./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/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_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/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_1a9453a8-e912-40cc-b24e-bd90719623e6/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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- 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 20:37:38,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:37:38,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:37:38,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:37:38,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:37:38,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:37:38,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:37:38,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:37:38,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:37:38,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:37:38,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:37:38,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:37:38,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:37:38,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:37:38,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:37:38,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:37:38,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:37:38,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:37:38,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:37:38,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:37:38,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:37:38,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:37:38,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:37:38,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:37:38,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:37:38,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:37:38,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:37:38,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:37:38,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:37:38,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:37:38,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:37:38,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:37:38,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:37:38,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:37:38,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:37:38,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:37:38,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:37:38,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:37:38,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:37:38,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:37:38,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:37:38,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:37:38,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:37:38,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:37:38,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:37:38,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:37:38,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:37:38,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:37:38,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:37:38,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:37:38,569 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:37:38,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:37:38,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:37:38,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:37:38,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:37:38,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:37:38,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:37:38,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:37:38,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:37:38,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:37:38,571 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:37:38,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:37:38,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:37:38,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:37:38,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:37:38,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:37:38,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:37:38,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:37:38,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:37:38,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:37:38,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:37:38,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:37:38,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:37:38,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:37:38,574 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:37:38,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:37:38,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:37:38,575 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_1a9453a8-e912-40cc-b24e-bd90719623e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2022-11-18 20:37:38,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:37:38,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:37:38,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:37:38,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:37:38,890 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:37:38,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-18 20:37:38,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/data/62b7f9d6f/26bffe7a94d9445c9c96f394940aece3/FLAG26230c77e [2022-11-18 20:37:39,622 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:37:39,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-18 20:37:39,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/data/62b7f9d6f/26bffe7a94d9445c9c96f394940aece3/FLAG26230c77e [2022-11-18 20:37:39,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/data/62b7f9d6f/26bffe7a94d9445c9c96f394940aece3 [2022-11-18 20:37:39,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:37:39,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:37:39,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:37:39,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:37:39,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:37:39,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:39" (1/1) ... [2022-11-18 20:37:39,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43cb2792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:39, skipping insertion in model container [2022-11-18 20:37:39,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:39" (1/1) ... [2022-11-18 20:37:39,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:37:39,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:37:40,450 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_1a9453a8-e912-40cc-b24e-bd90719623e6/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-18 20:37:40,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:37:40,495 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:37:40,548 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_1a9453a8-e912-40cc-b24e-bd90719623e6/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-18 20:37:40,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:37:40,607 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:37:40,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40 WrapperNode [2022-11-18 20:37:40,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:37:40,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:37:40,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:37:40,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:37:40,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,671 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-11-18 20:37:40,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:37:40,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:37:40,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:37:40,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:37:40,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:37:40,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:37:40,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:37:40,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:37:40,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (1/1) ... [2022-11-18 20:37:40,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:37:40,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:40,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:37:40,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:37:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:37:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:37:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:37:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:37:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:37:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:37:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:37:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:37:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:37:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:37:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:37:40,804 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 20:37:40,989 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:37:40,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:37:41,356 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:37:41,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:37:41,376 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 20:37:41,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:41 BoogieIcfgContainer [2022-11-18 20:37:41,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:37:41,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:37:41,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:37:41,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:37:41,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:37:39" (1/3) ... [2022-11-18 20:37:41,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3740718e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:41, skipping insertion in model container [2022-11-18 20:37:41,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:40" (2/3) ... [2022-11-18 20:37:41,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3740718e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:41, skipping insertion in model container [2022-11-18 20:37:41,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:41" (3/3) ... [2022-11-18 20:37:41,397 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2022-11-18 20:37:41,408 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:37:41,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:37:41,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:37:41,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:37:41,532 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:37:41,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2022-11-18 20:37:41,724 INFO L130 PetriNetUnfolder]: 17/175 cut-off events. [2022-11-18 20:37:41,724 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:37:41,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 17/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 416 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-11-18 20:37:41,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 138 transitions, 284 flow [2022-11-18 20:37:41,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 135 transitions, 278 flow [2022-11-18 20:37:41,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:37:41,758 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;@70d03ab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:37:41,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 20:37:41,778 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-18 20:37:41,778 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:37:41,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:41,779 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:41,780 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 20:37:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:41,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1365124597, now seen corresponding path program 1 times [2022-11-18 20:37:41,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:41,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086952111] [2022-11-18 20:37:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:41,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:42,250 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 20:37:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:42,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086952111] [2022-11-18 20:37:42,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086952111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:42,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:42,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:37:42,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34488894] [2022-11-18 20:37:42,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:42,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:37:42,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:37:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:37:42,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2022-11-18 20:37:42,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 135 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 20:37:42,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:42,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2022-11-18 20:37:42,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:42,453 INFO L130 PetriNetUnfolder]: 0/125 cut-off events. [2022-11-18 20:37:42,453 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-18 20:37:42,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 125 events. 0/125 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 40/157 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 20:37:42,461 INFO L137 encePairwiseOnDemand]: 120/138 looper letters, 10 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2022-11-18 20:37:42,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 282 flow [2022-11-18 20:37:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:37:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:37:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2022-11-18 20:37:42,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797101449275362 [2022-11-18 20:37:42,480 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2022-11-18 20:37:42,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2022-11-18 20:37:42,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:42,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2022-11-18 20:37:42,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 20:37:42,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 20:37:42,497 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 20:37:42,499 INFO L175 Difference]: Start difference. First operand has 127 places, 135 transitions, 278 flow. Second operand 5 states and 607 transitions. [2022-11-18 20:37:42,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 282 flow [2022-11-18 20:37:42,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 123 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:37:42,507 INFO L231 Difference]: Finished difference. Result has 129 places, 121 transitions, 262 flow [2022-11-18 20:37:42,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=129, PETRI_TRANSITIONS=121} [2022-11-18 20:37:42,513 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 2 predicate places. [2022-11-18 20:37:42,513 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 121 transitions, 262 flow [2022-11-18 20:37:42,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 20:37:42,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:42,514 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 20:37:42,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:37:42,514 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 20:37:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2095806492, now seen corresponding path program 1 times [2022-11-18 20:37:42,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:42,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113898568] [2022-11-18 20:37:42,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:42,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:42,990 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 20:37:42,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:42,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113898568] [2022-11-18 20:37:42,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113898568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:42,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:42,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:37:42,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860066283] [2022-11-18 20:37:42,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:42,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:37:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:37:42,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:37:43,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-11-18 20:37:43,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 121 transitions, 262 flow. Second operand has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states 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 20:37:43,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:43,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-11-18 20:37:43,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:43,581 INFO L130 PetriNetUnfolder]: 53/403 cut-off events. [2022-11-18 20:37:43,582 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:37:43,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 403 events. 53/403 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1908 event pairs, 8 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 501. Up to 35 conditions per place. [2022-11-18 20:37:43,585 INFO L137 encePairwiseOnDemand]: 123/138 looper letters, 65 selfloop transitions, 29 changer transitions 1/175 dead transitions. [2022-11-18 20:37:43,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 175 transitions, 560 flow [2022-11-18 20:37:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:37:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:37:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1631 transitions. [2022-11-18 20:37:43,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6566022544283414 [2022-11-18 20:37:43,591 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1631 transitions. [2022-11-18 20:37:43,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1631 transitions. [2022-11-18 20:37:43,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:43,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1631 transitions. [2022-11-18 20:37:43,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.61111111111111) internal successors, (1631), 18 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states 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 20:37:43,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states 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 20:37:43,611 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states 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 20:37:43,611 INFO L175 Difference]: Start difference. First operand has 129 places, 121 transitions, 262 flow. Second operand 18 states and 1631 transitions. [2022-11-18 20:37:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 175 transitions, 560 flow [2022-11-18 20:37:43,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 175 transitions, 552 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:37:43,620 INFO L231 Difference]: Finished difference. Result has 151 places, 144 transitions, 434 flow [2022-11-18 20:37:43,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=434, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2022-11-18 20:37:43,621 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 24 predicate places. [2022-11-18 20:37:43,622 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 434 flow [2022-11-18 20:37:43,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states 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 20:37:43,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:43,624 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 20:37:43,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:37:43,625 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 20:37:43,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash 385768993, now seen corresponding path program 1 times [2022-11-18 20:37:43,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:43,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770657444] [2022-11-18 20:37:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:43,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:37:43,654 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:37:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:37:43,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:37:43,693 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:37:43,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 20:37:43,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 20:37:43,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 20:37:43,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 20:37:43,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 20:37:43,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 20:37:43,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 20:37:43,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 20:37:43,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 20:37:43,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 20:37:43,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 20:37:43,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 20:37:43,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 20:37:43,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:37:43,700 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 20:37:43,703 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:37:43,703 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:37:43,730 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:37:43,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 380 flow [2022-11-18 20:37:43,787 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2022-11-18 20:37:43,787 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:37:43,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 31/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 904 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-11-18 20:37:43,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 181 transitions, 380 flow [2022-11-18 20:37:43,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 181 transitions, 380 flow [2022-11-18 20:37:43,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:37:43,810 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;@70d03ab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:37:43,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:37:43,831 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-18 20:37:43,831 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:37:43,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:43,831 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:43,832 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 20:37:43,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1346863255, now seen corresponding path program 1 times [2022-11-18 20:37:43,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:43,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278946670] [2022-11-18 20:37:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:43,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,927 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 20:37:43,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:43,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278946670] [2022-11-18 20:37:43,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278946670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:43,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:43,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:37:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093241800] [2022-11-18 20:37:43,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:43,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:37:43,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:37:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:37:43,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2022-11-18 20:37:43,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 181 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:37:43,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:43,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2022-11-18 20:37:43,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:44,064 INFO L130 PetriNetUnfolder]: 2/241 cut-off events. [2022-11-18 20:37:44,064 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-18 20:37:44,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 241 events. 2/241 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 555 event pairs, 0 based on Foata normal form. 114/331 useless extension candidates. Maximal degree in co-relation 150. Up to 21 conditions per place. [2022-11-18 20:37:44,066 INFO L137 encePairwiseOnDemand]: 157/181 looper letters, 19 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-11-18 20:37:44,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 170 transitions, 404 flow [2022-11-18 20:37:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:37:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:37:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 797 transitions. [2022-11-18 20:37:44,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8806629834254144 [2022-11-18 20:37:44,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 797 transitions. [2022-11-18 20:37:44,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 797 transitions. [2022-11-18 20:37:44,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:44,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 797 transitions. [2022-11-18 20:37:44,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.4) internal successors, (797), 5 states have internal predecessors, (797), 0 states have call successors, (0), 0 states 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 20:37:44,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 20:37:44,077 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 20:37:44,077 INFO L175 Difference]: Start difference. First operand has 167 places, 181 transitions, 380 flow. Second operand 5 states and 797 transitions. [2022-11-18 20:37:44,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 170 transitions, 404 flow [2022-11-18 20:37:44,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 170 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:37:44,087 INFO L231 Difference]: Finished difference. Result has 173 places, 166 transitions, 376 flow [2022-11-18 20:37:44,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=173, PETRI_TRANSITIONS=166} [2022-11-18 20:37:44,090 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 6 predicate places. [2022-11-18 20:37:44,090 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 166 transitions, 376 flow [2022-11-18 20:37:44,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 20:37:44,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:44,095 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 20:37:44,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:37:44,097 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 20:37:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash -446371110, now seen corresponding path program 1 times [2022-11-18 20:37:44,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:44,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36698677] [2022-11-18 20:37:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:44,409 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 20:37:44,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:44,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36698677] [2022-11-18 20:37:44,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36698677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:44,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:44,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:37:44,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22139458] [2022-11-18 20:37:44,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:44,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:37:44,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:44,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:37:44,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:37:44,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 181 [2022-11-18 20:37:44,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 166 transitions, 376 flow. Second operand has 10 states, 10 states have (on average 117.8) internal successors, (1178), 10 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states 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 20:37:44,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:44,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 181 [2022-11-18 20:37:44,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:45,954 INFO L130 PetriNetUnfolder]: 1621/5586 cut-off events. [2022-11-18 20:37:45,954 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2022-11-18 20:37:45,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8523 conditions, 5586 events. 1621/5586 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 55290 event pairs, 402 based on Foata normal form. 0/5021 useless extension candidates. Maximal degree in co-relation 8430. Up to 971 conditions per place. [2022-11-18 20:37:45,995 INFO L137 encePairwiseOnDemand]: 165/181 looper letters, 182 selfloop transitions, 49 changer transitions 0/349 dead transitions. [2022-11-18 20:37:45,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 349 transitions, 1253 flow [2022-11-18 20:37:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:37:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:37:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2773 transitions. [2022-11-18 20:37:46,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6963837267704671 [2022-11-18 20:37:46,002 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2773 transitions. [2022-11-18 20:37:46,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2773 transitions. [2022-11-18 20:37:46,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:46,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2773 transitions. [2022-11-18 20:37:46,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 126.04545454545455) internal successors, (2773), 22 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states 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 20:37:46,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 181.0) internal successors, (4163), 23 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states 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 20:37:46,020 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 181.0) internal successors, (4163), 23 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states 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 20:37:46,020 INFO L175 Difference]: Start difference. First operand has 173 places, 166 transitions, 376 flow. Second operand 22 states and 2773 transitions. [2022-11-18 20:37:46,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 349 transitions, 1253 flow [2022-11-18 20:37:46,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 349 transitions, 1251 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:37:46,029 INFO L231 Difference]: Finished difference. Result has 209 places, 222 transitions, 762 flow [2022-11-18 20:37:46,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=762, PETRI_PLACES=209, PETRI_TRANSITIONS=222} [2022-11-18 20:37:46,030 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 42 predicate places. [2022-11-18 20:37:46,031 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 222 transitions, 762 flow [2022-11-18 20:37:46,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 117.8) internal successors, (1178), 10 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states 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 20:37:46,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:46,032 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:46,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:37:46,032 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 20:37:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:46,033 INFO L85 PathProgramCache]: Analyzing trace with hash 191759939, now seen corresponding path program 1 times [2022-11-18 20:37:46,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:46,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525629415] [2022-11-18 20:37:46,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:46,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:46,093 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 20:37:46,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525629415] [2022-11-18 20:37:46,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525629415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:46,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:46,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:37:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799988260] [2022-11-18 20:37:46,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:46,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:37:46,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:37:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:37:46,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2022-11-18 20:37:46,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 222 transitions, 762 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:46,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:46,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2022-11-18 20:37:46,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:46,461 INFO L130 PetriNetUnfolder]: 113/1318 cut-off events. [2022-11-18 20:37:46,461 INFO L131 PetriNetUnfolder]: For 1365/1556 co-relation queries the response was YES. [2022-11-18 20:37:46,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1318 events. 113/1318 cut-off events. For 1365/1556 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9970 event pairs, 25 based on Foata normal form. 62/1265 useless extension candidates. Maximal degree in co-relation 2153. Up to 89 conditions per place. [2022-11-18 20:37:46,475 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 14 selfloop transitions, 8 changer transitions 0/222 dead transitions. [2022-11-18 20:37:46,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 222 transitions, 804 flow [2022-11-18 20:37:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:37:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:37:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2022-11-18 20:37:46,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.830939226519337 [2022-11-18 20:37:46,478 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2022-11-18 20:37:46,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2022-11-18 20:37:46,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:46,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2022-11-18 20:37:46,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 20:37:46,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 20:37:46,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 20:37:46,485 INFO L175 Difference]: Start difference. First operand has 209 places, 222 transitions, 762 flow. Second operand 5 states and 752 transitions. [2022-11-18 20:37:46,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 222 transitions, 804 flow [2022-11-18 20:37:46,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 222 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:37:46,501 INFO L231 Difference]: Finished difference. Result has 212 places, 222 transitions, 781 flow [2022-11-18 20:37:46,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=781, PETRI_PLACES=212, PETRI_TRANSITIONS=222} [2022-11-18 20:37:46,506 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 45 predicate places. [2022-11-18 20:37:46,506 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 222 transitions, 781 flow [2022-11-18 20:37:46,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:46,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:46,507 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:46,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:37:46,507 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 20:37:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1649591280, now seen corresponding path program 1 times [2022-11-18 20:37:46,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:46,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942031066] [2022-11-18 20:37:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:46,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:46,644 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 20:37:46,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:46,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942031066] [2022-11-18 20:37:46,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942031066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:46,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378282684] [2022-11-18 20:37:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:46,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:46,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:46,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:46,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:37:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:46,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:37:46,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:46,882 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 20:37:46,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:37:46,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378282684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:46,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:37:46,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:37:46,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977611087] [2022-11-18 20:37:46,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:46,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:37:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:37:46,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:37:46,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2022-11-18 20:37:46,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 222 transitions, 781 flow. Second operand has 6 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 0 states have call successors, (0), 0 states 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 20:37:46,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:46,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2022-11-18 20:37:46,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:47,240 INFO L130 PetriNetUnfolder]: 113/1314 cut-off events. [2022-11-18 20:37:47,240 INFO L131 PetriNetUnfolder]: For 1377/1554 co-relation queries the response was YES. [2022-11-18 20:37:47,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 1314 events. 113/1314 cut-off events. For 1377/1554 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9904 event pairs, 25 based on Foata normal form. 34/1233 useless extension candidates. Maximal degree in co-relation 2169. Up to 89 conditions per place. [2022-11-18 20:37:47,254 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 18 selfloop transitions, 6 changer transitions 0/224 dead transitions. [2022-11-18 20:37:47,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 224 transitions, 837 flow [2022-11-18 20:37:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:37:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:37:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1051 transitions. [2022-11-18 20:37:47,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.829518547750592 [2022-11-18 20:37:47,257 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1051 transitions. [2022-11-18 20:37:47,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1051 transitions. [2022-11-18 20:37:47,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:47,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1051 transitions. [2022-11-18 20:37:47,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.14285714285714) internal successors, (1051), 7 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states 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 20:37:47,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states 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 20:37:47,265 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states 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 20:37:47,265 INFO L175 Difference]: Start difference. First operand has 212 places, 222 transitions, 781 flow. Second operand 7 states and 1051 transitions. [2022-11-18 20:37:47,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 224 transitions, 837 flow [2022-11-18 20:37:47,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 224 transitions, 825 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:37:47,277 INFO L231 Difference]: Finished difference. Result has 214 places, 221 transitions, 777 flow [2022-11-18 20:37:47,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=777, PETRI_PLACES=214, PETRI_TRANSITIONS=221} [2022-11-18 20:37:47,279 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 47 predicate places. [2022-11-18 20:37:47,279 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 221 transitions, 777 flow [2022-11-18 20:37:47,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 0 states have call successors, (0), 0 states 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 20:37:47,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:47,280 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 20:37:47,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:47,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:47,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:37:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1811148153, now seen corresponding path program 1 times [2022-11-18 20:37:47,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:47,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406426163] [2022-11-18 20:37:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:47,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:47,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:47,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406426163] [2022-11-18 20:37:47,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406426163] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:47,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107933130] [2022-11-18 20:37:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:47,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:47,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:47,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:47,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:37:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:47,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:37:47,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:48,138 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:37:48,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:37:48,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:37:48,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:37:48,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:37:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:48,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:48,702 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_70 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_70) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-18 20:37:48,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 20:37:48,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:37:48,899 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 20:37:48,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 20:37:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-18 20:37:48,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107933130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:37:48,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:37:48,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-18 20:37:48,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273146505] [2022-11-18 20:37:48,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:48,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:37:48,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:37:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=466, Unknown=8, NotChecked=44, Total=600 [2022-11-18 20:37:48,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 181 [2022-11-18 20:37:48,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 777 flow. Second operand has 25 states, 25 states have (on average 117.08) internal successors, (2927), 25 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states 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 20:37:48,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:48,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 181 [2022-11-18 20:37:48,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:51,230 INFO L130 PetriNetUnfolder]: 1781/6554 cut-off events. [2022-11-18 20:37:51,230 INFO L131 PetriNetUnfolder]: For 9503/9972 co-relation queries the response was YES. [2022-11-18 20:37:51,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13980 conditions, 6554 events. 1781/6554 cut-off events. For 9503/9972 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 67759 event pairs, 239 based on Foata normal form. 198/6189 useless extension candidates. Maximal degree in co-relation 13534. Up to 625 conditions per place. [2022-11-18 20:37:51,304 INFO L137 encePairwiseOnDemand]: 165/181 looper letters, 174 selfloop transitions, 76 changer transitions 0/367 dead transitions. [2022-11-18 20:37:51,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 367 transitions, 1955 flow [2022-11-18 20:37:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:37:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:37:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2745 transitions. [2022-11-18 20:37:51,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6893520843797087 [2022-11-18 20:37:51,311 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2745 transitions. [2022-11-18 20:37:51,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2745 transitions. [2022-11-18 20:37:51,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:51,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2745 transitions. [2022-11-18 20:37:51,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 124.77272727272727) internal successors, (2745), 22 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states 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 20:37:51,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 181.0) internal successors, (4163), 23 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states 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 20:37:51,330 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 181.0) internal successors, (4163), 23 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states 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 20:37:51,330 INFO L175 Difference]: Start difference. First operand has 214 places, 221 transitions, 777 flow. Second operand 22 states and 2745 transitions. [2022-11-18 20:37:51,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 367 transitions, 1955 flow [2022-11-18 20:37:51,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 367 transitions, 1944 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:37:51,407 INFO L231 Difference]: Finished difference. Result has 240 places, 247 transitions, 1185 flow [2022-11-18 20:37:51,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1185, PETRI_PLACES=240, PETRI_TRANSITIONS=247} [2022-11-18 20:37:51,409 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 73 predicate places. [2022-11-18 20:37:51,409 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 247 transitions, 1185 flow [2022-11-18 20:37:51,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 117.08) internal successors, (2927), 25 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states 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 20:37:51,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:51,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:51,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:37:51,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:37:51,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:51,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1426318387, now seen corresponding path program 1 times [2022-11-18 20:37:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:51,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339700693] [2022-11-18 20:37:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:51,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:51,867 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 20:37:51,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:51,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339700693] [2022-11-18 20:37:51,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339700693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:51,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:51,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:37:51,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940185094] [2022-11-18 20:37:51,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:51,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:37:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:37:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:37:51,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 181 [2022-11-18 20:37:51,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 247 transitions, 1185 flow. Second operand has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states 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 20:37:51,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:51,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 181 [2022-11-18 20:37:51,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:53,952 INFO L130 PetriNetUnfolder]: 1971/8242 cut-off events. [2022-11-18 20:37:53,952 INFO L131 PetriNetUnfolder]: For 10965/11255 co-relation queries the response was YES. [2022-11-18 20:37:54,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17236 conditions, 8242 events. 1971/8242 cut-off events. For 10965/11255 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 91208 event pairs, 550 based on Foata normal form. 58/7372 useless extension candidates. Maximal degree in co-relation 17050. Up to 1377 conditions per place. [2022-11-18 20:37:54,050 INFO L137 encePairwiseOnDemand]: 168/181 looper letters, 166 selfloop transitions, 58 changer transitions 0/369 dead transitions. [2022-11-18 20:37:54,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 369 transitions, 2141 flow [2022-11-18 20:37:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:37:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:37:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1473 transitions. [2022-11-18 20:37:54,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7398292315419387 [2022-11-18 20:37:54,054 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1473 transitions. [2022-11-18 20:37:54,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1473 transitions. [2022-11-18 20:37:54,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:54,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1473 transitions. [2022-11-18 20:37:54,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.9090909090909) internal successors, (1473), 11 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states 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 20:37:54,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 181.0) internal successors, (2172), 12 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states 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 20:37:54,065 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 181.0) internal successors, (2172), 12 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states 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 20:37:54,065 INFO L175 Difference]: Start difference. First operand has 240 places, 247 transitions, 1185 flow. Second operand 11 states and 1473 transitions. [2022-11-18 20:37:54,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 369 transitions, 2141 flow [2022-11-18 20:37:54,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 369 transitions, 2100 flow, removed 20 selfloop flow, removed 1 redundant places. [2022-11-18 20:37:54,155 INFO L231 Difference]: Finished difference. Result has 256 places, 289 transitions, 1588 flow [2022-11-18 20:37:54,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1588, PETRI_PLACES=256, PETRI_TRANSITIONS=289} [2022-11-18 20:37:54,156 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 89 predicate places. [2022-11-18 20:37:54,157 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 289 transitions, 1588 flow [2022-11-18 20:37:54,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states 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 20:37:54,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:54,158 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 20:37:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:37:54,159 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 20:37:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1218400300, now seen corresponding path program 1 times [2022-11-18 20:37:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950928325] [2022-11-18 20:37:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:37:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950928325] [2022-11-18 20:37:54,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950928325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285083846] [2022-11-18 20:37:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:54,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:54,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:54,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:54,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:37:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:54,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:37:54,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:54,756 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:37:54,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:37:54,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:37:54,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:37:55,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:37:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:37:55,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:55,160 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_106 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_106) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-18 20:37:55,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 20:37:55,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:37:55,351 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 20:37:55,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 20:37:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-18 20:37:55,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285083846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:37:55,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:37:55,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-18 20:37:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285638779] [2022-11-18 20:37:55,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:37:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:37:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=468, Unknown=1, NotChecked=44, Total=600 [2022-11-18 20:37:55,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 181 [2022-11-18 20:37:55,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 289 transitions, 1588 flow. Second operand has 25 states, 25 states have (on average 117.2) internal successors, (2930), 25 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states 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 20:37:55,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:55,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 181 [2022-11-18 20:37:55,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:59,969 INFO L130 PetriNetUnfolder]: 3705/12926 cut-off events. [2022-11-18 20:37:59,970 INFO L131 PetriNetUnfolder]: For 39178/40185 co-relation queries the response was YES. [2022-11-18 20:38:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36143 conditions, 12926 events. 3705/12926 cut-off events. For 39178/40185 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 152214 event pairs, 369 based on Foata normal form. 396/12391 useless extension candidates. Maximal degree in co-relation 35781. Up to 1663 conditions per place. [2022-11-18 20:38:00,121 INFO L137 encePairwiseOnDemand]: 162/181 looper letters, 303 selfloop transitions, 231 changer transitions 0/687 dead transitions. [2022-11-18 20:38:00,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 687 transitions, 5694 flow [2022-11-18 20:38:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:38:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:38:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4199 transitions. [2022-11-18 20:38:00,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6823204419889503 [2022-11-18 20:38:00,132 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4199 transitions. [2022-11-18 20:38:00,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4199 transitions. [2022-11-18 20:38:00,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:00,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4199 transitions. [2022-11-18 20:38:00,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 123.5) internal successors, (4199), 34 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states 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 20:38:00,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 181.0) internal successors, (6335), 35 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states 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 20:38:00,178 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 181.0) internal successors, (6335), 35 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states 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 20:38:00,179 INFO L175 Difference]: Start difference. First operand has 256 places, 289 transitions, 1588 flow. Second operand 34 states and 4199 transitions. [2022-11-18 20:38:00,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 687 transitions, 5694 flow [2022-11-18 20:38:00,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 687 transitions, 5650 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-11-18 20:38:00,510 INFO L231 Difference]: Finished difference. Result has 306 places, 475 transitions, 3975 flow [2022-11-18 20:38:00,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3975, PETRI_PLACES=306, PETRI_TRANSITIONS=475} [2022-11-18 20:38:00,511 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 139 predicate places. [2022-11-18 20:38:00,512 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 475 transitions, 3975 flow [2022-11-18 20:38:00,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 117.2) internal successors, (2930), 25 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states 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 20:38:00,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:00,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:00,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:00,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:00,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:38:00,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:00,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1266196469, now seen corresponding path program 1 times [2022-11-18 20:38:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:00,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859786609] [2022-11-18 20:38:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:00,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:01,062 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 20:38:01,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:01,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859786609] [2022-11-18 20:38:01,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859786609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:01,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:01,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:38:01,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482527235] [2022-11-18 20:38:01,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:01,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:38:01,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:01,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:38:01,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:38:01,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 181 [2022-11-18 20:38:01,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 475 transitions, 3975 flow. Second operand has 13 states, 13 states have (on average 110.76923076923077) internal successors, (1440), 13 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 20:38:01,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:01,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 181 [2022-11-18 20:38:01,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:08,212 INFO L130 PetriNetUnfolder]: 7089/22266 cut-off events. [2022-11-18 20:38:08,213 INFO L131 PetriNetUnfolder]: For 110633/112179 co-relation queries the response was YES. [2022-11-18 20:38:08,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74720 conditions, 22266 events. 7089/22266 cut-off events. For 110633/112179 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 278443 event pairs, 1116 based on Foata normal form. 673/21665 useless extension candidates. Maximal degree in co-relation 74515. Up to 4601 conditions per place. [2022-11-18 20:38:08,533 INFO L137 encePairwiseOnDemand]: 159/181 looper letters, 455 selfloop transitions, 280 changer transitions 13/880 dead transitions. [2022-11-18 20:38:08,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 880 transitions, 9155 flow [2022-11-18 20:38:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:38:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:38:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4519 transitions. [2022-11-18 20:38:08,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.657022390229718 [2022-11-18 20:38:08,543 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4519 transitions. [2022-11-18 20:38:08,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4519 transitions. [2022-11-18 20:38:08,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:08,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4519 transitions. [2022-11-18 20:38:08,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 118.92105263157895) internal successors, (4519), 38 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states 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 20:38:08,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 181.0) internal successors, (7059), 39 states have internal predecessors, (7059), 0 states have call successors, (0), 0 states 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 20:38:08,572 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 181.0) internal successors, (7059), 39 states have internal predecessors, (7059), 0 states have call successors, (0), 0 states 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 20:38:08,573 INFO L175 Difference]: Start difference. First operand has 306 places, 475 transitions, 3975 flow. Second operand 38 states and 4519 transitions. [2022-11-18 20:38:08,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 880 transitions, 9155 flow [2022-11-18 20:38:09,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 880 transitions, 8824 flow, removed 165 selfloop flow, removed 1 redundant places. [2022-11-18 20:38:09,806 INFO L231 Difference]: Finished difference. Result has 354 places, 566 transitions, 5606 flow [2022-11-18 20:38:09,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=3894, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5606, PETRI_PLACES=354, PETRI_TRANSITIONS=566} [2022-11-18 20:38:09,808 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 187 predicate places. [2022-11-18 20:38:09,808 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 566 transitions, 5606 flow [2022-11-18 20:38:09,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 110.76923076923077) internal successors, (1440), 13 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 20:38:09,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:09,809 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 20:38:09,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:38:09,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:38:09,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:09,811 INFO L85 PathProgramCache]: Analyzing trace with hash 838614274, now seen corresponding path program 1 times [2022-11-18 20:38:09,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:09,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251736819] [2022-11-18 20:38:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:09,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:38:09,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:38:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:38:09,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:38:09,856 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:38:09,856 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 20:38:09,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 20:38:09,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 20:38:09,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 20:38:09,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 20:38:09,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 20:38:09,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 20:38:09,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 20:38:09,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 20:38:09,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 20:38:09,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 20:38:09,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 20:38:09,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 20:38:09,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 20:38:09,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 20:38:09,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 20:38:09,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 20:38:09,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:38:09,861 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:09,862 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:38:09,862 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:38:09,909 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:38:09,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2022-11-18 20:38:10,094 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2022-11-18 20:38:10,094 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:38:10,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1601 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2022-11-18 20:38:10,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 224 transitions, 478 flow [2022-11-18 20:38:10,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 224 transitions, 478 flow [2022-11-18 20:38:10,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:38:10,102 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;@70d03ab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:38:10,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 20:38:10,107 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-18 20:38:10,107 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:38:10,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:10,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:10,108 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 20:38:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -241720334, now seen corresponding path program 1 times [2022-11-18 20:38:10,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:10,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072249241] [2022-11-18 20:38:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:10,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:10,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:10,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072249241] [2022-11-18 20:38:10,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072249241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:10,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:10,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:10,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979956475] [2022-11-18 20:38:10,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:10,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:10,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-18 20:38:10,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 224 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 20:38:10,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:10,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-18 20:38:10,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:10,262 INFO L130 PetriNetUnfolder]: 7/384 cut-off events. [2022-11-18 20:38:10,263 INFO L131 PetriNetUnfolder]: For 103/272 co-relation queries the response was YES. [2022-11-18 20:38:10,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 384 events. 7/384 cut-off events. For 103/272 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1205 event pairs, 1 based on Foata normal form. 280/620 useless extension candidates. Maximal degree in co-relation 277. Up to 40 conditions per place. [2022-11-18 20:38:10,266 INFO L137 encePairwiseOnDemand]: 194/224 looper letters, 21 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2022-11-18 20:38:10,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 207 transitions, 494 flow [2022-11-18 20:38:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 980 transitions. [2022-11-18 20:38:10,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-18 20:38:10,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 980 transitions. [2022-11-18 20:38:10,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 980 transitions. [2022-11-18 20:38:10,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:10,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 980 transitions. [2022-11-18 20:38:10,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 20:38:10,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 20:38:10,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 20:38:10,273 INFO L175 Difference]: Start difference. First operand has 205 places, 224 transitions, 478 flow. Second operand 5 states and 980 transitions. [2022-11-18 20:38:10,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 207 transitions, 494 flow [2022-11-18 20:38:10,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 207 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:38:10,278 INFO L231 Difference]: Finished difference. Result has 211 places, 203 transitions, 462 flow [2022-11-18 20:38:10,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=211, PETRI_TRANSITIONS=203} [2022-11-18 20:38:10,279 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 6 predicate places. [2022-11-18 20:38:10,279 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 203 transitions, 462 flow [2022-11-18 20:38:10,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 20:38:10,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:10,280 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 20:38:10,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:38:10,280 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 20:38:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:10,281 INFO L85 PathProgramCache]: Analyzing trace with hash -999117853, now seen corresponding path program 1 times [2022-11-18 20:38:10,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:10,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519377147] [2022-11-18 20:38:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:10,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,458 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 20:38:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:10,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519377147] [2022-11-18 20:38:10,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519377147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:10,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:10,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:38:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925956076] [2022-11-18 20:38:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:10,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:38:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:38:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:38:10,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 224 [2022-11-18 20:38:10,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 203 transitions, 462 flow. Second operand has 10 states, 10 states have (on average 147.8) internal successors, (1478), 10 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states 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 20:38:10,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:10,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 224 [2022-11-18 20:38:10,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:17,379 INFO L130 PetriNetUnfolder]: 16590/49195 cut-off events. [2022-11-18 20:38:17,380 INFO L131 PetriNetUnfolder]: For 1910/1910 co-relation queries the response was YES. [2022-11-18 20:38:17,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74620 conditions, 49195 events. 16590/49195 cut-off events. For 1910/1910 co-relation queries the response was YES. Maximal size of possible extension queue 1599. Compared 640789 event pairs, 3655 based on Foata normal form. 0/44623 useless extension candidates. Maximal degree in co-relation 74526. Up to 10208 conditions per place. [2022-11-18 20:38:17,791 INFO L137 encePairwiseOnDemand]: 207/224 looper letters, 266 selfloop transitions, 61 changer transitions 0/475 dead transitions. [2022-11-18 20:38:17,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 475 transitions, 1781 flow [2022-11-18 20:38:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:38:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:38:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3529 transitions. [2022-11-18 20:38:17,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.716112012987013 [2022-11-18 20:38:17,802 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3529 transitions. [2022-11-18 20:38:17,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3529 transitions. [2022-11-18 20:38:17,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:17,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3529 transitions. [2022-11-18 20:38:17,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 160.4090909090909) internal successors, (3529), 22 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states 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 20:38:17,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 224.0) internal successors, (5152), 23 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states 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 20:38:17,830 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 224.0) internal successors, (5152), 23 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states 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 20:38:17,831 INFO L175 Difference]: Start difference. First operand has 211 places, 203 transitions, 462 flow. Second operand 22 states and 3529 transitions. [2022-11-18 20:38:17,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 475 transitions, 1781 flow [2022-11-18 20:38:17,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 475 transitions, 1779 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:38:17,847 INFO L231 Difference]: Finished difference. Result has 247 places, 280 transitions, 956 flow [2022-11-18 20:38:17,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=956, PETRI_PLACES=247, PETRI_TRANSITIONS=280} [2022-11-18 20:38:17,849 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 42 predicate places. [2022-11-18 20:38:17,849 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 280 transitions, 956 flow [2022-11-18 20:38:17,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 147.8) internal successors, (1478), 10 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states 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 20:38:17,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:17,850 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:17,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:38:17,850 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 20:38:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1019277067, now seen corresponding path program 1 times [2022-11-18 20:38:17,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804152531] [2022-11-18 20:38:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:17,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:17,907 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 20:38:17,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:17,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804152531] [2022-11-18 20:38:17,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804152531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:17,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:17,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:17,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629390966] [2022-11-18 20:38:17,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:17,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:17,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:17,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:17,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-18 20:38:17,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 280 transitions, 956 flow. Second operand has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 20:38:17,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:17,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-18 20:38:17,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:18,726 INFO L130 PetriNetUnfolder]: 421/3996 cut-off events. [2022-11-18 20:38:18,726 INFO L131 PetriNetUnfolder]: For 3951/4652 co-relation queries the response was YES. [2022-11-18 20:38:18,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6668 conditions, 3996 events. 421/3996 cut-off events. For 3951/4652 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 40683 event pairs, 81 based on Foata normal form. 173/3783 useless extension candidates. Maximal degree in co-relation 6362. Up to 246 conditions per place. [2022-11-18 20:38:18,755 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 16 selfloop transitions, 8 changer transitions 0/280 dead transitions. [2022-11-18 20:38:18,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 280 transitions, 1002 flow [2022-11-18 20:38:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 929 transitions. [2022-11-18 20:38:18,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294642857142858 [2022-11-18 20:38:18,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 929 transitions. [2022-11-18 20:38:18,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 929 transitions. [2022-11-18 20:38:18,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:18,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 929 transitions. [2022-11-18 20:38:18,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.8) internal successors, (929), 5 states have internal predecessors, (929), 0 states have call successors, (0), 0 states 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 20:38:18,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 20:38:18,762 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 20:38:18,763 INFO L175 Difference]: Start difference. First operand has 247 places, 280 transitions, 956 flow. Second operand 5 states and 929 transitions. [2022-11-18 20:38:18,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 280 transitions, 1002 flow [2022-11-18 20:38:18,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 280 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:38:18,784 INFO L231 Difference]: Finished difference. Result has 250 places, 280 transitions, 975 flow [2022-11-18 20:38:18,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=975, PETRI_PLACES=250, PETRI_TRANSITIONS=280} [2022-11-18 20:38:18,785 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 45 predicate places. [2022-11-18 20:38:18,786 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 280 transitions, 975 flow [2022-11-18 20:38:18,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 20:38:18,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:18,787 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:18,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:38:18,787 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 20:38:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1532817314, now seen corresponding path program 1 times [2022-11-18 20:38:18,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:18,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694569821] [2022-11-18 20:38:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:18,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:18,864 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 20:38:18,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:18,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694569821] [2022-11-18 20:38:18,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694569821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:18,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169932933] [2022-11-18 20:38:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:18,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:18,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:18,867 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:18,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:38:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:18,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:38:18,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:19,038 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 20:38:19,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:19,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169932933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:19,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:19,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:38:19,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705231178] [2022-11-18 20:38:19,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:19,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:38:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:19,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:38:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:19,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-18 20:38:19,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 280 transitions, 975 flow. Second operand has 6 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 20:38:19,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:19,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-18 20:38:19,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:19,930 INFO L130 PetriNetUnfolder]: 406/4308 cut-off events. [2022-11-18 20:38:19,930 INFO L131 PetriNetUnfolder]: For 3534/4113 co-relation queries the response was YES. [2022-11-18 20:38:19,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6813 conditions, 4308 events. 406/4308 cut-off events. For 3534/4113 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 45282 event pairs, 65 based on Foata normal form. 73/3941 useless extension candidates. Maximal degree in co-relation 6575. Up to 215 conditions per place. [2022-11-18 20:38:19,956 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 20 selfloop transitions, 6 changer transitions 0/282 dead transitions. [2022-11-18 20:38:19,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 282 transitions, 1035 flow [2022-11-18 20:38:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:38:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:38:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1298 transitions. [2022-11-18 20:38:19,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278061224489796 [2022-11-18 20:38:19,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1298 transitions. [2022-11-18 20:38:19,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1298 transitions. [2022-11-18 20:38:19,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:19,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1298 transitions. [2022-11-18 20:38:19,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.42857142857142) internal successors, (1298), 7 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:19,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 20:38:19,967 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 20:38:19,967 INFO L175 Difference]: Start difference. First operand has 250 places, 280 transitions, 975 flow. Second operand 7 states and 1298 transitions. [2022-11-18 20:38:19,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 282 transitions, 1035 flow [2022-11-18 20:38:19,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 282 transitions, 1023 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:38:19,983 INFO L231 Difference]: Finished difference. Result has 252 places, 279 transitions, 971 flow [2022-11-18 20:38:19,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=971, PETRI_PLACES=252, PETRI_TRANSITIONS=279} [2022-11-18 20:38:19,984 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 47 predicate places. [2022-11-18 20:38:19,985 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 279 transitions, 971 flow [2022-11-18 20:38:19,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 20:38:19,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:19,986 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 20:38:19,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:38:20,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:38:20,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:38:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash 899224098, now seen corresponding path program 1 times [2022-11-18 20:38:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:20,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738168364] [2022-11-18 20:38:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:20,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738168364] [2022-11-18 20:38:20,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738168364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:20,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13750488] [2022-11-18 20:38:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:20,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:20,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:20,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:20,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:38:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:20,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:38:20,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:20,644 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:38:20,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:38:20,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:38:20,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:38:20,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:38:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:20,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:21,103 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-18 20:38:21,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 20:38:21,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:38:21,230 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 20:38:21,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 20:38:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-18 20:38:21,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13750488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:21,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:21,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-18 20:38:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184198331] [2022-11-18 20:38:21,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:21,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:38:21,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:38:21,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=4, NotChecked=44, Total=600 [2022-11-18 20:38:21,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 224 [2022-11-18 20:38:21,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 279 transitions, 971 flow. Second operand has 25 states, 25 states have (on average 147.08) internal successors, (3677), 25 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states 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 20:38:21,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:21,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 224 [2022-11-18 20:38:21,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:33,896 INFO L130 PetriNetUnfolder]: 24663/71284 cut-off events. [2022-11-18 20:38:33,896 INFO L131 PetriNetUnfolder]: For 91750/97652 co-relation queries the response was YES. [2022-11-18 20:38:34,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149524 conditions, 71284 events. 24663/71284 cut-off events. For 91750/97652 co-relation queries the response was YES. Maximal size of possible extension queue 2399. Compared 973629 event pairs, 2281 based on Foata normal form. 1453/67258 useless extension candidates. Maximal degree in co-relation 147130. Up to 6943 conditions per place. [2022-11-18 20:38:34,839 INFO L137 encePairwiseOnDemand]: 203/224 looper letters, 350 selfloop transitions, 148 changer transitions 0/645 dead transitions. [2022-11-18 20:38:34,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 645 transitions, 3451 flow [2022-11-18 20:38:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:38:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 20:38:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4491 transitions. [2022-11-18 20:38:34,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7160395408163265 [2022-11-18 20:38:34,849 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4491 transitions. [2022-11-18 20:38:34,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4491 transitions. [2022-11-18 20:38:34,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:34,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4491 transitions. [2022-11-18 20:38:34,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.39285714285714) internal successors, (4491), 28 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states 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 20:38:34,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 224.0) internal successors, (6496), 29 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states 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 20:38:34,873 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 224.0) internal successors, (6496), 29 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states 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 20:38:34,874 INFO L175 Difference]: Start difference. First operand has 252 places, 279 transitions, 971 flow. Second operand 28 states and 4491 transitions. [2022-11-18 20:38:34,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 645 transitions, 3451 flow [2022-11-18 20:38:37,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 645 transitions, 3440 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:38:37,812 INFO L231 Difference]: Finished difference. Result has 290 places, 364 transitions, 1980 flow [2022-11-18 20:38:37,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1980, PETRI_PLACES=290, PETRI_TRANSITIONS=364} [2022-11-18 20:38:37,813 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 85 predicate places. [2022-11-18 20:38:37,813 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 364 transitions, 1980 flow [2022-11-18 20:38:37,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 147.08) internal successors, (3677), 25 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states 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 20:38:37,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:37,815 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:37,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:38,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a9453a8-e912-40cc-b24e-bd90719623e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:38:38,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:38:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:38,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1181002474, now seen corresponding path program 1 times [2022-11-18 20:38:38,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:38,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264072319] [2022-11-18 20:38:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:38,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:38,228 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 20:38:38,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:38,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264072319] [2022-11-18 20:38:38,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264072319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:38,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:38,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:38:38,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193408313] [2022-11-18 20:38:38,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:38,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:38:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:38:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:38:38,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 224 [2022-11-18 20:38:38,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 364 transitions, 1980 flow. Second operand has 6 states, 6 states have (on average 156.16666666666666) internal successors, (937), 6 states have internal predecessors, (937), 0 states have call successors, (0), 0 states 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 20:38:38,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:38,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 224 [2022-11-18 20:38:38,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand