./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:52:56,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:52:56,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:52:56,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:52:56,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:52:56,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:52:56,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:52:56,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:52:56,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:52:56,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:52:56,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:52:56,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:52:56,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:52:56,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:52:56,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:52:56,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:52:56,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:52:56,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:52:56,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:52:56,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:52:56,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:52:56,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:52:56,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:52:56,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:52:56,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:52:56,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:52:56,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:52:56,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:52:56,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:52:56,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:52:56,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:52:56,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:52:56,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:52:56,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:52:56,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:52:56,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:52:56,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:52:56,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:52:56,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:52:56,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:52:56,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:52:56,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:52:56,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:52:56,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:52:56,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:52:56,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:52:56,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:52:56,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:52:56,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:52:56,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:52:56,830 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:52:56,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:52:56,831 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:52:56,831 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:52:56,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:52:56,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:52:56,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:52:56,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:52:56,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:52:56,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:52:56,833 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:52:56,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:52:56,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:52:56,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:52:56,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:52:56,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:52:56,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:52:56,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:52:56,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:52:56,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:52:56,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:52:56,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:52:56,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:52:56,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:52:56,838 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:52:56,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:52:56,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:52:56,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-11-16 11:52:57,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:52:57,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:52:57,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:52:57,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:52:57,226 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:52:57,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-16 11:52:57,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/data/f0fb6d9c8/18eaa20ecfd446c08cb3bce08e9f462c/FLAGfe6ba7720 [2022-11-16 11:52:58,130 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:52:58,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-16 11:52:58,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/data/f0fb6d9c8/18eaa20ecfd446c08cb3bce08e9f462c/FLAGfe6ba7720 [2022-11-16 11:52:58,272 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/data/f0fb6d9c8/18eaa20ecfd446c08cb3bce08e9f462c [2022-11-16 11:52:58,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:52:58,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:52:58,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:52:58,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:52:58,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:52:58,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:52:58" (1/1) ... [2022-11-16 11:52:58,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4b7d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:58, skipping insertion in model container [2022-11-16 11:52:58,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:52:58" (1/1) ... [2022-11-16 11:52:58,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:52:58,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:52:59,076 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-16 11:52:59,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:52:59,139 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:52:59,210 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-16 11:52:59,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:52:59,324 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:52:59,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59 WrapperNode [2022-11-16 11:52:59,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:52:59,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:52:59,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:52:59,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:52:59,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,422 INFO L138 Inliner]: procedures = 270, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2022-11-16 11:52:59,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:52:59,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:52:59,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:52:59,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:52:59,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:52:59,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:52:59,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:52:59,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:52:59,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (1/1) ... [2022-11-16 11:52:59,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:52:59,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:59,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:52:59,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:52:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:52:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:52:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:52:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:52:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:52:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:52:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:52:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:52:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:52:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:52:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:52:59,607 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:52:59,825 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:52:59,827 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:53:00,257 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:53:00,267 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:53:00,267 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 11:53:00,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:00 BoogieIcfgContainer [2022-11-16 11:53:00,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:53:00,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:53:00,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:53:00,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:53:00,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:52:58" (1/3) ... [2022-11-16 11:53:00,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e077e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:00, skipping insertion in model container [2022-11-16 11:53:00,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:59" (2/3) ... [2022-11-16 11:53:00,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e077e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:00, skipping insertion in model container [2022-11-16 11:53:00,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:00" (3/3) ... [2022-11-16 11:53:00,284 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-11-16 11:53:00,295 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:53:00,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:53:00,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 11:53:00,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:53:00,467 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:53:00,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 148 transitions, 304 flow [2022-11-16 11:53:00,615 INFO L130 PetriNetUnfolder]: 23/196 cut-off events. [2022-11-16 11:53:00,616 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:53:00,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 196 events. 23/196 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 463 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2022-11-16 11:53:00,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 148 transitions, 304 flow [2022-11-16 11:53:00,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 145 transitions, 298 flow [2022-11-16 11:53:00,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:53:00,650 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;@4c5ae611, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:53:00,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-16 11:53:00,668 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-16 11:53:00,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:53:00,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:00,669 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:00,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:53:00,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:00,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2031399431, now seen corresponding path program 1 times [2022-11-16 11:53:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:00,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026817364] [2022-11-16 11:53:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:01,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:01,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026817364] [2022-11-16 11:53:01,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026817364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:01,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:01,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:53:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490717480] [2022-11-16 11:53:01,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:01,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:53:01,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:01,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:53:01,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:53:01,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 148 [2022-11-16 11:53:01,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 145 transitions, 298 flow. Second operand has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:01,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 148 [2022-11-16 11:53:01,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:01,229 INFO L130 PetriNetUnfolder]: 6/175 cut-off events. [2022-11-16 11:53:01,230 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 11:53:01,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 175 events. 6/175 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 369 event pairs, 0 based on Foata normal form. 16/168 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-11-16 11:53:01,236 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 2 selfloop transitions, 0 changer transitions 0/133 dead transitions. [2022-11-16 11:53:01,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 278 flow [2022-11-16 11:53:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:53:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:53:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2022-11-16 11:53:01,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9493243243243243 [2022-11-16 11:53:01,268 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 281 transitions. [2022-11-16 11:53:01,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 281 transitions. [2022-11-16 11:53:01,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:01,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 281 transitions. [2022-11-16 11:53:01,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,295 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,298 INFO L175 Difference]: Start difference. First operand has 134 places, 145 transitions, 298 flow. Second operand 2 states and 281 transitions. [2022-11-16 11:53:01,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 278 flow [2022-11-16 11:53:01,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:01,312 INFO L231 Difference]: Finished difference. Result has 134 places, 133 transitions, 274 flow [2022-11-16 11:53:01,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=274, PETRI_PLACES=134, PETRI_TRANSITIONS=133} [2022-11-16 11:53:01,321 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 0 predicate places. [2022-11-16 11:53:01,322 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 133 transitions, 274 flow [2022-11-16 11:53:01,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:01,324 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:01,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:53:01,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:53:01,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2030475910, now seen corresponding path program 1 times [2022-11-16 11:53:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:01,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519808760] [2022-11-16 11:53:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:01,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519808760] [2022-11-16 11:53:01,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519808760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:01,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:01,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:01,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893606156] [2022-11-16 11:53:01,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:01,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:01,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:01,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:01,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:01,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 148 [2022-11-16 11:53:01,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:01,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 148 [2022-11-16 11:53:01,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:01,581 INFO L130 PetriNetUnfolder]: 3/137 cut-off events. [2022-11-16 11:53:01,582 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-16 11:53:01,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 137 events. 3/137 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 179 event pairs, 0 based on Foata normal form. 1/123 useless extension candidates. Maximal degree in co-relation 152. Up to 7 conditions per place. [2022-11-16 11:53:01,584 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 9 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-11-16 11:53:01,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 300 flow [2022-11-16 11:53:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-11-16 11:53:01,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8851351351351351 [2022-11-16 11:53:01,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-11-16 11:53:01,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-11-16 11:53:01,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:01,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-11-16 11:53:01,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,593 INFO L175 Difference]: Start difference. First operand has 134 places, 133 transitions, 274 flow. Second operand 3 states and 393 transitions. [2022-11-16 11:53:01,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 135 transitions, 300 flow [2022-11-16 11:53:01,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:01,599 INFO L231 Difference]: Finished difference. Result has 137 places, 133 transitions, 282 flow [2022-11-16 11:53:01,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=137, PETRI_TRANSITIONS=133} [2022-11-16 11:53:01,601 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2022-11-16 11:53:01,601 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 133 transitions, 282 flow [2022-11-16 11:53:01,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:01,602 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:01,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:53:01,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:53:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -857939381, now seen corresponding path program 1 times [2022-11-16 11:53:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:01,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455990061] [2022-11-16 11:53:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:01,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:01,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455990061] [2022-11-16 11:53:01,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455990061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:01,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:01,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682355183] [2022-11-16 11:53:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:01,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:01,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:01,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:01,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 148 [2022-11-16 11:53:01,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 133 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:01,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 148 [2022-11-16 11:53:01,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:01,846 INFO L130 PetriNetUnfolder]: 3/135 cut-off events. [2022-11-16 11:53:01,846 INFO L131 PetriNetUnfolder]: For 6/15 co-relation queries the response was YES. [2022-11-16 11:53:01,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 135 events. 3/135 cut-off events. For 6/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 157. Up to 7 conditions per place. [2022-11-16 11:53:01,848 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 10 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2022-11-16 11:53:01,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 133 transitions, 310 flow [2022-11-16 11:53:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2022-11-16 11:53:01,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.845945945945946 [2022-11-16 11:53:01,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 626 transitions. [2022-11-16 11:53:01,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 626 transitions. [2022-11-16 11:53:01,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:01,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 626 transitions. [2022-11-16 11:53:01,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,859 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,859 INFO L175 Difference]: Start difference. First operand has 137 places, 133 transitions, 282 flow. Second operand 5 states and 626 transitions. [2022-11-16 11:53:01,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 133 transitions, 310 flow [2022-11-16 11:53:01,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:01,864 INFO L231 Difference]: Finished difference. Result has 137 places, 131 transitions, 282 flow [2022-11-16 11:53:01,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=137, PETRI_TRANSITIONS=131} [2022-11-16 11:53:01,866 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2022-11-16 11:53:01,866 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 131 transitions, 282 flow [2022-11-16 11:53:01,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:01,867 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:01,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:53:01,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:53:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash -956518567, now seen corresponding path program 1 times [2022-11-16 11:53:01,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:01,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670837369] [2022-11-16 11:53:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:01,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:02,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:02,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670837369] [2022-11-16 11:53:02,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670837369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:02,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:02,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:02,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499201838] [2022-11-16 11:53:02,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:02,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:02,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:02,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 148 [2022-11-16 11:53:02,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 131 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:02,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 148 [2022-11-16 11:53:02,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:02,140 INFO L130 PetriNetUnfolder]: 12/180 cut-off events. [2022-11-16 11:53:02,141 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-16 11:53:02,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 180 events. 12/180 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 417 event pairs, 2 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 217. Up to 12 conditions per place. [2022-11-16 11:53:02,143 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 10 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2022-11-16 11:53:02,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 312 flow [2022-11-16 11:53:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2022-11-16 11:53:02,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8527027027027027 [2022-11-16 11:53:02,147 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2022-11-16 11:53:02,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2022-11-16 11:53:02,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:02,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2022-11-16 11:53:02,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,154 INFO L175 Difference]: Start difference. First operand has 137 places, 131 transitions, 282 flow. Second operand 5 states and 631 transitions. [2022-11-16 11:53:02,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 312 flow [2022-11-16 11:53:02,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 132 transitions, 304 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:53:02,159 INFO L231 Difference]: Finished difference. Result has 135 places, 129 transitions, 278 flow [2022-11-16 11:53:02,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=135, PETRI_TRANSITIONS=129} [2022-11-16 11:53:02,160 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 1 predicate places. [2022-11-16 11:53:02,161 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 129 transitions, 278 flow [2022-11-16 11:53:02,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:02,162 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:02,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:53:02,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:53:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1928476342, now seen corresponding path program 1 times [2022-11-16 11:53:02,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:02,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498208547] [2022-11-16 11:53:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:02,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:53:02,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:53:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:53:02,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:53:02,242 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:53:02,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-16 11:53:02,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-11-16 11:53:02,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-11-16 11:53:02,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-11-16 11:53:02,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-11-16 11:53:02,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-11-16 11:53:02,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-11-16 11:53:02,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-11-16 11:53:02,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-11-16 11:53:02,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-11-16 11:53:02,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-11-16 11:53:02,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-11-16 11:53:02,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-11-16 11:53:02,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-11-16 11:53:02,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-11-16 11:53:02,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:53:02,251 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:53:02,254 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:53:02,255 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:53:02,288 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:53:02,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 186 transitions, 390 flow [2022-11-16 11:53:02,352 INFO L130 PetriNetUnfolder]: 40/319 cut-off events. [2022-11-16 11:53:02,352 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:53:02,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 40/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 955 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 198. Up to 9 conditions per place. [2022-11-16 11:53:02,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 186 transitions, 390 flow [2022-11-16 11:53:02,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 186 transitions, 390 flow [2022-11-16 11:53:02,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:53:02,378 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;@4c5ae611, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:53:02,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 11:53:02,391 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-16 11:53:02,393 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:53:02,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:02,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:02,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash 772219059, now seen corresponding path program 1 times [2022-11-16 11:53:02,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:02,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70508667] [2022-11-16 11:53:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:02,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70508667] [2022-11-16 11:53:02,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70508667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:02,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:02,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:53:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809100862] [2022-11-16 11:53:02,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:02,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:53:02,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:02,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:53:02,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:53:02,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 186 [2022-11-16 11:53:02,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 186 transitions, 390 flow. Second operand has 2 states, 2 states have (on average 164.5) internal successors, (329), 2 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:02,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 186 [2022-11-16 11:53:02,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:02,577 INFO L130 PetriNetUnfolder]: 12/288 cut-off events. [2022-11-16 11:53:02,578 INFO L131 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-11-16 11:53:02,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 288 events. 12/288 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 829 event pairs, 0 based on Foata normal form. 42/287 useless extension candidates. Maximal degree in co-relation 182. Up to 7 conditions per place. [2022-11-16 11:53:02,582 INFO L137 encePairwiseOnDemand]: 169/186 looper letters, 4 selfloop transitions, 0 changer transitions 0/168 dead transitions. [2022-11-16 11:53:02,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 168 transitions, 362 flow [2022-11-16 11:53:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:53:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:53:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 349 transitions. [2022-11-16 11:53:02,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9381720430107527 [2022-11-16 11:53:02,585 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 349 transitions. [2022-11-16 11:53:02,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 349 transitions. [2022-11-16 11:53:02,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:02,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 349 transitions. [2022-11-16 11:53:02,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,591 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,591 INFO L175 Difference]: Start difference. First operand has 169 places, 186 transitions, 390 flow. Second operand 2 states and 349 transitions. [2022-11-16 11:53:02,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 168 transitions, 362 flow [2022-11-16 11:53:02,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:02,597 INFO L231 Difference]: Finished difference. Result has 169 places, 168 transitions, 354 flow [2022-11-16 11:53:02,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=354, PETRI_PLACES=169, PETRI_TRANSITIONS=168} [2022-11-16 11:53:02,602 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2022-11-16 11:53:02,603 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 168 transitions, 354 flow [2022-11-16 11:53:02,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 164.5) internal successors, (329), 2 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:02,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:02,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:53:02,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash 773142580, now seen corresponding path program 1 times [2022-11-16 11:53:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:02,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698083731] [2022-11-16 11:53:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:02,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698083731] [2022-11-16 11:53:02,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698083731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:02,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:02,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:02,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349020492] [2022-11-16 11:53:02,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:02,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:02,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:02,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:02,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2022-11-16 11:53:02,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 168 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:02,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2022-11-16 11:53:02,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:02,793 INFO L130 PetriNetUnfolder]: 8/259 cut-off events. [2022-11-16 11:53:02,793 INFO L131 PetriNetUnfolder]: For 14/33 co-relation queries the response was YES. [2022-11-16 11:53:02,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 259 events. 8/259 cut-off events. For 14/33 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 673 event pairs, 0 based on Foata normal form. 1/224 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2022-11-16 11:53:02,799 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 13 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2022-11-16 11:53:02,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 172 transitions, 392 flow [2022-11-16 11:53:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2022-11-16 11:53:02,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8727598566308243 [2022-11-16 11:53:02,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2022-11-16 11:53:02,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2022-11-16 11:53:02,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:02,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2022-11-16 11:53:02,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,811 INFO L175 Difference]: Start difference. First operand has 169 places, 168 transitions, 354 flow. Second operand 3 states and 487 transitions. [2022-11-16 11:53:02,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 172 transitions, 392 flow [2022-11-16 11:53:02,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 172 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:02,818 INFO L231 Difference]: Finished difference. Result has 172 places, 169 transitions, 366 flow [2022-11-16 11:53:02,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=172, PETRI_TRANSITIONS=169} [2022-11-16 11:53:02,820 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 3 predicate places. [2022-11-16 11:53:02,820 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 169 transitions, 366 flow [2022-11-16 11:53:02,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:02,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:02,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:53:02,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash 172979369, now seen corresponding path program 1 times [2022-11-16 11:53:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:02,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705613358] [2022-11-16 11:53:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:02,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:02,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:02,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705613358] [2022-11-16 11:53:02,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705613358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:02,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:02,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253354864] [2022-11-16 11:53:02,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:02,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:02,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:02,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:02,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2022-11-16 11:53:02,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 169 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:02,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2022-11-16 11:53:02,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:03,022 INFO L130 PetriNetUnfolder]: 8/257 cut-off events. [2022-11-16 11:53:03,022 INFO L131 PetriNetUnfolder]: For 17/49 co-relation queries the response was YES. [2022-11-16 11:53:03,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 257 events. 8/257 cut-off events. For 17/49 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 668 event pairs, 0 based on Foata normal form. 3/228 useless extension candidates. Maximal degree in co-relation 302. Up to 21 conditions per place. [2022-11-16 11:53:03,026 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2022-11-16 11:53:03,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 175 transitions, 424 flow [2022-11-16 11:53:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 785 transitions. [2022-11-16 11:53:03,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8440860215053764 [2022-11-16 11:53:03,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 785 transitions. [2022-11-16 11:53:03,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 785 transitions. [2022-11-16 11:53:03,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:03,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 785 transitions. [2022-11-16 11:53:03,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,036 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,036 INFO L175 Difference]: Start difference. First operand has 172 places, 169 transitions, 366 flow. Second operand 5 states and 785 transitions. [2022-11-16 11:53:03,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 175 transitions, 424 flow [2022-11-16 11:53:03,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 175 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:53:03,042 INFO L231 Difference]: Finished difference. Result has 178 places, 171 transitions, 390 flow [2022-11-16 11:53:03,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=178, PETRI_TRANSITIONS=171} [2022-11-16 11:53:03,043 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 9 predicate places. [2022-11-16 11:53:03,044 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 171 transitions, 390 flow [2022-11-16 11:53:03,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:03,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:03,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:53:03,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:03,046 INFO L85 PathProgramCache]: Analyzing trace with hash 173687095, now seen corresponding path program 1 times [2022-11-16 11:53:03,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:03,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527930798] [2022-11-16 11:53:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:03,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:03,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:03,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527930798] [2022-11-16 11:53:03,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527930798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:03,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:03,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:03,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182309795] [2022-11-16 11:53:03,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:03,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:03,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:03,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 186 [2022-11-16 11:53:03,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 171 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:03,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 186 [2022-11-16 11:53:03,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:03,618 INFO L130 PetriNetUnfolder]: 200/1307 cut-off events. [2022-11-16 11:53:03,619 INFO L131 PetriNetUnfolder]: For 146/176 co-relation queries the response was YES. [2022-11-16 11:53:03,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 1307 events. 200/1307 cut-off events. For 146/176 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9899 event pairs, 86 based on Foata normal form. 1/1105 useless extension candidates. Maximal degree in co-relation 1734. Up to 215 conditions per place. [2022-11-16 11:53:03,642 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 36 selfloop transitions, 6 changer transitions 0/194 dead transitions. [2022-11-16 11:53:03,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 194 transitions, 538 flow [2022-11-16 11:53:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:03,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2022-11-16 11:53:03,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8505376344086022 [2022-11-16 11:53:03,645 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2022-11-16 11:53:03,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2022-11-16 11:53:03,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:03,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2022-11-16 11:53:03,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,652 INFO L175 Difference]: Start difference. First operand has 178 places, 171 transitions, 390 flow. Second operand 5 states and 791 transitions. [2022-11-16 11:53:03,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 194 transitions, 538 flow [2022-11-16 11:53:03,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 194 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:03,663 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 435 flow [2022-11-16 11:53:03,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2022-11-16 11:53:03,666 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 14 predicate places. [2022-11-16 11:53:03,666 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 435 flow [2022-11-16 11:53:03,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:03,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:03,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:53:03,668 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash -948950112, now seen corresponding path program 1 times [2022-11-16 11:53:03,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:03,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363445002] [2022-11-16 11:53:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:03,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:03,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363445002] [2022-11-16 11:53:03,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363445002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:03,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043751507] [2022-11-16 11:53:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:03,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:03,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:03,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:03,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:53:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:03,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:53:03,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:53:03,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:53:03,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043751507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:03,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:53:03,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:53:03,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438580881] [2022-11-16 11:53:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:03,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:03,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:03,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2022-11-16 11:53:03,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:03,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:03,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2022-11-16 11:53:03,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:04,171 INFO L130 PetriNetUnfolder]: 19/558 cut-off events. [2022-11-16 11:53:04,171 INFO L131 PetriNetUnfolder]: For 75/206 co-relation queries the response was YES. [2022-11-16 11:53:04,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 558 events. 19/558 cut-off events. For 75/206 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2607 event pairs, 0 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 678. Up to 32 conditions per place. [2022-11-16 11:53:04,180 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 21 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2022-11-16 11:53:04,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 185 transitions, 509 flow [2022-11-16 11:53:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2022-11-16 11:53:04,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8637992831541219 [2022-11-16 11:53:04,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2022-11-16 11:53:04,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2022-11-16 11:53:04,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:04,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2022-11-16 11:53:04,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,187 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 435 flow. Second operand 3 states and 482 transitions. [2022-11-16 11:53:04,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 185 transitions, 509 flow [2022-11-16 11:53:04,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 185 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:53:04,197 INFO L231 Difference]: Finished difference. Result has 186 places, 179 transitions, 462 flow [2022-11-16 11:53:04,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2022-11-16 11:53:04,199 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 17 predicate places. [2022-11-16 11:53:04,199 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 462 flow [2022-11-16 11:53:04,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:04,200 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:04,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:53:04,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:53:04,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash 647318105, now seen corresponding path program 1 times [2022-11-16 11:53:04,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:04,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077471881] [2022-11-16 11:53:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:04,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:04,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077471881] [2022-11-16 11:53:04,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077471881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:04,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252136094] [2022-11-16 11:53:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:04,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:04,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:04,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:04,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:53:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:04,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:53:04,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:53:04,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:53:04,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252136094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:04,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:53:04,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:53:04,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794598542] [2022-11-16 11:53:04,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:04,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:04,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2022-11-16 11:53:04,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:04,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2022-11-16 11:53:04,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:04,914 INFO L130 PetriNetUnfolder]: 19/694 cut-off events. [2022-11-16 11:53:04,914 INFO L131 PetriNetUnfolder]: For 126/348 co-relation queries the response was YES. [2022-11-16 11:53:04,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 694 events. 19/694 cut-off events. For 126/348 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3926 event pairs, 0 based on Foata normal form. 4/619 useless extension candidates. Maximal degree in co-relation 854. Up to 41 conditions per place. [2022-11-16 11:53:04,924 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 20 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2022-11-16 11:53:04,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 184 transitions, 524 flow [2022-11-16 11:53:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-11-16 11:53:04,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8620071684587813 [2022-11-16 11:53:04,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-11-16 11:53:04,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-11-16 11:53:04,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:04,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-11-16 11:53:04,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,932 INFO L175 Difference]: Start difference. First operand has 186 places, 179 transitions, 462 flow. Second operand 3 states and 481 transitions. [2022-11-16 11:53:04,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 184 transitions, 524 flow [2022-11-16 11:53:04,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 184 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:53:04,938 INFO L231 Difference]: Finished difference. Result has 188 places, 178 transitions, 468 flow [2022-11-16 11:53:04,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=188, PETRI_TRANSITIONS=178} [2022-11-16 11:53:04,939 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 19 predicate places. [2022-11-16 11:53:04,940 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 178 transitions, 468 flow [2022-11-16 11:53:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:04,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:04,941 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:04,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:05,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:53:05,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1409442416, now seen corresponding path program 1 times [2022-11-16 11:53:05,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:05,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933879664] [2022-11-16 11:53:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:05,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:05,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:05,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933879664] [2022-11-16 11:53:05,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933879664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:05,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910610660] [2022-11-16 11:53:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:05,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:05,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:53:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:05,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:53:05,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:05,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:05,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910610660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:05,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:05,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:53:05,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604918179] [2022-11-16 11:53:05,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:05,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:53:05,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:53:05,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:53:05,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2022-11-16 11:53:05,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 178 transitions, 468 flow. Second operand has 10 states, 10 states have (on average 154.9) internal successors, (1549), 10 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:05,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2022-11-16 11:53:05,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:05,634 INFO L130 PetriNetUnfolder]: 1/195 cut-off events. [2022-11-16 11:53:05,634 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-11-16 11:53:05,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 195 events. 1/195 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 393 event pairs, 0 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 253. Up to 8 conditions per place. [2022-11-16 11:53:05,637 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 13 selfloop transitions, 8 changer transitions 0/133 dead transitions. [2022-11-16 11:53:05,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 133 transitions, 378 flow [2022-11-16 11:53:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:53:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:53:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1544 transitions. [2022-11-16 11:53:05,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8301075268817204 [2022-11-16 11:53:05,642 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1544 transitions. [2022-11-16 11:53:05,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1544 transitions. [2022-11-16 11:53:05,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:05,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1544 transitions. [2022-11-16 11:53:05,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 154.4) internal successors, (1544), 10 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,653 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,653 INFO L175 Difference]: Start difference. First operand has 188 places, 178 transitions, 468 flow. Second operand 10 states and 1544 transitions. [2022-11-16 11:53:05,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 133 transitions, 378 flow [2022-11-16 11:53:05,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 133 transitions, 376 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:05,658 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 338 flow [2022-11-16 11:53:05,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2022-11-16 11:53:05,659 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -20 predicate places. [2022-11-16 11:53:05,659 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 338 flow [2022-11-16 11:53:05,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 154.9) internal successors, (1549), 10 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:05,661 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:05,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:05,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:05,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash -769373433, now seen corresponding path program 1 times [2022-11-16 11:53:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:05,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828268532] [2022-11-16 11:53:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:05,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:06,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:06,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828268532] [2022-11-16 11:53:06,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828268532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:06,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511293173] [2022-11-16 11:53:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:06,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:06,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:06,024 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:06,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:53:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:06,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:53:06,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:06,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:53:06,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511293173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:06,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:53:06,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:53:06,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425143160] [2022-11-16 11:53:06,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:06,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:53:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:53:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:53:06,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2022-11-16 11:53:06,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 154.66666666666666) internal successors, (928), 6 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:06,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:06,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2022-11-16 11:53:06,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:06,387 INFO L130 PetriNetUnfolder]: 1/194 cut-off events. [2022-11-16 11:53:06,387 INFO L131 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2022-11-16 11:53:06,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 194 events. 1/194 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 390 event pairs, 0 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 256. Up to 8 conditions per place. [2022-11-16 11:53:06,389 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 12 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2022-11-16 11:53:06,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 130 transitions, 376 flow [2022-11-16 11:53:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:53:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:53:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1083 transitions. [2022-11-16 11:53:06,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8317972350230415 [2022-11-16 11:53:06,394 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1083 transitions. [2022-11-16 11:53:06,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1083 transitions. [2022-11-16 11:53:06,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:06,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1083 transitions. [2022-11-16 11:53:06,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.71428571428572) internal successors, (1083), 7 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:06,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:06,402 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:06,403 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 338 flow. Second operand 7 states and 1083 transitions. [2022-11-16 11:53:06,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 130 transitions, 376 flow [2022-11-16 11:53:06,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 351 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-16 11:53:06,407 INFO L231 Difference]: Finished difference. Result has 144 places, 126 transitions, 319 flow [2022-11-16 11:53:06,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=144, PETRI_TRANSITIONS=126} [2022-11-16 11:53:06,409 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -25 predicate places. [2022-11-16 11:53:06,409 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 126 transitions, 319 flow [2022-11-16 11:53:06,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.66666666666666) internal successors, (928), 6 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:06,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:06,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:06,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:06,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:06,617 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:06,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:06,618 INFO L85 PathProgramCache]: Analyzing trace with hash 485247979, now seen corresponding path program 1 times [2022-11-16 11:53:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:06,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21939497] [2022-11-16 11:53:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:06,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:06,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:06,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21939497] [2022-11-16 11:53:06,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21939497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:06,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:06,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:53:06,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552159731] [2022-11-16 11:53:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:06,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:53:06,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:53:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:06,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 186 [2022-11-16 11:53:06,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 126 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:06,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:06,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 186 [2022-11-16 11:53:06,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:07,025 INFO L130 PetriNetUnfolder]: 93/607 cut-off events. [2022-11-16 11:53:07,025 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-11-16 11:53:07,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 607 events. 93/607 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3544 event pairs, 26 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 959. Up to 79 conditions per place. [2022-11-16 11:53:07,033 INFO L137 encePairwiseOnDemand]: 175/186 looper letters, 44 selfloop transitions, 19 changer transitions 0/163 dead transitions. [2022-11-16 11:53:07,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 163 transitions, 551 flow [2022-11-16 11:53:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:53:07,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:53:07,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1361 transitions. [2022-11-16 11:53:07,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8130227001194743 [2022-11-16 11:53:07,039 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1361 transitions. [2022-11-16 11:53:07,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1361 transitions. [2022-11-16 11:53:07,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:07,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1361 transitions. [2022-11-16 11:53:07,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.22222222222223) internal successors, (1361), 9 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,049 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,049 INFO L175 Difference]: Start difference. First operand has 144 places, 126 transitions, 319 flow. Second operand 9 states and 1361 transitions. [2022-11-16 11:53:07,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 163 transitions, 551 flow [2022-11-16 11:53:07,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 163 transitions, 539 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:53:07,054 INFO L231 Difference]: Finished difference. Result has 152 places, 138 transitions, 433 flow [2022-11-16 11:53:07,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=433, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2022-11-16 11:53:07,057 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -17 predicate places. [2022-11-16 11:53:07,057 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 433 flow [2022-11-16 11:53:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:07,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:07,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:53:07,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2137181233, now seen corresponding path program 1 times [2022-11-16 11:53:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584074891] [2022-11-16 11:53:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:07,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:07,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:07,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584074891] [2022-11-16 11:53:07,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584074891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:07,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:07,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:53:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370370421] [2022-11-16 11:53:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:07,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:53:07,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:07,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:53:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:07,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 186 [2022-11-16 11:53:07,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 433 flow. Second operand has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:07,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 186 [2022-11-16 11:53:07,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:07,490 INFO L130 PetriNetUnfolder]: 85/573 cut-off events. [2022-11-16 11:53:07,490 INFO L131 PetriNetUnfolder]: For 424/439 co-relation queries the response was YES. [2022-11-16 11:53:07,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 573 events. 85/573 cut-off events. For 424/439 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3256 event pairs, 27 based on Foata normal form. 19/554 useless extension candidates. Maximal degree in co-relation 1095. Up to 88 conditions per place. [2022-11-16 11:53:07,499 INFO L137 encePairwiseOnDemand]: 175/186 looper letters, 50 selfloop transitions, 19 changer transitions 0/169 dead transitions. [2022-11-16 11:53:07,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 169 transitions, 699 flow [2022-11-16 11:53:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:53:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:53:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1364 transitions. [2022-11-16 11:53:07,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-11-16 11:53:07,505 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1364 transitions. [2022-11-16 11:53:07,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1364 transitions. [2022-11-16 11:53:07,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:07,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1364 transitions. [2022-11-16 11:53:07,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.55555555555554) internal successors, (1364), 9 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,516 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,516 INFO L175 Difference]: Start difference. First operand has 152 places, 138 transitions, 433 flow. Second operand 9 states and 1364 transitions. [2022-11-16 11:53:07,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 169 transitions, 699 flow [2022-11-16 11:53:07,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 169 transitions, 658 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-16 11:53:07,525 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 480 flow [2022-11-16 11:53:07,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=480, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2022-11-16 11:53:07,526 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -11 predicate places. [2022-11-16 11:53:07,527 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 480 flow [2022-11-16 11:53:07,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:07,528 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:07,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:53:07,529 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash 196790692, now seen corresponding path program 1 times [2022-11-16 11:53:07,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:07,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150623350] [2022-11-16 11:53:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:53:07,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:07,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150623350] [2022-11-16 11:53:07,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150623350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:07,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:07,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:07,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412019825] [2022-11-16 11:53:07,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:07,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:07,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:07,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 186 [2022-11-16 11:53:07,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 480 flow. Second operand has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:07,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 186 [2022-11-16 11:53:07,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:07,851 INFO L130 PetriNetUnfolder]: 72/580 cut-off events. [2022-11-16 11:53:07,851 INFO L131 PetriNetUnfolder]: For 512/532 co-relation queries the response was YES. [2022-11-16 11:53:07,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 580 events. 72/580 cut-off events. For 512/532 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3341 event pairs, 25 based on Foata normal form. 11/562 useless extension candidates. Maximal degree in co-relation 1146. Up to 120 conditions per place. [2022-11-16 11:53:07,858 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 48 selfloop transitions, 7 changer transitions 0/164 dead transitions. [2022-11-16 11:53:07,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 164 transitions, 717 flow [2022-11-16 11:53:07,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2022-11-16 11:53:07,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8408602150537634 [2022-11-16 11:53:07,861 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2022-11-16 11:53:07,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2022-11-16 11:53:07,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:07,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2022-11-16 11:53:07,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,868 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 480 flow. Second operand 5 states and 782 transitions. [2022-11-16 11:53:07,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 164 transitions, 717 flow [2022-11-16 11:53:07,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 164 transitions, 689 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:53:07,875 INFO L231 Difference]: Finished difference. Result has 161 places, 145 transitions, 510 flow [2022-11-16 11:53:07,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=161, PETRI_TRANSITIONS=145} [2022-11-16 11:53:07,876 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -8 predicate places. [2022-11-16 11:53:07,876 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 145 transitions, 510 flow [2022-11-16 11:53:07,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:07,878 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:07,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:53:07,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:53:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:07,879 INFO L85 PathProgramCache]: Analyzing trace with hash 385826853, now seen corresponding path program 1 times [2022-11-16 11:53:07,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:07,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47922426] [2022-11-16 11:53:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:07,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:53:07,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:53:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:53:07,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:53:07,951 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:53:07,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-16 11:53:07,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-16 11:53:07,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-16 11:53:07,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-16 11:53:07,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-16 11:53:07,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-16 11:53:07,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-16 11:53:07,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-16 11:53:07,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-16 11:53:07,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-16 11:53:07,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-16 11:53:07,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-16 11:53:07,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-16 11:53:07,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-16 11:53:07,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-16 11:53:07,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-16 11:53:07,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-16 11:53:07,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-16 11:53:07,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-16 11:53:07,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:53:07,959 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:07,960 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:53:07,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:53:08,007 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:53:08,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 224 transitions, 478 flow [2022-11-16 11:53:08,098 INFO L130 PetriNetUnfolder]: 62/483 cut-off events. [2022-11-16 11:53:08,098 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:53:08,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 483 events. 62/483 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1651 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2022-11-16 11:53:08,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 224 transitions, 478 flow [2022-11-16 11:53:08,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 224 transitions, 478 flow [2022-11-16 11:53:08,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:53:08,113 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;@4c5ae611, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:53:08,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-16 11:53:08,118 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-16 11:53:08,119 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:53:08,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:08,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:08,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1839497619, now seen corresponding path program 1 times [2022-11-16 11:53:08,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:08,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922083176] [2022-11-16 11:53:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:08,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:08,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922083176] [2022-11-16 11:53:08,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922083176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:08,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:08,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:53:08,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059131319] [2022-11-16 11:53:08,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:08,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:53:08,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:08,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:53:08,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:53:08,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 224 [2022-11-16 11:53:08,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 224 transitions, 478 flow. Second operand has 2 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:08,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 224 [2022-11-16 11:53:08,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:08,246 INFO L130 PetriNetUnfolder]: 20/437 cut-off events. [2022-11-16 11:53:08,246 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-16 11:53:08,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 437 events. 20/437 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1508 event pairs, 1 based on Foata normal form. 106/475 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2022-11-16 11:53:08,253 INFO L137 encePairwiseOnDemand]: 201/224 looper letters, 6 selfloop transitions, 0 changer transitions 0/200 dead transitions. [2022-11-16 11:53:08,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 200 transitions, 442 flow [2022-11-16 11:53:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:53:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:53:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 417 transitions. [2022-11-16 11:53:08,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9308035714285714 [2022-11-16 11:53:08,255 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 417 transitions. [2022-11-16 11:53:08,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 417 transitions. [2022-11-16 11:53:08,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:08,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 417 transitions. [2022-11-16 11:53:08,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,260 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,260 INFO L175 Difference]: Start difference. First operand has 202 places, 224 transitions, 478 flow. Second operand 2 states and 417 transitions. [2022-11-16 11:53:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 200 transitions, 442 flow [2022-11-16 11:53:08,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 200 transitions, 442 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:08,266 INFO L231 Difference]: Finished difference. Result has 202 places, 200 transitions, 430 flow [2022-11-16 11:53:08,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=430, PETRI_PLACES=202, PETRI_TRANSITIONS=200} [2022-11-16 11:53:08,267 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2022-11-16 11:53:08,267 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 200 transitions, 430 flow [2022-11-16 11:53:08,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:08,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:53:08,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1840421140, now seen corresponding path program 1 times [2022-11-16 11:53:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:08,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362555903] [2022-11-16 11:53:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:08,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:08,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362555903] [2022-11-16 11:53:08,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362555903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:08,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:08,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:08,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400479516] [2022-11-16 11:53:08,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:08,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:08,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:08,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:08,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 224 [2022-11-16 11:53:08,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 200 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:08,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 224 [2022-11-16 11:53:08,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:08,439 INFO L130 PetriNetUnfolder]: 16/408 cut-off events. [2022-11-16 11:53:08,440 INFO L131 PetriNetUnfolder]: For 61/121 co-relation queries the response was YES. [2022-11-16 11:53:08,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 408 events. 16/408 cut-off events. For 61/121 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1391 event pairs, 1 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 466. Up to 30 conditions per place. [2022-11-16 11:53:08,446 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 15 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2022-11-16 11:53:08,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 204 transitions, 472 flow [2022-11-16 11:53:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2022-11-16 11:53:08,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8616071428571429 [2022-11-16 11:53:08,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2022-11-16 11:53:08,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2022-11-16 11:53:08,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:08,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2022-11-16 11:53:08,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,455 INFO L175 Difference]: Start difference. First operand has 202 places, 200 transitions, 430 flow. Second operand 3 states and 579 transitions. [2022-11-16 11:53:08,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 204 transitions, 472 flow [2022-11-16 11:53:08,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 204 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:08,461 INFO L231 Difference]: Finished difference. Result has 205 places, 201 transitions, 442 flow [2022-11-16 11:53:08,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=205, PETRI_TRANSITIONS=201} [2022-11-16 11:53:08,462 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 3 predicate places. [2022-11-16 11:53:08,463 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 201 transitions, 442 flow [2022-11-16 11:53:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:08,464 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:08,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:53:08,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1963594835, now seen corresponding path program 1 times [2022-11-16 11:53:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:08,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799115033] [2022-11-16 11:53:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799115033] [2022-11-16 11:53:08,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799115033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:08,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:08,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697421763] [2022-11-16 11:53:08,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:08,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:08,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-16 11:53:08,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 201 transitions, 442 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:08,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-16 11:53:08,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:08,672 INFO L130 PetriNetUnfolder]: 16/406 cut-off events. [2022-11-16 11:53:08,673 INFO L131 PetriNetUnfolder]: For 79/187 co-relation queries the response was YES. [2022-11-16 11:53:08,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 406 events. 16/406 cut-off events. For 79/187 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1378 event pairs, 1 based on Foata normal form. 3/353 useless extension candidates. Maximal degree in co-relation 485. Up to 40 conditions per place. [2022-11-16 11:53:08,679 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 21 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2022-11-16 11:53:08,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 207 transitions, 504 flow [2022-11-16 11:53:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2022-11-16 11:53:08,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8366071428571429 [2022-11-16 11:53:08,683 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2022-11-16 11:53:08,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2022-11-16 11:53:08,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:08,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2022-11-16 11:53:08,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,691 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,691 INFO L175 Difference]: Start difference. First operand has 205 places, 201 transitions, 442 flow. Second operand 5 states and 937 transitions. [2022-11-16 11:53:08,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 207 transitions, 504 flow [2022-11-16 11:53:08,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 207 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:53:08,697 INFO L231 Difference]: Finished difference. Result has 211 places, 203 transitions, 466 flow [2022-11-16 11:53:08,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=211, PETRI_TRANSITIONS=203} [2022-11-16 11:53:08,699 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 9 predicate places. [2022-11-16 11:53:08,699 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 203 transitions, 466 flow [2022-11-16 11:53:08,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:08,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:08,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:53:08,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash -325488069, now seen corresponding path program 1 times [2022-11-16 11:53:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:08,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293177652] [2022-11-16 11:53:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:08,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:08,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293177652] [2022-11-16 11:53:08,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293177652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:08,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:08,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:08,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516271441] [2022-11-16 11:53:08,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:08,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:08,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:08,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 224 [2022-11-16 11:53:08,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 203 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:08,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 224 [2022-11-16 11:53:08,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:11,115 INFO L130 PetriNetUnfolder]: 1867/7955 cut-off events. [2022-11-16 11:53:11,115 INFO L131 PetriNetUnfolder]: For 1334/1499 co-relation queries the response was YES. [2022-11-16 11:53:11,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11318 conditions, 7955 events. 1867/7955 cut-off events. For 1334/1499 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 90003 event pairs, 654 based on Foata normal form. 0/6990 useless extension candidates. Maximal degree in co-relation 11307. Up to 1995 conditions per place. [2022-11-16 11:53:11,288 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 52 selfloop transitions, 8 changer transitions 0/238 dead transitions. [2022-11-16 11:53:11,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 238 transitions, 698 flow [2022-11-16 11:53:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 939 transitions. [2022-11-16 11:53:11,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383928571428572 [2022-11-16 11:53:11,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 939 transitions. [2022-11-16 11:53:11,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 939 transitions. [2022-11-16 11:53:11,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:11,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 939 transitions. [2022-11-16 11:53:11,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:11,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:11,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:11,302 INFO L175 Difference]: Start difference. First operand has 211 places, 203 transitions, 466 flow. Second operand 5 states and 939 transitions. [2022-11-16 11:53:11,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 238 transitions, 698 flow [2022-11-16 11:53:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 238 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:11,311 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 526 flow [2022-11-16 11:53:11,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-16 11:53:11,313 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 14 predicate places. [2022-11-16 11:53:11,313 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 526 flow [2022-11-16 11:53:11,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:11,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:11,314 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:11,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:53:11,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:11,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash 473419428, now seen corresponding path program 1 times [2022-11-16 11:53:11,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:11,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686313950] [2022-11-16 11:53:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:11,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:11,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:11,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686313950] [2022-11-16 11:53:11,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686313950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:11,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185845847] [2022-11-16 11:53:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:11,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:11,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:53:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:11,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:53:11,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:53:11,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:53:11,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185845847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:11,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:53:11,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:53:11,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868793500] [2022-11-16 11:53:11,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:11,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:11,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:11,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:11,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:11,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-16 11:53:11,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 526 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:11,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:11,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-16 11:53:11,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:12,031 INFO L130 PetriNetUnfolder]: 75/1405 cut-off events. [2022-11-16 11:53:12,032 INFO L131 PetriNetUnfolder]: For 465/1277 co-relation queries the response was YES. [2022-11-16 11:53:12,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 1405 events. 75/1405 cut-off events. For 465/1277 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9986 event pairs, 9 based on Foata normal form. 3/1199 useless extension candidates. Maximal degree in co-relation 1740. Up to 88 conditions per place. [2022-11-16 11:53:12,063 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 24 selfloop transitions, 4 changer transitions 0/220 dead transitions. [2022-11-16 11:53:12,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 220 transitions, 611 flow [2022-11-16 11:53:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-11-16 11:53:12,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556547619047619 [2022-11-16 11:53:12,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-11-16 11:53:12,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-11-16 11:53:12,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:12,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-11-16 11:53:12,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,072 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 526 flow. Second operand 3 states and 575 transitions. [2022-11-16 11:53:12,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 220 transitions, 611 flow [2022-11-16 11:53:12,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 220 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:53:12,079 INFO L231 Difference]: Finished difference. Result has 219 places, 213 transitions, 552 flow [2022-11-16 11:53:12,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=552, PETRI_PLACES=219, PETRI_TRANSITIONS=213} [2022-11-16 11:53:12,080 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 17 predicate places. [2022-11-16 11:53:12,080 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 213 transitions, 552 flow [2022-11-16 11:53:12,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:12,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:12,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 11:53:12,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 11:53:12,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:12,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1791101109, now seen corresponding path program 1 times [2022-11-16 11:53:12,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:12,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47741208] [2022-11-16 11:53:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:12,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:12,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:12,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47741208] [2022-11-16 11:53:12,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47741208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:12,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899251119] [2022-11-16 11:53:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:12,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:12,397 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:12,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:53:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:12,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:53:12,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:53:12,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:53:12,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899251119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:12,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:53:12,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:53:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735563694] [2022-11-16 11:53:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:12,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:12,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:12,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:12,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-16 11:53:12,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 213 transitions, 552 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:12,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-16 11:53:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:13,082 INFO L130 PetriNetUnfolder]: 92/1842 cut-off events. [2022-11-16 11:53:13,083 INFO L131 PetriNetUnfolder]: For 623/1787 co-relation queries the response was YES. [2022-11-16 11:53:13,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 1842 events. 92/1842 cut-off events. For 623/1787 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 14772 event pairs, 11 based on Foata normal form. 6/1582 useless extension candidates. Maximal degree in co-relation 2295. Up to 132 conditions per place. [2022-11-16 11:53:13,120 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 23 selfloop transitions, 4 changer transitions 0/219 dead transitions. [2022-11-16 11:53:13,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 219 transitions, 625 flow [2022-11-16 11:53:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2022-11-16 11:53:13,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2022-11-16 11:53:13,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2022-11-16 11:53:13,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2022-11-16 11:53:13,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:13,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2022-11-16 11:53:13,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,128 INFO L175 Difference]: Start difference. First operand has 219 places, 213 transitions, 552 flow. Second operand 3 states and 574 transitions. [2022-11-16 11:53:13,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 219 transitions, 625 flow [2022-11-16 11:53:13,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 219 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:53:13,135 INFO L231 Difference]: Finished difference. Result has 221 places, 212 transitions, 558 flow [2022-11-16 11:53:13,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=221, PETRI_TRANSITIONS=212} [2022-11-16 11:53:13,136 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 19 predicate places. [2022-11-16 11:53:13,136 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 212 transitions, 558 flow [2022-11-16 11:53:13,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:13,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:13,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:13,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:13,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash -311907436, now seen corresponding path program 1 times [2022-11-16 11:53:13,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:13,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661098430] [2022-11-16 11:53:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:13,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:13,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661098430] [2022-11-16 11:53:13,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661098430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:13,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752667744] [2022-11-16 11:53:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:13,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:13,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:13,439 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:13,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:53:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:13,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:53:13,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:13,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:13,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752667744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:13,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:13,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:53:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120378746] [2022-11-16 11:53:13,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:53:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:53:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:53:13,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-16 11:53:13,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 212 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 184.9) internal successors, (1849), 10 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:13,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-16 11:53:13,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:14,287 INFO L130 PetriNetUnfolder]: 68/1661 cut-off events. [2022-11-16 11:53:14,288 INFO L131 PetriNetUnfolder]: For 476/994 co-relation queries the response was YES. [2022-11-16 11:53:14,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 1661 events. 68/1661 cut-off events. For 476/994 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13021 event pairs, 32 based on Foata normal form. 37/1440 useless extension candidates. Maximal degree in co-relation 2038. Up to 119 conditions per place. [2022-11-16 11:53:14,318 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 23 selfloop transitions, 11 changer transitions 0/225 dead transitions. [2022-11-16 11:53:14,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 225 transitions, 660 flow [2022-11-16 11:53:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:53:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:53:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2039 transitions. [2022-11-16 11:53:14,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275162337662337 [2022-11-16 11:53:14,334 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2039 transitions. [2022-11-16 11:53:14,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2039 transitions. [2022-11-16 11:53:14,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:14,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2039 transitions. [2022-11-16 11:53:14,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.36363636363637) internal successors, (2039), 11 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,355 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,355 INFO L175 Difference]: Start difference. First operand has 221 places, 212 transitions, 558 flow. Second operand 11 states and 2039 transitions. [2022-11-16 11:53:14,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 225 transitions, 660 flow [2022-11-16 11:53:14,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 225 transitions, 660 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:14,363 INFO L231 Difference]: Finished difference. Result has 236 places, 217 transitions, 624 flow [2022-11-16 11:53:14,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=624, PETRI_PLACES=236, PETRI_TRANSITIONS=217} [2022-11-16 11:53:14,364 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 34 predicate places. [2022-11-16 11:53:14,364 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 217 transitions, 624 flow [2022-11-16 11:53:14,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 184.9) internal successors, (1849), 10 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:14,366 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:14,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:14,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:53:14,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:14,585 INFO L85 PathProgramCache]: Analyzing trace with hash -659936833, now seen corresponding path program 1 times [2022-11-16 11:53:14,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:14,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488791669] [2022-11-16 11:53:14,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:14,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:14,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:14,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488791669] [2022-11-16 11:53:14,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488791669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:14,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411420474] [2022-11-16 11:53:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:14,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:14,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:14,712 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:14,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:53:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:14,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:53:14,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:14,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:53:14,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411420474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:14,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:53:14,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:53:14,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17686157] [2022-11-16 11:53:14,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:14,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:53:14,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:14,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:53:14,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:53:14,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-16 11:53:14,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 217 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:14,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-16 11:53:14,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:15,499 INFO L130 PetriNetUnfolder]: 68/1659 cut-off events. [2022-11-16 11:53:15,499 INFO L131 PetriNetUnfolder]: For 496/967 co-relation queries the response was YES. [2022-11-16 11:53:15,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1659 events. 68/1659 cut-off events. For 496/967 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13024 event pairs, 32 based on Foata normal form. 13/1414 useless extension candidates. Maximal degree in co-relation 2055. Up to 126 conditions per place. [2022-11-16 11:53:15,535 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 20 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2022-11-16 11:53:15,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 219 transitions, 676 flow [2022-11-16 11:53:15,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:53:15,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:53:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1299 transitions. [2022-11-16 11:53:15,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8284438775510204 [2022-11-16 11:53:15,540 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1299 transitions. [2022-11-16 11:53:15,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1299 transitions. [2022-11-16 11:53:15,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:15,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1299 transitions. [2022-11-16 11:53:15,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.57142857142858) internal successors, (1299), 7 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:15,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:15,550 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:15,551 INFO L175 Difference]: Start difference. First operand has 236 places, 217 transitions, 624 flow. Second operand 7 states and 1299 transitions. [2022-11-16 11:53:15,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 219 transitions, 676 flow [2022-11-16 11:53:15,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 219 transitions, 662 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 11:53:15,560 INFO L231 Difference]: Finished difference. Result has 236 places, 215 transitions, 612 flow [2022-11-16 11:53:15,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=612, PETRI_PLACES=236, PETRI_TRANSITIONS=215} [2022-11-16 11:53:15,562 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 34 predicate places. [2022-11-16 11:53:15,562 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 215 transitions, 612 flow [2022-11-16 11:53:15,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:15,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:15,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:15,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 11:53:15,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:53:15,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:15,771 INFO L85 PathProgramCache]: Analyzing trace with hash -251958129, now seen corresponding path program 1 times [2022-11-16 11:53:15,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:15,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794285289] [2022-11-16 11:53:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:15,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:15,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794285289] [2022-11-16 11:53:15,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794285289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:15,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:15,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:53:15,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755467640] [2022-11-16 11:53:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:15,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:53:15,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:53:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:15,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 224 [2022-11-16 11:53:15,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 215 transitions, 612 flow. Second operand has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:15,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:15,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 224 [2022-11-16 11:53:15,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:23,171 INFO L130 PetriNetUnfolder]: 7080/29918 cut-off events. [2022-11-16 11:53:23,171 INFO L131 PetriNetUnfolder]: For 9155/9996 co-relation queries the response was YES. [2022-11-16 11:53:23,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45965 conditions, 29918 events. 7080/29918 cut-off events. For 9155/9996 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 415597 event pairs, 2781 based on Foata normal form. 63/24973 useless extension candidates. Maximal degree in co-relation 45944. Up to 4847 conditions per place. [2022-11-16 11:53:23,752 INFO L137 encePairwiseOnDemand]: 211/224 looper letters, 100 selfloop transitions, 27 changer transitions 0/305 dead transitions. [2022-11-16 11:53:23,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 305 transitions, 1192 flow [2022-11-16 11:53:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:53:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:53:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1659 transitions. [2022-11-16 11:53:23,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8229166666666666 [2022-11-16 11:53:23,758 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1659 transitions. [2022-11-16 11:53:23,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1659 transitions. [2022-11-16 11:53:23,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:23,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1659 transitions. [2022-11-16 11:53:23,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 184.33333333333334) internal successors, (1659), 9 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,771 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,772 INFO L175 Difference]: Start difference. First operand has 236 places, 215 transitions, 612 flow. Second operand 9 states and 1659 transitions. [2022-11-16 11:53:23,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 305 transitions, 1192 flow [2022-11-16 11:53:23,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 305 transitions, 1177 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 11:53:23,793 INFO L231 Difference]: Finished difference. Result has 244 places, 234 transitions, 801 flow [2022-11-16 11:53:23,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=801, PETRI_PLACES=244, PETRI_TRANSITIONS=234} [2022-11-16 11:53:23,796 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 42 predicate places. [2022-11-16 11:53:23,796 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 234 transitions, 801 flow [2022-11-16 11:53:23,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:23,797 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:53:23,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:23,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash 779233491, now seen corresponding path program 1 times [2022-11-16 11:53:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:23,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333703550] [2022-11-16 11:53:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:23,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:23,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333703550] [2022-11-16 11:53:23,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333703550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:23,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:23,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:53:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81716612] [2022-11-16 11:53:23,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:23,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:53:23,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:53:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:23,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 224 [2022-11-16 11:53:23,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 234 transitions, 801 flow. Second operand has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:23,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 224 [2022-11-16 11:53:23,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:31,061 INFO L130 PetriNetUnfolder]: 6900/30429 cut-off events. [2022-11-16 11:53:31,061 INFO L131 PetriNetUnfolder]: For 23299/24506 co-relation queries the response was YES. [2022-11-16 11:53:31,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53916 conditions, 30429 events. 6900/30429 cut-off events. For 23299/24506 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 430097 event pairs, 2162 based on Foata normal form. 399/26613 useless extension candidates. Maximal degree in co-relation 53892. Up to 5375 conditions per place. [2022-11-16 11:53:31,672 INFO L137 encePairwiseOnDemand]: 211/224 looper letters, 107 selfloop transitions, 27 changer transitions 0/312 dead transitions. [2022-11-16 11:53:31,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 312 transitions, 1446 flow [2022-11-16 11:53:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:53:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:53:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1657 transitions. [2022-11-16 11:53:31,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8219246031746031 [2022-11-16 11:53:31,683 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1657 transitions. [2022-11-16 11:53:31,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1657 transitions. [2022-11-16 11:53:31,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:31,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1657 transitions. [2022-11-16 11:53:31,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 184.11111111111111) internal successors, (1657), 9 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,699 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,700 INFO L175 Difference]: Start difference. First operand has 244 places, 234 transitions, 801 flow. Second operand 9 states and 1657 transitions. [2022-11-16 11:53:31,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 312 transitions, 1446 flow [2022-11-16 11:53:31,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 312 transitions, 1379 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-16 11:53:31,816 INFO L231 Difference]: Finished difference. Result has 250 places, 242 transitions, 882 flow [2022-11-16 11:53:31,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=882, PETRI_PLACES=250, PETRI_TRANSITIONS=242} [2022-11-16 11:53:31,818 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 48 predicate places. [2022-11-16 11:53:31,818 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 242 transitions, 882 flow [2022-11-16 11:53:31,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:31,819 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:31,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:53:31,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash -724442420, now seen corresponding path program 1 times [2022-11-16 11:53:31,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:31,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287619080] [2022-11-16 11:53:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:53:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:31,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287619080] [2022-11-16 11:53:31,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287619080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:31,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:31,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261199554] [2022-11-16 11:53:31,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:31,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:31,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 224 [2022-11-16 11:53:31,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 242 transitions, 882 flow. Second operand has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:31,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 224 [2022-11-16 11:53:31,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:39,880 INFO L130 PetriNetUnfolder]: 7705/35799 cut-off events. [2022-11-16 11:53:39,881 INFO L131 PetriNetUnfolder]: For 29403/30780 co-relation queries the response was YES. [2022-11-16 11:53:40,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65646 conditions, 35799 events. 7705/35799 cut-off events. For 29403/30780 co-relation queries the response was YES. Maximal size of possible extension queue 1927. Compared 527626 event pairs, 3132 based on Foata normal form. 318/30762 useless extension candidates. Maximal degree in co-relation 65619. Up to 8498 conditions per place. [2022-11-16 11:53:40,524 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 93 selfloop transitions, 11 changer transitions 0/291 dead transitions. [2022-11-16 11:53:40,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 291 transitions, 1398 flow [2022-11-16 11:53:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2022-11-16 11:53:40,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8366071428571429 [2022-11-16 11:53:40,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2022-11-16 11:53:40,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2022-11-16 11:53:40,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:40,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2022-11-16 11:53:40,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:40,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:40,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:40,533 INFO L175 Difference]: Start difference. First operand has 250 places, 242 transitions, 882 flow. Second operand 5 states and 937 transitions. [2022-11-16 11:53:40,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 291 transitions, 1398 flow [2022-11-16 11:53:40,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 291 transitions, 1356 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:53:40,709 INFO L231 Difference]: Finished difference. Result has 253 places, 247 transitions, 932 flow [2022-11-16 11:53:40,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=932, PETRI_PLACES=253, PETRI_TRANSITIONS=247} [2022-11-16 11:53:40,710 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 51 predicate places. [2022-11-16 11:53:40,711 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 247 transitions, 932 flow [2022-11-16 11:53:40,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:40,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:40,712 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:40,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:53:40,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:40,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1100217296, now seen corresponding path program 1 times [2022-11-16 11:53:40,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:40,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593728953] [2022-11-16 11:53:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:53:40,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:40,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593728953] [2022-11-16 11:53:40,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593728953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:40,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:40,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274016694] [2022-11-16 11:53:40,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:40,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:40,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:40,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-16 11:53:40,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 247 transitions, 932 flow. Second operand has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:40,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:40,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-16 11:53:40,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:42,762 INFO L130 PetriNetUnfolder]: 311/6454 cut-off events. [2022-11-16 11:53:42,762 INFO L131 PetriNetUnfolder]: For 2738/5281 co-relation queries the response was YES. [2022-11-16 11:53:42,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8779 conditions, 6454 events. 311/6454 cut-off events. For 2738/5281 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 77787 event pairs, 137 based on Foata normal form. 194/5599 useless extension candidates. Maximal degree in co-relation 8748. Up to 351 conditions per place. [2022-11-16 11:53:42,899 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 12 selfloop transitions, 12 changer transitions 0/247 dead transitions. [2022-11-16 11:53:42,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 247 transitions, 978 flow [2022-11-16 11:53:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:53:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:53:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 928 transitions. [2022-11-16 11:53:42,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-16 11:53:42,903 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 928 transitions. [2022-11-16 11:53:42,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 928 transitions. [2022-11-16 11:53:42,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:42,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 928 transitions. [2022-11-16 11:53:42,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:42,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:42,911 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:42,912 INFO L175 Difference]: Start difference. First operand has 253 places, 247 transitions, 932 flow. Second operand 5 states and 928 transitions. [2022-11-16 11:53:42,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 247 transitions, 978 flow [2022-11-16 11:53:42,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 247 transitions, 969 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:53:42,927 INFO L231 Difference]: Finished difference. Result has 254 places, 247 transitions, 953 flow [2022-11-16 11:53:42,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=953, PETRI_PLACES=254, PETRI_TRANSITIONS=247} [2022-11-16 11:53:42,929 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 52 predicate places. [2022-11-16 11:53:42,929 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 247 transitions, 953 flow [2022-11-16 11:53:42,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:42,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:42,930 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:42,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 11:53:42,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:53:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash -57658666, now seen corresponding path program 1 times [2022-11-16 11:53:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:42,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819820518] [2022-11-16 11:53:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:53:43,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:43,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819820518] [2022-11-16 11:53:43,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819820518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:43,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:43,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:53:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665522165] [2022-11-16 11:53:43,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:43,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:53:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:53:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:43,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 224 [2022-11-16 11:53:43,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 247 transitions, 953 flow. Second operand has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:43,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 224 [2022-11-16 11:53:43,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:59,322 INFO L130 PetriNetUnfolder]: 16562/71523 cut-off events. [2022-11-16 11:53:59,323 INFO L131 PetriNetUnfolder]: For 57736/63103 co-relation queries the response was YES. [2022-11-16 11:54:00,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131792 conditions, 71523 events. 16562/71523 cut-off events. For 57736/63103 co-relation queries the response was YES. Maximal size of possible extension queue 4092. Compared 1147828 event pairs, 6494 based on Foata normal form. 679/61570 useless extension candidates. Maximal degree in co-relation 131763. Up to 12581 conditions per place. [2022-11-16 11:54:00,636 INFO L137 encePairwiseOnDemand]: 211/224 looper letters, 149 selfloop transitions, 46 changer transitions 0/377 dead transitions. [2022-11-16 11:54:00,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 377 transitions, 2098 flow [2022-11-16 11:54:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:54:00,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:54:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1656 transitions. [2022-11-16 11:54:00,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2022-11-16 11:54:00,642 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1656 transitions. [2022-11-16 11:54:00,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1656 transitions. [2022-11-16 11:54:00,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:00,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1656 transitions. [2022-11-16 11:54:00,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,655 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,655 INFO L175 Difference]: Start difference. First operand has 254 places, 247 transitions, 953 flow. Second operand 9 states and 1656 transitions. [2022-11-16 11:54:00,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 377 transitions, 2098 flow [2022-11-16 11:54:01,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 377 transitions, 2080 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:54:01,346 INFO L231 Difference]: Finished difference. Result has 265 places, 282 transitions, 1424 flow [2022-11-16 11:54:01,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1424, PETRI_PLACES=265, PETRI_TRANSITIONS=282} [2022-11-16 11:54:01,347 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 63 predicate places. [2022-11-16 11:54:01,347 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 282 transitions, 1424 flow [2022-11-16 11:54:01,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:01,348 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 11:54:01,349 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:54:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -889618050, now seen corresponding path program 1 times [2022-11-16 11:54:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:01,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173484504] [2022-11-16 11:54:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:01,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:54:01,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:01,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173484504] [2022-11-16 11:54:01,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173484504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:01,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840845480] [2022-11-16 11:54:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:01,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:01,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:01,997 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:02,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:54:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:02,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:54:02,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:54:02,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:54:02,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840845480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:02,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:54:02,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-16 11:54:02,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802244650] [2022-11-16 11:54:02,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:02,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:54:02,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:54:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:54:02,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 224 [2022-11-16 11:54:02,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 282 transitions, 1424 flow. Second operand has 14 states, 14 states have (on average 140.92857142857142) internal successors, (1973), 14 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:02,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 224 [2022-11-16 11:54:02,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:14,567 INFO L130 PetriNetUnfolder]: 8325/45169 cut-off events. [2022-11-16 11:54:14,567 INFO L131 PetriNetUnfolder]: For 45113/45949 co-relation queries the response was YES. [2022-11-16 11:54:14,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80430 conditions, 45169 events. 8325/45169 cut-off events. For 45113/45949 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 688021 event pairs, 2292 based on Foata normal form. 2665/43124 useless extension candidates. Maximal degree in co-relation 80395. Up to 6647 conditions per place. [2022-11-16 11:54:15,070 INFO L137 encePairwiseOnDemand]: 198/224 looper letters, 476 selfloop transitions, 234 changer transitions 0/859 dead transitions. [2022-11-16 11:54:15,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 859 transitions, 5669 flow [2022-11-16 11:54:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:54:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:54:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 6789 transitions. [2022-11-16 11:54:15,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6735119047619048 [2022-11-16 11:54:15,082 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 6789 transitions. [2022-11-16 11:54:15,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 6789 transitions. [2022-11-16 11:54:15,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:15,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 6789 transitions. [2022-11-16 11:54:15,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 150.86666666666667) internal successors, (6789), 45 states have internal predecessors, (6789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 224.0) internal successors, (10304), 46 states have internal predecessors, (10304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,124 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 224.0) internal successors, (10304), 46 states have internal predecessors, (10304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,125 INFO L175 Difference]: Start difference. First operand has 265 places, 282 transitions, 1424 flow. Second operand 45 states and 6789 transitions. [2022-11-16 11:54:15,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 859 transitions, 5669 flow [2022-11-16 11:54:15,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 859 transitions, 5602 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-16 11:54:15,346 INFO L231 Difference]: Finished difference. Result has 325 places, 472 transitions, 3543 flow [2022-11-16 11:54:15,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3543, PETRI_PLACES=325, PETRI_TRANSITIONS=472} [2022-11-16 11:54:15,348 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 123 predicate places. [2022-11-16 11:54:15,348 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 472 transitions, 3543 flow [2022-11-16 11:54:15,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 140.92857142857142) internal successors, (1973), 14 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:15,349 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:15,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 11:54:15,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183439fa-50c7-49b0-9cb0-3fed219ffab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:15,551 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:54:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1787417820, now seen corresponding path program 1 times [2022-11-16 11:54:15,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:15,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938708374] [2022-11-16 11:54:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:15,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:54:15,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:15,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938708374] [2022-11-16 11:54:15,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938708374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:15,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:15,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:15,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626806259] [2022-11-16 11:54:15,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:15,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:15,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:15,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:15,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:15,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 224 [2022-11-16 11:54:15,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 472 transitions, 3543 flow. Second operand has 6 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:15,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 224 [2022-11-16 11:54:15,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand