./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/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_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/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_ef1d6109-fe94-42c1-aa81-f7f67dd61120/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 a5c5d988dfb4f4b1be585294c8ab62a2f94aeccbe1abf374969f6d5f0322e73d --- 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 15:27:50,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:27:50,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:27:50,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:27:50,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:27:50,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:27:50,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:27:50,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:27:50,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:27:50,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:27:50,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:27:50,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:27:50,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:27:50,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:27:50,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:27:50,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:27:50,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:27:50,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:27:50,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:27:50,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:27:50,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:27:50,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:27:50,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:27:50,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:27:50,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:27:50,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:27:50,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:27:50,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:27:50,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:27:50,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:27:50,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:27:50,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:27:50,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:27:50,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:27:50,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:27:50,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:27:50,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:27:50,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:27:50,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:27:50,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:27:50,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:27:50,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 15:27:50,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:27:50,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:27:50,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:27:50,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:27:50,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:27:50,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:27:50,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:27:50,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:27:50,530 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:27:50,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:27:50,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:27:50,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:27:50,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:27:50,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:27:50,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:27:50,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:27:50,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:27:50,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:27:50,533 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 15:27:50,534 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:27:50,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:27:50,534 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:27:50,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:27:50,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:27:50,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:27:50,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:27:50,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:27:50,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:27:50,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:27:50,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:27:50,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:27:50,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:27:50,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:27:50,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:27:50,537 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:27:50,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:27:50,538 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_ef1d6109-fe94-42c1-aa81-f7f67dd61120/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5c5d988dfb4f4b1be585294c8ab62a2f94aeccbe1abf374969f6d5f0322e73d [2022-11-25 15:27:50,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:27:50,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:27:50,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:27:50,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:27:50,991 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:27:50,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/fib_unsafe-12.i [2022-11-25 15:27:54,245 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:27:54,550 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:27:54,554 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/sv-benchmarks/c/pthread/fib_unsafe-12.i [2022-11-25 15:27:54,581 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/data/a17abcd18/04b82f14a40c4e418bfc528de3d08271/FLAG151556ac3 [2022-11-25 15:27:54,603 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/data/a17abcd18/04b82f14a40c4e418bfc528de3d08271 [2022-11-25 15:27:54,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:27:54,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:27:54,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:27:54,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:27:54,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:27:54,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:27:54" (1/1) ... [2022-11-25 15:27:54,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34851926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:54, skipping insertion in model container [2022-11-25 15:27:54,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:27:54" (1/1) ... [2022-11-25 15:27:54,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:27:54,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:27:55,138 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_ef1d6109-fe94-42c1-aa81-f7f67dd61120/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2022-11-25 15:27:55,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:27:55,192 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:27:55,264 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_ef1d6109-fe94-42c1-aa81-f7f67dd61120/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2022-11-25 15:27:55,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:27:55,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:27:55,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:27:55,331 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:27:55,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55 WrapperNode [2022-11-25 15:27:55,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:27:55,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:27:55,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:27:55,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:27:55,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,378 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-25 15:27:55,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:27:55,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:27:55,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:27:55,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:27:55,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,409 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:27:55,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:27:55,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:27:55,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:27:55,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (1/1) ... [2022-11-25 15:27:55,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:27:55,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:27:55,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:27:55,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:27:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 15:27:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 15:27:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 15:27:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 15:27:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:27:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:27:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:27:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:27:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:27:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:27:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:27:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:27:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:27:55,510 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 15:27:55,683 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:27:55,685 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:27:55,990 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:27:56,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:27:56,036 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 15:27:56,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:27:56 BoogieIcfgContainer [2022-11-25 15:27:56,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:27:56,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:27:56,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:27:56,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:27:56,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:27:54" (1/3) ... [2022-11-25 15:27:56,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b73f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:27:56, skipping insertion in model container [2022-11-25 15:27:56,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:55" (2/3) ... [2022-11-25 15:27:56,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b73f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:27:56, skipping insertion in model container [2022-11-25 15:27:56,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:27:56" (3/3) ... [2022-11-25 15:27:56,063 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-12.i [2022-11-25 15:27:56,081 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:27:56,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:27:56,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-25 15:27:56,099 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:27:56,253 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 15:27:56,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-25 15:27:56,427 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-25 15:27:56,428 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:27:56,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-25 15:27:56,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-25 15:27:56,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-25 15:27:56,449 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:27:56,480 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 118 transitions, 242 flow [2022-11-25 15:27:56,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 118 transitions, 242 flow [2022-11-25 15:27:56,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 118 transitions, 242 flow [2022-11-25 15:27:56,558 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-25 15:27:56,558 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:27:56,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-25 15:27:56,565 INFO L119 LiptonReduction]: Number of co-enabled transitions 3978 [2022-11-25 15:28:01,526 INFO L134 LiptonReduction]: Checked pairs total: 3367 [2022-11-25 15:28:01,526 INFO L136 LiptonReduction]: Total number of compositions: 118 [2022-11-25 15:28:01,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:28:01,574 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;@394aca6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:28:01,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 15:28:01,583 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-11-25 15:28:01,583 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:28:01,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:01,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:28:01,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:01,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash 14200660, now seen corresponding path program 1 times [2022-11-25 15:28:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:01,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060832282] [2022-11-25 15:28:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:01,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:01,891 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 15:28:01,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:01,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060832282] [2022-11-25 15:28:01,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060832282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:01,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:01,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:28:01,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173267104] [2022-11-25 15:28:01,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:01,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:01,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 238 [2022-11-25 15:28:01,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 15:28:01,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:01,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 238 [2022-11-25 15:28:01,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:02,178 INFO L130 PetriNetUnfolder]: 681/1006 cut-off events. [2022-11-25 15:28:02,178 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 15:28:02,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 1006 events. 681/1006 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 4300 event pairs, 141 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 2026. Up to 751 conditions per place. [2022-11-25 15:28:02,190 INFO L137 encePairwiseOnDemand]: 228/238 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2022-11-25 15:28:02,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 40 transitions, 169 flow [2022-11-25 15:28:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:28:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-11-25 15:28:02,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2022-11-25 15:28:02,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-11-25 15:28:02,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-11-25 15:28:02,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:02,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-11-25 15:28:02,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 15:28:02,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:02,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:02,229 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 372 transitions. [2022-11-25 15:28:02,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 40 transitions, 169 flow [2022-11-25 15:28:02,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:02,235 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 83 flow [2022-11-25 15:28:02,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2022-11-25 15:28:02,242 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2022-11-25 15:28:02,242 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 83 flow [2022-11-25 15:28:02,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 15:28:02,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:02,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:28:02,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:28:02,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:02,244 INFO L85 PathProgramCache]: Analyzing trace with hash 14200705, now seen corresponding path program 1 times [2022-11-25 15:28:02,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:02,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941139831] [2022-11-25 15:28:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:02,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:02,382 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 15:28:02,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:02,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941139831] [2022-11-25 15:28:02,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941139831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:02,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:02,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:28:02,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757690624] [2022-11-25 15:28:02,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:02,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:02,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 15:28:02,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 15:28:02,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:02,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 15:28:02,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:02,620 INFO L130 PetriNetUnfolder]: 779/1168 cut-off events. [2022-11-25 15:28:02,621 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-11-25 15:28:02,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1168 events. 779/1168 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5301 event pairs, 321 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 2808. Up to 617 conditions per place. [2022-11-25 15:28:02,633 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-25 15:28:02,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 208 flow [2022-11-25 15:28:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:28:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-11-25 15:28:02,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2022-11-25 15:28:02,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-11-25 15:28:02,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-11-25 15:28:02,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:02,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-11-25 15:28:02,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states 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 15:28:02,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:02,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:02,650 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 83 flow. Second operand 3 states and 356 transitions. [2022-11-25 15:28:02,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 208 flow [2022-11-25 15:28:02,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:28:02,654 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 93 flow [2022-11-25 15:28:02,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2022-11-25 15:28:02,655 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-11-25 15:28:02,655 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 93 flow [2022-11-25 15:28:02,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 15:28:02,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:02,656 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:28:02,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:28:02,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:02,660 INFO L85 PathProgramCache]: Analyzing trace with hash 14200659, now seen corresponding path program 1 times [2022-11-25 15:28:02,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:02,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150489220] [2022-11-25 15:28:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:02,792 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 15:28:02,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:02,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150489220] [2022-11-25 15:28:02,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150489220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:02,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:02,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:28:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520141967] [2022-11-25 15:28:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:02,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:02,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 15:28:02,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 15:28:02,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:02,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 15:28:02,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:03,046 INFO L130 PetriNetUnfolder]: 853/1268 cut-off events. [2022-11-25 15:28:03,046 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2022-11-25 15:28:03,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 1268 events. 853/1268 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5474 event pairs, 247 based on Foata normal form. 46/768 useless extension candidates. Maximal degree in co-relation 3318. Up to 883 conditions per place. [2022-11-25 15:28:03,102 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2022-11-25 15:28:03,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 223 flow [2022-11-25 15:28:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:28:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-25 15:28:03,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2022-11-25 15:28:03,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-25 15:28:03,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-25 15:28:03,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:03,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-25 15:28:03,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 15:28:03,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:03,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:03,112 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 93 flow. Second operand 3 states and 354 transitions. [2022-11-25 15:28:03,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 223 flow [2022-11-25 15:28:03,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:28:03,115 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 121 flow [2022-11-25 15:28:03,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2022-11-25 15:28:03,116 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-11-25 15:28:03,116 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 121 flow [2022-11-25 15:28:03,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 15:28:03,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:03,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:28:03,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:28:03,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:03,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash 440222235, now seen corresponding path program 1 times [2022-11-25 15:28:03,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:03,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637377124] [2022-11-25 15:28:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:03,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:03,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637377124] [2022-11-25 15:28:03,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637377124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:03,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707038215] [2022-11-25 15:28:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:03,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:03,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:03,229 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:03,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:28:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:03,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:28:03,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:03,436 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 15:28:03,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:03,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707038215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:03,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:03,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 15:28:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97982684] [2022-11-25 15:28:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:28:03,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 15:28:03,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 15:28:03,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:03,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 15:28:03,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:03,688 INFO L130 PetriNetUnfolder]: 737/1096 cut-off events. [2022-11-25 15:28:03,688 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2022-11-25 15:28:03,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 1096 events. 737/1096 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4632 event pairs, 295 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 3098. Up to 656 conditions per place. [2022-11-25 15:28:03,698 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 40 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2022-11-25 15:28:03,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 251 flow [2022-11-25 15:28:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:28:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2022-11-25 15:28:03,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2022-11-25 15:28:03,701 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2022-11-25 15:28:03,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2022-11-25 15:28:03,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:03,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2022-11-25 15:28:03,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 15:28:03,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 15:28:03,706 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 15:28:03,706 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 121 flow. Second operand 4 states and 459 transitions. [2022-11-25 15:28:03,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 251 flow [2022-11-25 15:28:03,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:28:03,709 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 116 flow [2022-11-25 15:28:03,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2022-11-25 15:28:03,712 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-11-25 15:28:03,712 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 116 flow [2022-11-25 15:28:03,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 15:28:03,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:03,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:28:03,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:03,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:03,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash 440222190, now seen corresponding path program 1 times [2022-11-25 15:28:03,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:03,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618164059] [2022-11-25 15:28:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:03,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:04,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618164059] [2022-11-25 15:28:04,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618164059] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:04,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147801407] [2022-11-25 15:28:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:04,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:04,041 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:04,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:28:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:04,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:28:04,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:04,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:04,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147801407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:04,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:04,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-25 15:28:04,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656929689] [2022-11-25 15:28:04,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:04,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:28:04,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:04,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:28:04,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:04,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 15:28:04,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 15:28:04,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:04,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 15:28:04,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:04,735 INFO L130 PetriNetUnfolder]: 1451/2176 cut-off events. [2022-11-25 15:28:04,735 INFO L131 PetriNetUnfolder]: For 842/842 co-relation queries the response was YES. [2022-11-25 15:28:04,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6182 conditions, 2176 events. 1451/2176 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10541 event pairs, 99 based on Foata normal form. 234/1768 useless extension candidates. Maximal degree in co-relation 6166. Up to 1029 conditions per place. [2022-11-25 15:28:04,754 INFO L137 encePairwiseOnDemand]: 230/238 looper letters, 71 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2022-11-25 15:28:04,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 92 transitions, 516 flow [2022-11-25 15:28:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:28:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:28:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2022-11-25 15:28:04,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2022-11-25 15:28:04,757 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2022-11-25 15:28:04,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2022-11-25 15:28:04,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:04,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2022-11-25 15:28:04,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 15:28:04,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states 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 15:28:04,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states 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 15:28:04,765 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 116 flow. Second operand 6 states and 707 transitions. [2022-11-25 15:28:04,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 92 transitions, 516 flow [2022-11-25 15:28:04,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 92 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:04,770 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 320 flow [2022-11-25 15:28:04,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2022-11-25 15:28:04,774 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-11-25 15:28:04,774 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 320 flow [2022-11-25 15:28:04,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 15:28:04,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:04,776 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:28:04,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:04,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:04,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:04,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash 763504552, now seen corresponding path program 1 times [2022-11-25 15:28:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:04,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074515] [2022-11-25 15:28:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:04,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:05,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:05,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074515] [2022-11-25 15:28:05,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:05,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:05,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:28:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328676293] [2022-11-25 15:28:05,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:05,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:05,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 15:28:05,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 15:28:05,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:05,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 15:28:05,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:05,377 INFO L130 PetriNetUnfolder]: 1199/1810 cut-off events. [2022-11-25 15:28:05,377 INFO L131 PetriNetUnfolder]: For 2075/2075 co-relation queries the response was YES. [2022-11-25 15:28:05,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 1810 events. 1199/1810 cut-off events. For 2075/2075 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8527 event pairs, 308 based on Foata normal form. 66/1376 useless extension candidates. Maximal degree in co-relation 6608. Up to 1381 conditions per place. [2022-11-25 15:28:05,394 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-11-25 15:28:05,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 443 flow [2022-11-25 15:28:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:28:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-25 15:28:05,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-11-25 15:28:05,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-25 15:28:05,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-25 15:28:05,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:05,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-25 15:28:05,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 15:28:05,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:05,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:05,400 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 320 flow. Second operand 3 states and 350 transitions. [2022-11-25 15:28:05,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 443 flow [2022-11-25 15:28:05,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 412 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-11-25 15:28:05,410 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 266 flow [2022-11-25 15:28:05,410 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2022-11-25 15:28:05,411 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2022-11-25 15:28:05,411 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 266 flow [2022-11-25 15:28:05,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 15:28:05,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:05,412 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:28:05,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:28:05,412 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:05,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash 763507164, now seen corresponding path program 1 times [2022-11-25 15:28:05,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:05,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637957021] [2022-11-25 15:28:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:05,455 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 15:28:05,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:05,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637957021] [2022-11-25 15:28:05,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637957021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:05,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:05,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:28:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200375999] [2022-11-25 15:28:05,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:05,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:05,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:05,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 238 [2022-11-25 15:28:05,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 15:28:05,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:05,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 238 [2022-11-25 15:28:05,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:05,911 INFO L130 PetriNetUnfolder]: 1885/2790 cut-off events. [2022-11-25 15:28:05,911 INFO L131 PetriNetUnfolder]: For 5619/5619 co-relation queries the response was YES. [2022-11-25 15:28:05,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10024 conditions, 2790 events. 1885/2790 cut-off events. For 5619/5619 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14201 event pairs, 483 based on Foata normal form. 0/1942 useless extension candidates. Maximal degree in co-relation 10002. Up to 1667 conditions per place. [2022-11-25 15:28:05,946 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 69 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2022-11-25 15:28:05,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 649 flow [2022-11-25 15:28:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:28:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-11-25 15:28:05,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49719887955182074 [2022-11-25 15:28:05,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-11-25 15:28:05,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-11-25 15:28:05,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:05,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-11-25 15:28:05,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 15:28:05,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:05,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:05,951 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 266 flow. Second operand 3 states and 355 transitions. [2022-11-25 15:28:05,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 649 flow [2022-11-25 15:28:05,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 627 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:05,962 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 273 flow [2022-11-25 15:28:05,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2022-11-25 15:28:05,963 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2022-11-25 15:28:05,963 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 273 flow [2022-11-25 15:28:05,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 15:28:05,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:05,963 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:28:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:28:05,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 763507099, now seen corresponding path program 1 times [2022-11-25 15:28:05,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:05,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568661681] [2022-11-25 15:28:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:06,034 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 15:28:06,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:06,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568661681] [2022-11-25 15:28:06,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568661681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:06,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:06,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:28:06,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336970265] [2022-11-25 15:28:06,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:06,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:06,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:06,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:06,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:06,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 238 [2022-11-25 15:28:06,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 15:28:06,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:06,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 238 [2022-11-25 15:28:06,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:06,485 INFO L130 PetriNetUnfolder]: 1689/2496 cut-off events. [2022-11-25 15:28:06,485 INFO L131 PetriNetUnfolder]: For 4980/4980 co-relation queries the response was YES. [2022-11-25 15:28:06,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9551 conditions, 2496 events. 1689/2496 cut-off events. For 4980/4980 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12492 event pairs, 343 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 9528. Up to 1667 conditions per place. [2022-11-25 15:28:06,520 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 68 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2022-11-25 15:28:06,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 638 flow [2022-11-25 15:28:06,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:28:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-25 15:28:06,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2022-11-25 15:28:06,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-25 15:28:06,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-25 15:28:06,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:06,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-25 15:28:06,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 15:28:06,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:06,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:06,529 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 273 flow. Second operand 3 states and 354 transitions. [2022-11-25 15:28:06,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 638 flow [2022-11-25 15:28:06,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:28:06,538 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 281 flow [2022-11-25 15:28:06,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2022-11-25 15:28:06,541 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-11-25 15:28:06,542 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 281 flow [2022-11-25 15:28:06,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 15:28:06,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:06,543 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:28:06,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:28:06,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:06,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash 763507195, now seen corresponding path program 1 times [2022-11-25 15:28:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:06,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582288800] [2022-11-25 15:28:06,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:06,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:06,622 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 15:28:06,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:06,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582288800] [2022-11-25 15:28:06,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582288800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:06,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:06,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:28:06,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924667522] [2022-11-25 15:28:06,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:06,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:06,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:06,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:06,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 15:28:06,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 15:28:06,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:06,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 15:28:06,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:06,972 INFO L130 PetriNetUnfolder]: 1395/2104 cut-off events. [2022-11-25 15:28:06,972 INFO L131 PetriNetUnfolder]: For 4818/4818 co-relation queries the response was YES. [2022-11-25 15:28:07,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8296 conditions, 2104 events. 1395/2104 cut-off events. For 4818/4818 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10516 event pairs, 203 based on Foata normal form. 98/1880 useless extension candidates. Maximal degree in co-relation 8271. Up to 1569 conditions per place. [2022-11-25 15:28:07,021 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 67 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-11-25 15:28:07,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 633 flow [2022-11-25 15:28:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:07,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:28:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-25 15:28:07,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-11-25 15:28:07,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-25 15:28:07,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-25 15:28:07,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:07,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-25 15:28:07,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 15:28:07,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:07,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 15:28:07,029 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 281 flow. Second operand 3 states and 350 transitions. [2022-11-25 15:28:07,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 633 flow [2022-11-25 15:28:07,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 69 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:07,037 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 278 flow [2022-11-25 15:28:07,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2022-11-25 15:28:07,038 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-11-25 15:28:07,038 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 278 flow [2022-11-25 15:28:07,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 15:28:07,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:07,039 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:07,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:28:07,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:07,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash -711518776, now seen corresponding path program 1 times [2022-11-25 15:28:07,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:07,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161112756] [2022-11-25 15:28:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:07,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:07,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161112756] [2022-11-25 15:28:07,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161112756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486829469] [2022-11-25 15:28:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:07,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:07,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:07,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:07,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:28:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:07,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:28:07,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:07,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:07,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486829469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:07,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:07,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-25 15:28:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680040912] [2022-11-25 15:28:07,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:07,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:28:07,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:07,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:28:07,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:28:07,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 15:28:07,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 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 15:28:07,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:07,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 15:28:07,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:07,679 INFO L130 PetriNetUnfolder]: 1423/2167 cut-off events. [2022-11-25 15:28:07,679 INFO L131 PetriNetUnfolder]: For 3064/3064 co-relation queries the response was YES. [2022-11-25 15:28:07,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8678 conditions, 2167 events. 1423/2167 cut-off events. For 3064/3064 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10728 event pairs, 318 based on Foata normal form. 0/1961 useless extension candidates. Maximal degree in co-relation 8652. Up to 1078 conditions per place. [2022-11-25 15:28:07,698 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 63 selfloop transitions, 10 changer transitions 0/73 dead transitions. [2022-11-25 15:28:07,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 617 flow [2022-11-25 15:28:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:28:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:28:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2022-11-25 15:28:07,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2022-11-25 15:28:07,701 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2022-11-25 15:28:07,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2022-11-25 15:28:07,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:07,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2022-11-25 15:28:07,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:28:07,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states 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 15:28:07,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states 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 15:28:07,706 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 278 flow. Second operand 5 states and 574 transitions. [2022-11-25 15:28:07,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 617 flow [2022-11-25 15:28:07,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 609 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:07,715 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 305 flow [2022-11-25 15:28:07,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2022-11-25 15:28:07,716 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 15:28:07,717 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 305 flow [2022-11-25 15:28:07,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 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 15:28:07,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:07,717 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:07,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:07,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 15:28:07,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:07,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:07,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2101162265, now seen corresponding path program 1 times [2022-11-25 15:28:07,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:07,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415628779] [2022-11-25 15:28:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:07,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:07,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:07,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415628779] [2022-11-25 15:28:07,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415628779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:07,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756639561] [2022-11-25 15:28:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:07,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:07,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:07,994 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:08,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:28:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:08,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:28:08,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:08,164 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 15:28:08,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:08,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756639561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:08,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:08,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-25 15:28:08,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007652391] [2022-11-25 15:28:08,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:08,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:08,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:08,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:08,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:28:08,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 238 [2022-11-25 15:28:08,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:28:08,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:08,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 238 [2022-11-25 15:28:08,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:08,497 INFO L130 PetriNetUnfolder]: 1129/1684 cut-off events. [2022-11-25 15:28:08,498 INFO L131 PetriNetUnfolder]: For 4645/4645 co-relation queries the response was YES. [2022-11-25 15:28:08,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7296 conditions, 1684 events. 1129/1684 cut-off events. For 4645/4645 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7536 event pairs, 411 based on Foata normal form. 280/1812 useless extension candidates. Maximal degree in co-relation 7269. Up to 942 conditions per place. [2022-11-25 15:28:08,514 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 38 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2022-11-25 15:28:08,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 464 flow [2022-11-25 15:28:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:28:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2022-11-25 15:28:08,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4737394957983193 [2022-11-25 15:28:08,517 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2022-11-25 15:28:08,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2022-11-25 15:28:08,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:08,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2022-11-25 15:28:08,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 15:28:08,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 15:28:08,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 15:28:08,522 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 305 flow. Second operand 4 states and 451 transitions. [2022-11-25 15:28:08,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 464 flow [2022-11-25 15:28:08,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 439 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-25 15:28:08,537 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 331 flow [2022-11-25 15:28:08,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2022-11-25 15:28:08,538 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 15:28:08,539 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 331 flow [2022-11-25 15:28:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:28:08,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:08,539 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:08,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 15:28:08,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 15:28:08,745 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:08,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080339, now seen corresponding path program 1 times [2022-11-25 15:28:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:08,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244893119] [2022-11-25 15:28:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:08,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244893119] [2022-11-25 15:28:08,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244893119] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:08,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588879083] [2022-11-25 15:28:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:08,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:08,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:08,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:28:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:08,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:28:08,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:09,043 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 15:28:09,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:09,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588879083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:09,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:09,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-25 15:28:09,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332247431] [2022-11-25 15:28:09,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:09,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:09,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:09,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:09,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:28:09,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 15:28:09,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 15:28:09,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:09,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 15:28:09,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:09,308 INFO L130 PetriNetUnfolder]: 971/1450 cut-off events. [2022-11-25 15:28:09,309 INFO L131 PetriNetUnfolder]: For 6039/6039 co-relation queries the response was YES. [2022-11-25 15:28:09,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 1450 events. 971/1450 cut-off events. For 6039/6039 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6449 event pairs, 173 based on Foata normal form. 76/1374 useless extension candidates. Maximal degree in co-relation 6610. Up to 1012 conditions per place. [2022-11-25 15:28:09,322 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 62 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2022-11-25 15:28:09,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 731 flow [2022-11-25 15:28:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:28:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2022-11-25 15:28:09,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4695378151260504 [2022-11-25 15:28:09,325 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2022-11-25 15:28:09,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2022-11-25 15:28:09,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:09,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2022-11-25 15:28:09,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 15:28:09,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 15:28:09,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 15:28:09,330 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 331 flow. Second operand 4 states and 447 transitions. [2022-11-25 15:28:09,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 731 flow [2022-11-25 15:28:09,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 724 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:09,338 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 326 flow [2022-11-25 15:28:09,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2022-11-25 15:28:09,339 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 15:28:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 326 flow [2022-11-25 15:28:09,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 15:28:09,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:09,340 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:09,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:09,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 15:28:09,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:09,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080274, now seen corresponding path program 1 times [2022-11-25 15:28:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:09,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659641039] [2022-11-25 15:28:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:09,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659641039] [2022-11-25 15:28:09,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659641039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:09,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635344300] [2022-11-25 15:28:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:09,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:09,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:09,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:09,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:28:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:09,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:28:09,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:09,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:09,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635344300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:09,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:09,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-25 15:28:09,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483758197] [2022-11-25 15:28:09,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:09,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:28:09,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:28:09,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:09,867 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 238 [2022-11-25 15:28:09,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states 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 15:28:09,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:09,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 238 [2022-11-25 15:28:09,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:10,481 INFO L130 PetriNetUnfolder]: 2311/3398 cut-off events. [2022-11-25 15:28:10,481 INFO L131 PetriNetUnfolder]: For 15273/15273 co-relation queries the response was YES. [2022-11-25 15:28:10,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15278 conditions, 3398 events. 2311/3398 cut-off events. For 15273/15273 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16499 event pairs, 173 based on Foata normal form. 0/3018 useless extension candidates. Maximal degree in co-relation 15250. Up to 1089 conditions per place. [2022-11-25 15:28:10,510 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 146 selfloop transitions, 8 changer transitions 0/154 dead transitions. [2022-11-25 15:28:10,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 154 transitions, 1766 flow [2022-11-25 15:28:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:28:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:28:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 674 transitions. [2022-11-25 15:28:10,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47198879551820727 [2022-11-25 15:28:10,513 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 674 transitions. [2022-11-25 15:28:10,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 674 transitions. [2022-11-25 15:28:10,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:10,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 674 transitions. [2022-11-25 15:28:10,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 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 15:28:10,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states 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 15:28:10,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states 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 15:28:10,520 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 326 flow. Second operand 6 states and 674 transitions. [2022-11-25 15:28:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 154 transitions, 1766 flow [2022-11-25 15:28:10,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 154 transitions, 1763 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:10,534 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 384 flow [2022-11-25 15:28:10,535 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2022-11-25 15:28:10,536 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2022-11-25 15:28:10,536 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 384 flow [2022-11-25 15:28:10,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states 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 15:28:10,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:10,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:10,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:10,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:10,744 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080243, now seen corresponding path program 1 times [2022-11-25 15:28:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:10,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575510987] [2022-11-25 15:28:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:10,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:10,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575510987] [2022-11-25 15:28:10,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575510987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145369185] [2022-11-25 15:28:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:10,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:10,809 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:10,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 15:28:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:10,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:28:10,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:10,928 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 15:28:10,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:10,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145369185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:10,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:10,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 15:28:10,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406633404] [2022-11-25 15:28:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:10,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:10,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:28:10,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 15:28:10,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 15:28:10,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:10,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 15:28:10,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:11,383 INFO L130 PetriNetUnfolder]: 1761/2620 cut-off events. [2022-11-25 15:28:11,384 INFO L131 PetriNetUnfolder]: For 12106/12106 co-relation queries the response was YES. [2022-11-25 15:28:11,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12721 conditions, 2620 events. 1761/2620 cut-off events. For 12106/12106 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12401 event pairs, 173 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 12690. Up to 2182 conditions per place. [2022-11-25 15:28:11,408 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-25 15:28:11,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 761 flow [2022-11-25 15:28:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:28:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2022-11-25 15:28:11,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4684873949579832 [2022-11-25 15:28:11,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2022-11-25 15:28:11,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2022-11-25 15:28:11,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:11,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2022-11-25 15:28:11,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 15:28:11,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 15:28:11,417 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 15:28:11,417 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 384 flow. Second operand 4 states and 446 transitions. [2022-11-25 15:28:11,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 761 flow [2022-11-25 15:28:11,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 753 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 15:28:11,431 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 351 flow [2022-11-25 15:28:11,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=351, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2022-11-25 15:28:11,432 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2022-11-25 15:28:11,433 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 351 flow [2022-11-25 15:28:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 15:28:11,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:11,434 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:11,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:11,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 15:28:11,640 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:11,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash -711518825, now seen corresponding path program 1 times [2022-11-25 15:28:11,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:11,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734921254] [2022-11-25 15:28:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:11,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:11,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:11,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734921254] [2022-11-25 15:28:11,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734921254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:11,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234824990] [2022-11-25 15:28:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:11,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:11,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:11,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:11,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 15:28:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:11,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:28:11,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:11,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:11,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234824990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:11,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:11,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-25 15:28:11,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081555010] [2022-11-25 15:28:11,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:11,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:28:11,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:11,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:28:11,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:28:11,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 15:28:11,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 351 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 15:28:11,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:11,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 15:28:11,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:12,890 INFO L130 PetriNetUnfolder]: 2465/3676 cut-off events. [2022-11-25 15:28:12,891 INFO L131 PetriNetUnfolder]: For 13158/13158 co-relation queries the response was YES. [2022-11-25 15:28:12,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17488 conditions, 3676 events. 2465/3676 cut-off events. For 13158/13158 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18420 event pairs, 241 based on Foata normal form. 308/3984 useless extension candidates. Maximal degree in co-relation 17456. Up to 2319 conditions per place. [2022-11-25 15:28:12,930 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 110 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2022-11-25 15:28:12,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 133 transitions, 1210 flow [2022-11-25 15:28:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:28:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:28:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1014 transitions. [2022-11-25 15:28:12,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2022-11-25 15:28:12,934 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1014 transitions. [2022-11-25 15:28:12,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1014 transitions. [2022-11-25 15:28:12,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:12,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1014 transitions. [2022-11-25 15:28:12,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.66666666666667) internal successors, (1014), 9 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states 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 15:28:12,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 238.0) internal successors, (2380), 10 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 15:28:12,944 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 238.0) internal successors, (2380), 10 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 15:28:12,944 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 351 flow. Second operand 9 states and 1014 transitions. [2022-11-25 15:28:12,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 133 transitions, 1210 flow [2022-11-25 15:28:12,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1200 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:12,971 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 617 flow [2022-11-25 15:28:12,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=617, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2022-11-25 15:28:12,973 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2022-11-25 15:28:12,973 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 617 flow [2022-11-25 15:28:12,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 15:28:12,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:12,975 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-25 15:28:12,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:13,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 15:28:13,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:13,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:13,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2125825492, now seen corresponding path program 2 times [2022-11-25 15:28:13,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:13,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074347967] [2022-11-25 15:28:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:13,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:13,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074347967] [2022-11-25 15:28:13,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074347967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:13,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640732739] [2022-11-25 15:28:13,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:28:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:13,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:13,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:13,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 15:28:13,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:28:13,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:28:13,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:28:13,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:13,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:13,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640732739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:13,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:13,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 15:28:13,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584085667] [2022-11-25 15:28:13,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:13,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 15:28:13,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 15:28:13,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:28:13,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 15:28:13,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 617 flow. Second operand has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states 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 15:28:13,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:13,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 15:28:13,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:15,128 INFO L130 PetriNetUnfolder]: 3457/5176 cut-off events. [2022-11-25 15:28:15,128 INFO L131 PetriNetUnfolder]: For 32835/32835 co-relation queries the response was YES. [2022-11-25 15:28:15,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27545 conditions, 5176 events. 3457/5176 cut-off events. For 32835/32835 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 26684 event pairs, 219 based on Foata normal form. 496/5672 useless extension candidates. Maximal degree in co-relation 27509. Up to 2941 conditions per place. [2022-11-25 15:28:15,193 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 164 selfloop transitions, 35 changer transitions 0/199 dead transitions. [2022-11-25 15:28:15,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 199 transitions, 1888 flow [2022-11-25 15:28:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:28:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:28:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1370 transitions. [2022-11-25 15:28:15,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4796918767507003 [2022-11-25 15:28:15,201 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1370 transitions. [2022-11-25 15:28:15,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1370 transitions. [2022-11-25 15:28:15,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:15,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1370 transitions. [2022-11-25 15:28:15,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.16666666666667) internal successors, (1370), 12 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states 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 15:28:15,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 238.0) internal successors, (3094), 13 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states 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 15:28:15,214 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 238.0) internal successors, (3094), 13 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states 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 15:28:15,215 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 617 flow. Second operand 12 states and 1370 transitions. [2022-11-25 15:28:15,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 199 transitions, 1888 flow [2022-11-25 15:28:15,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 199 transitions, 1840 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:15,303 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 963 flow [2022-11-25 15:28:15,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=963, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2022-11-25 15:28:15,304 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2022-11-25 15:28:15,304 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 963 flow [2022-11-25 15:28:15,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states 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 15:28:15,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:15,306 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:15,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:15,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 15:28:15,513 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:15,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1572337244, now seen corresponding path program 2 times [2022-11-25 15:28:15,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:15,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806916082] [2022-11-25 15:28:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:15,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:15,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:15,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806916082] [2022-11-25 15:28:15,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806916082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:15,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109699917] [2022-11-25 15:28:15,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:28:15,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:15,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:15,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:15,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 15:28:15,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:28:15,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:28:15,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 15:28:15,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:15,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:16,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109699917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:16,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:16,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 15:28:16,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179092333] [2022-11-25 15:28:16,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:16,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 15:28:16,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 15:28:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:28:16,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 238 [2022-11-25 15:28:16,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 963 flow. Second operand has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states 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 15:28:16,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:16,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 238 [2022-11-25 15:28:16,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:18,785 INFO L130 PetriNetUnfolder]: 7177/10720 cut-off events. [2022-11-25 15:28:18,786 INFO L131 PetriNetUnfolder]: For 150175/150175 co-relation queries the response was YES. [2022-11-25 15:28:18,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63540 conditions, 10720 events. 7177/10720 cut-off events. For 150175/150175 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 59192 event pairs, 347 based on Foata normal form. 912/11632 useless extension candidates. Maximal degree in co-relation 63497. Up to 2826 conditions per place. [2022-11-25 15:28:18,926 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 687 selfloop transitions, 11 changer transitions 0/698 dead transitions. [2022-11-25 15:28:18,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 698 transitions, 11291 flow [2022-11-25 15:28:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:28:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:28:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2022-11-25 15:28:18,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46673669467787116 [2022-11-25 15:28:18,935 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2022-11-25 15:28:18,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2022-11-25 15:28:18,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:18,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2022-11-25 15:28:18,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.08333333333333) internal successors, (1333), 12 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states 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 15:28:19,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 238.0) internal successors, (3094), 13 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states 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 15:28:19,089 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 238.0) internal successors, (3094), 13 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states 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 15:28:19,089 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 963 flow. Second operand 12 states and 1333 transitions. [2022-11-25 15:28:19,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 698 transitions, 11291 flow [2022-11-25 15:28:19,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 698 transitions, 10333 flow, removed 451 selfloop flow, removed 2 redundant places. [2022-11-25 15:28:19,263 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 959 flow [2022-11-25 15:28:19,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=959, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2022-11-25 15:28:19,264 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2022-11-25 15:28:19,265 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 959 flow [2022-11-25 15:28:19,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states 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 15:28:19,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:19,266 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:19,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:19,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 15:28:19,472 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:19,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:19,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1636210841, now seen corresponding path program 1 times [2022-11-25 15:28:19,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:19,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919800990] [2022-11-25 15:28:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:19,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919800990] [2022-11-25 15:28:19,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919800990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:19,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995498729] [2022-11-25 15:28:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:19,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:19,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:19,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:19,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 15:28:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:19,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:28:19,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:19,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:19,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995498729] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:19,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:19,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 15:28:19,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840899118] [2022-11-25 15:28:19,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:19,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 15:28:19,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:19,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 15:28:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:28:19,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 15:28:19,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 959 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 15:28:19,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:19,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 15:28:19,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:23,335 INFO L130 PetriNetUnfolder]: 10547/15933 cut-off events. [2022-11-25 15:28:23,336 INFO L131 PetriNetUnfolder]: For 192330/192330 co-relation queries the response was YES. [2022-11-25 15:28:23,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93645 conditions, 15933 events. 10547/15933 cut-off events. For 192330/192330 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 98769 event pairs, 459 based on Foata normal form. 727/16660 useless extension candidates. Maximal degree in co-relation 93595. Up to 6508 conditions per place. [2022-11-25 15:28:23,514 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 264 selfloop transitions, 75 changer transitions 0/339 dead transitions. [2022-11-25 15:28:23,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 339 transitions, 3943 flow [2022-11-25 15:28:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:28:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 15:28:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1695 transitions. [2022-11-25 15:28:23,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47478991596638653 [2022-11-25 15:28:23,520 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1695 transitions. [2022-11-25 15:28:23,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1695 transitions. [2022-11-25 15:28:23,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:23,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1695 transitions. [2022-11-25 15:28:23,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.0) internal successors, (1695), 15 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states 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 15:28:23,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 238.0) internal successors, (3808), 16 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states 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 15:28:23,535 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 238.0) internal successors, (3808), 16 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states 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 15:28:23,535 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 959 flow. Second operand 15 states and 1695 transitions. [2022-11-25 15:28:23,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 339 transitions, 3943 flow [2022-11-25 15:28:24,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 339 transitions, 3499 flow, removed 169 selfloop flow, removed 5 redundant places. [2022-11-25 15:28:24,263 INFO L231 Difference]: Finished difference. Result has 110 places, 119 transitions, 1732 flow [2022-11-25 15:28:24,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1732, PETRI_PLACES=110, PETRI_TRANSITIONS=119} [2022-11-25 15:28:24,264 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2022-11-25 15:28:24,264 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 119 transitions, 1732 flow [2022-11-25 15:28:24,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 15:28:24,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:24,266 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:24,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:24,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 15:28:24,467 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash 367500575, now seen corresponding path program 2 times [2022-11-25 15:28:24,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:24,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820800300] [2022-11-25 15:28:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:24,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:24,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:24,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820800300] [2022-11-25 15:28:24,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820800300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:24,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212999696] [2022-11-25 15:28:24,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:28:24,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:24,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:24,558 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:24,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 15:28:24,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:28:24,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:28:24,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:28:24,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:24,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:24,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212999696] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:24,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:24,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 15:28:24,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241615440] [2022-11-25 15:28:24,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:24,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 15:28:24,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:24,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 15:28:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:28:25,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 15:28:25,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 119 transitions, 1732 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 15:28:25,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:25,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 15:28:25,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:29,970 INFO L130 PetriNetUnfolder]: 15607/23678 cut-off events. [2022-11-25 15:28:29,970 INFO L131 PetriNetUnfolder]: For 388828/388828 co-relation queries the response was YES. [2022-11-25 15:28:30,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152008 conditions, 23678 events. 15607/23678 cut-off events. For 388828/388828 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 157529 event pairs, 770 based on Foata normal form. 796/24474 useless extension candidates. Maximal degree in co-relation 151951. Up to 10117 conditions per place. [2022-11-25 15:28:30,269 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 374 selfloop transitions, 115 changer transitions 0/489 dead transitions. [2022-11-25 15:28:30,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 489 transitions, 5748 flow [2022-11-25 15:28:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 15:28:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-25 15:28:30,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2248 transitions. [2022-11-25 15:28:30,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4722689075630252 [2022-11-25 15:28:30,277 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2248 transitions. [2022-11-25 15:28:30,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2248 transitions. [2022-11-25 15:28:30,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:30,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2248 transitions. [2022-11-25 15:28:30,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.4) internal successors, (2248), 20 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states 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 15:28:30,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 238.0) internal successors, (4998), 21 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states 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 15:28:30,293 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 238.0) internal successors, (4998), 21 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states 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 15:28:30,294 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 1732 flow. Second operand 20 states and 2248 transitions. [2022-11-25 15:28:30,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 489 transitions, 5748 flow [2022-11-25 15:28:32,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 489 transitions, 5450 flow, removed 140 selfloop flow, removed 6 redundant places. [2022-11-25 15:28:33,001 INFO L231 Difference]: Finished difference. Result has 130 places, 183 transitions, 2897 flow [2022-11-25 15:28:33,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2897, PETRI_PLACES=130, PETRI_TRANSITIONS=183} [2022-11-25 15:28:33,002 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2022-11-25 15:28:33,002 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 183 transitions, 2897 flow [2022-11-25 15:28:33,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 15:28:33,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:33,003 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:33,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-25 15:28:33,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:33,208 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1484070644, now seen corresponding path program 3 times [2022-11-25 15:28:33,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:33,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691753982] [2022-11-25 15:28:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:33,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:33,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691753982] [2022-11-25 15:28:33,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691753982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:33,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300453632] [2022-11-25 15:28:33,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:28:33,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:33,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:33,350 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:33,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 15:28:33,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 15:28:33,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:28:33,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 15:28:33,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:33,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:33,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300453632] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:33,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:33,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-11-25 15:28:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177928329] [2022-11-25 15:28:33,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:33,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 15:28:33,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 15:28:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-11-25 15:28:33,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 15:28:33,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 183 transitions, 2897 flow. Second operand has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states 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 15:28:33,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:33,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 15:28:33,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:41,436 INFO L130 PetriNetUnfolder]: 21157/32276 cut-off events. [2022-11-25 15:28:41,438 INFO L131 PetriNetUnfolder]: For 732753/732753 co-relation queries the response was YES. [2022-11-25 15:28:41,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220240 conditions, 32276 events. 21157/32276 cut-off events. For 732753/732753 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 227203 event pairs, 1288 based on Foata normal form. 1063/33339 useless extension candidates. Maximal degree in co-relation 220177. Up to 12615 conditions per place. [2022-11-25 15:28:41,826 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 422 selfloop transitions, 164 changer transitions 0/586 dead transitions. [2022-11-25 15:28:41,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 586 transitions, 7416 flow [2022-11-25 15:28:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 15:28:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-25 15:28:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2022-11-25 15:28:41,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726890756302521 [2022-11-25 15:28:41,837 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2022-11-25 15:28:41,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2022-11-25 15:28:41,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:41,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2022-11-25 15:28:41,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.5) internal successors, (2475), 22 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states 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 15:28:41,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 238.0) internal successors, (5474), 23 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states 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 15:28:41,854 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 238.0) internal successors, (5474), 23 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states 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 15:28:41,854 INFO L175 Difference]: Start difference. First operand has 130 places, 183 transitions, 2897 flow. Second operand 22 states and 2475 transitions. [2022-11-25 15:28:41,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 586 transitions, 7416 flow [2022-11-25 15:28:49,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 586 transitions, 7125 flow, removed 141 selfloop flow, removed 3 redundant places. [2022-11-25 15:28:49,111 INFO L231 Difference]: Finished difference. Result has 156 places, 246 transitions, 4293 flow [2022-11-25 15:28:49,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4293, PETRI_PLACES=156, PETRI_TRANSITIONS=246} [2022-11-25 15:28:49,112 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2022-11-25 15:28:49,113 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 246 transitions, 4293 flow [2022-11-25 15:28:49,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states 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 15:28:49,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:49,114 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:49,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:49,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:49,320 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 15:28:49,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1575156487, now seen corresponding path program 1 times [2022-11-25 15:28:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:49,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819391627] [2022-11-25 15:28:49,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:49,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:49,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:49,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819391627] [2022-11-25 15:28:49,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819391627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:49,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518613914] [2022-11-25 15:28:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:49,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:49,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:49,518 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:49,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1d6109-fe94-42c1-aa81-f7f67dd61120/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 15:28:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:28:49,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:49,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:49,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518613914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:49,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:49,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-25 15:28:49,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56351317] [2022-11-25 15:28:49,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:49,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 15:28:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:49,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 15:28:49,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:28:50,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 15:28:50,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 246 transitions, 4293 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states 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 15:28:50,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:50,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 15:28:50,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:59,190 INFO L130 PetriNetUnfolder]: 25529/38959 cut-off events. [2022-11-25 15:28:59,191 INFO L131 PetriNetUnfolder]: For 1203439/1203439 co-relation queries the response was YES. [2022-11-25 15:28:59,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281683 conditions, 38959 events. 25529/38959 cut-off events. For 1203439/1203439 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 280459 event pairs, 1297 based on Foata normal form. 1210/40169 useless extension candidates. Maximal degree in co-relation 281611. Up to 12166 conditions per place. [2022-11-25 15:28:59,799 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 398 selfloop transitions, 242 changer transitions 0/640 dead transitions. [2022-11-25 15:28:59,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 640 transitions, 9038 flow [2022-11-25 15:28:59,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 15:28:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-25 15:28:59,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2372 transitions. [2022-11-25 15:28:59,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47458983593437376 [2022-11-25 15:28:59,805 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2372 transitions. [2022-11-25 15:28:59,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2372 transitions. [2022-11-25 15:28:59,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:59,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2372 transitions. [2022-11-25 15:28:59,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.95238095238095) internal successors, (2372), 21 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states 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 15:28:59,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 238.0) internal successors, (5236), 22 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states 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 15:28:59,821 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 238.0) internal successors, (5236), 22 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states 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 15:28:59,821 INFO L175 Difference]: Start difference. First operand has 156 places, 246 transitions, 4293 flow. Second operand 21 states and 2372 transitions. [2022-11-25 15:28:59,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 640 transitions, 9038 flow