./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:23:24,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:23:24,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:23:24,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:23:24,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:23:24,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:23:24,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:23:24,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:23:24,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:23:24,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:23:24,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:23:24,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:23:24,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:23:24,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:23:24,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:23:24,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:23:24,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:23:24,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:23:24,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:23:24,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:23:24,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:23:24,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:23:24,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:23:24,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:23:24,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:23:24,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:23:24,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:23:24,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:23:24,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:23:24,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:23:24,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:23:24,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:23:24,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:23:24,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:23:24,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:23:24,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:23:24,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:23:24,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:23:24,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:23:24,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:23:24,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:23:24,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:23:24,570 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:23:24,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:23:24,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:23:24,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:23:24,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:23:24,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:23:24,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:23:24,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:23:24,574 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:23:24,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:23:24,574 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:23:24,575 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:23:24,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:23:24,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:23:24,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:23:24,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:23:24,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:23:24,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:23:24,576 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:23:24,576 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:23:24,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:23:24,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:23:24,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:23:24,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:23:24,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:23:24,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:23:24,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:23:24,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:23:24,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:23:24,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:23:24,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:23:24,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:23:24,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:23:24,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:23:24,580 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:23:24,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:23:24,581 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2022-11-25 17:23:24,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:23:24,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:23:24,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:23:24,879 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:23:24,882 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:23:24,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2022-11-25 17:23:28,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:23:28,449 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:23:28,449 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2022-11-25 17:23:28,464 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/data/4c8fc7857/e8828051c9be4b299d009e6b3d6e0326/FLAGe1e772a76 [2022-11-25 17:23:28,481 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/data/4c8fc7857/e8828051c9be4b299d009e6b3d6e0326 [2022-11-25 17:23:28,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:23:28,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:23:28,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:23:28,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:23:28,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:23:28,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:23:28" (1/1) ... [2022-11-25 17:23:28,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e092e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:28, skipping insertion in model container [2022-11-25 17:23:28,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:23:28" (1/1) ... [2022-11-25 17:23:28,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:23:28,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:23:28,955 WARN L237 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_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553] [2022-11-25 17:23:28,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:23:28,977 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:23:29,035 WARN L237 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_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553] [2022-11-25 17:23:29,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:23:29,074 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:23:29,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29 WrapperNode [2022-11-25 17:23:29,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:23:29,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:23:29,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:23:29,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:23:29,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,145 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2022-11-25 17:23:29,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:23:29,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:23:29,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:23:29,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:23:29,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:23:29,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:23:29,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:23:29,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:23:29,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:23:29,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:23:29,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:23:29,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a68b07f-5b32-4aca-b5c6-bc226e4b2c0d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:23:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:23:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 17:23:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 17:23:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:23:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:23:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:23:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:23:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:23:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:23:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:23:29,295 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:23:29,449 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:23:29,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:23:29,693 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:23:29,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:23:29,788 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:23:29,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:29 BoogieIcfgContainer [2022-11-25 17:23:29,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:23:29,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:23:29,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:23:29,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:23:29,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:23:28" (1/3) ... [2022-11-25 17:23:29,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75416922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:23:29, skipping insertion in model container [2022-11-25 17:23:29,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (2/3) ... [2022-11-25 17:23:29,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75416922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:23:29, skipping insertion in model container [2022-11-25 17:23:29,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:29" (3/3) ... [2022-11-25 17:23:29,804 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2022-11-25 17:23:29,814 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:23:29,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:23:29,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 17:23:29,828 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:23:29,940 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:23:29,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 189 flow [2022-11-25 17:23:30,065 INFO L130 PetriNetUnfolder]: 9/103 cut-off events. [2022-11-25 17:23:30,069 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:23:30,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 9/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2022-11-25 17:23:30,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 92 transitions, 189 flow [2022-11-25 17:23:30,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 92 transitions, 189 flow [2022-11-25 17:23:30,085 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:23:30,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 92 transitions, 189 flow [2022-11-25 17:23:30,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 92 transitions, 189 flow [2022-11-25 17:23:30,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 189 flow [2022-11-25 17:23:30,142 INFO L130 PetriNetUnfolder]: 9/103 cut-off events. [2022-11-25 17:23:30,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:23:30,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 9/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2022-11-25 17:23:30,145 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2022-11-25 17:23:34,324 INFO L134 LiptonReduction]: Checked pairs total: 1334 [2022-11-25 17:23:34,324 INFO L136 LiptonReduction]: Total number of compositions: 107 [2022-11-25 17:23:34,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:23:34,348 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;@72ab7a1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:23:34,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-25 17:23:34,353 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2022-11-25 17:23:34,353 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:23:34,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:34,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:34,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-25 17:23:34,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:34,360 INFO L85 PathProgramCache]: Analyzing trace with hash 432088925, now seen corresponding path program 1 times [2022-11-25 17:23:34,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:34,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30833372] [2022-11-25 17:23:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:34,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30833372] [2022-11-25 17:23:34,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30833372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:34,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:34,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900490370] [2022-11-25 17:23:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:34,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:34,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:34,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2022-11-25 17:23:34,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:34,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:34,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2022-11-25 17:23:34,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:34,932 INFO L130 PetriNetUnfolder]: 11/29 cut-off events. [2022-11-25 17:23:34,932 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:23:34,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 64 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 50. Up to 23 conditions per place. [2022-11-25 17:23:34,935 INFO L137 encePairwiseOnDemand]: 195/199 looper letters, 10 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2022-11-25 17:23:34,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 51 flow [2022-11-25 17:23:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2022-11-25 17:23:34,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4221105527638191 [2022-11-25 17:23:34,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2022-11-25 17:23:34,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2022-11-25 17:23:34,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:34,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2022-11-25 17:23:34,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:34,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:34,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:34,975 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 31 flow. Second operand 3 states and 252 transitions. [2022-11-25 17:23:34,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 51 flow [2022-11-25 17:23:34,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 51 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:23:34,979 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 27 flow [2022-11-25 17:23:34,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2022-11-25 17:23:34,985 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-11-25 17:23:34,985 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 27 flow [2022-11-25 17:23:34,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:34,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:34,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:34,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:23:34,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-25 17:23:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash 432088994, now seen corresponding path program 1 times [2022-11-25 17:23:34,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:34,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852836881] [2022-11-25 17:23:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:34,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:35,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:35,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852836881] [2022-11-25 17:23:35,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852836881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:35,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:35,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:35,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072896412] [2022-11-25 17:23:35,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:35,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:35,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:35,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:35,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:35,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2022-11-25 17:23:35,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:35,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2022-11-25 17:23:35,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:35,127 INFO L130 PetriNetUnfolder]: 9/24 cut-off events. [2022-11-25 17:23:35,127 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:23:35,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 24 events. 9/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 43. Up to 18 conditions per place. [2022-11-25 17:23:35,128 INFO L137 encePairwiseOnDemand]: 197/199 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2022-11-25 17:23:35,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 49 flow [2022-11-25 17:23:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-11-25 17:23:35,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4154103852596315 [2022-11-25 17:23:35,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-11-25 17:23:35,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-11-25 17:23:35,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:35,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-11-25 17:23:35,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,143 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 27 flow. Second operand 3 states and 248 transitions. [2022-11-25 17:23:35,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 49 flow [2022-11-25 17:23:35,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:35,144 INFO L231 Difference]: Finished difference. Result has 14 places, 9 transitions, 26 flow [2022-11-25 17:23:35,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2022-11-25 17:23:35,145 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-11-25 17:23:35,145 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 26 flow [2022-11-25 17:23:35,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:35,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:35,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:23:35,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-25 17:23:35,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 432089061, now seen corresponding path program 1 times [2022-11-25 17:23:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:35,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339437647] [2022-11-25 17:23:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:35,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:35,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339437647] [2022-11-25 17:23:35,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339437647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:35,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:35,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:35,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767927900] [2022-11-25 17:23:35,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:35,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:35,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:35,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2022-11-25 17:23:35,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:35,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2022-11-25 17:23:35,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:35,375 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2022-11-25 17:23:35,375 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:23:35,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 19 events. 7/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 36. Up to 13 conditions per place. [2022-11-25 17:23:35,376 INFO L137 encePairwiseOnDemand]: 197/199 looper letters, 8 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2022-11-25 17:23:35,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 46 flow [2022-11-25 17:23:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-11-25 17:23:35,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4137353433835846 [2022-11-25 17:23:35,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-11-25 17:23:35,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-11-25 17:23:35,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:35,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-11-25 17:23:35,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,383 INFO L175 Difference]: Start difference. First operand has 14 places, 9 transitions, 26 flow. Second operand 3 states and 247 transitions. [2022-11-25 17:23:35,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 46 flow [2022-11-25 17:23:35,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 45 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:35,384 INFO L231 Difference]: Finished difference. Result has 14 places, 8 transitions, 25 flow [2022-11-25 17:23:35,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=14, PETRI_TRANSITIONS=8} [2022-11-25 17:23:35,385 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-11-25 17:23:35,385 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 25 flow [2022-11-25 17:23:35,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:35,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:35,386 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 17:23:35,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:23:35,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-25 17:23:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash 509781209, now seen corresponding path program 1 times [2022-11-25 17:23:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:35,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839681231] [2022-11-25 17:23:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:35,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:23:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:35,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:23:35,422 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:23:35,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-25 17:23:35,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-25 17:23:35,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-25 17:23:35,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-25 17:23:35,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-11-25 17:23:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-25 17:23:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-25 17:23:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-25 17:23:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-25 17:23:35,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:23:35,428 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 17:23:35,431 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:23:35,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:23:35,458 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:23:35,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 147 transitions, 306 flow [2022-11-25 17:23:35,493 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2022-11-25 17:23:35,494 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:23:35,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 171 events. 17/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2022-11-25 17:23:35,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 147 transitions, 306 flow [2022-11-25 17:23:35,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 147 transitions, 306 flow [2022-11-25 17:23:35,499 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:23:35,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 147 transitions, 306 flow [2022-11-25 17:23:35,499 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 147 transitions, 306 flow [2022-11-25 17:23:35,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 147 transitions, 306 flow [2022-11-25 17:23:35,546 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2022-11-25 17:23:35,546 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:23:35,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 171 events. 17/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2022-11-25 17:23:35,554 INFO L119 LiptonReduction]: Number of co-enabled transitions 8964 [2022-11-25 17:23:40,116 INFO L134 LiptonReduction]: Checked pairs total: 12356 [2022-11-25 17:23:40,116 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-11-25 17:23:40,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:23:40,120 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;@72ab7a1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:23:40,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-25 17:23:40,122 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-11-25 17:23:40,123 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:23:40,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:40,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:40,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:23:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 784079229, now seen corresponding path program 1 times [2022-11-25 17:23:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:40,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584438443] [2022-11-25 17:23:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:40,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:40,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584438443] [2022-11-25 17:23:40,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584438443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:40,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:40,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720352774] [2022-11-25 17:23:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:40,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:40,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:40,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 307 [2022-11-25 17:23:40,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:40,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 307 [2022-11-25 17:23:40,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:40,303 INFO L130 PetriNetUnfolder]: 180/337 cut-off events. [2022-11-25 17:23:40,303 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-25 17:23:40,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 337 events. 180/337 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1690 event pairs, 6 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 542. Up to 250 conditions per place. [2022-11-25 17:23:40,311 INFO L137 encePairwiseOnDemand]: 300/307 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2022-11-25 17:23:40,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 145 flow [2022-11-25 17:23:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2022-11-25 17:23:40,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4527687296416938 [2022-11-25 17:23:40,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2022-11-25 17:23:40,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2022-11-25 17:23:40,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:40,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2022-11-25 17:23:40,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 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) [2022-11-25 17:23:40,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,319 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 80 flow. Second operand 3 states and 417 transitions. [2022-11-25 17:23:40,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 145 flow [2022-11-25 17:23:40,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 143 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 17:23:40,321 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 68 flow [2022-11-25 17:23:40,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2022-11-25 17:23:40,324 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2022-11-25 17:23:40,324 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 68 flow [2022-11-25 17:23:40,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:40,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:23:40,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:23:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash 784079419, now seen corresponding path program 1 times [2022-11-25 17:23:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:40,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200735721] [2022-11-25 17:23:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:40,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:40,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200735721] [2022-11-25 17:23:40,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200735721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:40,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:40,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:40,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854366019] [2022-11-25 17:23:40,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:40,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:40,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 307 [2022-11-25 17:23:40,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:40,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 307 [2022-11-25 17:23:40,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:40,595 INFO L130 PetriNetUnfolder]: 224/434 cut-off events. [2022-11-25 17:23:40,595 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:23:40,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 434 events. 224/434 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2194 event pairs, 122 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 443. Up to 277 conditions per place. [2022-11-25 17:23:40,599 INFO L137 encePairwiseOnDemand]: 303/307 looper letters, 27 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2022-11-25 17:23:40,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 153 flow [2022-11-25 17:23:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2022-11-25 17:23:40,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44082519001085774 [2022-11-25 17:23:40,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 406 transitions. [2022-11-25 17:23:40,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 406 transitions. [2022-11-25 17:23:40,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:40,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 406 transitions. [2022-11-25 17:23:40,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,607 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 68 flow. Second operand 3 states and 406 transitions. [2022-11-25 17:23:40,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 153 flow [2022-11-25 17:23:40,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:40,609 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 81 flow [2022-11-25 17:23:40,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2022-11-25 17:23:40,610 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 17:23:40,611 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 81 flow [2022-11-25 17:23:40,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:40,612 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:40,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:23:40,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:23:40,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash 784079268, now seen corresponding path program 1 times [2022-11-25 17:23:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:40,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059195624] [2022-11-25 17:23:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:40,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:40,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:40,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059195624] [2022-11-25 17:23:40,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059195624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:40,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:40,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149668271] [2022-11-25 17:23:40,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:40,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:40,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:40,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:40,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:40,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 307 [2022-11-25 17:23:40,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:40,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 307 [2022-11-25 17:23:40,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:40,762 INFO L130 PetriNetUnfolder]: 176/325 cut-off events. [2022-11-25 17:23:40,763 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-25 17:23:40,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 325 events. 176/325 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1485 event pairs, 26 based on Foata normal form. 32/265 useless extension candidates. Maximal degree in co-relation 630. Up to 250 conditions per place. [2022-11-25 17:23:40,766 INFO L137 encePairwiseOnDemand]: 305/307 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2022-11-25 17:23:40,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 156 flow [2022-11-25 17:23:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2022-11-25 17:23:40,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44299674267100975 [2022-11-25 17:23:40,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2022-11-25 17:23:40,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2022-11-25 17:23:40,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:40,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2022-11-25 17:23:40,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,773 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 81 flow. Second operand 3 states and 408 transitions. [2022-11-25 17:23:40,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 156 flow [2022-11-25 17:23:40,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:40,775 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 77 flow [2022-11-25 17:23:40,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-11-25 17:23:40,776 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 17:23:40,777 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 77 flow [2022-11-25 17:23:40,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:40,777 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:23:40,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:23:40,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:23:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:40,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1463340935, now seen corresponding path program 1 times [2022-11-25 17:23:40,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:40,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10866436] [2022-11-25 17:23:40,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:40,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:40,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10866436] [2022-11-25 17:23:40,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10866436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:40,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:40,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:40,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146510024] [2022-11-25 17:23:40,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:40,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:40,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:40,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 307 [2022-11-25 17:23:40,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:40,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 307 [2022-11-25 17:23:40,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:40,901 INFO L130 PetriNetUnfolder]: 157/298 cut-off events. [2022-11-25 17:23:40,919 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-25 17:23:40,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 298 events. 157/298 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1368 event pairs, 6 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 544. Up to 211 conditions per place. [2022-11-25 17:23:40,922 INFO L137 encePairwiseOnDemand]: 305/307 looper letters, 25 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-11-25 17:23:40,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 148 flow [2022-11-25 17:23:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2022-11-25 17:23:40,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44191096634093374 [2022-11-25 17:23:40,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2022-11-25 17:23:40,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2022-11-25 17:23:40,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:40,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2022-11-25 17:23:40,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,930 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 77 flow. Second operand 3 states and 407 transitions. [2022-11-25 17:23:40,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 148 flow [2022-11-25 17:23:40,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:40,932 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 74 flow [2022-11-25 17:23:40,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-11-25 17:23:40,934 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 17:23:40,934 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 74 flow [2022-11-25 17:23:40,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:40,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:40,934 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:40,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:23:40,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:23:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1542271404, now seen corresponding path program 1 times [2022-11-25 17:23:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:40,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006546519] [2022-11-25 17:23:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:23:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:41,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006546519] [2022-11-25 17:23:41,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006546519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:41,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:41,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846875815] [2022-11-25 17:23:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:41,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:41,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:41,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 307 [2022-11-25 17:23:41,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:41,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 307 [2022-11-25 17:23:41,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:41,105 INFO L130 PetriNetUnfolder]: 153/296 cut-off events. [2022-11-25 17:23:41,106 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2022-11-25 17:23:41,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 296 events. 153/296 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1309 event pairs, 15 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 464. Up to 192 conditions per place. [2022-11-25 17:23:41,108 INFO L137 encePairwiseOnDemand]: 305/307 looper letters, 23 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-11-25 17:23:41,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 144 flow [2022-11-25 17:23:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2022-11-25 17:23:41,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4386536373507057 [2022-11-25 17:23:41,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2022-11-25 17:23:41,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2022-11-25 17:23:41,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:41,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2022-11-25 17:23:41,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,115 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 74 flow. Second operand 3 states and 404 transitions. [2022-11-25 17:23:41,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 144 flow [2022-11-25 17:23:41,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:41,117 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 73 flow [2022-11-25 17:23:41,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-11-25 17:23:41,118 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 17:23:41,118 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 73 flow [2022-11-25 17:23:41,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:41,119 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:41,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:23:41,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:23:41,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1542271261, now seen corresponding path program 1 times [2022-11-25 17:23:41,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:41,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533857347] [2022-11-25 17:23:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:41,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:23:41,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:41,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533857347] [2022-11-25 17:23:41,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533857347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:41,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:41,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669135585] [2022-11-25 17:23:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:41,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:41,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 307 [2022-11-25 17:23:41,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:41,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 307 [2022-11-25 17:23:41,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:41,249 INFO L130 PetriNetUnfolder]: 135/266 cut-off events. [2022-11-25 17:23:41,249 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-25 17:23:41,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 266 events. 135/266 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1125 event pairs, 15 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 420. Up to 162 conditions per place. [2022-11-25 17:23:41,252 INFO L137 encePairwiseOnDemand]: 305/307 looper letters, 22 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-11-25 17:23:41,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 140 flow [2022-11-25 17:23:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2022-11-25 17:23:41,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4375678610206297 [2022-11-25 17:23:41,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2022-11-25 17:23:41,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2022-11-25 17:23:41,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:41,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2022-11-25 17:23:41,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,259 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 73 flow. Second operand 3 states and 403 transitions. [2022-11-25 17:23:41,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 140 flow [2022-11-25 17:23:41,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:41,260 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 72 flow [2022-11-25 17:23:41,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2022-11-25 17:23:41,261 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 17:23:41,261 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 72 flow [2022-11-25 17:23:41,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:41,262 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:41,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:23:41,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:23:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1542271171, now seen corresponding path program 1 times [2022-11-25 17:23:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:41,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569164609] [2022-11-25 17:23:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:41,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:23:41,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569164609] [2022-11-25 17:23:41,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569164609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:41,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:41,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:41,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208483149] [2022-11-25 17:23:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:41,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:41,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:41,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 307 [2022-11-25 17:23:41,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:41,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 307 [2022-11-25 17:23:41,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:41,398 INFO L130 PetriNetUnfolder]: 117/236 cut-off events. [2022-11-25 17:23:41,398 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-25 17:23:41,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 236 events. 117/236 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 946 event pairs, 15 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 376. Up to 132 conditions per place. [2022-11-25 17:23:41,401 INFO L137 encePairwiseOnDemand]: 305/307 looper letters, 21 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-11-25 17:23:41,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 137 flow [2022-11-25 17:23:41,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:41,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2022-11-25 17:23:41,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4364820846905538 [2022-11-25 17:23:41,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2022-11-25 17:23:41,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2022-11-25 17:23:41,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:41,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2022-11-25 17:23:41,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,407 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 72 flow. Second operand 3 states and 402 transitions. [2022-11-25 17:23:41,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 137 flow [2022-11-25 17:23:41,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:41,409 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 71 flow [2022-11-25 17:23:41,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2022-11-25 17:23:41,410 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 17:23:41,410 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 71 flow [2022-11-25 17:23:41,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:41,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:41,411 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 17:23:41,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:23:41,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:23:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:41,412 INFO L85 PathProgramCache]: Analyzing trace with hash -368804397, now seen corresponding path program 1 times [2022-11-25 17:23:41,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:41,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060855569] [2022-11-25 17:23:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:41,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:41,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:23:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:41,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:23:41,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:23:41,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-25 17:23:41,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-25 17:23:41,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-25 17:23:41,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-25 17:23:41,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-25 17:23:41,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-25 17:23:41,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-25 17:23:41,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-25 17:23:41,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-25 17:23:41,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-25 17:23:41,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-25 17:23:41,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-25 17:23:41,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-25 17:23:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:23:41,434 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:41,435 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:23:41,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:23:41,463 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:23:41,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 202 transitions, 425 flow [2022-11-25 17:23:41,500 INFO L130 PetriNetUnfolder]: 25/239 cut-off events. [2022-11-25 17:23:41,500 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:23:41,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 25/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 615 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-11-25 17:23:41,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 202 transitions, 425 flow [2022-11-25 17:23:41,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 202 transitions, 425 flow [2022-11-25 17:23:41,506 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:23:41,506 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 202 transitions, 425 flow [2022-11-25 17:23:41,506 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 202 transitions, 425 flow [2022-11-25 17:23:41,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 202 transitions, 425 flow [2022-11-25 17:23:41,538 INFO L130 PetriNetUnfolder]: 25/239 cut-off events. [2022-11-25 17:23:41,538 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:23:41,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 25/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 615 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-11-25 17:23:41,577 INFO L119 LiptonReduction]: Number of co-enabled transitions 22356 [2022-11-25 17:23:47,438 INFO L134 LiptonReduction]: Checked pairs total: 32221 [2022-11-25 17:23:47,438 INFO L136 LiptonReduction]: Total number of compositions: 227 [2022-11-25 17:23:47,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:23:47,441 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;@72ab7a1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:23:47,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 17:23:47,443 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-11-25 17:23:47,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:23:47,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:47,444 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:47,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1247059197, now seen corresponding path program 1 times [2022-11-25 17:23:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:47,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948135516] [2022-11-25 17:23:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:47,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:47,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948135516] [2022-11-25 17:23:47,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948135516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:47,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:47,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:47,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085186766] [2022-11-25 17:23:47,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:47,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:47,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:47,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:47,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2022-11-25 17:23:47,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:47,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:47,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2022-11-25 17:23:47,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:48,050 INFO L130 PetriNetUnfolder]: 2056/3152 cut-off events. [2022-11-25 17:23:48,051 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2022-11-25 17:23:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6120 conditions, 3152 events. 2056/3152 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 19416 event pairs, 132 based on Foata normal form. 0/2010 useless extension candidates. Maximal degree in co-relation 1327. Up to 2448 conditions per place. [2022-11-25 17:23:48,076 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 42 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-11-25 17:23:48,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 233 flow [2022-11-25 17:23:48,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2022-11-25 17:23:48,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45143745143745145 [2022-11-25 17:23:48,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2022-11-25 17:23:48,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2022-11-25 17:23:48,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:48,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2022-11-25 17:23:48,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,084 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 117 flow. Second operand 3 states and 581 transitions. [2022-11-25 17:23:48,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 233 flow [2022-11-25 17:23:48,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 225 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-25 17:23:48,088 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 97 flow [2022-11-25 17:23:48,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2022-11-25 17:23:48,090 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-25 17:23:48,090 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 97 flow [2022-11-25 17:23:48,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:48,091 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:48,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:23:48,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:48,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1247059488, now seen corresponding path program 1 times [2022-11-25 17:23:48,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:48,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990274748] [2022-11-25 17:23:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:48,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:48,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990274748] [2022-11-25 17:23:48,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990274748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:48,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:48,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482224222] [2022-11-25 17:23:48,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:48,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:23:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:23:48,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:23:48,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 429 [2022-11-25 17:23:48,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:48,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 429 [2022-11-25 17:23:48,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:48,675 INFO L130 PetriNetUnfolder]: 1781/2763 cut-off events. [2022-11-25 17:23:48,675 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-11-25 17:23:48,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5372 conditions, 2763 events. 1781/2763 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 16568 event pairs, 132 based on Foata normal form. 0/1857 useless extension candidates. Maximal degree in co-relation 5282. Up to 2059 conditions per place. [2022-11-25 17:23:48,694 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 40 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2022-11-25 17:23:48,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 223 flow [2022-11-25 17:23:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:23:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:23:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 739 transitions. [2022-11-25 17:23:48,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43065268065268064 [2022-11-25 17:23:48,698 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 739 transitions. [2022-11-25 17:23:48,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 739 transitions. [2022-11-25 17:23:48,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:48,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 739 transitions. [2022-11-25 17:23:48,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,704 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,704 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 97 flow. Second operand 4 states and 739 transitions. [2022-11-25 17:23:48,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 223 flow [2022-11-25 17:23:48,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:48,707 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 98 flow [2022-11-25 17:23:48,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-11-25 17:23:48,709 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2022-11-25 17:23:48,710 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 98 flow [2022-11-25 17:23:48,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:48,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:48,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:23:48,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:48,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:48,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1247059360, now seen corresponding path program 1 times [2022-11-25 17:23:48,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:48,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630856103] [2022-11-25 17:23:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:48,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:48,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:48,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630856103] [2022-11-25 17:23:48,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630856103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:48,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:48,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:48,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293871867] [2022-11-25 17:23:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:48,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:48,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:48,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2022-11-25 17:23:48,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:48,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:48,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2022-11-25 17:23:48,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:49,186 INFO L130 PetriNetUnfolder]: 1454/2218 cut-off events. [2022-11-25 17:23:49,187 INFO L131 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2022-11-25 17:23:49,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 2218 events. 1454/2218 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11773 event pairs, 320 based on Foata normal form. 0/1568 useless extension candidates. Maximal degree in co-relation 4447. Up to 1670 conditions per place. [2022-11-25 17:23:49,205 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 40 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2022-11-25 17:23:49,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 222 flow [2022-11-25 17:23:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2022-11-25 17:23:49,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2022-11-25 17:23:49,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2022-11-25 17:23:49,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2022-11-25 17:23:49,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:49,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2022-11-25 17:23:49,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,215 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 98 flow. Second operand 3 states and 567 transitions. [2022-11-25 17:23:49,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 222 flow [2022-11-25 17:23:49,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:23:49,217 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 95 flow [2022-11-25 17:23:49,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-11-25 17:23:49,218 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-25 17:23:49,218 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 95 flow [2022-11-25 17:23:49,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:49,219 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:49,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:23:49,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1558506542, now seen corresponding path program 1 times [2022-11-25 17:23:49,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:49,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086626407] [2022-11-25 17:23:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:49,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:23:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:49,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086626407] [2022-11-25 17:23:49,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086626407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:49,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:49,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:49,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896395980] [2022-11-25 17:23:49,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:49,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:49,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:49,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:49,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:49,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2022-11-25 17:23:49,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:49,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2022-11-25 17:23:49,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:49,643 INFO L130 PetriNetUnfolder]: 1448/2199 cut-off events. [2022-11-25 17:23:49,644 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2022-11-25 17:23:49,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4622 conditions, 2199 events. 1448/2199 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11894 event pairs, 198 based on Foata normal form. 0/1556 useless extension candidates. Maximal degree in co-relation 3393. Up to 1730 conditions per place. [2022-11-25 17:23:49,671 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 37 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-11-25 17:23:49,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 206 flow [2022-11-25 17:23:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-11-25 17:23:49,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2022-11-25 17:23:49,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-11-25 17:23:49,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-11-25 17:23:49,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:49,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-11-25 17:23:49,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-25 17:23:49,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,681 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 95 flow. Second operand 3 states and 564 transitions. [2022-11-25 17:23:49,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 206 flow [2022-11-25 17:23:49,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:49,684 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 94 flow [2022-11-25 17:23:49,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2022-11-25 17:23:49,685 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-25 17:23:49,685 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 94 flow [2022-11-25 17:23:49,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:49,686 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:49,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:23:49,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1558506288, now seen corresponding path program 1 times [2022-11-25 17:23:49,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:49,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992489820] [2022-11-25 17:23:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:49,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:23:49,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:49,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992489820] [2022-11-25 17:23:49,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992489820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:49,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:49,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783493444] [2022-11-25 17:23:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:49,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:23:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:23:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:23:49,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 429 [2022-11-25 17:23:49,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:49,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:49,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 429 [2022-11-25 17:23:49,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:50,141 INFO L130 PetriNetUnfolder]: 1253/1924 cut-off events. [2022-11-25 17:23:50,141 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2022-11-25 17:23:50,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4089 conditions, 1924 events. 1253/1924 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10150 event pairs, 178 based on Foata normal form. 0/1406 useless extension candidates. Maximal degree in co-relation 3005. Up to 1455 conditions per place. [2022-11-25 17:23:50,155 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 35 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2022-11-25 17:23:50,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 202 flow [2022-11-25 17:23:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:23:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:23:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 734 transitions. [2022-11-25 17:23:50,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42773892773892774 [2022-11-25 17:23:50,159 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 734 transitions. [2022-11-25 17:23:50,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 734 transitions. [2022-11-25 17:23:50,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:50,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 734 transitions. [2022-11-25 17:23:50,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,166 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 94 flow. Second operand 4 states and 734 transitions. [2022-11-25 17:23:50,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 202 flow [2022-11-25 17:23:50,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:50,170 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 95 flow [2022-11-25 17:23:50,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2022-11-25 17:23:50,171 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2022-11-25 17:23:50,171 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 95 flow [2022-11-25 17:23:50,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:50,172 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:50,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:23:50,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1558506431, now seen corresponding path program 1 times [2022-11-25 17:23:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:50,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001482077] [2022-11-25 17:23:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:50,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:23:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001482077] [2022-11-25 17:23:50,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001482077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:50,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:50,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173596258] [2022-11-25 17:23:50,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:50,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:50,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:50,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2022-11-25 17:23:50,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:50,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2022-11-25 17:23:50,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:50,551 INFO L130 PetriNetUnfolder]: 1058/1649 cut-off events. [2022-11-25 17:23:50,551 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-11-25 17:23:50,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3557 conditions, 1649 events. 1058/1649 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8485 event pairs, 158 based on Foata normal form. 0/1257 useless extension candidates. Maximal degree in co-relation 2617. Up to 1180 conditions per place. [2022-11-25 17:23:50,562 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 35 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2022-11-25 17:23:50,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 201 flow [2022-11-25 17:23:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2022-11-25 17:23:50,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4366744366744367 [2022-11-25 17:23:50,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2022-11-25 17:23:50,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2022-11-25 17:23:50,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:50,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2022-11-25 17:23:50,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,571 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 95 flow. Second operand 3 states and 562 transitions. [2022-11-25 17:23:50,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 201 flow [2022-11-25 17:23:50,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:23:50,572 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 92 flow [2022-11-25 17:23:50,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2022-11-25 17:23:50,573 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-25 17:23:50,573 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 92 flow [2022-11-25 17:23:50,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:50,574 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:50,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:23:50,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1277110365, now seen corresponding path program 1 times [2022-11-25 17:23:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:50,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853630105] [2022-11-25 17:23:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:50,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:23:50,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:50,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853630105] [2022-11-25 17:23:50,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853630105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:50,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:50,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:50,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262577217] [2022-11-25 17:23:50,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:50,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:50,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:50,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2022-11-25 17:23:50,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:50,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2022-11-25 17:23:50,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:50,920 INFO L130 PetriNetUnfolder]: 1048/1654 cut-off events. [2022-11-25 17:23:50,921 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-11-25 17:23:50,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 1654 events. 1048/1654 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8341 event pairs, 144 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 2697. Up to 1100 conditions per place. [2022-11-25 17:23:50,932 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 32 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2022-11-25 17:23:50,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 185 flow [2022-11-25 17:23:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2022-11-25 17:23:50,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2022-11-25 17:23:50,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2022-11-25 17:23:50,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2022-11-25 17:23:50,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:50,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2022-11-25 17:23:50,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,940 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 92 flow. Second operand 3 states and 559 transitions. [2022-11-25 17:23:50,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 185 flow [2022-11-25 17:23:50,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:50,942 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 91 flow [2022-11-25 17:23:50,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-11-25 17:23:50,942 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-25 17:23:50,942 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 91 flow [2022-11-25 17:23:50,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:50,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:50,943 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:50,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:23:50,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:50,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1277110136, now seen corresponding path program 1 times [2022-11-25 17:23:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:50,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263509692] [2022-11-25 17:23:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:50,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:23:51,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:51,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263509692] [2022-11-25 17:23:51,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263509692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:51,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:51,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:51,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890794057] [2022-11-25 17:23:51,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:51,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:51,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:51,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:51,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:51,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2022-11-25 17:23:51,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:51,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2022-11-25 17:23:51,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:51,280 INFO L130 PetriNetUnfolder]: 923/1479 cut-off events. [2022-11-25 17:23:51,281 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-25 17:23:51,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 1479 events. 923/1479 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7336 event pairs, 144 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 2433. Up to 925 conditions per place. [2022-11-25 17:23:51,291 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 31 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2022-11-25 17:23:51,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 181 flow [2022-11-25 17:23:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2022-11-25 17:23:51,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2022-11-25 17:23:51,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2022-11-25 17:23:51,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2022-11-25 17:23:51,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:51,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2022-11-25 17:23:51,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-25 17:23:51,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,299 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 91 flow. Second operand 3 states and 558 transitions. [2022-11-25 17:23:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 181 flow [2022-11-25 17:23:51,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:51,301 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 90 flow [2022-11-25 17:23:51,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2022-11-25 17:23:51,302 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-25 17:23:51,302 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 90 flow [2022-11-25 17:23:51,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:51,303 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:51,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 17:23:51,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1277109998, now seen corresponding path program 1 times [2022-11-25 17:23:51,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:51,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167862145] [2022-11-25 17:23:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:51,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:23:51,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:51,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167862145] [2022-11-25 17:23:51,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167862145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:51,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:51,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:51,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662728404] [2022-11-25 17:23:51,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:51,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:23:51,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:51,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:23:51,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:23:51,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 429 [2022-11-25 17:23:51,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:51,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 429 [2022-11-25 17:23:51,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:51,760 INFO L130 PetriNetUnfolder]: 1048/1654 cut-off events. [2022-11-25 17:23:51,760 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-25 17:23:51,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 1654 events. 1048/1654 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8145 event pairs, 669 based on Foata normal form. 0/1318 useless extension candidates. Maximal degree in co-relation 2777. Up to 1223 conditions per place. [2022-11-25 17:23:51,772 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 30 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-11-25 17:23:51,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 186 flow [2022-11-25 17:23:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:23:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:23:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 723 transitions. [2022-11-25 17:23:51,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42132867132867136 [2022-11-25 17:23:51,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 723 transitions. [2022-11-25 17:23:51,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 723 transitions. [2022-11-25 17:23:51,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:51,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 723 transitions. [2022-11-25 17:23:51,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,781 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,781 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 90 flow. Second operand 4 states and 723 transitions. [2022-11-25 17:23:51,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 186 flow [2022-11-25 17:23:51,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:23:51,783 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 105 flow [2022-11-25 17:23:51,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2022-11-25 17:23:51,784 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2022-11-25 17:23:51,784 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 105 flow [2022-11-25 17:23:51,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:51,785 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:51,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 17:23:51,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash -935702968, now seen corresponding path program 1 times [2022-11-25 17:23:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:51,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72988572] [2022-11-25 17:23:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:23:51,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:51,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72988572] [2022-11-25 17:23:51,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72988572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:51,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:51,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901105238] [2022-11-25 17:23:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:51,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:23:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:23:51,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:23:51,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2022-11-25 17:23:51,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:51,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:23:51,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2022-11-25 17:23:51,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:23:52,043 INFO L130 PetriNetUnfolder]: 923/1479 cut-off events. [2022-11-25 17:23:52,044 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2022-11-25 17:23:52,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 1479 events. 923/1479 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7223 event pairs, 144 based on Foata normal form. 0/1213 useless extension candidates. Maximal degree in co-relation 2673. Up to 925 conditions per place. [2022-11-25 17:23:52,058 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 31 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2022-11-25 17:23:52,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 193 flow [2022-11-25 17:23:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:23:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:23:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2022-11-25 17:23:52,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43278943278943277 [2022-11-25 17:23:52,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2022-11-25 17:23:52,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2022-11-25 17:23:52,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:23:52,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2022-11-25 17:23:52,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:52,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:52,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:52,084 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 105 flow. Second operand 3 states and 557 transitions. [2022-11-25 17:23:52,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 193 flow [2022-11-25 17:23:52,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 187 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:23:52,088 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 97 flow [2022-11-25 17:23:52,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2022-11-25 17:23:52,088 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2022-11-25 17:23:52,089 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 97 flow [2022-11-25 17:23:52,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:52,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:52,089 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 17:23:52,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 17:23:52,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:23:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1044234032, now seen corresponding path program 1 times [2022-11-25 17:23:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:52,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178501732] [2022-11-25 17:23:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:52,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:23:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:52,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:23:52,116 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:23:52,118 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 17:23:52,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-25 17:23:52,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-25 17:23:52,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-25 17:23:52,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-25 17:23:52,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-25 17:23:52,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-25 17:23:52,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-25 17:23:52,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-25 17:23:52,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-25 17:23:52,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-25 17:23:52,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-25 17:23:52,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-25 17:23:52,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-25 17:23:52,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-25 17:23:52,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-25 17:23:52,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-25 17:23:52,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 17:23:52,122 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:52,122 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:23:52,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-25 17:23:52,160 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:23:52,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 546 flow [2022-11-25 17:23:52,219 INFO L130 PetriNetUnfolder]: 33/307 cut-off events. [2022-11-25 17:23:52,220 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 17:23:52,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 307 events. 33/307 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 930 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-11-25 17:23:52,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 257 transitions, 546 flow [2022-11-25 17:23:52,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 257 transitions, 546 flow [2022-11-25 17:23:52,227 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:23:52,227 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 257 transitions, 546 flow [2022-11-25 17:23:52,227 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 257 transitions, 546 flow [2022-11-25 17:23:52,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 546 flow [2022-11-25 17:23:52,277 INFO L130 PetriNetUnfolder]: 33/307 cut-off events. [2022-11-25 17:23:52,277 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 17:23:52,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 307 events. 33/307 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 930 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-11-25 17:23:52,297 INFO L119 LiptonReduction]: Number of co-enabled transitions 41688 [2022-11-25 17:23:59,982 INFO L134 LiptonReduction]: Checked pairs total: 59448 [2022-11-25 17:23:59,982 INFO L136 LiptonReduction]: Total number of compositions: 291 [2022-11-25 17:23:59,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:23:59,984 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;@72ab7a1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:23:59,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 17:23:59,987 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-11-25 17:23:59,987 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:23:59,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:59,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:23:59,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:23:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1818867445, now seen corresponding path program 1 times [2022-11-25 17:23:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:59,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557800678] [2022-11-25 17:23:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:59,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:00,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:00,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557800678] [2022-11-25 17:24:00,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557800678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:00,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:00,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:00,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793552845] [2022-11-25 17:24:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:00,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:00,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:00,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:00,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:00,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:00,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:00,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:00,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:00,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:03,409 INFO L130 PetriNetUnfolder]: 19990/27660 cut-off events. [2022-11-25 17:24:03,409 INFO L131 PetriNetUnfolder]: For 3968/3968 co-relation queries the response was YES. [2022-11-25 17:24:03,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54446 conditions, 27660 events. 19990/27660 cut-off events. For 3968/3968 co-relation queries the response was YES. Maximal size of possible extension queue 1435. Compared 183554 event pairs, 1602 based on Foata normal form. 0/17485 useless extension candidates. Maximal degree in co-relation 6476. Up to 21950 conditions per place. [2022-11-25 17:24:03,740 INFO L137 encePairwiseOnDemand]: 537/548 looper letters, 58 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2022-11-25 17:24:03,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 325 flow [2022-11-25 17:24:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2022-11-25 17:24:03,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45316301703163014 [2022-11-25 17:24:03,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2022-11-25 17:24:03,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2022-11-25 17:24:03,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:03,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2022-11-25 17:24:03,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:03,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:03,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:03,750 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 156 flow. Second operand 3 states and 745 transitions. [2022-11-25 17:24:03,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 325 flow [2022-11-25 17:24:03,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 307 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-25 17:24:03,753 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 126 flow [2022-11-25 17:24:03,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2022-11-25 17:24:03,754 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2022-11-25 17:24:03,754 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 126 flow [2022-11-25 17:24:03,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:03,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:03,756 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:24:03,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 17:24:03,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:03,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1818867608, now seen corresponding path program 1 times [2022-11-25 17:24:03,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:03,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954157873] [2022-11-25 17:24:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:03,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:03,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:03,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954157873] [2022-11-25 17:24:03,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954157873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:03,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:03,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:03,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865244560] [2022-11-25 17:24:03,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:03,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:03,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:03,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:03,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:03,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:03,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:03,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:03,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:03,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:06,462 INFO L130 PetriNetUnfolder]: 17265/24135 cut-off events. [2022-11-25 17:24:06,462 INFO L131 PetriNetUnfolder]: For 1809/1809 co-relation queries the response was YES. [2022-11-25 17:24:06,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47165 conditions, 24135 events. 17265/24135 cut-off events. For 1809/1809 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 159499 event pairs, 1602 based on Foata normal form. 0/15732 useless extension candidates. Maximal degree in co-relation 47074. Up to 18425 conditions per place. [2022-11-25 17:24:06,638 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 57 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2022-11-25 17:24:06,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 305 flow [2022-11-25 17:24:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2022-11-25 17:24:06,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44282238442822386 [2022-11-25 17:24:06,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2022-11-25 17:24:06,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2022-11-25 17:24:06,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:06,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2022-11-25 17:24:06,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:06,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:06,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:06,648 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 126 flow. Second operand 3 states and 728 transitions. [2022-11-25 17:24:06,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 305 flow [2022-11-25 17:24:06,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:06,651 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 125 flow [2022-11-25 17:24:06,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2022-11-25 17:24:06,652 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2022-11-25 17:24:06,652 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 125 flow [2022-11-25 17:24:06,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:06,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:06,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:24:06,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 17:24:06,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:06,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1818867792, now seen corresponding path program 1 times [2022-11-25 17:24:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:06,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918419629] [2022-11-25 17:24:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:06,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:06,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:06,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918419629] [2022-11-25 17:24:06,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918419629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:06,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:06,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:06,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968210822] [2022-11-25 17:24:06,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:06,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:06,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:06,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 548 [2022-11-25 17:24:06,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:06,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:06,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 548 [2022-11-25 17:24:06,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:09,571 INFO L130 PetriNetUnfolder]: 19760/28156 cut-off events. [2022-11-25 17:24:09,571 INFO L131 PetriNetUnfolder]: For 1912/1912 co-relation queries the response was YES. [2022-11-25 17:24:09,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55892 conditions, 28156 events. 19760/28156 cut-off events. For 1912/1912 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 185524 event pairs, 13607 based on Foata normal form. 0/18723 useless extension candidates. Maximal degree in co-relation 39195. Up to 21154 conditions per place. [2022-11-25 17:24:09,861 INFO L137 encePairwiseOnDemand]: 544/548 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2022-11-25 17:24:09,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 310 flow [2022-11-25 17:24:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:09,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2022-11-25 17:24:09,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44038929440389296 [2022-11-25 17:24:09,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2022-11-25 17:24:09,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2022-11-25 17:24:09,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:09,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2022-11-25 17:24:09,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:09,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:09,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:09,873 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 125 flow. Second operand 3 states and 724 transitions. [2022-11-25 17:24:09,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 310 flow [2022-11-25 17:24:09,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:09,876 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 138 flow [2022-11-25 17:24:09,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2022-11-25 17:24:09,877 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-11-25 17:24:09,877 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 138 flow [2022-11-25 17:24:09,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:09,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:09,878 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:24:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 17:24:09,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 550329481, now seen corresponding path program 1 times [2022-11-25 17:24:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:09,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927518427] [2022-11-25 17:24:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:09,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927518427] [2022-11-25 17:24:09,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927518427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:09,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:09,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:09,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043216594] [2022-11-25 17:24:09,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:09,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:09,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:09,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:09,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:09,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:12,278 INFO L130 PetriNetUnfolder]: 17265/24135 cut-off events. [2022-11-25 17:24:12,278 INFO L131 PetriNetUnfolder]: For 3408/3408 co-relation queries the response was YES. [2022-11-25 17:24:12,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51966 conditions, 24135 events. 17265/24135 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 158563 event pairs, 1602 based on Foata normal form. 0/16532 useless extension candidates. Maximal degree in co-relation 51862. Up to 18425 conditions per place. [2022-11-25 17:24:12,435 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 57 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2022-11-25 17:24:12,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 315 flow [2022-11-25 17:24:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 727 transitions. [2022-11-25 17:24:12,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4422141119221411 [2022-11-25 17:24:12,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 727 transitions. [2022-11-25 17:24:12,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 727 transitions. [2022-11-25 17:24:12,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:12,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 727 transitions. [2022-11-25 17:24:12,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:12,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:12,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:12,446 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 138 flow. Second operand 3 states and 727 transitions. [2022-11-25 17:24:12,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 315 flow [2022-11-25 17:24:12,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 311 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:12,458 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 132 flow [2022-11-25 17:24:12,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2022-11-25 17:24:12,459 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-11-25 17:24:12,459 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 132 flow [2022-11-25 17:24:12,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:12,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:12,460 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:12,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 17:24:12,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1603844648, now seen corresponding path program 1 times [2022-11-25 17:24:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:12,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998930965] [2022-11-25 17:24:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:24:12,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:12,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998930965] [2022-11-25 17:24:12,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998930965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:12,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:12,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:12,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274050787] [2022-11-25 17:24:12,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:12,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:12,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:12,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:12,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:14,812 INFO L130 PetriNetUnfolder]: 17133/23715 cut-off events. [2022-11-25 17:24:14,813 INFO L131 PetriNetUnfolder]: For 4198/4198 co-relation queries the response was YES. [2022-11-25 17:24:14,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50740 conditions, 23715 events. 17133/23715 cut-off events. For 4198/4198 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 152401 event pairs, 1367 based on Foata normal form. 0/16249 useless extension candidates. Maximal degree in co-relation 39844. Up to 18792 conditions per place. [2022-11-25 17:24:14,958 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 55 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2022-11-25 17:24:14,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 308 flow [2022-11-25 17:24:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2022-11-25 17:24:14,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44038929440389296 [2022-11-25 17:24:14,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2022-11-25 17:24:14,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2022-11-25 17:24:14,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:14,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2022-11-25 17:24:14,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:14,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:14,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:14,970 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 132 flow. Second operand 3 states and 724 transitions. [2022-11-25 17:24:14,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 308 flow [2022-11-25 17:24:14,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:14,973 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 131 flow [2022-11-25 17:24:14,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2022-11-25 17:24:14,974 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-11-25 17:24:14,974 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 131 flow [2022-11-25 17:24:14,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:14,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:14,975 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:14,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 17:24:14,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:14,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1603844965, now seen corresponding path program 1 times [2022-11-25 17:24:14,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:14,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810612776] [2022-11-25 17:24:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:24:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:15,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810612776] [2022-11-25 17:24:15,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810612776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:15,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:15,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:15,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255315452] [2022-11-25 17:24:15,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:15,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:15,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:15,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 548 [2022-11-25 17:24:15,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:15,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:15,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 548 [2022-11-25 17:24:15,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:18,088 INFO L130 PetriNetUnfolder]: 21777/30879 cut-off events. [2022-11-25 17:24:18,089 INFO L131 PetriNetUnfolder]: For 3962/3962 co-relation queries the response was YES. [2022-11-25 17:24:18,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66496 conditions, 30879 events. 21777/30879 cut-off events. For 3962/3962 co-relation queries the response was YES. Maximal size of possible extension queue 1477. Compared 203493 event pairs, 12767 based on Foata normal form. 0/21139 useless extension candidates. Maximal degree in co-relation 52290. Up to 21154 conditions per place. [2022-11-25 17:24:18,296 INFO L137 encePairwiseOnDemand]: 544/548 looper letters, 56 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-11-25 17:24:18,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 316 flow [2022-11-25 17:24:18,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:18,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-11-25 17:24:18,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43856447688564476 [2022-11-25 17:24:18,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-11-25 17:24:18,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-11-25 17:24:18,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:18,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-11-25 17:24:18,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:18,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:18,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:18,306 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 131 flow. Second operand 3 states and 721 transitions. [2022-11-25 17:24:18,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 316 flow [2022-11-25 17:24:18,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:18,311 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 144 flow [2022-11-25 17:24:18,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2022-11-25 17:24:18,312 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-11-25 17:24:18,312 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 144 flow [2022-11-25 17:24:18,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:18,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:18,313 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:18,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 17:24:18,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:18,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1603844791, now seen corresponding path program 1 times [2022-11-25 17:24:18,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:18,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508592217] [2022-11-25 17:24:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:18,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:24:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:18,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508592217] [2022-11-25 17:24:18,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508592217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:18,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:18,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844912929] [2022-11-25 17:24:18,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:18,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:18,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:18,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:18,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:18,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:18,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:18,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:18,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:18,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:20,876 INFO L130 PetriNetUnfolder]: 16821/22779 cut-off events. [2022-11-25 17:24:20,876 INFO L131 PetriNetUnfolder]: For 5265/5265 co-relation queries the response was YES. [2022-11-25 17:24:20,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54593 conditions, 22779 events. 16821/22779 cut-off events. For 5265/5265 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 134102 event pairs, 3215 based on Foata normal form. 1368/17677 useless extension candidates. Maximal degree in co-relation 43054. Up to 18792 conditions per place. [2022-11-25 17:24:21,043 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 55 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2022-11-25 17:24:21,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 319 flow [2022-11-25 17:24:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:21,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2022-11-25 17:24:21,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4397810218978102 [2022-11-25 17:24:21,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2022-11-25 17:24:21,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2022-11-25 17:24:21,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:21,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2022-11-25 17:24:21,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:21,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:21,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:21,054 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 144 flow. Second operand 3 states and 723 transitions. [2022-11-25 17:24:21,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 319 flow [2022-11-25 17:24:21,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 315 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:21,060 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 140 flow [2022-11-25 17:24:21,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2022-11-25 17:24:21,061 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-11-25 17:24:21,061 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 140 flow [2022-11-25 17:24:21,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:21,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:21,062 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:21,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 17:24:21,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1820411735, now seen corresponding path program 1 times [2022-11-25 17:24:21,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:21,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931715402] [2022-11-25 17:24:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:24:21,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:21,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931715402] [2022-11-25 17:24:21,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931715402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:21,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:21,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:21,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802293643] [2022-11-25 17:24:21,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:21,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:21,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:21,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:21,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:21,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:21,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:21,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:21,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:21,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:23,140 INFO L130 PetriNetUnfolder]: 14487/19761 cut-off events. [2022-11-25 17:24:23,140 INFO L131 PetriNetUnfolder]: For 4581/4581 co-relation queries the response was YES. [2022-11-25 17:24:23,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46361 conditions, 19761 events. 14487/19761 cut-off events. For 4581/4581 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 115493 event pairs, 2855 based on Foata normal form. 0/14629 useless extension candidates. Maximal degree in co-relation 36536. Up to 15774 conditions per place. [2022-11-25 17:24:23,277 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 54 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2022-11-25 17:24:23,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 311 flow [2022-11-25 17:24:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2022-11-25 17:24:23,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4391727493917275 [2022-11-25 17:24:23,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2022-11-25 17:24:23,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2022-11-25 17:24:23,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:23,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2022-11-25 17:24:23,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:23,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:23,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:23,289 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 140 flow. Second operand 3 states and 722 transitions. [2022-11-25 17:24:23,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 311 flow [2022-11-25 17:24:23,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:23,296 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 137 flow [2022-11-25 17:24:23,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2022-11-25 17:24:23,302 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-11-25 17:24:23,302 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 137 flow [2022-11-25 17:24:23,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:23,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:23,303 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:23,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-25 17:24:23,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:23,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1470172945, now seen corresponding path program 1 times [2022-11-25 17:24:23,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:23,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847097086] [2022-11-25 17:24:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:23,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:24:23,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:23,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847097086] [2022-11-25 17:24:23,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847097086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:23,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:23,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827742998] [2022-11-25 17:24:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:23,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:23,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:23,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:23,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:23,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:23,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:23,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:23,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:25,373 INFO L130 PetriNetUnfolder]: 14535/19941 cut-off events. [2022-11-25 17:24:25,374 INFO L131 PetriNetUnfolder]: For 4895/4895 co-relation queries the response was YES. [2022-11-25 17:24:25,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47225 conditions, 19941 events. 14535/19941 cut-off events. For 4895/4895 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 119183 event pairs, 1991 based on Foata normal form. 0/14756 useless extension candidates. Maximal degree in co-relation 37256. Up to 15912 conditions per place. [2022-11-25 17:24:25,501 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 52 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2022-11-25 17:24:25,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 307 flow [2022-11-25 17:24:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-11-25 17:24:25,503 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4373479318734793 [2022-11-25 17:24:25,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-11-25 17:24:25,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-11-25 17:24:25,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:25,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-11-25 17:24:25,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:25,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:25,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:25,510 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 137 flow. Second operand 3 states and 719 transitions. [2022-11-25 17:24:25,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 307 flow [2022-11-25 17:24:25,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:25,516 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 136 flow [2022-11-25 17:24:25,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2022-11-25 17:24:25,517 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-11-25 17:24:25,518 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 136 flow [2022-11-25 17:24:25,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:25,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:25,518 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:25,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-25 17:24:25,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1470173236, now seen corresponding path program 1 times [2022-11-25 17:24:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:25,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280458109] [2022-11-25 17:24:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:24:25,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:25,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280458109] [2022-11-25 17:24:25,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280458109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:25,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:25,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:25,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936656980] [2022-11-25 17:24:25,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:25,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:25,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:25,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:25,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:25,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:25,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:25,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:25,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:25,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:27,684 INFO L130 PetriNetUnfolder]: 12699/17817 cut-off events. [2022-11-25 17:24:27,685 INFO L131 PetriNetUnfolder]: For 3586/3586 co-relation queries the response was YES. [2022-11-25 17:24:27,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41861 conditions, 17817 events. 12699/17817 cut-off events. For 3586/3586 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 109937 event pairs, 1271 based on Foata normal form. 0/13472 useless extension candidates. Maximal degree in co-relation 33074. Up to 13356 conditions per place. [2022-11-25 17:24:27,816 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 51 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-11-25 17:24:27,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 303 flow [2022-11-25 17:24:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 718 transitions. [2022-11-25 17:24:27,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4367396593673966 [2022-11-25 17:24:27,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 718 transitions. [2022-11-25 17:24:27,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 718 transitions. [2022-11-25 17:24:27,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:27,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 718 transitions. [2022-11-25 17:24:27,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:27,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:27,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:27,825 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 136 flow. Second operand 3 states and 718 transitions. [2022-11-25 17:24:27,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 303 flow [2022-11-25 17:24:27,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:27,834 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 135 flow [2022-11-25 17:24:27,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2022-11-25 17:24:27,834 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-11-25 17:24:27,835 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 135 flow [2022-11-25 17:24:27,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:27,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:27,835 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:27,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-25 17:24:27,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1470173395, now seen corresponding path program 1 times [2022-11-25 17:24:27,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:27,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947516713] [2022-11-25 17:24:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:27,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:24:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:27,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947516713] [2022-11-25 17:24:27,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947516713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:27,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:27,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058190393] [2022-11-25 17:24:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:27,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:27,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:27,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 548 [2022-11-25 17:24:27,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:27,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:27,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 548 [2022-11-25 17:24:27,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:30,152 INFO L130 PetriNetUnfolder]: 14463/20445 cut-off events. [2022-11-25 17:24:30,152 INFO L131 PetriNetUnfolder]: For 4078/4078 co-relation queries the response was YES. [2022-11-25 17:24:30,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49025 conditions, 20445 events. 14463/20445 cut-off events. For 4078/4078 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 125766 event pairs, 9851 based on Foata normal form. 0/15620 useless extension candidates. Maximal degree in co-relation 38756. Up to 15580 conditions per place. [2022-11-25 17:24:30,287 INFO L137 encePairwiseOnDemand]: 544/548 looper letters, 51 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-11-25 17:24:30,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 308 flow [2022-11-25 17:24:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-11-25 17:24:30,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4343065693430657 [2022-11-25 17:24:30,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-11-25 17:24:30,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-11-25 17:24:30,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:30,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-11-25 17:24:30,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:30,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:30,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:30,298 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 135 flow. Second operand 3 states and 714 transitions. [2022-11-25 17:24:30,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 308 flow [2022-11-25 17:24:30,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:30,307 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 148 flow [2022-11-25 17:24:30,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2022-11-25 17:24:30,308 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-11-25 17:24:30,308 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 148 flow [2022-11-25 17:24:30,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:30,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:30,308 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:30,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-25 17:24:30,309 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:30,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1669261960, now seen corresponding path program 1 times [2022-11-25 17:24:30,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:30,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689501565] [2022-11-25 17:24:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:30,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:24:30,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:30,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689501565] [2022-11-25 17:24:30,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689501565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:30,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:30,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:30,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959013076] [2022-11-25 17:24:30,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:30,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:30,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:30,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:30,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:30,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:30,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:30,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:30,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:32,607 INFO L130 PetriNetUnfolder]: 12555/17385 cut-off events. [2022-11-25 17:24:32,607 INFO L131 PetriNetUnfolder]: For 4996/4996 co-relation queries the response was YES. [2022-11-25 17:24:32,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44886 conditions, 17385 events. 12555/17385 cut-off events. For 4996/4996 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 101910 event pairs, 1847 based on Foata normal form. 0/13760 useless extension candidates. Maximal degree in co-relation 35594. Up to 13356 conditions per place. [2022-11-25 17:24:32,712 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 51 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-11-25 17:24:32,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 313 flow [2022-11-25 17:24:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2022-11-25 17:24:32,714 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43613138686131386 [2022-11-25 17:24:32,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2022-11-25 17:24:32,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2022-11-25 17:24:32,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:32,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2022-11-25 17:24:32,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:32,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:32,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:32,720 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 148 flow. Second operand 3 states and 717 transitions. [2022-11-25 17:24:32,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 313 flow [2022-11-25 17:24:32,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 309 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:32,733 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 142 flow [2022-11-25 17:24:32,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2022-11-25 17:24:32,734 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-11-25 17:24:32,734 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 142 flow [2022-11-25 17:24:32,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:32,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:32,735 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:32,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-25 17:24:32,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:32,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:32,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1427199201, now seen corresponding path program 1 times [2022-11-25 17:24:32,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:32,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446396473] [2022-11-25 17:24:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:32,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:24:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:32,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446396473] [2022-11-25 17:24:32,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446396473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:32,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:32,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:32,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052230603] [2022-11-25 17:24:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:32,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:32,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:32,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:32,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:32,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:32,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:34,850 INFO L130 PetriNetUnfolder]: 12555/17745 cut-off events. [2022-11-25 17:24:34,851 INFO L131 PetriNetUnfolder]: For 5224/5224 co-relation queries the response was YES. [2022-11-25 17:24:34,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44814 conditions, 17745 events. 12555/17745 cut-off events. For 5224/5224 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 106628 event pairs, 2075 based on Foata normal form. 0/14054 useless extension candidates. Maximal degree in co-relation 35534. Up to 12096 conditions per place. [2022-11-25 17:24:34,968 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 49 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2022-11-25 17:24:34,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 306 flow [2022-11-25 17:24:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-11-25 17:24:34,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4343065693430657 [2022-11-25 17:24:34,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-11-25 17:24:34,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-11-25 17:24:34,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:34,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-11-25 17:24:34,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:34,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:34,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:34,977 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 142 flow. Second operand 3 states and 714 transitions. [2022-11-25 17:24:34,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 306 flow [2022-11-25 17:24:34,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:24:34,986 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 141 flow [2022-11-25 17:24:34,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2022-11-25 17:24:34,987 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-11-25 17:24:34,987 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 141 flow [2022-11-25 17:24:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:34,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:34,988 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:24:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-25 17:24:34,988 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:24:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1427198801, now seen corresponding path program 1 times [2022-11-25 17:24:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:34,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769894987] [2022-11-25 17:24:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:24:35,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:35,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769894987] [2022-11-25 17:24:35,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769894987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:35,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:35,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283413506] [2022-11-25 17:24:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:35,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:35,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 548 [2022-11-25 17:24:35,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:35,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:35,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 548 [2022-11-25 17:24:35,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand