./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro --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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- 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-8393723 [2022-11-18 19:31:20,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:20,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:20,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:20,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:20,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:20,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:20,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:20,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:20,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:20,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:20,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:20,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:20,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:20,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:20,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:20,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:20,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:20,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:20,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:20,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:20,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:20,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:20,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:20,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:20,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:20,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:20,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:20,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:20,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:20,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:20,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:20,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:20,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:20,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:20,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:20,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:20,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:20,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:20,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:20,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:20,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:31:20,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:20,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:20,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:20,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:20,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:31:20,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:31:20,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:20,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:20,795 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:20,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:20,797 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:31:20,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:31:20,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:20,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:31:20,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:20,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:31:20,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:31:20,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:31:20,799 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:31:20,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:31:20,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:20,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:20,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:31:20,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:20,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:20,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:31:20,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:20,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:20,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:31:20,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:31:20,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:20,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:31:20,803 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:31:20,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:31:20,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:31:20,804 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_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2022-11-18 19:31:21,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:21,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:21,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:21,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:21,212 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:21,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2022-11-18 19:31:21,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/data/68a985939/27649f1a0cd9461cb1ba41cb7d787ee1/FLAG9b8940c26 [2022-11-18 19:31:21,961 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:21,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2022-11-18 19:31:21,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/data/68a985939/27649f1a0cd9461cb1ba41cb7d787ee1/FLAG9b8940c26 [2022-11-18 19:31:22,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/data/68a985939/27649f1a0cd9461cb1ba41cb7d787ee1 [2022-11-18 19:31:22,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:22,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:22,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:22,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:22,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:22,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675bee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22, skipping insertion in model container [2022-11-18 19:31:22,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:22,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:22,687 WARN L234 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_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i[30176,30189] [2022-11-18 19:31:22,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:22,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:22,753 WARN L234 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_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i[30176,30189] [2022-11-18 19:31:22,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:22,808 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:22,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22 WrapperNode [2022-11-18 19:31:22,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:22,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:22,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:22,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:22,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,866 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2022-11-18 19:31:22,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:22,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:22,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:22,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:22,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:22,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:22,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:22,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:22,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:22,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:22,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:22,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:31:23,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:31:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:31:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:31:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:31:23,011 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:31:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:31:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:31:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:23,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:23,013 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:31:23,198 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:23,201 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:23,540 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:23,548 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:23,548 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 19:31:23,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:23 BoogieIcfgContainer [2022-11-18 19:31:23,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:23,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:31:23,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:31:23,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:31:23,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:22" (1/3) ... [2022-11-18 19:31:23,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581abc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:23, skipping insertion in model container [2022-11-18 19:31:23,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (2/3) ... [2022-11-18 19:31:23,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581abc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:23, skipping insertion in model container [2022-11-18 19:31:23,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:23" (3/3) ... [2022-11-18 19:31:23,561 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2022-11-18 19:31:23,569 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:31:23,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:31:23,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:31:23,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:31:23,636 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:31:23,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 268 flow [2022-11-18 19:31:23,850 INFO L130 PetriNetUnfolder]: 17/170 cut-off events. [2022-11-18 19:31:23,852 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:31:23,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 170 events. 17/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 426 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-11-18 19:31:23,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 130 transitions, 268 flow [2022-11-18 19:31:23,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 127 transitions, 262 flow [2022-11-18 19:31:23,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:23,893 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;@7926293a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:23,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 19:31:23,912 INFO L130 PetriNetUnfolder]: 1/52 cut-off events. [2022-11-18 19:31:23,912 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:31:23,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:23,913 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:23,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:31:23,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash 807803545, now seen corresponding path program 1 times [2022-11-18 19:31:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:23,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416085868] [2022-11-18 19:31:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:23,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:24,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416085868] [2022-11-18 19:31:24,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416085868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:24,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:24,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:24,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602043351] [2022-11-18 19:31:24,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:24,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:24,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:24,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:24,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 130 [2022-11-18 19:31:24,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:24,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:24,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 130 [2022-11-18 19:31:24,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:24,619 INFO L130 PetriNetUnfolder]: 0/117 cut-off events. [2022-11-18 19:31:24,619 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-18 19:31:24,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 117 events. 0/117 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 37/146 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 19:31:24,622 INFO L137 encePairwiseOnDemand]: 112/130 looper letters, 10 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2022-11-18 19:31:24,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 115 transitions, 266 flow [2022-11-18 19:31:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2022-11-18 19:31:24,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8723076923076923 [2022-11-18 19:31:24,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2022-11-18 19:31:24,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2022-11-18 19:31:24,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:24,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2022-11-18 19:31:24,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:24,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:24,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:24,685 INFO L175 Difference]: Start difference. First operand has 119 places, 127 transitions, 262 flow. Second operand 5 states and 567 transitions. [2022-11-18 19:31:24,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 115 transitions, 266 flow [2022-11-18 19:31:24,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 115 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:31:24,696 INFO L231 Difference]: Finished difference. Result has 121 places, 113 transitions, 246 flow [2022-11-18 19:31:24,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=121, PETRI_TRANSITIONS=113} [2022-11-18 19:31:24,703 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 2 predicate places. [2022-11-18 19:31:24,704 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 113 transitions, 246 flow [2022-11-18 19:31:24,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:24,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:24,705 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] [2022-11-18 19:31:24,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:31:24,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:31:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash 271965116, now seen corresponding path program 1 times [2022-11-18 19:31:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:24,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931950774] [2022-11-18 19:31:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:24,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:24,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931950774] [2022-11-18 19:31:24,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931950774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:24,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:24,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:24,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106060153] [2022-11-18 19:31:24,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:24,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:24,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:24,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 130 [2022-11-18 19:31:24,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 113 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:24,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:24,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 130 [2022-11-18 19:31:24,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:25,071 INFO L130 PetriNetUnfolder]: 7/209 cut-off events. [2022-11-18 19:31:25,071 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 19:31:25,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 209 events. 7/209 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 597 event pairs, 4 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 195. Up to 11 conditions per place. [2022-11-18 19:31:25,074 INFO L137 encePairwiseOnDemand]: 124/130 looper letters, 10 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2022-11-18 19:31:25,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 276 flow [2022-11-18 19:31:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-11-18 19:31:25,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8323076923076923 [2022-11-18 19:31:25,076 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-11-18 19:31:25,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-11-18 19:31:25,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:25,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-11-18 19:31:25,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,081 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,081 INFO L175 Difference]: Start difference. First operand has 121 places, 113 transitions, 246 flow. Second operand 5 states and 541 transitions. [2022-11-18 19:31:25,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 276 flow [2022-11-18 19:31:25,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 114 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:31:25,085 INFO L231 Difference]: Finished difference. Result has 119 places, 111 transitions, 242 flow [2022-11-18 19:31:25,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=119, PETRI_TRANSITIONS=111} [2022-11-18 19:31:25,087 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2022-11-18 19:31:25,087 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 111 transitions, 242 flow [2022-11-18 19:31:25,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:25,088 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:25,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:31:25,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:31:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:25,089 INFO L85 PathProgramCache]: Analyzing trace with hash -887905153, now seen corresponding path program 1 times [2022-11-18 19:31:25,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:25,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648766947] [2022-11-18 19:31:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:25,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:25,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:25,185 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:31:25,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 19:31:25,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 19:31:25,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 19:31:25,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 19:31:25,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 19:31:25,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 19:31:25,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 19:31:25,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 19:31:25,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 19:31:25,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 19:31:25,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 19:31:25,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 19:31:25,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 19:31:25,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:31:25,192 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 19:31:25,195 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:31:25,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:31:25,256 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:31:25,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 173 transitions, 364 flow [2022-11-18 19:31:25,325 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2022-11-18 19:31:25,325 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 19:31:25,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 911 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2022-11-18 19:31:25,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 173 transitions, 364 flow [2022-11-18 19:31:25,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 173 transitions, 364 flow [2022-11-18 19:31:25,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:25,342 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;@7926293a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:25,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 19:31:25,351 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2022-11-18 19:31:25,352 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:31:25,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:25,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:25,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:31:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash 821985570, now seen corresponding path program 1 times [2022-11-18 19:31:25,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:25,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935039876] [2022-11-18 19:31:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:25,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:25,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935039876] [2022-11-18 19:31:25,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935039876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:25,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:25,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512228529] [2022-11-18 19:31:25,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:25,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:25,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2022-11-18 19:31:25,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 173 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:25,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2022-11-18 19:31:25,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:25,718 INFO L130 PetriNetUnfolder]: 2/236 cut-off events. [2022-11-18 19:31:25,718 INFO L131 PetriNetUnfolder]: For 34/104 co-relation queries the response was YES. [2022-11-18 19:31:25,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 236 events. 2/236 cut-off events. For 34/104 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 576 event pairs, 0 based on Foata normal form. 106/318 useless extension candidates. Maximal degree in co-relation 156. Up to 21 conditions per place. [2022-11-18 19:31:25,721 INFO L137 encePairwiseOnDemand]: 149/173 looper letters, 19 selfloop transitions, 4 changer transitions 0/162 dead transitions. [2022-11-18 19:31:25,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 162 transitions, 388 flow [2022-11-18 19:31:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 757 transitions. [2022-11-18 19:31:25,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8751445086705202 [2022-11-18 19:31:25,724 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 757 transitions. [2022-11-18 19:31:25,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 757 transitions. [2022-11-18 19:31:25,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:25,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 757 transitions. [2022-11-18 19:31:25,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,732 INFO L175 Difference]: Start difference. First operand has 159 places, 173 transitions, 364 flow. Second operand 5 states and 757 transitions. [2022-11-18 19:31:25,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 162 transitions, 388 flow [2022-11-18 19:31:25,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 162 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:31:25,741 INFO L231 Difference]: Finished difference. Result has 165 places, 158 transitions, 360 flow [2022-11-18 19:31:25,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=165, PETRI_TRANSITIONS=158} [2022-11-18 19:31:25,744 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 6 predicate places. [2022-11-18 19:31:25,745 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 158 transitions, 360 flow [2022-11-18 19:31:25,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:25,749 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] [2022-11-18 19:31:25,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:31:25,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:31:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 744705248, now seen corresponding path program 1 times [2022-11-18 19:31:25,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465660442] [2022-11-18 19:31:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:25,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:25,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:25,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465660442] [2022-11-18 19:31:25,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465660442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:25,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:25,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224648118] [2022-11-18 19:31:25,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:25,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:25,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:25,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 173 [2022-11-18 19:31:25,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 158 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:25,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:25,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 173 [2022-11-18 19:31:25,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:26,297 INFO L130 PetriNetUnfolder]: 170/1205 cut-off events. [2022-11-18 19:31:26,297 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-11-18 19:31:26,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 1205 events. 170/1205 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8691 event pairs, 76 based on Foata normal form. 0/1055 useless extension candidates. Maximal degree in co-relation 1548. Up to 207 conditions per place. [2022-11-18 19:31:26,310 INFO L137 encePairwiseOnDemand]: 166/173 looper letters, 36 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2022-11-18 19:31:26,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 181 transitions, 508 flow [2022-11-18 19:31:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 726 transitions. [2022-11-18 19:31:26,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8393063583815029 [2022-11-18 19:31:26,314 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 726 transitions. [2022-11-18 19:31:26,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 726 transitions. [2022-11-18 19:31:26,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:26,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 726 transitions. [2022-11-18 19:31:26,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,320 INFO L175 Difference]: Start difference. First operand has 165 places, 158 transitions, 360 flow. Second operand 5 states and 726 transitions. [2022-11-18 19:31:26,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 181 transitions, 508 flow [2022-11-18 19:31:26,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 181 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:31:26,330 INFO L231 Difference]: Finished difference. Result has 171 places, 163 transitions, 407 flow [2022-11-18 19:31:26,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2022-11-18 19:31:26,332 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 12 predicate places. [2022-11-18 19:31:26,332 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 407 flow [2022-11-18 19:31:26,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:26,333 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:31:26,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:31:26,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1389149599, now seen corresponding path program 1 times [2022-11-18 19:31:26,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:26,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824312630] [2022-11-18 19:31:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:26,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:31:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:26,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824312630] [2022-11-18 19:31:26,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824312630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:26,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:26,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:26,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797701637] [2022-11-18 19:31:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:26,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:26,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:26,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:26,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2022-11-18 19:31:26,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:26,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2022-11-18 19:31:26,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:26,572 INFO L130 PetriNetUnfolder]: 5/368 cut-off events. [2022-11-18 19:31:26,572 INFO L131 PetriNetUnfolder]: For 74/181 co-relation queries the response was YES. [2022-11-18 19:31:26,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 368 events. 5/368 cut-off events. For 74/181 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1252 event pairs, 0 based on Foata normal form. 16/350 useless extension candidates. Maximal degree in co-relation 313. Up to 16 conditions per place. [2022-11-18 19:31:26,576 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 11 selfloop transitions, 8 changer transitions 0/163 dead transitions. [2022-11-18 19:31:26,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 163 transitions, 443 flow [2022-11-18 19:31:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 712 transitions. [2022-11-18 19:31:26,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823121387283237 [2022-11-18 19:31:26,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 712 transitions. [2022-11-18 19:31:26,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 712 transitions. [2022-11-18 19:31:26,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:26,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 712 transitions. [2022-11-18 19:31:26,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,587 INFO L175 Difference]: Start difference. First operand has 171 places, 163 transitions, 407 flow. Second operand 5 states and 712 transitions. [2022-11-18 19:31:26,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 163 transitions, 443 flow [2022-11-18 19:31:26,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 163 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:31:26,594 INFO L231 Difference]: Finished difference. Result has 174 places, 163 transitions, 424 flow [2022-11-18 19:31:26,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=174, PETRI_TRANSITIONS=163} [2022-11-18 19:31:26,598 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-11-18 19:31:26,598 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 163 transitions, 424 flow [2022-11-18 19:31:26,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:26,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:26,599 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:26,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:31:26,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:31:26,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:26,601 INFO L85 PathProgramCache]: Analyzing trace with hash -113964098, now seen corresponding path program 1 times [2022-11-18 19:31:26,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:26,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683432547] [2022-11-18 19:31:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:26,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:26,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683432547] [2022-11-18 19:31:26,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683432547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:26,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059657216] [2022-11-18 19:31:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:26,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:26,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:26,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:26,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:31:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:26,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:31:26,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:27,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:27,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059657216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:27,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:27,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:31:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668615090] [2022-11-18 19:31:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:27,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:27,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:27,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:27,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:31:27,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2022-11-18 19:31:27,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 163 transitions, 424 flow. Second operand has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:27,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2022-11-18 19:31:27,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:27,266 INFO L130 PetriNetUnfolder]: 5/367 cut-off events. [2022-11-18 19:31:27,267 INFO L131 PetriNetUnfolder]: For 82/181 co-relation queries the response was YES. [2022-11-18 19:31:27,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 367 events. 5/367 cut-off events. For 82/181 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1249 event pairs, 0 based on Foata normal form. 9/342 useless extension candidates. Maximal degree in co-relation 314. Up to 19 conditions per place. [2022-11-18 19:31:27,270 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 15 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2022-11-18 19:31:27,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 165 transitions, 468 flow [2022-11-18 19:31:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:31:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:31:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 995 transitions. [2022-11-18 19:31:27,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216350123864574 [2022-11-18 19:31:27,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 995 transitions. [2022-11-18 19:31:27,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 995 transitions. [2022-11-18 19:31:27,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:27,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 995 transitions. [2022-11-18 19:31:27,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 142.14285714285714) internal successors, (995), 7 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,283 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,283 INFO L175 Difference]: Start difference. First operand has 174 places, 163 transitions, 424 flow. Second operand 7 states and 995 transitions. [2022-11-18 19:31:27,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 165 transitions, 468 flow [2022-11-18 19:31:27,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 165 transitions, 456 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:31:27,289 INFO L231 Difference]: Finished difference. Result has 176 places, 162 transitions, 420 flow [2022-11-18 19:31:27,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=420, PETRI_PLACES=176, PETRI_TRANSITIONS=162} [2022-11-18 19:31:27,291 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2022-11-18 19:31:27,291 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 162 transitions, 420 flow [2022-11-18 19:31:27,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:27,292 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] [2022-11-18 19:31:27,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:31:27,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:27,498 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:31:27,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:27,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1157822290, now seen corresponding path program 1 times [2022-11-18 19:31:27,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:27,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621808816] [2022-11-18 19:31:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:27,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:27,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:27,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621808816] [2022-11-18 19:31:27,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621808816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:27,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:27,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:31:27,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784287701] [2022-11-18 19:31:27,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:27,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:27,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:27,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:27,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 173 [2022-11-18 19:31:27,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 162 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:27,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 173 [2022-11-18 19:31:27,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:28,174 INFO L130 PetriNetUnfolder]: 342/1924 cut-off events. [2022-11-18 19:31:28,175 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2022-11-18 19:31:28,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 1924 events. 342/1924 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 16101 event pairs, 71 based on Foata normal form. 0/1702 useless extension candidates. Maximal degree in co-relation 2080. Up to 237 conditions per place. [2022-11-18 19:31:28,197 INFO L137 encePairwiseOnDemand]: 162/173 looper letters, 60 selfloop transitions, 19 changer transitions 0/212 dead transitions. [2022-11-18 19:31:28,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 212 transitions, 728 flow [2022-11-18 19:31:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:31:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:31:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1260 transitions. [2022-11-18 19:31:28,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8092485549132948 [2022-11-18 19:31:28,202 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1260 transitions. [2022-11-18 19:31:28,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1260 transitions. [2022-11-18 19:31:28,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:28,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1260 transitions. [2022-11-18 19:31:28,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.0) internal successors, (1260), 9 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,218 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,218 INFO L175 Difference]: Start difference. First operand has 176 places, 162 transitions, 420 flow. Second operand 9 states and 1260 transitions. [2022-11-18 19:31:28,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 212 transitions, 728 flow [2022-11-18 19:31:28,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 212 transitions, 717 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 19:31:28,226 INFO L231 Difference]: Finished difference. Result has 185 places, 174 transitions, 535 flow [2022-11-18 19:31:28,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=535, PETRI_PLACES=185, PETRI_TRANSITIONS=174} [2022-11-18 19:31:28,227 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 26 predicate places. [2022-11-18 19:31:28,227 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 174 transitions, 535 flow [2022-11-18 19:31:28,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:28,228 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] [2022-11-18 19:31:28,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:31:28,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:31:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1532752072, now seen corresponding path program 1 times [2022-11-18 19:31:28,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:28,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883015307] [2022-11-18 19:31:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:28,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:28,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:28,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883015307] [2022-11-18 19:31:28,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883015307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:28,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:28,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:31:28,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384750010] [2022-11-18 19:31:28,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:28,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:28,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:28,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:28,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:28,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 173 [2022-11-18 19:31:28,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 174 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:28,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 173 [2022-11-18 19:31:28,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:28,909 INFO L130 PetriNetUnfolder]: 318/1694 cut-off events. [2022-11-18 19:31:28,909 INFO L131 PetriNetUnfolder]: For 959/990 co-relation queries the response was YES. [2022-11-18 19:31:28,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1694 events. 318/1694 cut-off events. For 959/990 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 13654 event pairs, 77 based on Foata normal form. 42/1578 useless extension candidates. Maximal degree in co-relation 2216. Up to 272 conditions per place. [2022-11-18 19:31:28,928 INFO L137 encePairwiseOnDemand]: 162/173 looper letters, 65 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2022-11-18 19:31:28,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 217 transitions, 870 flow [2022-11-18 19:31:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:31:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:31:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1262 transitions. [2022-11-18 19:31:28,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105330764290302 [2022-11-18 19:31:28,932 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1262 transitions. [2022-11-18 19:31:28,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1262 transitions. [2022-11-18 19:31:28,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:28,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1262 transitions. [2022-11-18 19:31:28,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.22222222222223) internal successors, (1262), 9 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,942 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,942 INFO L175 Difference]: Start difference. First operand has 185 places, 174 transitions, 535 flow. Second operand 9 states and 1262 transitions. [2022-11-18 19:31:28,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 217 transitions, 870 flow [2022-11-18 19:31:28,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 217 transitions, 829 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-18 19:31:28,954 INFO L231 Difference]: Finished difference. Result has 191 places, 178 transitions, 582 flow [2022-11-18 19:31:28,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=582, PETRI_PLACES=191, PETRI_TRANSITIONS=178} [2022-11-18 19:31:28,956 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 32 predicate places. [2022-11-18 19:31:28,956 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 178 transitions, 582 flow [2022-11-18 19:31:28,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:28,957 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:28,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:31:28,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:31:28,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1132306102, now seen corresponding path program 1 times [2022-11-18 19:31:28,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:28,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111394550] [2022-11-18 19:31:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:28,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:31:29,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:29,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111394550] [2022-11-18 19:31:29,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111394550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:29,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:29,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:29,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073757643] [2022-11-18 19:31:29,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:29,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:29,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:29,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:29,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:29,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 173 [2022-11-18 19:31:29,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 178 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:29,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 173 [2022-11-18 19:31:29,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:29,486 INFO L130 PetriNetUnfolder]: 272/1879 cut-off events. [2022-11-18 19:31:29,486 INFO L131 PetriNetUnfolder]: For 1180/1225 co-relation queries the response was YES. [2022-11-18 19:31:29,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 1879 events. 272/1879 cut-off events. For 1180/1225 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15919 event pairs, 131 based on Foata normal form. 23/1745 useless extension candidates. Maximal degree in co-relation 2942. Up to 362 conditions per place. [2022-11-18 19:31:29,506 INFO L137 encePairwiseOnDemand]: 166/173 looper letters, 55 selfloop transitions, 7 changer transitions 0/204 dead transitions. [2022-11-18 19:31:29,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 204 transitions, 844 flow [2022-11-18 19:31:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 724 transitions. [2022-11-18 19:31:29,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8369942196531792 [2022-11-18 19:31:29,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 724 transitions. [2022-11-18 19:31:29,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 724 transitions. [2022-11-18 19:31:29,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:29,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 724 transitions. [2022-11-18 19:31:29,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.8) internal successors, (724), 5 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,541 INFO L175 Difference]: Start difference. First operand has 191 places, 178 transitions, 582 flow. Second operand 5 states and 724 transitions. [2022-11-18 19:31:29,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 204 transitions, 844 flow [2022-11-18 19:31:29,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 204 transitions, 816 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 19:31:29,550 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 612 flow [2022-11-18 19:31:29,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2022-11-18 19:31:29,551 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 35 predicate places. [2022-11-18 19:31:29,551 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 612 flow [2022-11-18 19:31:29,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:29,552 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:29,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:31:29,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:31:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1364159216, now seen corresponding path program 1 times [2022-11-18 19:31:29,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:29,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678461524] [2022-11-18 19:31:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:29,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:29,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:29,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:29,585 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:31:29,585 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 19:31:29,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 19:31:29,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 19:31:29,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 19:31:29,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 19:31:29,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 19:31:29,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 19:31:29,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 19:31:29,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 19:31:29,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 19:31:29,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 19:31:29,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 19:31:29,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 19:31:29,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 19:31:29,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 19:31:29,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 19:31:29,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 19:31:29,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:31:29,588 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:29,589 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:31:29,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 19:31:29,614 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:31:29,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2022-11-18 19:31:29,677 INFO L130 PetriNetUnfolder]: 50/451 cut-off events. [2022-11-18 19:31:29,677 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 19:31:29,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 451 events. 50/451 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1615 event pairs, 1 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2022-11-18 19:31:29,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 216 transitions, 462 flow [2022-11-18 19:31:29,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 216 transitions, 462 flow [2022-11-18 19:31:29,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:29,687 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;@7926293a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:29,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 19:31:29,692 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2022-11-18 19:31:29,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:31:29,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:29,692 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:29,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1947469259, now seen corresponding path program 1 times [2022-11-18 19:31:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:29,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247191970] [2022-11-18 19:31:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:29,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:29,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247191970] [2022-11-18 19:31:29,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247191970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:29,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:29,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:29,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149223608] [2022-11-18 19:31:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:29,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:29,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:29,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-18 19:31:29,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 216 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:29,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-18 19:31:29,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:29,858 INFO L130 PetriNetUnfolder]: 7/382 cut-off events. [2022-11-18 19:31:29,858 INFO L131 PetriNetUnfolder]: For 54/127 co-relation queries the response was YES. [2022-11-18 19:31:29,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 382 events. 7/382 cut-off events. For 54/127 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1243 event pairs, 1 based on Foata normal form. 270/608 useless extension candidates. Maximal degree in co-relation 285. Up to 40 conditions per place. [2022-11-18 19:31:29,862 INFO L137 encePairwiseOnDemand]: 186/216 looper letters, 21 selfloop transitions, 4 changer transitions 0/199 dead transitions. [2022-11-18 19:31:29,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 199 transitions, 478 flow [2022-11-18 19:31:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 940 transitions. [2022-11-18 19:31:29,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2022-11-18 19:31:29,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 940 transitions. [2022-11-18 19:31:29,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 940 transitions. [2022-11-18 19:31:29,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:29,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 940 transitions. [2022-11-18 19:31:29,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,874 INFO L175 Difference]: Start difference. First operand has 197 places, 216 transitions, 462 flow. Second operand 5 states and 940 transitions. [2022-11-18 19:31:29,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 199 transitions, 478 flow [2022-11-18 19:31:29,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:31:29,880 INFO L231 Difference]: Finished difference. Result has 203 places, 195 transitions, 446 flow [2022-11-18 19:31:29,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2022-11-18 19:31:29,881 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 6 predicate places. [2022-11-18 19:31:29,881 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 446 flow [2022-11-18 19:31:29,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:29,882 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] [2022-11-18 19:31:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:31:29,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1019464961, now seen corresponding path program 1 times [2022-11-18 19:31:29,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:29,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633449238] [2022-11-18 19:31:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:29,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:29,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633449238] [2022-11-18 19:31:29,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633449238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:29,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:29,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468962010] [2022-11-18 19:31:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:29,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:29,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:29,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 216 [2022-11-18 19:31:29,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:29,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 216 [2022-11-18 19:31:29,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:31,929 INFO L130 PetriNetUnfolder]: 1862/8989 cut-off events. [2022-11-18 19:31:31,929 INFO L131 PetriNetUnfolder]: For 1120/1120 co-relation queries the response was YES. [2022-11-18 19:31:31,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12460 conditions, 8989 events. 1862/8989 cut-off events. For 1120/1120 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 101754 event pairs, 1173 based on Foata normal form. 0/7854 useless extension candidates. Maximal degree in co-relation 12399. Up to 1994 conditions per place. [2022-11-18 19:31:32,099 INFO L137 encePairwiseOnDemand]: 208/216 looper letters, 52 selfloop transitions, 8 changer transitions 0/230 dead transitions. [2022-11-18 19:31:32,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 230 transitions, 678 flow [2022-11-18 19:31:32,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 899 transitions. [2022-11-18 19:31:32,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8324074074074074 [2022-11-18 19:31:32,104 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 899 transitions. [2022-11-18 19:31:32,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 899 transitions. [2022-11-18 19:31:32,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:32,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 899 transitions. [2022-11-18 19:31:32,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.8) internal successors, (899), 5 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,112 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,112 INFO L175 Difference]: Start difference. First operand has 203 places, 195 transitions, 446 flow. Second operand 5 states and 899 transitions. [2022-11-18 19:31:32,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 230 transitions, 678 flow [2022-11-18 19:31:32,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 230 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:31:32,121 INFO L231 Difference]: Finished difference. Result has 209 places, 202 transitions, 508 flow [2022-11-18 19:31:32,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=209, PETRI_TRANSITIONS=202} [2022-11-18 19:31:32,122 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 12 predicate places. [2022-11-18 19:31:32,122 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 202 transitions, 508 flow [2022-11-18 19:31:32,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:32,124 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:32,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:31:32,124 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 445855539, now seen corresponding path program 1 times [2022-11-18 19:31:32,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:32,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344587344] [2022-11-18 19:31:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:32,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:31:32,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:32,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344587344] [2022-11-18 19:31:32,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344587344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:32,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:32,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:32,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791869114] [2022-11-18 19:31:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:32,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-18 19:31:32,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 202 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:32,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-18 19:31:32,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:32,502 INFO L130 PetriNetUnfolder]: 37/905 cut-off events. [2022-11-18 19:31:32,502 INFO L131 PetriNetUnfolder]: For 210/508 co-relation queries the response was YES. [2022-11-18 19:31:32,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 905 events. 37/905 cut-off events. For 210/508 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5403 event pairs, 7 based on Foata normal form. 41/839 useless extension candidates. Maximal degree in co-relation 814. Up to 52 conditions per place. [2022-11-18 19:31:32,517 INFO L137 encePairwiseOnDemand]: 210/216 looper letters, 13 selfloop transitions, 8 changer transitions 0/202 dead transitions. [2022-11-18 19:31:32,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 202 transitions, 548 flow [2022-11-18 19:31:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 889 transitions. [2022-11-18 19:31:32,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8231481481481482 [2022-11-18 19:31:32,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 889 transitions. [2022-11-18 19:31:32,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 889 transitions. [2022-11-18 19:31:32,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:32,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 889 transitions. [2022-11-18 19:31:32,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,530 INFO L175 Difference]: Start difference. First operand has 209 places, 202 transitions, 508 flow. Second operand 5 states and 889 transitions. [2022-11-18 19:31:32,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 202 transitions, 548 flow [2022-11-18 19:31:32,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 202 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:31:32,536 INFO L231 Difference]: Finished difference. Result has 212 places, 202 transitions, 524 flow [2022-11-18 19:31:32,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=212, PETRI_TRANSITIONS=202} [2022-11-18 19:31:32,537 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 15 predicate places. [2022-11-18 19:31:32,538 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 202 transitions, 524 flow [2022-11-18 19:31:32,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:32,539 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:32,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:31:32,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash 936620548, now seen corresponding path program 1 times [2022-11-18 19:31:32,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:32,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109685600] [2022-11-18 19:31:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:32,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:32,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109685600] [2022-11-18 19:31:32,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109685600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:32,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32795632] [2022-11-18 19:31:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:32,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:32,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:32,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:32,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:31:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:31:32,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:32,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:32,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32795632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:32,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:32,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:31:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007199239] [2022-11-18 19:31:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:32,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:32,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:31:32,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-18 19:31:32,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 202 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:32,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:32,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-18 19:31:32,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:33,147 INFO L130 PetriNetUnfolder]: 37/903 cut-off events. [2022-11-18 19:31:33,148 INFO L131 PetriNetUnfolder]: For 220/490 co-relation queries the response was YES. [2022-11-18 19:31:33,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 903 events. 37/903 cut-off events. For 220/490 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5438 event pairs, 7 based on Foata normal form. 18/814 useless extension candidates. Maximal degree in co-relation 814. Up to 58 conditions per place. [2022-11-18 19:31:33,160 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 17 selfloop transitions, 6 changer transitions 0/204 dead transitions. [2022-11-18 19:31:33,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 204 transitions, 572 flow [2022-11-18 19:31:33,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:31:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:31:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1242 transitions. [2022-11-18 19:31:33,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2022-11-18 19:31:33,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1242 transitions. [2022-11-18 19:31:33,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1242 transitions. [2022-11-18 19:31:33,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:33,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1242 transitions. [2022-11-18 19:31:33,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.42857142857142) internal successors, (1242), 7 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:33,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:33,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:33,172 INFO L175 Difference]: Start difference. First operand has 212 places, 202 transitions, 524 flow. Second operand 7 states and 1242 transitions. [2022-11-18 19:31:33,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 204 transitions, 572 flow [2022-11-18 19:31:33,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 204 transitions, 560 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:31:33,179 INFO L231 Difference]: Finished difference. Result has 214 places, 201 transitions, 520 flow [2022-11-18 19:31:33,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=214, PETRI_TRANSITIONS=201} [2022-11-18 19:31:33,180 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 17 predicate places. [2022-11-18 19:31:33,180 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 201 transitions, 520 flow [2022-11-18 19:31:33,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:33,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:33,181 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] [2022-11-18 19:31:33,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:33,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:31:33,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:33,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1910770135, now seen corresponding path program 1 times [2022-11-18 19:31:33,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:33,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027054808] [2022-11-18 19:31:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:33,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:33,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027054808] [2022-11-18 19:31:33,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027054808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:33,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:33,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:31:33,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645630491] [2022-11-18 19:31:33,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:33,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:33,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:33,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:33,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 216 [2022-11-18 19:31:33,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 201 transitions, 520 flow. Second operand has 6 states, 6 states have (on average 163.5) internal successors, (981), 6 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:33,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:33,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 216 [2022-11-18 19:31:33,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:37,017 INFO L130 PetriNetUnfolder]: 4005/15360 cut-off events. [2022-11-18 19:31:37,017 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-18 19:31:37,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24287 conditions, 15360 events. 4005/15360 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 186619 event pairs, 971 based on Foata normal form. 0/13707 useless extension candidates. Maximal degree in co-relation 20965. Up to 2727 conditions per place. [2022-11-18 19:31:37,385 INFO L137 encePairwiseOnDemand]: 203/216 looper letters, 100 selfloop transitions, 27 changer transitions 0/291 dead transitions. [2022-11-18 19:31:37,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 291 transitions, 1100 flow [2022-11-18 19:31:37,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:31:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:31:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1587 transitions. [2022-11-18 19:31:37,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.816358024691358 [2022-11-18 19:31:37,390 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1587 transitions. [2022-11-18 19:31:37,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1587 transitions. [2022-11-18 19:31:37,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:37,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1587 transitions. [2022-11-18 19:31:37,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.33333333333334) internal successors, (1587), 9 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:37,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:37,401 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:37,401 INFO L175 Difference]: Start difference. First operand has 214 places, 201 transitions, 520 flow. Second operand 9 states and 1587 transitions. [2022-11-18 19:31:37,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 291 transitions, 1100 flow [2022-11-18 19:31:37,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 291 transitions, 1089 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 19:31:37,412 INFO L231 Difference]: Finished difference. Result has 223 places, 220 transitions, 713 flow [2022-11-18 19:31:37,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=713, PETRI_PLACES=223, PETRI_TRANSITIONS=220} [2022-11-18 19:31:37,413 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 26 predicate places. [2022-11-18 19:31:37,414 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 220 transitions, 713 flow [2022-11-18 19:31:37,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.5) internal successors, (981), 6 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:37,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:37,415 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] [2022-11-18 19:31:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:31:37,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:37,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash -895667111, now seen corresponding path program 1 times [2022-11-18 19:31:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:37,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780707670] [2022-11-18 19:31:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:37,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:37,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:37,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780707670] [2022-11-18 19:31:37,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780707670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:37,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:37,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:31:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988719449] [2022-11-18 19:31:37,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:37,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:37,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:37,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 216 [2022-11-18 19:31:37,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 220 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:37,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:37,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 216 [2022-11-18 19:31:37,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:41,081 INFO L130 PetriNetUnfolder]: 3804/14941 cut-off events. [2022-11-18 19:31:41,081 INFO L131 PetriNetUnfolder]: For 13091/13251 co-relation queries the response was YES. [2022-11-18 19:31:41,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28666 conditions, 14941 events. 3804/14941 cut-off events. For 13091/13251 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 180292 event pairs, 1231 based on Foata normal form. 228/13569 useless extension candidates. Maximal degree in co-relation 19160. Up to 2976 conditions per place. [2022-11-18 19:31:41,284 INFO L137 encePairwiseOnDemand]: 203/216 looper letters, 107 selfloop transitions, 27 changer transitions 0/298 dead transitions. [2022-11-18 19:31:41,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 298 transitions, 1358 flow [2022-11-18 19:31:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:31:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:31:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1585 transitions. [2022-11-18 19:31:41,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8153292181069959 [2022-11-18 19:31:41,291 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1585 transitions. [2022-11-18 19:31:41,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1585 transitions. [2022-11-18 19:31:41,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:41,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1585 transitions. [2022-11-18 19:31:41,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.11111111111111) internal successors, (1585), 9 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:41,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:41,304 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:41,304 INFO L175 Difference]: Start difference. First operand has 223 places, 220 transitions, 713 flow. Second operand 9 states and 1585 transitions. [2022-11-18 19:31:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 298 transitions, 1358 flow [2022-11-18 19:31:41,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 298 transitions, 1291 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-18 19:31:41,360 INFO L231 Difference]: Finished difference. Result has 229 places, 228 transitions, 794 flow [2022-11-18 19:31:41,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=794, PETRI_PLACES=229, PETRI_TRANSITIONS=228} [2022-11-18 19:31:41,362 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 32 predicate places. [2022-11-18 19:31:41,362 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 228 transitions, 794 flow [2022-11-18 19:31:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:41,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:41,363 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:41,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:31:41,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:41,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash 793502087, now seen corresponding path program 1 times [2022-11-18 19:31:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:41,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207823367] [2022-11-18 19:31:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:41,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:31:41,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:41,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207823367] [2022-11-18 19:31:41,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207823367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:41,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:41,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003292511] [2022-11-18 19:31:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:41,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:41,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 216 [2022-11-18 19:31:41,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 228 transitions, 794 flow. Second operand has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:41,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:41,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 216 [2022-11-18 19:31:41,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:45,235 INFO L130 PetriNetUnfolder]: 4393/19472 cut-off events. [2022-11-18 19:31:45,235 INFO L131 PetriNetUnfolder]: For 17033/17409 co-relation queries the response was YES. [2022-11-18 19:31:45,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37218 conditions, 19472 events. 4393/19472 cut-off events. For 17033/17409 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 252917 event pairs, 2297 based on Foata normal form. 208/17676 useless extension candidates. Maximal degree in co-relation 26408. Up to 4764 conditions per place. [2022-11-18 19:31:45,453 INFO L137 encePairwiseOnDemand]: 208/216 looper letters, 93 selfloop transitions, 11 changer transitions 0/277 dead transitions. [2022-11-18 19:31:45,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 277 transitions, 1310 flow [2022-11-18 19:31:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2022-11-18 19:31:45,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8305555555555556 [2022-11-18 19:31:45,458 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2022-11-18 19:31:45,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2022-11-18 19:31:45,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:45,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2022-11-18 19:31:45,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,464 INFO L175 Difference]: Start difference. First operand has 229 places, 228 transitions, 794 flow. Second operand 5 states and 897 transitions. [2022-11-18 19:31:45,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 277 transitions, 1310 flow [2022-11-18 19:31:45,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 277 transitions, 1268 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 19:31:45,536 INFO L231 Difference]: Finished difference. Result has 232 places, 233 transitions, 844 flow [2022-11-18 19:31:45,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=844, PETRI_PLACES=232, PETRI_TRANSITIONS=233} [2022-11-18 19:31:45,537 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 35 predicate places. [2022-11-18 19:31:45,537 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 233 transitions, 844 flow [2022-11-18 19:31:45,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:45,538 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:45,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:31:45,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash 759256255, now seen corresponding path program 1 times [2022-11-18 19:31:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:45,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489737538] [2022-11-18 19:31:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:31:45,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:45,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489737538] [2022-11-18 19:31:45,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489737538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:45,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:45,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:31:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128572801] [2022-11-18 19:31:45,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:45,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:45,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 216 [2022-11-18 19:31:45,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 233 transitions, 844 flow. Second operand has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:45,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 216 [2022-11-18 19:31:45,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:52,873 INFO L130 PetriNetUnfolder]: 9306/36293 cut-off events. [2022-11-18 19:31:52,874 INFO L131 PetriNetUnfolder]: For 32379/33547 co-relation queries the response was YES. [2022-11-18 19:31:53,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72232 conditions, 36293 events. 9306/36293 cut-off events. For 32379/33547 co-relation queries the response was YES. Maximal size of possible extension queue 1637. Compared 512799 event pairs, 2292 based on Foata normal form. 407/33511 useless extension candidates. Maximal degree in co-relation 65090. Up to 7057 conditions per place. [2022-11-18 19:31:53,380 INFO L137 encePairwiseOnDemand]: 203/216 looper letters, 149 selfloop transitions, 46 changer transitions 0/363 dead transitions. [2022-11-18 19:31:53,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 363 transitions, 1990 flow [2022-11-18 19:31:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:31:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:31:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1584 transitions. [2022-11-18 19:31:53,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-11-18 19:31:53,387 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1584 transitions. [2022-11-18 19:31:53,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1584 transitions. [2022-11-18 19:31:53,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:53,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1584 transitions. [2022-11-18 19:31:53,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.0) internal successors, (1584), 9 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:53,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:53,409 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:53,409 INFO L175 Difference]: Start difference. First operand has 232 places, 233 transitions, 844 flow. Second operand 9 states and 1584 transitions. [2022-11-18 19:31:53,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 363 transitions, 1990 flow [2022-11-18 19:31:53,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 363 transitions, 1984 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:31:53,614 INFO L231 Difference]: Finished difference. Result has 245 places, 268 transitions, 1328 flow [2022-11-18 19:31:53,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1328, PETRI_PLACES=245, PETRI_TRANSITIONS=268} [2022-11-18 19:31:53,615 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 48 predicate places. [2022-11-18 19:31:53,615 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 268 transitions, 1328 flow [2022-11-18 19:31:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:53,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:53,616 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:53,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:31:53,617 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:31:53,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2062108191, now seen corresponding path program 1 times [2022-11-18 19:31:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:53,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335679782] [2022-11-18 19:31:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:53,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:31:53,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:53,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335679782] [2022-11-18 19:31:53,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335679782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:53,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:53,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:31:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980824194] [2022-11-18 19:31:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:53,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:53,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 216 [2022-11-18 19:31:53,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 268 transitions, 1328 flow. Second operand has 6 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:53,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:53,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 216 [2022-11-18 19:31:53,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:01,520 INFO L130 PetriNetUnfolder]: 8844/35718 cut-off events. [2022-11-18 19:32:01,520 INFO L131 PetriNetUnfolder]: For 67064/68833 co-relation queries the response was YES. [2022-11-18 19:32:01,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80566 conditions, 35718 events. 8844/35718 cut-off events. For 67064/68833 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 507050 event pairs, 3327 based on Foata normal form. 863/33711 useless extension candidates. Maximal degree in co-relation 55827. Up to 7474 conditions per place. [2022-11-18 19:32:01,971 INFO L137 encePairwiseOnDemand]: 203/216 looper letters, 163 selfloop transitions, 41 changer transitions 0/372 dead transitions. [2022-11-18 19:32:01,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 372 transitions, 2448 flow [2022-11-18 19:32:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:32:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:32:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1580 transitions. [2022-11-18 19:32:01,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8127572016460906 [2022-11-18 19:32:01,977 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1580 transitions. [2022-11-18 19:32:01,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1580 transitions. [2022-11-18 19:32:01,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:01,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1580 transitions. [2022-11-18 19:32:01,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.55555555555554) internal successors, (1580), 9 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:01,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:01,988 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:01,988 INFO L175 Difference]: Start difference. First operand has 245 places, 268 transitions, 1328 flow. Second operand 9 states and 1580 transitions. [2022-11-18 19:32:01,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 372 transitions, 2448 flow [2022-11-18 19:32:02,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 372 transitions, 2389 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-18 19:32:02,374 INFO L231 Difference]: Finished difference. Result has 251 places, 280 transitions, 1539 flow [2022-11-18 19:32:02,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1539, PETRI_PLACES=251, PETRI_TRANSITIONS=280} [2022-11-18 19:32:02,376 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 54 predicate places. [2022-11-18 19:32:02,376 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 280 transitions, 1539 flow [2022-11-18 19:32:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:02,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:02,377 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:02,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:32:02,377 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:32:02,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:02,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1501214471, now seen corresponding path program 1 times [2022-11-18 19:32:02,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:02,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639650450] [2022-11-18 19:32:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:02,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:32:02,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:02,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639650450] [2022-11-18 19:32:02,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639650450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:02,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:02,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450964493] [2022-11-18 19:32:02,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:02,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:02,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:02,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 216 [2022-11-18 19:32:02,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 280 transitions, 1539 flow. Second operand has 4 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:02,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:02,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 216 [2022-11-18 19:32:02,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:10,694 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([833] t_funEXIT-->L716-5: Formula: (= v_t_funThread2of3ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0)))) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_13|} AuxVars[] AssignedVars[][314], [t_funThread1of3ForFork0InUse, 220#true, Black: 442#(<= ~global~0 1), t_funThread2of3ForFork0NotInUse, 418#(<= 1 |t_funThread1of3ForFork0_#t~post7#1|), Black: 449#(and (<= |t_funThread2of3ForFork0_#t~post7#1| 1) (<= ~global~0 1)), Black: 447#(and (= |t_funThread2of3ForFork0_#t~post5#1| 0) (<= ~global~0 1)), t_funThread3of3ForFork0NotInUse, 233#(<= 1 |ULTIMATE.start_main_~i~0#1|), Black: 443#(<= |t_funThread2of3ForFork0_#t~post7#1| 1), Black: 441#(= |t_funThread2of3ForFork0_#t~post5#1| 0), Black: 205#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 202#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 461#(<= 1 ~global~0), Black: 397#(= |t_funThread1of3ForFork0_#t~post5#1| 0), Black: 468#(and (<= 1 |t_funThread2of3ForFork0_#t~post7#1|) (<= 1 ~global~0)), 472#true, Black: 398#(<= ~global~0 1), Black: 213#(= |t_funThread1of3ForFork0_#t~post5#1| 0), Black: 399#(<= |t_funThread1of3ForFork0_#t~post7#1| 1), 98#L707-16true, Black: 215#(and (= |t_funThread1of3ForFork0_#t~post5#1| 0) (= ~global~0 0)), Black: 403#(and (= |t_funThread1of3ForFork0_#t~post5#1| 0) (<= ~global~0 1)), Black: 212#(= ~global~0 0), 142#L716-5true, 405#(and (<= |t_funThread1of3ForFork0_#t~post7#1| 1) (<= ~global~0 1)), 457#true, Black: 424#(and (<= 1 |t_funThread1of3ForFork0_#t~post7#1|) (<= 1 ~global~0)), 438#true, Black: 417#(<= 1 ~global~0), Black: 433#(and (= |t_funThread2of3ForFork0_#t~post5#1| 0) (= ~global~0 0)), Black: 431#(= |t_funThread2of3ForFork0_#t~post5#1| 0), Black: 430#(= ~global~0 0)]) [2022-11-18 19:32:10,694 INFO L383 tUnfolder$Statistics]: this new event has 181 ancestors and is cut-off event [2022-11-18 19:32:10,694 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-18 19:32:10,694 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-18 19:32:10,694 INFO L386 tUnfolder$Statistics]: existing Event has 181 ancestors and is cut-off event [2022-11-18 19:32:10,772 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([833] t_funEXIT-->L716-5: Formula: (= v_t_funThread2of3ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0)))) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_13|} AuxVars[] AssignedVars[][314], [t_funThread1of3ForFork0InUse, 220#true, t_funThread2of3ForFork0NotInUse, Black: 442#(<= ~global~0 1), Black: 449#(and (<= |t_funThread2of3ForFork0_#t~post7#1| 1) (<= ~global~0 1)), t_funThread3of3ForFork0NotInUse, Black: 447#(and (= |t_funThread2of3ForFork0_#t~post5#1| 0) (<= ~global~0 1)), 233#(<= 1 |ULTIMATE.start_main_~i~0#1|), Black: 443#(<= |t_funThread2of3ForFork0_#t~post7#1| 1), Black: 441#(= |t_funThread2of3ForFork0_#t~post5#1| 0), Black: 205#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 202#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 461#(<= 1 ~global~0), Black: 397#(= |t_funThread1of3ForFork0_#t~post5#1| 0), Black: 468#(and (<= 1 |t_funThread2of3ForFork0_#t~post7#1|) (<= 1 ~global~0)), 472#true, Black: 398#(<= ~global~0 1), Black: 399#(<= |t_funThread1of3ForFork0_#t~post7#1| 1), Black: 213#(= |t_funThread1of3ForFork0_#t~post5#1| 0), 98#L707-16true, Black: 215#(and (= |t_funThread1of3ForFork0_#t~post5#1| 0) (= ~global~0 0)), Black: 403#(and (= |t_funThread1of3ForFork0_#t~post5#1| 0) (<= ~global~0 1)), Black: 212#(= ~global~0 0), Black: 405#(and (<= |t_funThread1of3ForFork0_#t~post7#1| 1) (<= ~global~0 1)), 142#L716-5true, 457#true, 394#true, Black: 424#(and (<= 1 |t_funThread1of3ForFork0_#t~post7#1|) (<= 1 ~global~0)), 438#true, Black: 417#(<= 1 ~global~0), Black: 433#(and (= |t_funThread2of3ForFork0_#t~post5#1| 0) (= ~global~0 0)), Black: 431#(= |t_funThread2of3ForFork0_#t~post5#1| 0), Black: 430#(= ~global~0 0), 413#true]) [2022-11-18 19:32:10,772 INFO L383 tUnfolder$Statistics]: this new event has 181 ancestors and is cut-off event [2022-11-18 19:32:10,772 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-18 19:32:10,772 INFO L386 tUnfolder$Statistics]: existing Event has 181 ancestors and is cut-off event [2022-11-18 19:32:10,772 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-18 19:32:10,848 INFO L130 PetriNetUnfolder]: 9198/36402 cut-off events. [2022-11-18 19:32:10,849 INFO L131 PetriNetUnfolder]: For 93031/95907 co-relation queries the response was YES. [2022-11-18 19:32:11,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89394 conditions, 36402 events. 9198/36402 cut-off events. For 93031/95907 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 518580 event pairs, 3071 based on Foata normal form. 1450/34568 useless extension candidates. Maximal degree in co-relation 84212. Up to 10480 conditions per place. [2022-11-18 19:32:11,334 INFO L137 encePairwiseOnDemand]: 208/216 looper letters, 174 selfloop transitions, 15 changer transitions 0/366 dead transitions. [2022-11-18 19:32:11,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 366 transitions, 2790 flow [2022-11-18 19:32:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:32:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:32:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 895 transitions. [2022-11-18 19:32:11,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8287037037037037 [2022-11-18 19:32:11,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 895 transitions. [2022-11-18 19:32:11,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 895 transitions. [2022-11-18 19:32:11,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:11,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 895 transitions. [2022-11-18 19:32:11,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:11,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:11,344 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:11,344 INFO L175 Difference]: Start difference. First operand has 251 places, 280 transitions, 1539 flow. Second operand 5 states and 895 transitions. [2022-11-18 19:32:11,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 366 transitions, 2790 flow [2022-11-18 19:32:11,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 366 transitions, 2703 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-18 19:32:11,790 INFO L231 Difference]: Finished difference. Result has 254 places, 286 transitions, 1605 flow [2022-11-18 19:32:11,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1605, PETRI_PLACES=254, PETRI_TRANSITIONS=286} [2022-11-18 19:32:11,791 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 57 predicate places. [2022-11-18 19:32:11,792 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 286 transitions, 1605 flow [2022-11-18 19:32:11,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:11,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:11,792 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:11,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:32:11,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:32:11,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:11,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1398918612, now seen corresponding path program 1 times [2022-11-18 19:32:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:11,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992721255] [2022-11-18 19:32:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:11,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:11,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:32:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:11,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:32:11,859 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:32:11,859 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-18 19:32:11,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-18 19:32:11,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-18 19:32:11,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-18 19:32:11,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-18 19:32:11,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-18 19:32:11,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-18 19:32:11,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-18 19:32:11,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-18 19:32:11,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-18 19:32:11,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-18 19:32:11,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-18 19:32:11,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-18 19:32:11,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-18 19:32:11,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-18 19:32:11,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-18 19:32:11,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-18 19:32:11,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-18 19:32:11,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-18 19:32:11,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-18 19:32:11,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-18 19:32:11,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:32:11,866 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:11,868 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:32:11,868 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 19:32:11,910 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:32:11,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 259 transitions, 562 flow [2022-11-18 19:32:12,067 INFO L130 PetriNetUnfolder]: 81/696 cut-off events. [2022-11-18 19:32:12,068 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-18 19:32:12,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 696 events. 81/696 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2831 event pairs, 6 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 471. Up to 32 conditions per place. [2022-11-18 19:32:12,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 259 transitions, 562 flow [2022-11-18 19:32:12,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 259 transitions, 562 flow [2022-11-18 19:32:12,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:32:12,088 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;@7926293a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:32:12,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 19:32:12,092 INFO L130 PetriNetUnfolder]: 1/52 cut-off events. [2022-11-18 19:32:12,092 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:32:12,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:12,093 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:12,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:32:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:12,093 INFO L85 PathProgramCache]: Analyzing trace with hash -110712684, now seen corresponding path program 1 times [2022-11-18 19:32:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:12,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515667151] [2022-11-18 19:32:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:12,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515667151] [2022-11-18 19:32:12,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515667151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:12,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:12,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:12,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722618728] [2022-11-18 19:32:12,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:12,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:12,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:12,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:12,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:12,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 259 [2022-11-18 19:32:12,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 259 transitions, 562 flow. Second operand has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:12,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:12,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 259 [2022-11-18 19:32:12,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:12,369 INFO L130 PetriNetUnfolder]: 20/608 cut-off events. [2022-11-18 19:32:12,369 INFO L131 PetriNetUnfolder]: For 201/459 co-relation queries the response was YES. [2022-11-18 19:32:12,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 608 events. 20/608 cut-off events. For 201/459 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2544 event pairs, 6 based on Foata normal form. 576/1108 useless extension candidates. Maximal degree in co-relation 464. Up to 71 conditions per place. [2022-11-18 19:32:12,377 INFO L137 encePairwiseOnDemand]: 223/259 looper letters, 23 selfloop transitions, 4 changer transitions 0/236 dead transitions. [2022-11-18 19:32:12,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 236 transitions, 570 flow [2022-11-18 19:32:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:32:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:32:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1123 transitions. [2022-11-18 19:32:12,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8671814671814672 [2022-11-18 19:32:12,382 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1123 transitions. [2022-11-18 19:32:12,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1123 transitions. [2022-11-18 19:32:12,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:12,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1123 transitions. [2022-11-18 19:32:12,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 224.6) internal successors, (1123), 5 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:12,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:12,392 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:12,392 INFO L175 Difference]: Start difference. First operand has 235 places, 259 transitions, 562 flow. Second operand 5 states and 1123 transitions. [2022-11-18 19:32:12,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 236 transitions, 570 flow [2022-11-18 19:32:12,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 236 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:32:12,398 INFO L231 Difference]: Finished difference. Result has 241 places, 232 transitions, 534 flow [2022-11-18 19:32:12,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=534, PETRI_PLACES=241, PETRI_TRANSITIONS=232} [2022-11-18 19:32:12,399 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 6 predicate places. [2022-11-18 19:32:12,399 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 232 transitions, 534 flow [2022-11-18 19:32:12,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:12,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:12,400 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] [2022-11-18 19:32:12,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:32:12,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:32:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:12,401 INFO L85 PathProgramCache]: Analyzing trace with hash -291988348, now seen corresponding path program 1 times [2022-11-18 19:32:12,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:12,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142801168] [2022-11-18 19:32:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:12,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:12,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142801168] [2022-11-18 19:32:12,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142801168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:12,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:12,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276718494] [2022-11-18 19:32:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:12,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:12,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:12,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:12,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 259 [2022-11-18 19:32:12,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 232 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:12,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:12,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 259 [2022-11-18 19:32:12,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:23,643 INFO L130 PetriNetUnfolder]: 15402/57846 cut-off events. [2022-11-18 19:32:23,643 INFO L131 PetriNetUnfolder]: For 9753/9753 co-relation queries the response was YES. [2022-11-18 19:32:24,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83025 conditions, 57846 events. 15402/57846 cut-off events. For 9753/9753 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 827000 event pairs, 8594 based on Foata normal form. 0/51270 useless extension candidates. Maximal degree in co-relation 82963. Up to 15268 conditions per place. [2022-11-18 19:32:24,432 INFO L137 encePairwiseOnDemand]: 250/259 looper letters, 68 selfloop transitions, 10 changer transitions 0/279 dead transitions. [2022-11-18 19:32:24,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 279 transitions, 856 flow [2022-11-18 19:32:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:32:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:32:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1072 transitions. [2022-11-18 19:32:24,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8277992277992278 [2022-11-18 19:32:24,437 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1072 transitions. [2022-11-18 19:32:24,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1072 transitions. [2022-11-18 19:32:24,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:24,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1072 transitions. [2022-11-18 19:32:24,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.4) internal successors, (1072), 5 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:24,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:24,446 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:24,446 INFO L175 Difference]: Start difference. First operand has 241 places, 232 transitions, 534 flow. Second operand 5 states and 1072 transitions. [2022-11-18 19:32:24,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 279 transitions, 856 flow [2022-11-18 19:32:24,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 279 transitions, 854 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:32:24,460 INFO L231 Difference]: Finished difference. Result has 247 places, 241 transitions, 611 flow [2022-11-18 19:32:24,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=611, PETRI_PLACES=247, PETRI_TRANSITIONS=241} [2022-11-18 19:32:24,462 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 12 predicate places. [2022-11-18 19:32:24,462 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 241 transitions, 611 flow [2022-11-18 19:32:24,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:24,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:24,463 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:24,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 19:32:24,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:32:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1614451301, now seen corresponding path program 1 times [2022-11-18 19:32:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:24,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662695241] [2022-11-18 19:32:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:32:24,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:24,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662695241] [2022-11-18 19:32:24,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662695241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:24,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:24,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:24,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069426196] [2022-11-18 19:32:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:24,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:24,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:24,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 259 [2022-11-18 19:32:24,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 241 transitions, 611 flow. Second operand has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:24,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:24,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 259 [2022-11-18 19:32:24,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:25,830 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1133] t_funEXIT-->L716-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][142], [Black: 251#(= |t_funThread1of4ForFork0_#t~post5#1| 0), Black: 250#(= ~global~0 0), 248#true, t_funThread1of4ForFork0NotInUse, 88#L716-5true, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, 149#L707-6true, t_funThread4of4ForFork0NotInUse, Black: 240#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 241#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 243#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 258#true, Black: 253#(and (= |t_funThread1of4ForFork0_#t~post5#1| 0) (= ~global~0 0))]) [2022-11-18 19:32:25,831 INFO L383 tUnfolder$Statistics]: this new event has 224 ancestors and is cut-off event [2022-11-18 19:32:25,831 INFO L386 tUnfolder$Statistics]: existing Event has 172 ancestors and is cut-off event [2022-11-18 19:32:25,831 INFO L386 tUnfolder$Statistics]: existing Event has 224 ancestors and is cut-off event [2022-11-18 19:32:25,831 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-18 19:32:25,858 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1133] t_funEXIT-->L716-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][142], [Black: 251#(= |t_funThread1of4ForFork0_#t~post5#1| 0), Black: 250#(= ~global~0 0), 248#true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, 88#L716-5true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 240#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 241#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 243#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 258#true, Black: 253#(and (= |t_funThread1of4ForFork0_#t~post5#1| 0) (= ~global~0 0))]) [2022-11-18 19:32:25,858 INFO L383 tUnfolder$Statistics]: this new event has 251 ancestors and is cut-off event [2022-11-18 19:32:25,858 INFO L386 tUnfolder$Statistics]: existing Event has 95 ancestors and is cut-off event [2022-11-18 19:32:25,858 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-18 19:32:25,859 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-18 19:32:25,863 INFO L130 PetriNetUnfolder]: 161/2580 cut-off events. [2022-11-18 19:32:25,863 INFO L131 PetriNetUnfolder]: For 1111/2769 co-relation queries the response was YES. [2022-11-18 19:32:25,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3250 conditions, 2580 events. 161/2580 cut-off events. For 1111/2769 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 21253 event pairs, 59 based on Foata normal form. 99/2312 useless extension candidates. Maximal degree in co-relation 2505. Up to 194 conditions per place. [2022-11-18 19:32:25,897 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 15 selfloop transitions, 8 changer transitions 0/241 dead transitions. [2022-11-18 19:32:25,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 241 transitions, 655 flow [2022-11-18 19:32:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:32:25,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:32:25,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1066 transitions. [2022-11-18 19:32:25,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8231660231660232 [2022-11-18 19:32:25,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1066 transitions. [2022-11-18 19:32:25,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1066 transitions. [2022-11-18 19:32:25,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:25,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1066 transitions. [2022-11-18 19:32:25,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:25,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:25,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:25,906 INFO L175 Difference]: Start difference. First operand has 247 places, 241 transitions, 611 flow. Second operand 5 states and 1066 transitions. [2022-11-18 19:32:25,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 241 transitions, 655 flow [2022-11-18 19:32:25,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 241 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:32:25,912 INFO L231 Difference]: Finished difference. Result has 250 places, 241 transitions, 626 flow [2022-11-18 19:32:25,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=626, PETRI_PLACES=250, PETRI_TRANSITIONS=241} [2022-11-18 19:32:25,913 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 15 predicate places. [2022-11-18 19:32:25,913 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 241 transitions, 626 flow [2022-11-18 19:32:25,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:25,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:25,914 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:25,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:32:25,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:32:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1491616235, now seen corresponding path program 1 times [2022-11-18 19:32:25,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:25,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83163880] [2022-11-18 19:32:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:25,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:25,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83163880] [2022-11-18 19:32:25,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83163880] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:26,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433781611] [2022-11-18 19:32:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:26,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:26,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:26,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:26,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:32:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:26,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:32:26,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:26,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:32:26,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433781611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:26,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:32:26,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:32:26,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117628245] [2022-11-18 19:32:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:26,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:32:26,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 259 [2022-11-18 19:32:26,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 241 transitions, 626 flow. Second operand has 6 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:26,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:26,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 259 [2022-11-18 19:32:26,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:26,820 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1133] t_funEXIT-->L716-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][144], [Black: 251#(= |t_funThread1of4ForFork0_#t~post5#1| 0), Black: 250#(= ~global~0 0), t_funThread1of4ForFork0NotInUse, 88#L716-5true, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, 149#L707-6true, t_funThread4of4ForFork0NotInUse, 271#(<= 1 |ULTIMATE.start_main_~i~0#1|), Black: 240#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 241#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 243#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 258#true, Black: 253#(and (= |t_funThread1of4ForFork0_#t~post5#1| 0) (= ~global~0 0))]) [2022-11-18 19:32:26,821 INFO L383 tUnfolder$Statistics]: this new event has 224 ancestors and is cut-off event [2022-11-18 19:32:26,821 INFO L386 tUnfolder$Statistics]: existing Event has 172 ancestors and is cut-off event [2022-11-18 19:32:26,821 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-18 19:32:26,821 INFO L386 tUnfolder$Statistics]: existing Event has 224 ancestors and is cut-off event [2022-11-18 19:32:26,844 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1133] t_funEXIT-->L716-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][144], [Black: 251#(= |t_funThread1of4ForFork0_#t~post5#1| 0), Black: 250#(= ~global~0 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, 88#L716-5true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 271#(<= 1 |ULTIMATE.start_main_~i~0#1|), Black: 240#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 241#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 243#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 258#true, Black: 253#(and (= |t_funThread1of4ForFork0_#t~post5#1| 0) (= ~global~0 0))]) [2022-11-18 19:32:26,844 INFO L383 tUnfolder$Statistics]: this new event has 251 ancestors and is cut-off event [2022-11-18 19:32:26,844 INFO L386 tUnfolder$Statistics]: existing Event has 95 ancestors and is cut-off event [2022-11-18 19:32:26,844 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-18 19:32:26,844 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-18 19:32:26,847 INFO L130 PetriNetUnfolder]: 161/2577 cut-off events. [2022-11-18 19:32:26,848 INFO L131 PetriNetUnfolder]: For 1080/2576 co-relation queries the response was YES. [2022-11-18 19:32:26,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 2577 events. 161/2577 cut-off events. For 1080/2576 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 21313 event pairs, 59 based on Foata normal form. 38/2248 useless extension candidates. Maximal degree in co-relation 2504. Up to 203 conditions per place. [2022-11-18 19:32:26,888 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 19 selfloop transitions, 6 changer transitions 0/243 dead transitions. [2022-11-18 19:32:26,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 243 transitions, 678 flow [2022-11-18 19:32:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:32:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:32:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1489 transitions. [2022-11-18 19:32:26,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8212906784335355 [2022-11-18 19:32:26,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1489 transitions. [2022-11-18 19:32:26,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1489 transitions. [2022-11-18 19:32:26,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:26,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1489 transitions. [2022-11-18 19:32:26,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.71428571428572) internal successors, (1489), 7 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:26,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:26,901 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:26,901 INFO L175 Difference]: Start difference. First operand has 250 places, 241 transitions, 626 flow. Second operand 7 states and 1489 transitions. [2022-11-18 19:32:26,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 243 transitions, 678 flow [2022-11-18 19:32:26,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 243 transitions, 666 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:32:26,908 INFO L231 Difference]: Finished difference. Result has 252 places, 240 transitions, 622 flow [2022-11-18 19:32:26,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=252, PETRI_TRANSITIONS=240} [2022-11-18 19:32:26,909 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 17 predicate places. [2022-11-18 19:32:26,910 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 240 transitions, 622 flow [2022-11-18 19:32:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:26,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:26,911 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] [2022-11-18 19:32:26,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:27,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8e42461-f9ac-431b-8d7f-89bb1eb21e57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:32:27,118 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:32:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2105239776, now seen corresponding path program 1 times [2022-11-18 19:32:27,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:27,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888052568] [2022-11-18 19:32:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:27,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:27,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888052568] [2022-11-18 19:32:27,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888052568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:27,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:27,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:32:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848543629] [2022-11-18 19:32:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:27,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:27,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 259 [2022-11-18 19:32:27,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 240 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:27,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:27,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 259 [2022-11-18 19:32:27,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand