./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R --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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- 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-38b53e6 [2022-11-25 18:09:12,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:09:12,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:09:12,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:09:12,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:09:12,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:09:12,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:09:12,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:09:12,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:09:12,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:09:12,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:09:12,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:09:12,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:09:12,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:09:12,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:09:12,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:09:12,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:09:12,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:09:12,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:09:12,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:09:12,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:09:12,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:09:12,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:09:12,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:09:12,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:09:12,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:09:12,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:09:12,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:09:12,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:09:12,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:09:12,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:09:12,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:09:12,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:09:12,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:09:12,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:09:12,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:09:12,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:09:12,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:09:12,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:09:12,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:09:12,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:09:12,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:09:12,824 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:09:12,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:09:12,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:09:12,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:09:12,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:09:12,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:09:12,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:09:12,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:09:12,827 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:09:12,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:09:12,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:09:12,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:09:12,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:09:12,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:09:12,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:09:12,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:09:12,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:09:12,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:09:12,830 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:09:12,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:09:12,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:09:12,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:09:12,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:09:12,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:09:12,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:09:12,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:09:12,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:09:12,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:09:12,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:09:12,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:09:12,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:09:12,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:09:12,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:09:12,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:09:12,834 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:09:12,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:09:12,834 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-11-25 18:09:13,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:09:13,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:09:13,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:09:13,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:09:13,192 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:09:13,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-25 18:09:16,381 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:09:16,685 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:09:16,686 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-25 18:09:16,704 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/data/2fa40bee5/72da0df41394478aa20bde9125a237be/FLAGfeb8da392 [2022-11-25 18:09:16,727 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/data/2fa40bee5/72da0df41394478aa20bde9125a237be [2022-11-25 18:09:16,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:09:16,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:09:16,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:09:16,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:09:16,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:09:16,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:09:16" (1/1) ... [2022-11-25 18:09:16,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bfb829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:16, skipping insertion in model container [2022-11-25 18:09:16,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:09:16" (1/1) ... [2022-11-25 18:09:16,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:09:16,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:09:17,310 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 18:09:17,310 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 18:09:17,311 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 18:09:17,311 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 18:09:17,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:09:17,354 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:09:17,395 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 18:09:17,396 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 18:09:17,396 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 18:09:17,396 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 18:09:17,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:09:17,493 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:09:17,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17 WrapperNode [2022-11-25 18:09:17,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:09:17,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:09:17,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:09:17,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:09:17,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,592 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 166 [2022-11-25 18:09:17,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:09:17,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:09:17,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:09:17,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:09:17,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:09:17,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:09:17,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:09:17,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:09:17,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (1/1) ... [2022-11-25 18:09:17,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:09:17,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:17,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:17,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:09:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-25 18:09:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-25 18:09:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:09:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 18:09:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:09:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:09:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:09:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 18:09:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:09:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:09:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 18:09:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:09:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:09:17,726 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:09:17,878 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:09:17,880 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:09:18,364 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:09:18,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:09:18,378 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 18:09:18,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:09:18 BoogieIcfgContainer [2022-11-25 18:09:18,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:09:18,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:09:18,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:09:18,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:09:18,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:09:16" (1/3) ... [2022-11-25 18:09:18,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56665d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:09:18, skipping insertion in model container [2022-11-25 18:09:18,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:17" (2/3) ... [2022-11-25 18:09:18,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56665d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:09:18, skipping insertion in model container [2022-11-25 18:09:18,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:09:18" (3/3) ... [2022-11-25 18:09:18,388 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-11-25 18:09:18,396 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:09:18,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:09:18,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 18:09:18,404 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:09:18,546 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:09:18,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 259 transitions, 528 flow [2022-11-25 18:09:18,686 INFO L130 PetriNetUnfolder]: 17/257 cut-off events. [2022-11-25 18:09:18,686 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:09:18,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 257 events. 17/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 580 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-11-25 18:09:18,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 259 transitions, 528 flow [2022-11-25 18:09:18,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 257 transitions, 520 flow [2022-11-25 18:09:18,708 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:09:18,724 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 257 transitions, 520 flow [2022-11-25 18:09:18,727 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 257 transitions, 520 flow [2022-11-25 18:09:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 257 transitions, 520 flow [2022-11-25 18:09:18,790 INFO L130 PetriNetUnfolder]: 17/257 cut-off events. [2022-11-25 18:09:18,791 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:09:18,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 257 events. 17/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 584 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-11-25 18:09:18,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 7600 [2022-11-25 18:09:57,740 WARN L233 SmtUtils]: Spent 14.85s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:10:06,690 WARN L233 SmtUtils]: Spent 8.95s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:10:23,872 WARN L233 SmtUtils]: Spent 17.18s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:10:32,178 WARN L233 SmtUtils]: Spent 8.30s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:10:49,792 WARN L233 SmtUtils]: Spent 17.53s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:10:58,066 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:11:14,725 WARN L233 SmtUtils]: Spent 16.66s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:11:23,298 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:11:23,543 INFO L134 LiptonReduction]: Checked pairs total: 7268 [2022-11-25 18:11:23,543 INFO L136 LiptonReduction]: Total number of compositions: 275 [2022-11-25 18:11:23,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:11:23,567 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;@62493ed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:11:23,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-25 18:11:23,572 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2022-11-25 18:11:23,572 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:11:23,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:23,573 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:11:23,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 863995, now seen corresponding path program 1 times [2022-11-25 18:11:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:23,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641469022] [2022-11-25 18:11:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:23,738 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:23,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102183032] [2022-11-25 18:11:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:23,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:23,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:23,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:23,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:11:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:11:23,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:23,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:23,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641469022] [2022-11-25 18:11:23,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:23,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102183032] [2022-11-25 18:11:23,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102183032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:23,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:23,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:11:23,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324453026] [2022-11-25 18:11:23,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:23,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:23,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:24,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 534 [2022-11-25 18:11:24,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:24,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:24,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 534 [2022-11-25 18:11:24,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:24,586 INFO L130 PetriNetUnfolder]: 436/710 cut-off events. [2022-11-25 18:11:24,587 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-25 18:11:24,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2758 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2022-11-25 18:11:24,598 INFO L137 encePairwiseOnDemand]: 525/534 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-25 18:11:24,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2022-11-25 18:11:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2022-11-25 18:11:24,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4818976279650437 [2022-11-25 18:11:24,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2022-11-25 18:11:24,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2022-11-25 18:11:24,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:24,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2022-11-25 18:11:24,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:24,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:24,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:24,649 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 772 transitions. [2022-11-25 18:11:24,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2022-11-25 18:11:24,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:24,655 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2022-11-25 18:11:24,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2022-11-25 18:11:24,661 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-11-25 18:11:24,661 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2022-11-25 18:11:24,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:24,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:24,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:11:24,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:24,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 18:11:24,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:24,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 864199, now seen corresponding path program 1 times [2022-11-25 18:11:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:24,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155609333] [2022-11-25 18:11:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:24,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:24,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:24,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937508079] [2022-11-25 18:11:24,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:24,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:24,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:24,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:24,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:11:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:25,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:11:25,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:25,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:25,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:25,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155609333] [2022-11-25 18:11:25,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:25,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937508079] [2022-11-25 18:11:25,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937508079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:25,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:25,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:11:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910053648] [2022-11-25 18:11:25,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:25,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:25,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:25,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 534 [2022-11-25 18:11:25,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:25,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 534 [2022-11-25 18:11:25,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:25,439 INFO L130 PetriNetUnfolder]: 435/708 cut-off events. [2022-11-25 18:11:25,440 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:11:25,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2733 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 707 conditions per place. [2022-11-25 18:11:25,445 INFO L137 encePairwiseOnDemand]: 532/534 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-11-25 18:11:25,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 180 flow [2022-11-25 18:11:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2022-11-25 18:11:25,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4794007490636704 [2022-11-25 18:11:25,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2022-11-25 18:11:25,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2022-11-25 18:11:25,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:25,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2022-11-25 18:11:25,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,459 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 768 transitions. [2022-11-25 18:11:25,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 180 flow [2022-11-25 18:11:25,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:25,461 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 103 flow [2022-11-25 18:11:25,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2022-11-25 18:11:25,462 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-11-25 18:11:25,462 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 103 flow [2022-11-25 18:11:25,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:25,463 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2022-11-25 18:11:25,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:25,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:25,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:25,669 INFO L85 PathProgramCache]: Analyzing trace with hash 830463691, now seen corresponding path program 1 times [2022-11-25 18:11:25,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:25,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885145228] [2022-11-25 18:11:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:25,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:25,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:25,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570170509] [2022-11-25 18:11:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:25,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:25,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:25,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:25,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:11:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:25,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:11:25,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:25,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:25,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885145228] [2022-11-25 18:11:25,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570170509] [2022-11-25 18:11:25,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570170509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:25,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:25,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:11:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295949917] [2022-11-25 18:11:25,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:25,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 534 [2022-11-25 18:11:25,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:25,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 534 [2022-11-25 18:11:25,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:26,226 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2022-11-25 18:11:26,226 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:11:26,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 712 events. 435/712 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2727 event pairs, 340 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1454. Up to 709 conditions per place. [2022-11-25 18:11:26,230 INFO L137 encePairwiseOnDemand]: 529/534 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-25 18:11:26,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 197 flow [2022-11-25 18:11:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2022-11-25 18:11:26,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4818976279650437 [2022-11-25 18:11:26,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2022-11-25 18:11:26,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2022-11-25 18:11:26,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:26,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2022-11-25 18:11:26,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:26,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:26,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:26,240 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 103 flow. Second operand 3 states and 772 transitions. [2022-11-25 18:11:26,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 197 flow [2022-11-25 18:11:26,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 197 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:11:26,241 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2022-11-25 18:11:26,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-11-25 18:11:26,242 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2022-11-25 18:11:26,242 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2022-11-25 18:11:26,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:26,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:26,243 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 18:11:26,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 18:11:26,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-25 18:11:26,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:26,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash -23726608, now seen corresponding path program 1 times [2022-11-25 18:11:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:26,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428609876] [2022-11-25 18:11:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:26,529 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:26,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550071288] [2022-11-25 18:11:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:26,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:26,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:26,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:26,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:11:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:11:26,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:26,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:26,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:26,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428609876] [2022-11-25 18:11:26,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:26,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550071288] [2022-11-25 18:11:26,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550071288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:26,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:26,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 18:11:26,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206439458] [2022-11-25 18:11:26,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:26,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 534 [2022-11-25 18:11:26,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:26,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:26,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 534 [2022-11-25 18:11:26,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:27,494 INFO L130 PetriNetUnfolder]: 437/724 cut-off events. [2022-11-25 18:11:27,495 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:11:27,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 724 events. 437/724 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2799 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1501. Up to 707 conditions per place. [2022-11-25 18:11:27,499 INFO L137 encePairwiseOnDemand]: 527/534 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2022-11-25 18:11:27,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 270 flow [2022-11-25 18:11:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:11:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:11:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1510 transitions. [2022-11-25 18:11:27,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4712858926342072 [2022-11-25 18:11:27,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1510 transitions. [2022-11-25 18:11:27,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1510 transitions. [2022-11-25 18:11:27,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:27,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1510 transitions. [2022-11-25 18:11:27,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:27,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:27,518 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:27,518 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 6 states and 1510 transitions. [2022-11-25 18:11:27,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 270 flow [2022-11-25 18:11:27,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:27,521 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2022-11-25 18:11:27,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2022-11-25 18:11:27,522 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2022-11-25 18:11:27,522 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2022-11-25 18:11:27,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:27,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:27,523 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-11-25 18:11:27,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:27,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:27,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:27,730 INFO L85 PathProgramCache]: Analyzing trace with hash -773914613, now seen corresponding path program 2 times [2022-11-25 18:11:27,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:27,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131300957] [2022-11-25 18:11:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:27,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:27,797 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:27,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481341260] [2022-11-25 18:11:27,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:27,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:27,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:27,799 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:27,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:11:28,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:11:28,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:28,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:11:28,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:11:28,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:28,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131300957] [2022-11-25 18:11:28,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481341260] [2022-11-25 18:11:28,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481341260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:28,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:28,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:11:28,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020770546] [2022-11-25 18:11:28,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:28,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:28,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:28,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:28,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 534 [2022-11-25 18:11:28,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:28,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:28,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 534 [2022-11-25 18:11:28,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:28,493 INFO L130 PetriNetUnfolder]: 437/722 cut-off events. [2022-11-25 18:11:28,494 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-25 18:11:28,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 722 events. 437/722 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2799 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1533. Up to 721 conditions per place. [2022-11-25 18:11:28,498 INFO L137 encePairwiseOnDemand]: 530/534 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-11-25 18:11:28,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 290 flow [2022-11-25 18:11:28,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 763 transitions. [2022-11-25 18:11:28,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4762796504369538 [2022-11-25 18:11:28,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 763 transitions. [2022-11-25 18:11:28,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 763 transitions. [2022-11-25 18:11:28,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:28,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 763 transitions. [2022-11-25 18:11:28,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:28,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:28,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:28,509 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 3 states and 763 transitions. [2022-11-25 18:11:28,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 290 flow [2022-11-25 18:11:28,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 279 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:28,512 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 202 flow [2022-11-25 18:11:28,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2022-11-25 18:11:28,514 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2022-11-25 18:11:28,514 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 202 flow [2022-11-25 18:11:28,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:28,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:28,515 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-11-25 18:11:28,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:28,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:28,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1778454410, now seen corresponding path program 3 times [2022-11-25 18:11:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:28,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605659002] [2022-11-25 18:11:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:28,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:28,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:28,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559841159] [2022-11-25 18:11:28,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:11:28,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:28,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:28,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:28,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:11:29,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:11:29,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:29,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:11:29,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:11:29,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:29,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605659002] [2022-11-25 18:11:29,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:29,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559841159] [2022-11-25 18:11:29,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559841159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:29,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:29,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-25 18:11:29,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905575621] [2022-11-25 18:11:29,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:29,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:29,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:29,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:29,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:29,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 534 [2022-11-25 18:11:29,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:29,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:29,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 534 [2022-11-25 18:11:29,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:30,449 INFO L130 PetriNetUnfolder]: 436/719 cut-off events. [2022-11-25 18:11:30,449 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-25 18:11:30,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 719 events. 436/719 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2766 event pairs, 340 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1520. Up to 707 conditions per place. [2022-11-25 18:11:30,453 INFO L137 encePairwiseOnDemand]: 526/534 looper letters, 33 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2022-11-25 18:11:30,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 302 flow [2022-11-25 18:11:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:11:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:11:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1463 transitions. [2022-11-25 18:11:30,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4566167290886392 [2022-11-25 18:11:30,458 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1463 transitions. [2022-11-25 18:11:30,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1463 transitions. [2022-11-25 18:11:30,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:30,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1463 transitions. [2022-11-25 18:11:30,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.83333333333334) internal successors, (1463), 6 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:30,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:30,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:30,468 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 202 flow. Second operand 6 states and 1463 transitions. [2022-11-25 18:11:30,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 46 transitions, 302 flow [2022-11-25 18:11:30,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 46 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:30,471 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 227 flow [2022-11-25 18:11:30,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2022-11-25 18:11:30,472 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2022-11-25 18:11:30,473 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 227 flow [2022-11-25 18:11:30,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:30,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:30,474 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-11-25 18:11:30,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:30,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 18:11:30,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1778454301, now seen corresponding path program 1 times [2022-11-25 18:11:30,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:30,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515574403] [2022-11-25 18:11:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:30,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:30,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:30,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418941924] [2022-11-25 18:11:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:30,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:30,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:30,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:30,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:11:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:31,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:11:31,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:11:31,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:11:31,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:31,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515574403] [2022-11-25 18:11:31,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:31,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418941924] [2022-11-25 18:11:31,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418941924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:31,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:31,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-25 18:11:31,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140037408] [2022-11-25 18:11:31,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:31,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:11:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:11:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:11:31,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 534 [2022-11-25 18:11:31,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 227 flow. Second operand has 12 states, 12 states have (on average 243.33333333333334) internal successors, (2920), 12 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:31,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:31,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 534 [2022-11-25 18:11:31,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:32,742 INFO L130 PetriNetUnfolder]: 437/743 cut-off events. [2022-11-25 18:11:32,742 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2022-11-25 18:11:32,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 743 events. 437/743 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2996 event pairs, 340 based on Foata normal form. 12/477 useless extension candidates. Maximal degree in co-relation 1651. Up to 707 conditions per place. [2022-11-25 18:11:32,747 INFO L137 encePairwiseOnDemand]: 527/534 looper letters, 50 selfloop transitions, 14 changer transitions 0/64 dead transitions. [2022-11-25 18:11:32,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 509 flow [2022-11-25 18:11:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:11:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:11:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2984 transitions. [2022-11-25 18:11:32,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4656679151061174 [2022-11-25 18:11:32,756 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2984 transitions. [2022-11-25 18:11:32,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2984 transitions. [2022-11-25 18:11:32,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:32,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2984 transitions. [2022-11-25 18:11:32,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 248.66666666666666) internal successors, (2984), 12 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 534.0) internal successors, (6942), 13 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,777 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 534.0) internal successors, (6942), 13 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,777 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 227 flow. Second operand 12 states and 2984 transitions. [2022-11-25 18:11:32,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 509 flow [2022-11-25 18:11:32,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 445 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-11-25 18:11:32,786 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 333 flow [2022-11-25 18:11:32,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=333, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2022-11-25 18:11:32,787 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2022-11-25 18:11:32,787 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 333 flow [2022-11-25 18:11:32,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 243.33333333333334) internal successors, (2920), 12 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:32,789 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2022-11-25 18:11:32,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:33,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:33,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1481180477, now seen corresponding path program 2 times [2022-11-25 18:11:33,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:33,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437054602] [2022-11-25 18:11:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:33,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:33,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:33,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954962926] [2022-11-25 18:11:33,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:33,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:33,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:33,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:33,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:11:34,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:11:34,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:34,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:11:34,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:11:34,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:11:34,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:34,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437054602] [2022-11-25 18:11:34,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:34,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954962926] [2022-11-25 18:11:34,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954962926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:34,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:34,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-25 18:11:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536824579] [2022-11-25 18:11:34,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:34,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:11:34,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:34,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:11:34,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:11:34,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 534 [2022-11-25 18:11:34,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 333 flow. Second operand has 24 states, 24 states have (on average 243.16666666666666) internal successors, (5836), 24 states have internal predecessors, (5836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:34,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:34,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 534 [2022-11-25 18:11:34,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:37,380 INFO L130 PetriNetUnfolder]: 437/791 cut-off events. [2022-11-25 18:11:37,380 INFO L131 PetriNetUnfolder]: For 1121/1121 co-relation queries the response was YES. [2022-11-25 18:11:37,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 791 events. 437/791 cut-off events. For 1121/1121 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3177 event pairs, 340 based on Foata normal form. 24/537 useless extension candidates. Maximal degree in co-relation 1942. Up to 707 conditions per place. [2022-11-25 18:11:37,385 INFO L137 encePairwiseOnDemand]: 527/534 looper letters, 74 selfloop transitions, 26 changer transitions 0/100 dead transitions. [2022-11-25 18:11:37,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 1010 flow [2022-11-25 18:11:37,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 18:11:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-25 18:11:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5942 transitions. [2022-11-25 18:11:37,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46363920099875156 [2022-11-25 18:11:37,400 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5942 transitions. [2022-11-25 18:11:37,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5942 transitions. [2022-11-25 18:11:37,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:37,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5942 transitions. [2022-11-25 18:11:37,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 247.58333333333334) internal successors, (5942), 24 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:37,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 534.0) internal successors, (13350), 25 states have internal predecessors, (13350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:37,437 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 534.0) internal successors, (13350), 25 states have internal predecessors, (13350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:37,437 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 333 flow. Second operand 24 states and 5942 transitions. [2022-11-25 18:11:37,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 1010 flow [2022-11-25 18:11:37,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 100 transitions, 963 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-11-25 18:11:37,444 INFO L231 Difference]: Finished difference. Result has 102 places, 67 transitions, 590 flow [2022-11-25 18:11:37,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=590, PETRI_PLACES=102, PETRI_TRANSITIONS=67} [2022-11-25 18:11:37,445 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2022-11-25 18:11:37,445 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 67 transitions, 590 flow [2022-11-25 18:11:37,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 243.16666666666666) internal successors, (5836), 24 states have internal predecessors, (5836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:37,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:37,447 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2022-11-25 18:11:37,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:37,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:37,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2089834115, now seen corresponding path program 3 times [2022-11-25 18:11:37,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:37,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748063456] [2022-11-25 18:11:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:37,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:37,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:37,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95153638] [2022-11-25 18:11:37,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:11:37,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:37,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:37,958 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:37,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:11:39,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:11:39,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:39,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:11:39,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-25 18:11:39,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:39,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:39,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748063456] [2022-11-25 18:11:39,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:39,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95153638] [2022-11-25 18:11:39,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95153638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:39,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:39,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:11:39,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199243164] [2022-11-25 18:11:39,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:39,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:39,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:39,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 534 [2022-11-25 18:11:39,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 67 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:39,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 534 [2022-11-25 18:11:39,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:39,881 INFO L130 PetriNetUnfolder]: 435/748 cut-off events. [2022-11-25 18:11:39,881 INFO L131 PetriNetUnfolder]: For 778/778 co-relation queries the response was YES. [2022-11-25 18:11:39,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1781 conditions, 748 events. 435/748 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2861 event pairs, 340 based on Foata normal form. 41/513 useless extension candidates. Maximal degree in co-relation 1739. Up to 699 conditions per place. [2022-11-25 18:11:39,889 INFO L137 encePairwiseOnDemand]: 526/534 looper letters, 75 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2022-11-25 18:11:39,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 80 transitions, 786 flow [2022-11-25 18:11:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:11:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:11:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1469 transitions. [2022-11-25 18:11:39,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4584893882646692 [2022-11-25 18:11:39,894 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1469 transitions. [2022-11-25 18:11:39,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1469 transitions. [2022-11-25 18:11:39,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:39,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1469 transitions. [2022-11-25 18:11:39,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,905 INFO L175 Difference]: Start difference. First operand has 102 places, 67 transitions, 590 flow. Second operand 6 states and 1469 transitions. [2022-11-25 18:11:39,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 80 transitions, 786 flow [2022-11-25 18:11:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 506 flow, removed 104 selfloop flow, removed 18 redundant places. [2022-11-25 18:11:39,913 INFO L231 Difference]: Finished difference. Result has 86 places, 58 transitions, 275 flow [2022-11-25 18:11:39,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2022-11-25 18:11:39,914 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2022-11-25 18:11:39,914 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 275 flow [2022-11-25 18:11:39,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:39,915 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:39,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:40,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1998151627, now seen corresponding path program 1 times [2022-11-25 18:11:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:40,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824873304] [2022-11-25 18:11:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:40,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:40,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639689409] [2022-11-25 18:11:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:40,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:40,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:40,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:40,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:11:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:42,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 5295 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 18:11:42,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:42,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:43,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:43,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824873304] [2022-11-25 18:11:43,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:43,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639689409] [2022-11-25 18:11:43,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639689409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:43,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:43,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-25 18:11:43,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542015971] [2022-11-25 18:11:43,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:43,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 18:11:43,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 18:11:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-25 18:11:43,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 534 [2022-11-25 18:11:43,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 275 flow. Second operand has 32 states, 32 states have (on average 243.25) internal successors, (7784), 32 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:43,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:43,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 534 [2022-11-25 18:11:43,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:46,736 INFO L130 PetriNetUnfolder]: 435/764 cut-off events. [2022-11-25 18:11:46,736 INFO L131 PetriNetUnfolder]: For 3830/3830 co-relation queries the response was YES. [2022-11-25 18:11:46,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1709 conditions, 764 events. 435/764 cut-off events. For 3830/3830 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2861 event pairs, 340 based on Foata normal form. 16/504 useless extension candidates. Maximal degree in co-relation 1673. Up to 705 conditions per place. [2022-11-25 18:11:46,742 INFO L137 encePairwiseOnDemand]: 531/534 looper letters, 33 selfloop transitions, 33 changer transitions 0/66 dead transitions. [2022-11-25 18:11:46,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 66 transitions, 455 flow [2022-11-25 18:11:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 18:11:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-25 18:11:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7815 transitions. [2022-11-25 18:11:46,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4573384831460674 [2022-11-25 18:11:46,760 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7815 transitions. [2022-11-25 18:11:46,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7815 transitions. [2022-11-25 18:11:46,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:46,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7815 transitions. [2022-11-25 18:11:46,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 244.21875) internal successors, (7815), 32 states have internal predecessors, (7815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:46,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 534.0) internal successors, (17622), 33 states have internal predecessors, (17622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:46,816 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 534.0) internal successors, (17622), 33 states have internal predecessors, (17622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:46,816 INFO L175 Difference]: Start difference. First operand has 86 places, 58 transitions, 275 flow. Second operand 32 states and 7815 transitions. [2022-11-25 18:11:46,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 66 transitions, 455 flow [2022-11-25 18:11:46,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 66 transitions, 447 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-25 18:11:46,825 INFO L231 Difference]: Finished difference. Result has 122 places, 66 transitions, 431 flow [2022-11-25 18:11:46,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=431, PETRI_PLACES=122, PETRI_TRANSITIONS=66} [2022-11-25 18:11:46,828 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2022-11-25 18:11:46,829 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 66 transitions, 431 flow [2022-11-25 18:11:46,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 243.25) internal successors, (7784), 32 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:46,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:46,832 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:46,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:47,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:47,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:47,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1410605749, now seen corresponding path program 2 times [2022-11-25 18:11:47,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:47,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083113733] [2022-11-25 18:11:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:47,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:47,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117095358] [2022-11-25 18:11:47,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:47,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:47,449 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:47,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 18:11:49,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:11:49,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:49,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:49,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-25 18:11:49,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:49,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:49,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083113733] [2022-11-25 18:11:49,234 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:49,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117095358] [2022-11-25 18:11:49,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117095358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:49,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:49,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:11:49,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280257889] [2022-11-25 18:11:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:49,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:49,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 534 [2022-11-25 18:11:49,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 66 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:49,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 534 [2022-11-25 18:11:49,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:49,644 INFO L130 PetriNetUnfolder]: 398/703 cut-off events. [2022-11-25 18:11:49,645 INFO L131 PetriNetUnfolder]: For 717/717 co-relation queries the response was YES. [2022-11-25 18:11:49,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 703 events. 398/703 cut-off events. For 717/717 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2934 event pairs, 10 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 1642. Up to 597 conditions per place. [2022-11-25 18:11:49,650 INFO L137 encePairwiseOnDemand]: 532/534 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2022-11-25 18:11:49,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 80 transitions, 621 flow [2022-11-25 18:11:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2022-11-25 18:11:49,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4868913857677903 [2022-11-25 18:11:49,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2022-11-25 18:11:49,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2022-11-25 18:11:49,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:49,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2022-11-25 18:11:49,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,664 INFO L175 Difference]: Start difference. First operand has 122 places, 66 transitions, 431 flow. Second operand 3 states and 780 transitions. [2022-11-25 18:11:49,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 80 transitions, 621 flow [2022-11-25 18:11:49,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 80 transitions, 521 flow, removed 25 selfloop flow, removed 23 redundant places. [2022-11-25 18:11:49,672 INFO L231 Difference]: Finished difference. Result has 100 places, 65 transitions, 331 flow [2022-11-25 18:11:49,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=100, PETRI_TRANSITIONS=65} [2022-11-25 18:11:49,673 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 60 predicate places. [2022-11-25 18:11:49,673 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 65 transitions, 331 flow [2022-11-25 18:11:49,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:49,674 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:49,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:49,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:49,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:49,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:49,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1410605775, now seen corresponding path program 1 times [2022-11-25 18:11:49,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:49,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318206953] [2022-11-25 18:11:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:49,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:50,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:50,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182399171] [2022-11-25 18:11:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:50,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:50,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:50,245 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:50,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 18:11:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:53,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 7167 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:11:53,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 18:11:53,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 18:11:53,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:53,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318206953] [2022-11-25 18:11:53,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:11:53,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182399171] [2022-11-25 18:11:53,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182399171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:53,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:53,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-25 18:11:53,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186128226] [2022-11-25 18:11:53,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:53,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:53,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 534 [2022-11-25 18:11:53,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 65 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:53,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:53,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 534 [2022-11-25 18:11:53,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:54,964 INFO L130 PetriNetUnfolder]: 400/770 cut-off events. [2022-11-25 18:11:54,965 INFO L131 PetriNetUnfolder]: For 1658/1658 co-relation queries the response was YES. [2022-11-25 18:11:54,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 770 events. 400/770 cut-off events. For 1658/1658 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2414 event pairs, 307 based on Foata normal form. 3/533 useless extension candidates. Maximal degree in co-relation 1831. Up to 638 conditions per place. [2022-11-25 18:11:54,971 INFO L137 encePairwiseOnDemand]: 530/534 looper letters, 156 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2022-11-25 18:11:54,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 162 transitions, 1160 flow [2022-11-25 18:11:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:11:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:11:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1497 transitions. [2022-11-25 18:11:54,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46722846441947563 [2022-11-25 18:11:54,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1497 transitions. [2022-11-25 18:11:54,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1497 transitions. [2022-11-25 18:11:54,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:54,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1497 transitions. [2022-11-25 18:11:54,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,988 INFO L175 Difference]: Start difference. First operand has 100 places, 65 transitions, 331 flow. Second operand 6 states and 1497 transitions. [2022-11-25 18:11:54,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 162 transitions, 1160 flow [2022-11-25 18:11:54,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 1159 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:54,998 INFO L231 Difference]: Finished difference. Result has 108 places, 68 transitions, 486 flow [2022-11-25 18:11:54,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=486, PETRI_PLACES=108, PETRI_TRANSITIONS=68} [2022-11-25 18:11:55,001 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2022-11-25 18:11:55,002 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 68 transitions, 486 flow [2022-11-25 18:11:55,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:55,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:55,003 INFO L209 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:55,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:55,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 18:11:55,230 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:11:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:55,230 INFO L85 PathProgramCache]: Analyzing trace with hash 117347493, now seen corresponding path program 1 times [2022-11-25 18:11:55,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:55,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884895529] [2022-11-25 18:11:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:55,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:56,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:11:56,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533006569] [2022-11-25 18:11:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:56,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:56,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:56,700 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:56,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 18:12:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:06,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 28342 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:12:06,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-11-25 18:12:06,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:12:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-11-25 18:12:06,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:06,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884895529] [2022-11-25 18:12:06,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:12:06,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533006569] [2022-11-25 18:12:06,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533006569] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:12:06,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:12:06,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-25 18:12:06,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178936793] [2022-11-25 18:12:06,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:12:06,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:12:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:12:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:12:06,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 534 [2022-11-25 18:12:06,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 68 transitions, 486 flow. Second operand has 12 states, 12 states have (on average 244.75) internal successors, (2937), 12 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:06,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:12:06,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 534 [2022-11-25 18:12:06,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:12:08,218 INFO L130 PetriNetUnfolder]: 406/968 cut-off events. [2022-11-25 18:12:08,218 INFO L131 PetriNetUnfolder]: For 4700/4700 co-relation queries the response was YES. [2022-11-25 18:12:08,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 968 events. 406/968 cut-off events. For 4700/4700 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2421 event pairs, 307 based on Foata normal form. 6/734 useless extension candidates. Maximal degree in co-relation 2638. Up to 638 conditions per place. [2022-11-25 18:12:08,225 INFO L137 encePairwiseOnDemand]: 530/534 looper letters, 348 selfloop transitions, 12 changer transitions 0/360 dead transitions. [2022-11-25 18:12:08,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 360 transitions, 2777 flow [2022-11-25 18:12:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:12:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:12:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2970 transitions. [2022-11-25 18:12:08,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46348314606741575 [2022-11-25 18:12:08,230 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2970 transitions. [2022-11-25 18:12:08,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2970 transitions. [2022-11-25 18:12:08,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:12:08,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2970 transitions. [2022-11-25 18:12:08,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 247.5) internal successors, (2970), 12 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:08,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 534.0) internal successors, (6942), 13 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:08,244 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 534.0) internal successors, (6942), 13 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:08,245 INFO L175 Difference]: Start difference. First operand has 108 places, 68 transitions, 486 flow. Second operand 12 states and 2970 transitions. [2022-11-25 18:12:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 360 transitions, 2777 flow [2022-11-25 18:12:08,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 360 transitions, 2775 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:12:08,258 INFO L231 Difference]: Finished difference. Result has 125 places, 75 transitions, 928 flow [2022-11-25 18:12:08,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=928, PETRI_PLACES=125, PETRI_TRANSITIONS=75} [2022-11-25 18:12:08,259 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 85 predicate places. [2022-11-25 18:12:08,259 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 75 transitions, 928 flow [2022-11-25 18:12:08,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 244.75) internal successors, (2937), 12 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:08,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:12:08,261 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:08,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:08,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:12:08,488 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 18:12:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash -163122121, now seen corresponding path program 2 times [2022-11-25 18:12:08,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:08,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915071626] [2022-11-25 18:12:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:11,967 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:12:11,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577417471] [2022-11-25 18:12:11,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:12:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:12:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:12:11,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:12:11,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c51fe9d-6f78-498f-a8d7-4f6cf51e36e2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process