409 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 59 predicate places. [2022-11-16 11:47:36,409 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 154 transitions, 743 flow [2022-11-16 11:47:36,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.3125) internal successors, (1525), 16 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:36,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:36,411 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:36,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:36,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:47:36,617 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash -380133699, now seen corresponding path program 1 times [2022-11-16 11:47:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091254704] [2022-11-16 11:47:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:47:36,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:36,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091254704] [2022-11-16 11:47:36,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091254704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:36,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:36,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:47:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135535983] [2022-11-16 11:47:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:47:36,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:47:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:47:36,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-16 11:47:36,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 154 transitions, 743 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:36,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:36,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-16 11:47:36,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:37,270 INFO L130 PetriNetUnfolder]: 267/1654 cut-off events. [2022-11-16 11:47:37,270 INFO L131 PetriNetUnfolder]: For 3060/3060 co-relation queries the response was YES. [2022-11-16 11:47:37,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1654 events. 267/1654 cut-off events. For 3060/3060 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10305 event pairs, 40 based on Foata normal form. 34/1619 useless extension candidates. Maximal degree in co-relation 3640. Up to 233 conditions per place. [2022-11-16 11:47:37,290 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 37 selfloop transitions, 29 changer transitions 0/165 dead transitions. [2022-11-16 11:47:37,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 926 flow [2022-11-16 11:47:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:47:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:47:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 774 transitions. [2022-11-16 11:47:37,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7618110236220472 [2022-11-16 11:47:37,294 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 774 transitions. [2022-11-16 11:47:37,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 774 transitions. [2022-11-16 11:47:37,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:37,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 774 transitions. [2022-11-16 11:47:37,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:37,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:37,302 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:37,302 INFO L175 Difference]: Start difference. First operand has 179 places, 154 transitions, 743 flow. Second operand 8 states and 774 transitions. [2022-11-16 11:47:37,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 926 flow [2022-11-16 11:47:37,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 849 flow, removed 19 selfloop flow, removed 8 redundant places. [2022-11-16 11:47:37,318 INFO L231 Difference]: Finished difference. Result has 177 places, 155 transitions, 788 flow [2022-11-16 11:47:37,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=177, PETRI_TRANSITIONS=155} [2022-11-16 11:47:37,320 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 57 predicate places. [2022-11-16 11:47:37,320 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 155 transitions, 788 flow [2022-11-16 11:47:37,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:37,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:37,321 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:47:37,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:47:37,322 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:37,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1616612732, now seen corresponding path program 1 times [2022-11-16 11:47:37,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:37,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924370392] [2022-11-16 11:47:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:37,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:47:37,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:37,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924370392] [2022-11-16 11:47:37,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924370392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:37,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143889162] [2022-11-16 11:47:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:37,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:37,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:37,636 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:37,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:47:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:37,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:47:37,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:47:37,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:47:38,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143889162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:38,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:38,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:47:38,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537898657] [2022-11-16 11:47:38,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:38,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:47:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:38,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:47:38,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:47:38,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 11:47:38,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 155 transitions, 788 flow. Second operand has 18 states, 18 states have (on average 101.38888888888889) internal successors, (1825), 18 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:38,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:38,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 11:47:38,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:38,929 INFO L130 PetriNetUnfolder]: 136/1387 cut-off events. [2022-11-16 11:47:38,929 INFO L131 PetriNetUnfolder]: For 2865/2865 co-relation queries the response was YES. [2022-11-16 11:47:38,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1387 events. 136/1387 cut-off events. For 2865/2865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7774 event pairs, 60 based on Foata normal form. 4/1308 useless extension candidates. Maximal degree in co-relation 3016. Up to 212 conditions per place. [2022-11-16 11:47:38,943 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 81 selfloop transitions, 35 changer transitions 3/224 dead transitions. [2022-11-16 11:47:38,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 224 transitions, 1441 flow [2022-11-16 11:47:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:47:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 11:47:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2256 transitions. [2022-11-16 11:47:38,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.807444523979957 [2022-11-16 11:47:38,951 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2256 transitions. [2022-11-16 11:47:38,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2256 transitions. [2022-11-16 11:47:38,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:38,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2256 transitions. [2022-11-16 11:47:38,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 102.54545454545455) internal successors, (2256), 22 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:38,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 127.0) internal successors, (2921), 23 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:38,969 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 127.0) internal successors, (2921), 23 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:38,969 INFO L175 Difference]: Start difference. First operand has 177 places, 155 transitions, 788 flow. Second operand 22 states and 2256 transitions. [2022-11-16 11:47:38,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 224 transitions, 1441 flow [2022-11-16 11:47:38,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 224 transitions, 1380 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-16 11:47:38,984 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 1045 flow [2022-11-16 11:47:38,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1045, PETRI_PLACES=200, PETRI_TRANSITIONS=174} [2022-11-16 11:47:38,986 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 80 predicate places. [2022-11-16 11:47:38,986 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 1045 flow [2022-11-16 11:47:38,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.38888888888889) internal successors, (1825), 18 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:38,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:38,988 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:39,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:39,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:39,198 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1696385478, now seen corresponding path program 2 times [2022-11-16 11:47:39,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:39,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561662029] [2022-11-16 11:47:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:39,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:39,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561662029] [2022-11-16 11:47:39,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561662029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:39,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237274503] [2022-11-16 11:47:39,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:47:39,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:39,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:39,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:39,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:47:39,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:47:39,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:39,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:47:39,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:39,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:40,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237274503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:40,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:40,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-16 11:47:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439689127] [2022-11-16 11:47:40,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:40,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:47:40,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:40,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:47:40,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:47:40,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-16 11:47:40,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 174 transitions, 1045 flow. Second operand has 24 states, 24 states have (on average 109.66666666666667) internal successors, (2632), 24 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:40,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:40,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-16 11:47:40,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:41,352 INFO L130 PetriNetUnfolder]: 124/2566 cut-off events. [2022-11-16 11:47:41,352 INFO L131 PetriNetUnfolder]: For 5066/5066 co-relation queries the response was YES. [2022-11-16 11:47:41,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 2566 events. 124/2566 cut-off events. For 5066/5066 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 12439 event pairs, 0 based on Foata normal form. 33/2508 useless extension candidates. Maximal degree in co-relation 5425. Up to 117 conditions per place. [2022-11-16 11:47:41,379 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 47 selfloop transitions, 32 changer transitions 1/231 dead transitions. [2022-11-16 11:47:41,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1397 flow [2022-11-16 11:47:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:47:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:47:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3510 transitions. [2022-11-16 11:47:41,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8636811023622047 [2022-11-16 11:47:41,386 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3510 transitions. [2022-11-16 11:47:41,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3510 transitions. [2022-11-16 11:47:41,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:41,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3510 transitions. [2022-11-16 11:47:41,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 109.6875) internal successors, (3510), 32 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:41,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 127.0) internal successors, (4191), 33 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:41,406 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 127.0) internal successors, (4191), 33 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:41,406 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 1045 flow. Second operand 32 states and 3510 transitions. [2022-11-16 11:47:41,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1397 flow [2022-11-16 11:47:41,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 1367 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-16 11:47:41,435 INFO L231 Difference]: Finished difference. Result has 235 places, 193 transitions, 1207 flow [2022-11-16 11:47:41,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1207, PETRI_PLACES=235, PETRI_TRANSITIONS=193} [2022-11-16 11:47:41,436 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 115 predicate places. [2022-11-16 11:47:41,436 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 193 transitions, 1207 flow [2022-11-16 11:47:41,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 109.66666666666667) internal successors, (2632), 24 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:41,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:41,438 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:41,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:41,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:47:41,644 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1626574958, now seen corresponding path program 2 times [2022-11-16 11:47:41,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:41,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885121443] [2022-11-16 11:47:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:41,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 455 proven. 532 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 11:47:42,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:42,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885121443] [2022-11-16 11:47:42,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885121443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:42,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66415188] [2022-11-16 11:47:42,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:47:42,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:42,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:42,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:42,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:47:42,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:47:42,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:42,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:47:42,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 80 proven. 877 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:47:42,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 80 proven. 877 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:47:43,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66415188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:43,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:43,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-16 11:47:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517187512] [2022-11-16 11:47:43,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:47:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:47:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:47:43,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 11:47:43,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 193 transitions, 1207 flow. Second operand has 34 states, 34 states have (on average 101.5) internal successors, (3451), 34 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:43,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:43,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 11:47:43,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:45,812 INFO L130 PetriNetUnfolder]: 383/3751 cut-off events. [2022-11-16 11:47:45,812 INFO L131 PetriNetUnfolder]: For 9810/9810 co-relation queries the response was YES. [2022-11-16 11:47:45,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8920 conditions, 3751 events. 383/3751 cut-off events. For 9810/9810 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 23399 event pairs, 172 based on Foata normal form. 8/3537 useless extension candidates. Maximal degree in co-relation 8833. Up to 625 conditions per place. [2022-11-16 11:47:45,856 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 145 selfloop transitions, 67 changer transitions 3/339 dead transitions. [2022-11-16 11:47:45,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 339 transitions, 2583 flow [2022-11-16 11:47:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 11:47:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-16 11:47:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4708 transitions. [2022-11-16 11:47:45,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8058883943854844 [2022-11-16 11:47:45,864 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4708 transitions. [2022-11-16 11:47:45,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4708 transitions. [2022-11-16 11:47:45,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:45,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4708 transitions. [2022-11-16 11:47:45,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 102.34782608695652) internal successors, (4708), 46 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:45,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:45,893 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:45,894 INFO L175 Difference]: Start difference. First operand has 235 places, 193 transitions, 1207 flow. Second operand 46 states and 4708 transitions. [2022-11-16 11:47:45,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 339 transitions, 2583 flow [2022-11-16 11:47:45,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 339 transitions, 2545 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-16 11:47:45,943 INFO L231 Difference]: Finished difference. Result has 278 places, 226 transitions, 1770 flow [2022-11-16 11:47:45,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1770, PETRI_PLACES=278, PETRI_TRANSITIONS=226} [2022-11-16 11:47:45,944 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 158 predicate places. [2022-11-16 11:47:45,944 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 226 transitions, 1770 flow [2022-11-16 11:47:45,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 101.5) internal successors, (3451), 34 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:45,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:45,946 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:45,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:46,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:46,152 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:46,153 INFO L85 PathProgramCache]: Analyzing trace with hash 134675822, now seen corresponding path program 1 times [2022-11-16 11:47:46,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:46,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304589061] [2022-11-16 11:47:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:46,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 74 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2022-11-16 11:47:46,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:46,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304589061] [2022-11-16 11:47:46,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304589061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:46,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355797781] [2022-11-16 11:47:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:46,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:46,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:46,620 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:46,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:47:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:47:46,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 67 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-16 11:47:47,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 67 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-16 11:47:47,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355797781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:47,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:47,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2022-11-16 11:47:47,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441513333] [2022-11-16 11:47:47,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:47:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:47,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:47:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:47:47,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-16 11:47:47,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 226 transitions, 1770 flow. Second operand has 16 states, 16 states have (on average 96.0625) internal successors, (1537), 16 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:47,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:47,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-16 11:47:47,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:51,240 INFO L130 PetriNetUnfolder]: 1527/9547 cut-off events. [2022-11-16 11:47:51,240 INFO L131 PetriNetUnfolder]: For 29181/29181 co-relation queries the response was YES. [2022-11-16 11:47:51,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23775 conditions, 9547 events. 1527/9547 cut-off events. For 29181/29181 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 81518 event pairs, 445 based on Foata normal form. 81/9023 useless extension candidates. Maximal degree in co-relation 23677. Up to 763 conditions per place. [2022-11-16 11:47:51,402 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 147 selfloop transitions, 73 changer transitions 0/338 dead transitions. [2022-11-16 11:47:51,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 338 transitions, 2932 flow [2022-11-16 11:47:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:47:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 11:47:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2434 transitions. [2022-11-16 11:47:51,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7666141732283465 [2022-11-16 11:47:51,406 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2434 transitions. [2022-11-16 11:47:51,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2434 transitions. [2022-11-16 11:47:51,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:51,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2434 transitions. [2022-11-16 11:47:51,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 97.36) internal successors, (2434), 25 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:51,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 127.0) internal successors, (3302), 26 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:51,418 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 127.0) internal successors, (3302), 26 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:51,418 INFO L175 Difference]: Start difference. First operand has 278 places, 226 transitions, 1770 flow. Second operand 25 states and 2434 transitions. [2022-11-16 11:47:51,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 338 transitions, 2932 flow [2022-11-16 11:47:51,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 338 transitions, 2813 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-11-16 11:47:51,540 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 2278 flow [2022-11-16 11:47:51,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2278, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-11-16 11:47:51,542 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 171 predicate places. [2022-11-16 11:47:51,542 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 2278 flow [2022-11-16 11:47:51,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 96.0625) internal successors, (1537), 16 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:51,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:51,543 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:51,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:51,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:47:51,749 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:47:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1366271196, now seen corresponding path program 2 times [2022-11-16 11:47:51,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:51,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470435361] [2022-11-16 11:47:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:51,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 506 proven. 163 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-16 11:47:52,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:52,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470435361] [2022-11-16 11:47:52,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470435361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:52,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803401792] [2022-11-16 11:47:52,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:47:52,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:52,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:52,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:52,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:47:52,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:47:52,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:52,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:47:52,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 170 proven. 421 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-16 11:47:53,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 170 proven. 421 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-16 11:47:53,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803401792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:53,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:53,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-16 11:47:53,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191952663] [2022-11-16 11:47:53,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:53,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:47:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:47:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:47:53,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-16 11:47:53,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 2278 flow. Second operand has 24 states, 24 states have (on average 96.0) internal successors, (2304), 24 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:53,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:53,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-16 11:47:53,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:59,919 INFO L130 PetriNetUnfolder]: 2447/15886 cut-off events. [2022-11-16 11:47:59,919 INFO L131 PetriNetUnfolder]: For 55876/55876 co-relation queries the response was YES. [2022-11-16 11:48:00,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40960 conditions, 15886 events. 2447/15886 cut-off events. For 55876/55876 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 157807 event pairs, 506 based on Foata normal form. 72/14945 useless extension candidates. Maximal degree in co-relation 40854. Up to 1260 conditions per place. [2022-11-16 11:48:00,117 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 142 selfloop transitions, 155 changer transitions 1/416 dead transitions. [2022-11-16 11:48:00,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 416 transitions, 4082 flow [2022-11-16 11:48:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:48:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:48:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3477 transitions. [2022-11-16 11:48:00,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.760498687664042 [2022-11-16 11:48:00,128 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3477 transitions. [2022-11-16 11:48:00,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3477 transitions. [2022-11-16 11:48:00,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:00,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3477 transitions. [2022-11-16 11:48:00,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 96.58333333333333) internal successors, (3477), 36 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 127.0) internal successors, (4699), 37 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,149 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 127.0) internal successors, (4699), 37 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,151 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 2278 flow. Second operand 36 states and 3477 transitions. [2022-11-16 11:48:00,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 416 transitions, 4082 flow [2022-11-16 11:48:00,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 416 transitions, 3991 flow, removed 41 selfloop flow, removed 4 redundant places. [2022-11-16 11:48:00,402 INFO L231 Difference]: Finished difference. Result has 327 places, 306 transitions, 3284 flow [2022-11-16 11:48:00,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3284, PETRI_PLACES=327, PETRI_TRANSITIONS=306} [2022-11-16 11:48:00,404 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 207 predicate places. [2022-11-16 11:48:00,404 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 306 transitions, 3284 flow [2022-11-16 11:48:00,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 96.0) internal successors, (2304), 24 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:00,405 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:00,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:00,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:48:00,613 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:48:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1227933092, now seen corresponding path program 3 times [2022-11-16 11:48:00,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:00,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208423366] [2022-11-16 11:48:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:00,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 508 proven. 371 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-16 11:48:01,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:01,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208423366] [2022-11-16 11:48:01,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208423366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:01,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912352124] [2022-11-16 11:48:01,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:48:01,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:01,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:01,362 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:01,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:48:01,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 11:48:01,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:01,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:48:01,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 80 proven. 752 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-16 11:48:02,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 80 proven. 752 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-16 11:48:02,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912352124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:02,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:02,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 28 [2022-11-16 11:48:02,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043568899] [2022-11-16 11:48:02,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:02,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:48:02,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:02,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:48:02,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:48:02,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-16 11:48:02,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 306 transitions, 3284 flow. Second operand has 28 states, 28 states have (on average 95.92857142857143) internal successors, (2686), 28 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:02,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:02,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-16 11:48:02,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:11,249 INFO L130 PetriNetUnfolder]: 3022/19333 cut-off events. [2022-11-16 11:48:11,249 INFO L131 PetriNetUnfolder]: For 80168/80168 co-relation queries the response was YES. [2022-11-16 11:48:11,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52514 conditions, 19333 events. 3022/19333 cut-off events. For 80168/80168 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 205141 event pairs, 833 based on Foata normal form. 54/18111 useless extension candidates. Maximal degree in co-relation 52403. Up to 1560 conditions per place. [2022-11-16 11:48:11,562 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 237 selfloop transitions, 166 changer transitions 0/521 dead transitions. [2022-11-16 11:48:11,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 521 transitions, 5747 flow [2022-11-16 11:48:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 11:48:11,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-16 11:48:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4472 transitions. [2022-11-16 11:48:11,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.765491270112975 [2022-11-16 11:48:11,570 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4472 transitions. [2022-11-16 11:48:11,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4472 transitions. [2022-11-16 11:48:11,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:11,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4472 transitions. [2022-11-16 11:48:11,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 97.21739130434783) internal successors, (4472), 46 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:11,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:11,590 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:11,590 INFO L175 Difference]: Start difference. First operand has 327 places, 306 transitions, 3284 flow. Second operand 46 states and 4472 transitions. [2022-11-16 11:48:11,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 521 transitions, 5747 flow [2022-11-16 11:48:11,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 521 transitions, 5669 flow, removed 25 selfloop flow, removed 11 redundant places. [2022-11-16 11:48:11,975 INFO L231 Difference]: Finished difference. Result has 370 places, 343 transitions, 4321 flow [2022-11-16 11:48:11,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4321, PETRI_PLACES=370, PETRI_TRANSITIONS=343} [2022-11-16 11:48:11,976 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 250 predicate places. [2022-11-16 11:48:11,977 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 343 transitions, 4321 flow [2022-11-16 11:48:11,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 95.92857142857143) internal successors, (2686), 28 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:11,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:11,978 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:11,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:12,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:48:12,186 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:48:12,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1951333594, now seen corresponding path program 3 times [2022-11-16 11:48:12,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:12,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906496173] [2022-11-16 11:48:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:12,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:13,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:13,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906496173] [2022-11-16 11:48:13,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906496173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:13,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893411736] [2022-11-16 11:48:13,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:48:13,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:13,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:13,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:13,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:48:13,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 11:48:13,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:13,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:48:13,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:13,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:14,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893411736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:14,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:14,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-11-16 11:48:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487333301] [2022-11-16 11:48:14,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 11:48:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 11:48:14,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:48:14,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-16 11:48:14,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 343 transitions, 4321 flow. Second operand has 48 states, 48 states have (on average 109.83333333333333) internal successors, (5272), 48 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:14,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:14,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-16 11:48:14,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:31,389 INFO L130 PetriNetUnfolder]: 775/23917 cut-off events. [2022-11-16 11:48:31,389 INFO L131 PetriNetUnfolder]: For 123448/123448 co-relation queries the response was YES. [2022-11-16 11:48:31,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64777 conditions, 23917 events. 775/23917 cut-off events. For 123448/123448 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 204670 event pairs, 0 based on Foata normal form. 283/23237 useless extension candidates. Maximal degree in co-relation 64659. Up to 1159 conditions per place. [2022-11-16 11:48:31,729 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 94 selfloop transitions, 68 changer transitions 2/465 dead transitions. [2022-11-16 11:48:31,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 465 transitions, 5140 flow [2022-11-16 11:48:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-16 11:48:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-11-16 11:48:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 7452 transitions. [2022-11-16 11:48:31,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8628994905048634 [2022-11-16 11:48:31,740 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 7452 transitions. [2022-11-16 11:48:31,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 7452 transitions. [2022-11-16 11:48:31,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:31,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 7452 transitions. [2022-11-16 11:48:31,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 109.58823529411765) internal successors, (7452), 68 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:31,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 127.0) internal successors, (8763), 69 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:31,771 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 127.0) internal successors, (8763), 69 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:31,771 INFO L175 Difference]: Start difference. First operand has 370 places, 343 transitions, 4321 flow. Second operand 68 states and 7452 transitions. [2022-11-16 11:48:31,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 465 transitions, 5140 flow [2022-11-16 11:48:32,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 465 transitions, 5031 flow, removed 26 selfloop flow, removed 14 redundant places. [2022-11-16 11:48:32,398 INFO L231 Difference]: Finished difference. Result has 436 places, 380 transitions, 4629 flow [2022-11-16 11:48:32,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=4212, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=4629, PETRI_PLACES=436, PETRI_TRANSITIONS=380} [2022-11-16 11:48:32,399 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 316 predicate places. [2022-11-16 11:48:32,399 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 380 transitions, 4629 flow [2022-11-16 11:48:32,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 109.83333333333333) internal successors, (5272), 48 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:32,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:32,401 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 15, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:32,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 11:48:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:48:32,608 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:48:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash 146017216, now seen corresponding path program 4 times [2022-11-16 11:48:32,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:32,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083858321] [2022-11-16 11:48:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2178 proven. 677 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2022-11-16 11:48:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:33,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083858321] [2022-11-16 11:48:33,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083858321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:33,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789284673] [2022-11-16 11:48:33,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:48:33,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:33,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:33,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b595c28-7d53-43a7-888e-41d890792a47/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:48:34,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:48:34,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:34,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:48:34,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2269 proven. 799 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-16 11:48:34,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2269 proven. 799 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-16 11:48:35,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789284673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:35,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:35,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2022-11-16 11:48:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043968146] [2022-11-16 11:48:35,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:35,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 11:48:35,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 11:48:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 11:48:35,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-16 11:48:35,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 380 transitions, 4629 flow. Second operand has 36 states, 36 states have (on average 95.80555555555556) internal successors, (3449), 36 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:35,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:35,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-16 11:48:35,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand