./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/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_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/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_9d11e974-ae2d-4821-a337-da3e271e05c4/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 c7fcf270fc424e515c4f8db675612b386dd73dc1dc6be434bc2c22ad47252dc7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:05:38,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:05:38,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:05:38,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:05:38,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:05:38,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:05:38,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:05:38,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:05:38,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:05:38,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:05:38,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:05:38,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:05:38,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:05:38,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:05:38,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:05:38,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:05:38,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:05:38,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:05:38,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:05:38,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:05:38,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:05:38,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:05:38,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:05:38,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:05:38,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:05:38,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:05:38,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:05:38,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:05:38,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:05:38,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:05:38,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:05:38,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:05:38,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:05:38,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:05:38,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:05:38,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:05:38,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:05:38,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:05:38,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:05:38,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:05:38,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:05:38,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:05:38,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:05:38,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:05:38,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:05:38,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:05:38,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:05:38,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:05:38,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:05:38,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:05:38,330 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:05:38,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:05:38,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:05:38,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:05:38,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:05:38,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:05:38,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:05:38,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:05:38,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:05:38,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:05:38,333 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:05:38,334 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:05:38,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:05:38,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:05:38,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:05:38,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:05:38,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:05:38,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:05:38,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:05:38,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:05:38,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:05:38,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:05:38,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:05:38,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:05:38,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:05:38,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:05:38,338 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:05:38,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:05:38,339 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_9d11e974-ae2d-4821-a337-da3e271e05c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fcf270fc424e515c4f8db675612b386dd73dc1dc6be434bc2c22ad47252dc7 [2022-11-25 18:05:38,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:05:38,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:05:38,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:05:38,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:05:38,673 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:05:38,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/fib_unsafe-11.i [2022-11-25 18:05:41,815 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:05:42,104 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:05:42,105 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/sv-benchmarks/c/pthread/fib_unsafe-11.i [2022-11-25 18:05:42,125 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/data/a05a4443e/cb4ba323ae644a9ea74c9f93440bb88f/FLAGcad116d0a [2022-11-25 18:05:42,144 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/data/a05a4443e/cb4ba323ae644a9ea74c9f93440bb88f [2022-11-25 18:05:42,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:05:42,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:05:42,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:05:42,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:05:42,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:05:42,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c83aeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42, skipping insertion in model container [2022-11-25 18:05:42,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:05:42,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:05:42,547 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_9d11e974-ae2d-4821-a337-da3e271e05c4/sv-benchmarks/c/pthread/fib_unsafe-11.i[30243,30256] [2022-11-25 18:05:42,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:05:42,587 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:05:42,638 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_9d11e974-ae2d-4821-a337-da3e271e05c4/sv-benchmarks/c/pthread/fib_unsafe-11.i[30243,30256] [2022-11-25 18:05:42,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:05:42,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:05:42,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:05:42,683 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:05:42,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42 WrapperNode [2022-11-25 18:05:42,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:05:42,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:05:42,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:05:42,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:05:42,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,729 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-25 18:05:42,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:05:42,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:05:42,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:05:42,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:05:42,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:05:42,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:05:42,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:05:42,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:05:42,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (1/1) ... [2022-11-25 18:05:42,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:05:42,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:42,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:05:42,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:05:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 18:05:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 18:05:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 18:05:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 18:05:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:05:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:05:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:05:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:05:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:05:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:05:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:05:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:05:42,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:05:42,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:05:43,022 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:05:43,025 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:05:43,322 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:05:43,349 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:05:43,349 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:05:43,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:05:43 BoogieIcfgContainer [2022-11-25 18:05:43,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:05:43,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:05:43,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:05:43,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:05:43,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:05:42" (1/3) ... [2022-11-25 18:05:43,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dc3ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:05:43, skipping insertion in model container [2022-11-25 18:05:43,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:42" (2/3) ... [2022-11-25 18:05:43,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dc3ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:05:43, skipping insertion in model container [2022-11-25 18:05:43,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:05:43" (3/3) ... [2022-11-25 18:05:43,367 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-11.i [2022-11-25 18:05:43,381 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:05:43,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:05:43,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-25 18:05:43,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:05:43,467 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:05:43,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-25 18:05:43,566 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-25 18:05:43,566 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:05:43,579 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 18:05:43,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-25 18:05:43,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-25 18:05:43,591 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:05:43,623 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 118 transitions, 242 flow [2022-11-25 18:05:43,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 118 transitions, 242 flow [2022-11-25 18:05:43,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 118 transitions, 242 flow [2022-11-25 18:05:43,710 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-25 18:05:43,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:05:43,712 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 18:05:43,753 INFO L119 LiptonReduction]: Number of co-enabled transitions 3978 [2022-11-25 18:05:48,206 INFO L134 LiptonReduction]: Checked pairs total: 3367 [2022-11-25 18:05:48,206 INFO L136 LiptonReduction]: Total number of compositions: 118 [2022-11-25 18:05:48,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:05:48,245 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;@2be6ac80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:05:48,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 18:05:48,252 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-11-25 18:05:48,252 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:05:48,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:48,253 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:05:48,254 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 18:05:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 14200660, now seen corresponding path program 1 times [2022-11-25 18:05:48,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:48,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008782164] [2022-11-25 18:05:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:48,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008782164] [2022-11-25 18:05:48,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008782164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:48,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:48,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:05:48,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378508813] [2022-11-25 18:05:48,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:48,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:48,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:48,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:05:48,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 238 [2022-11-25 18:05:48,669 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 18:05:48,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:48,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 238 [2022-11-25 18:05:48,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:48,915 INFO L130 PetriNetUnfolder]: 681/1006 cut-off events. [2022-11-25 18:05:48,916 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 18:05:48,922 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 18:05:48,933 INFO L137 encePairwiseOnDemand]: 228/238 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2022-11-25 18:05:48,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 40 transitions, 169 flow [2022-11-25 18:05:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:05:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-11-25 18:05:48,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2022-11-25 18:05:48,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-11-25 18:05:48,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-11-25 18:05:48,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:48,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-11-25 18:05:48,979 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 18:05:48,987 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 18:05:48,988 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 18:05:48,992 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 372 transitions. [2022-11-25 18:05:48,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 40 transitions, 169 flow [2022-11-25 18:05:48,996 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 18:05:49,005 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 83 flow [2022-11-25 18:05:49,008 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 18:05:49,012 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2022-11-25 18:05:49,013 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 83 flow [2022-11-25 18:05:49,013 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 18:05:49,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:49,013 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:05:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:05:49,014 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 18:05:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash 14200705, now seen corresponding path program 1 times [2022-11-25 18:05:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:49,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540894294] [2022-11-25 18:05:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:49,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:49,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540894294] [2022-11-25 18:05:49,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540894294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:49,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:49,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:05:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102978679] [2022-11-25 18:05:49,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:05:49,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 18:05:49,123 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 18:05:49,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:49,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 18:05:49,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:49,332 INFO L130 PetriNetUnfolder]: 779/1168 cut-off events. [2022-11-25 18:05:49,333 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-11-25 18:05:49,335 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 18:05:49,342 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-25 18:05:49,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 208 flow [2022-11-25 18:05:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:05:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-11-25 18:05:49,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2022-11-25 18:05:49,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-11-25 18:05:49,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-11-25 18:05:49,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:49,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-11-25 18:05:49,349 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 18:05:49,353 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 18:05:49,354 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 18:05:49,354 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 83 flow. Second operand 3 states and 356 transitions. [2022-11-25 18:05:49,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 208 flow [2022-11-25 18:05:49,355 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 18:05:49,356 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 93 flow [2022-11-25 18:05:49,356 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 18:05:49,357 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-11-25 18:05:49,357 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 93 flow [2022-11-25 18:05:49,357 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 18:05:49,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:49,358 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:05:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:05:49,363 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 18:05:49,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 14200659, now seen corresponding path program 1 times [2022-11-25 18:05:49,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:49,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937738903] [2022-11-25 18:05:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:49,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:49,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:49,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937738903] [2022-11-25 18:05:49,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937738903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:49,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:49,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:05:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454569608] [2022-11-25 18:05:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:49,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:49,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:49,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:05:49,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 18:05:49,450 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 18:05:49,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:49,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 18:05:49,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:49,620 INFO L130 PetriNetUnfolder]: 853/1268 cut-off events. [2022-11-25 18:05:49,620 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2022-11-25 18:05:49,622 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 18:05:49,629 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2022-11-25 18:05:49,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 223 flow [2022-11-25 18:05:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:05:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-25 18:05:49,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2022-11-25 18:05:49,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-25 18:05:49,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-25 18:05:49,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:49,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-25 18:05:49,634 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 18:05:49,636 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 18:05:49,636 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 18:05:49,637 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 93 flow. Second operand 3 states and 354 transitions. [2022-11-25 18:05:49,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 223 flow [2022-11-25 18:05:49,639 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 18:05:49,639 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 121 flow [2022-11-25 18:05:49,640 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 18:05:49,641 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-11-25 18:05:49,641 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 121 flow [2022-11-25 18:05:49,641 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 18:05:49,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:49,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:05:49,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:05:49,642 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 18:05:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash 440222235, now seen corresponding path program 1 times [2022-11-25 18:05:49,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:49,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760686203] [2022-11-25 18:05:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:49,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:49,757 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 18:05:49,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:49,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760686203] [2022-11-25 18:05:49,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760686203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:49,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122882217] [2022-11-25 18:05:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:49,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:49,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:49,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:49,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:05:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:49,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:05:49,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:49,916 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 18:05:49,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:49,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122882217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:49,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:49,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 18:05:49,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915360438] [2022-11-25 18:05:49,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:49,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:05:49,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:49,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:05:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:05:49,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 18:05:49,945 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 18:05:49,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:49,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 18:05:49,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:50,164 INFO L130 PetriNetUnfolder]: 737/1096 cut-off events. [2022-11-25 18:05:50,165 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2022-11-25 18:05:50,167 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 18:05:50,173 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 40 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2022-11-25 18:05:50,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 251 flow [2022-11-25 18:05:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:05:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:05:50,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2022-11-25 18:05:50,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2022-11-25 18:05:50,176 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2022-11-25 18:05:50,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2022-11-25 18:05:50,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:50,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2022-11-25 18:05:50,178 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 18:05:50,180 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 18:05:50,181 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 18:05:50,181 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 121 flow. Second operand 4 states and 459 transitions. [2022-11-25 18:05:50,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 251 flow [2022-11-25 18:05:50,183 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 18:05:50,200 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 116 flow [2022-11-25 18:05:50,201 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 18:05:50,202 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-11-25 18:05:50,202 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 116 flow [2022-11-25 18:05:50,202 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 18:05:50,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:50,203 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:05:50,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:50,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:50,409 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 18:05:50,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:50,410 INFO L85 PathProgramCache]: Analyzing trace with hash 440222190, now seen corresponding path program 1 times [2022-11-25 18:05:50,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:50,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853223369] [2022-11-25 18:05:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:50,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:50,515 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 18:05:50,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:50,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853223369] [2022-11-25 18:05:50,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853223369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:50,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980777086] [2022-11-25 18:05:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:50,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:50,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:50,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:50,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:05:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:50,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:05:50,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:50,647 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 18:05:50,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:05:50,686 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 18:05:50,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980777086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:05:50,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:05:50,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-25 18:05:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177462955] [2022-11-25 18:05:50,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:05:50,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:05:50,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:50,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:05:50,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:05:50,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:05:50,716 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 18:05:50,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:50,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:05:50,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:51,102 INFO L130 PetriNetUnfolder]: 1451/2176 cut-off events. [2022-11-25 18:05:51,102 INFO L131 PetriNetUnfolder]: For 842/842 co-relation queries the response was YES. [2022-11-25 18:05:51,107 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 18:05:51,120 INFO L137 encePairwiseOnDemand]: 230/238 looper letters, 71 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2022-11-25 18:05:51,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 92 transitions, 516 flow [2022-11-25 18:05:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:05:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:05:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2022-11-25 18:05:51,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2022-11-25 18:05:51,123 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2022-11-25 18:05:51,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2022-11-25 18:05:51,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:51,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2022-11-25 18:05:51,126 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 18:05:51,128 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 18:05:51,129 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 18:05:51,130 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 116 flow. Second operand 6 states and 707 transitions. [2022-11-25 18:05:51,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 92 transitions, 516 flow [2022-11-25 18:05:51,132 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 18:05:51,133 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 320 flow [2022-11-25 18:05:51,133 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 18:05:51,134 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-11-25 18:05:51,134 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 320 flow [2022-11-25 18:05:51,135 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 18:05:51,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:51,135 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:05:51,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:51,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:51,358 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 18:05:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash 763504552, now seen corresponding path program 1 times [2022-11-25 18:05:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:51,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873111141] [2022-11-25 18:05:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:51,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:51,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:51,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873111141] [2022-11-25 18:05:51,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873111141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:51,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:51,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:05:51,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994329985] [2022-11-25 18:05:51,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:51,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:51,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:05:51,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 18:05:51,409 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 18:05:51,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:51,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 18:05:51,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:51,629 INFO L130 PetriNetUnfolder]: 1199/1810 cut-off events. [2022-11-25 18:05:51,629 INFO L131 PetriNetUnfolder]: For 2075/2075 co-relation queries the response was YES. [2022-11-25 18:05:51,634 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 18:05:51,647 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-11-25 18:05:51,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 443 flow [2022-11-25 18:05:51,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:51,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:05:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-25 18:05:51,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-11-25 18:05:51,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-25 18:05:51,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-25 18:05:51,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:51,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-25 18:05:51,651 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 18:05:51,652 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 18:05:51,653 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 18:05:51,653 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 320 flow. Second operand 3 states and 350 transitions. [2022-11-25 18:05:51,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 443 flow [2022-11-25 18:05:51,661 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 18:05:51,662 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 266 flow [2022-11-25 18:05:51,663 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 18:05:51,663 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2022-11-25 18:05:51,664 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 266 flow [2022-11-25 18:05:51,664 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 18:05:51,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:51,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:05:51,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:05:51,665 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 18:05:51,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:51,665 INFO L85 PathProgramCache]: Analyzing trace with hash 763507164, now seen corresponding path program 1 times [2022-11-25 18:05:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:51,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780372239] [2022-11-25 18:05:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:51,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:51,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780372239] [2022-11-25 18:05:51,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780372239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:51,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:51,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:05:51,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832034922] [2022-11-25 18:05:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:51,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:51,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:05:51,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 238 [2022-11-25 18:05:51,725 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 18:05:51,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:51,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 238 [2022-11-25 18:05:51,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:52,079 INFO L130 PetriNetUnfolder]: 1885/2790 cut-off events. [2022-11-25 18:05:52,079 INFO L131 PetriNetUnfolder]: For 5619/5619 co-relation queries the response was YES. [2022-11-25 18:05:52,086 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 18:05:52,115 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 69 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2022-11-25 18:05:52,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 649 flow [2022-11-25 18:05:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:05:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-11-25 18:05:52,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49719887955182074 [2022-11-25 18:05:52,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-11-25 18:05:52,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-11-25 18:05:52,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:52,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-11-25 18:05:52,119 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 18:05:52,121 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 18:05:52,121 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 18:05:52,121 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 266 flow. Second operand 3 states and 355 transitions. [2022-11-25 18:05:52,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 649 flow [2022-11-25 18:05:52,129 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 18:05:52,131 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 273 flow [2022-11-25 18:05:52,131 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 18:05:52,133 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2022-11-25 18:05:52,133 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 273 flow [2022-11-25 18:05:52,134 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 18:05:52,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:52,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:05:52,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:05:52,135 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 18:05:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 763507099, now seen corresponding path program 1 times [2022-11-25 18:05:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:52,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508700242] [2022-11-25 18:05:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:52,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:52,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508700242] [2022-11-25 18:05:52,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508700242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:52,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:52,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:05:52,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822995604] [2022-11-25 18:05:52,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:52,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:52,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:52,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:52,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:05:52,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 238 [2022-11-25 18:05:52,224 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 18:05:52,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:52,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 238 [2022-11-25 18:05:52,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:52,585 INFO L130 PetriNetUnfolder]: 1689/2496 cut-off events. [2022-11-25 18:05:52,586 INFO L131 PetriNetUnfolder]: For 4980/4980 co-relation queries the response was YES. [2022-11-25 18:05:52,593 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 18:05:52,617 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 68 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2022-11-25 18:05:52,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 638 flow [2022-11-25 18:05:52,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:05:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-25 18:05:52,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2022-11-25 18:05:52,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-25 18:05:52,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-25 18:05:52,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:52,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-25 18:05:52,622 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 18:05:52,623 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 18:05:52,624 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 18:05:52,624 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 273 flow. Second operand 3 states and 354 transitions. [2022-11-25 18:05:52,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 638 flow [2022-11-25 18:05:52,630 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 18:05:52,632 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 281 flow [2022-11-25 18:05:52,633 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 18:05:52,636 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-11-25 18:05:52,636 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 281 flow [2022-11-25 18:05:52,637 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 18:05:52,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:52,637 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:05:52,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:05:52,640 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 18:05:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash 763507195, now seen corresponding path program 1 times [2022-11-25 18:05:52,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:52,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834199875] [2022-11-25 18:05:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:52,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:52,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:52,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834199875] [2022-11-25 18:05:52,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834199875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:52,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:52,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:05:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404468837] [2022-11-25 18:05:52,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:52,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:52,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:52,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:52,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:05:52,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 18:05:52,709 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 18:05:52,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:52,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 18:05:52,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:53,011 INFO L130 PetriNetUnfolder]: 1395/2104 cut-off events. [2022-11-25 18:05:53,011 INFO L131 PetriNetUnfolder]: For 4818/4818 co-relation queries the response was YES. [2022-11-25 18:05:53,018 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 18:05:53,030 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 67 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-11-25 18:05:53,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 633 flow [2022-11-25 18:05:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:05:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-25 18:05:53,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-11-25 18:05:53,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-25 18:05:53,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-25 18:05:53,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:53,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-25 18:05:53,034 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 18:05:53,035 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 18:05:53,036 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 18:05:53,036 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 281 flow. Second operand 3 states and 350 transitions. [2022-11-25 18:05:53,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 633 flow [2022-11-25 18:05:53,043 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 18:05:53,045 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 278 flow [2022-11-25 18:05:53,046 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 18:05:53,046 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-11-25 18:05:53,047 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 278 flow [2022-11-25 18:05:53,047 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 18:05:53,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:53,047 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:53,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:05:53,048 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 18:05:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash -711518776, now seen corresponding path program 1 times [2022-11-25 18:05:53,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:53,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824548231] [2022-11-25 18:05:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:53,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:53,114 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 18:05:53,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824548231] [2022-11-25 18:05:53,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824548231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010915167] [2022-11-25 18:05:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:53,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:53,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:53,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:53,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:05:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:53,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:05:53,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:53,220 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 18:05:53,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:53,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010915167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:53,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:53,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-25 18:05:53,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879917172] [2022-11-25 18:05:53,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:53,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:05:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:53,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:05:53,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:05:53,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 18:05:53,236 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 18:05:53,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:53,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 18:05:53,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:53,564 INFO L130 PetriNetUnfolder]: 1423/2167 cut-off events. [2022-11-25 18:05:53,564 INFO L131 PetriNetUnfolder]: For 3064/3064 co-relation queries the response was YES. [2022-11-25 18:05:53,570 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 18:05:53,581 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 63 selfloop transitions, 10 changer transitions 0/73 dead transitions. [2022-11-25 18:05:53,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 617 flow [2022-11-25 18:05:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:05:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:05:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2022-11-25 18:05:53,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2022-11-25 18:05:53,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2022-11-25 18:05:53,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2022-11-25 18:05:53,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:53,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2022-11-25 18:05:53,586 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 18:05:53,588 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 18:05:53,589 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 18:05:53,589 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 278 flow. Second operand 5 states and 574 transitions. [2022-11-25 18:05:53,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 617 flow [2022-11-25 18:05:53,595 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 18:05:53,596 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 305 flow [2022-11-25 18:05:53,597 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 18:05:53,597 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 18:05:53,597 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 305 flow [2022-11-25 18:05:53,598 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 18:05:53,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:53,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:53,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:53,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:05:53,804 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 18:05:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2101162265, now seen corresponding path program 1 times [2022-11-25 18:05:53,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:53,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651327491] [2022-11-25 18:05:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:53,875 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 18:05:53,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:53,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651327491] [2022-11-25 18:05:53,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651327491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:53,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004640294] [2022-11-25 18:05:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:53,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:53,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:53,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:53,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:05:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:53,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:05:53,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:54,025 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 18:05:54,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:54,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004640294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:54,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:54,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-25 18:05:54,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568477701] [2022-11-25 18:05:54,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:54,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:05:54,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:05:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:05:54,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 238 [2022-11-25 18:05:54,044 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 18:05:54,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:54,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 238 [2022-11-25 18:05:54,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:54,291 INFO L130 PetriNetUnfolder]: 1129/1684 cut-off events. [2022-11-25 18:05:54,291 INFO L131 PetriNetUnfolder]: For 4645/4645 co-relation queries the response was YES. [2022-11-25 18:05:54,296 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 18:05:54,305 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 38 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2022-11-25 18:05:54,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 464 flow [2022-11-25 18:05:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:05:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:05:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2022-11-25 18:05:54,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4737394957983193 [2022-11-25 18:05:54,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2022-11-25 18:05:54,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2022-11-25 18:05:54,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:54,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2022-11-25 18:05:54,310 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 18:05:54,312 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 18:05:54,312 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 18:05:54,313 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 305 flow. Second operand 4 states and 451 transitions. [2022-11-25 18:05:54,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 464 flow [2022-11-25 18:05:54,320 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 18:05:54,321 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 331 flow [2022-11-25 18:05:54,322 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 18:05:54,322 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 18:05:54,322 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 331 flow [2022-11-25 18:05:54,323 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 18:05:54,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:54,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:54,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:54,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:54,529 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 18:05:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080339, now seen corresponding path program 1 times [2022-11-25 18:05:54,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:54,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051488911] [2022-11-25 18:05:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:54,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:54,588 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 18:05:54,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:54,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051488911] [2022-11-25 18:05:54,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051488911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:54,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606209577] [2022-11-25 18:05:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:54,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:54,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:54,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:54,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:05:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:54,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:05:54,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:54,717 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 18:05:54,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:54,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606209577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:54,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:54,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-25 18:05:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702920607] [2022-11-25 18:05:54,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:54,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:05:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:05:54,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:05:54,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 18:05:54,745 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 18:05:54,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:54,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 18:05:54,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:54,950 INFO L130 PetriNetUnfolder]: 971/1450 cut-off events. [2022-11-25 18:05:54,950 INFO L131 PetriNetUnfolder]: For 6039/6039 co-relation queries the response was YES. [2022-11-25 18:05:54,955 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 18:05:54,964 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 62 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2022-11-25 18:05:54,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 731 flow [2022-11-25 18:05:54,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:05:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:05:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2022-11-25 18:05:54,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4695378151260504 [2022-11-25 18:05:54,967 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2022-11-25 18:05:54,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2022-11-25 18:05:54,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:54,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2022-11-25 18:05:54,969 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 18:05:54,971 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 18:05:54,972 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 18:05:54,972 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 331 flow. Second operand 4 states and 447 transitions. [2022-11-25 18:05:54,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 731 flow [2022-11-25 18:05:54,978 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 18:05:54,979 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 326 flow [2022-11-25 18:05:54,979 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 18:05:54,980 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 18:05:54,980 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 326 flow [2022-11-25 18:05:54,981 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 18:05:54,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:54,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:54,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:55,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:55,187 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 18:05:55,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:55,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080274, now seen corresponding path program 1 times [2022-11-25 18:05:55,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:55,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727423128] [2022-11-25 18:05:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:55,242 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 18:05:55,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:55,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727423128] [2022-11-25 18:05:55,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727423128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:55,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659713333] [2022-11-25 18:05:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:55,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:55,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:55,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:55,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:05:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:55,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:05:55,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:55,372 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 18:05:55,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:05:55,399 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 18:05:55,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659713333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:05:55,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:05:55,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-25 18:05:55,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811654616] [2022-11-25 18:05:55,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:05:55,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:05:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:55,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:05:55,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:05:55,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 238 [2022-11-25 18:05:55,445 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 18:05:55,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:55,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 238 [2022-11-25 18:05:55,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:55,976 INFO L130 PetriNetUnfolder]: 2311/3398 cut-off events. [2022-11-25 18:05:55,976 INFO L131 PetriNetUnfolder]: For 15273/15273 co-relation queries the response was YES. [2022-11-25 18:05:55,985 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 18:05:56,006 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 146 selfloop transitions, 8 changer transitions 0/154 dead transitions. [2022-11-25 18:05:56,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 154 transitions, 1766 flow [2022-11-25 18:05:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:05:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:05:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 674 transitions. [2022-11-25 18:05:56,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47198879551820727 [2022-11-25 18:05:56,009 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 674 transitions. [2022-11-25 18:05:56,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 674 transitions. [2022-11-25 18:05:56,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:56,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 674 transitions. [2022-11-25 18:05:56,012 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 18:05:56,014 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 18:05:56,015 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 18:05:56,015 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 326 flow. Second operand 6 states and 674 transitions. [2022-11-25 18:05:56,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 154 transitions, 1766 flow [2022-11-25 18:05:56,025 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 18:05:56,027 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 384 flow [2022-11-25 18:05:56,027 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 18:05:56,028 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2022-11-25 18:05:56,028 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 384 flow [2022-11-25 18:05:56,029 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 18:05:56,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:56,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:56,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:56,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 18:05:56,238 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 18:05:56,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080243, now seen corresponding path program 1 times [2022-11-25 18:05:56,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:56,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599078681] [2022-11-25 18:05:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,297 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 18:05:56,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:56,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599078681] [2022-11-25 18:05:56,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599078681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:56,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430265514] [2022-11-25 18:05:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:56,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:56,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:56,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:56,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:05:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:05:56,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:56,396 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 18:05:56,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:56,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430265514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:56,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:56,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 18:05:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819366037] [2022-11-25 18:05:56,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:56,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:05:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:56,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:05:56,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:05:56,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 18:05:56,412 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 18:05:56,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:56,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 18:05:56,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:56,832 INFO L130 PetriNetUnfolder]: 1761/2620 cut-off events. [2022-11-25 18:05:56,832 INFO L131 PetriNetUnfolder]: For 12106/12106 co-relation queries the response was YES. [2022-11-25 18:05:56,842 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 18:05:56,863 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-25 18:05:56,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 761 flow [2022-11-25 18:05:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:05:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:05:56,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2022-11-25 18:05:56,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4684873949579832 [2022-11-25 18:05:56,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2022-11-25 18:05:56,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2022-11-25 18:05:56,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:56,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2022-11-25 18:05:56,868 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 18:05:56,871 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 18:05:56,872 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 18:05:56,873 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 384 flow. Second operand 4 states and 446 transitions. [2022-11-25 18:05:56,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 761 flow [2022-11-25 18:05:56,888 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 18:05:56,889 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 351 flow [2022-11-25 18:05:56,890 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 18:05:56,890 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2022-11-25 18:05:56,891 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 351 flow [2022-11-25 18:05:56,891 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 18:05:56,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:56,891 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:56,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:57,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 18:05:57,102 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 18:05:57,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash -711518825, now seen corresponding path program 1 times [2022-11-25 18:05:57,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:57,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054119808] [2022-11-25 18:05:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:57,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:57,171 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 18:05:57,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:57,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054119808] [2022-11-25 18:05:57,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054119808] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:57,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532686503] [2022-11-25 18:05:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:57,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:57,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:57,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:57,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:05:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:57,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:05:57,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:57,332 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 18:05:57,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:05:57,379 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 18:05:57,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532686503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:05:57,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:05:57,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-25 18:05:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137558569] [2022-11-25 18:05:57,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:05:57,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 18:05:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:57,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 18:05:57,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:05:57,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:05:57,415 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 18:05:57,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:57,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:05:57,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:58,128 INFO L130 PetriNetUnfolder]: 2465/3676 cut-off events. [2022-11-25 18:05:58,128 INFO L131 PetriNetUnfolder]: For 13158/13158 co-relation queries the response was YES. [2022-11-25 18:05:58,144 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 18:05:58,166 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 110 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2022-11-25 18:05:58,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 133 transitions, 1210 flow [2022-11-25 18:05:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:05:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:05:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1014 transitions. [2022-11-25 18:05:58,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2022-11-25 18:05:58,170 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1014 transitions. [2022-11-25 18:05:58,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1014 transitions. [2022-11-25 18:05:58,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:58,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1014 transitions. [2022-11-25 18:05:58,173 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 18:05:58,177 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 18:05:58,178 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 18:05:58,178 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 351 flow. Second operand 9 states and 1014 transitions. [2022-11-25 18:05:58,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 133 transitions, 1210 flow [2022-11-25 18:05:58,199 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 18:05:58,201 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 617 flow [2022-11-25 18:05:58,201 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 18:05:58,202 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2022-11-25 18:05:58,203 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 617 flow [2022-11-25 18:05:58,203 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 18:05:58,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:05:58,204 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-25 18:05:58,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:58,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 18:05:58,410 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 18:05:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:58,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2125825492, now seen corresponding path program 2 times [2022-11-25 18:05:58,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:58,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442991630] [2022-11-25 18:05:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:58,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:58,546 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 18:05:58,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:58,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442991630] [2022-11-25 18:05:58,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442991630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:58,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716479946] [2022-11-25 18:05:58,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:05:58,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:58,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:58,549 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:58,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:05:58,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:05:58,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:05:58,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:05:58,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:58,745 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 18:05:58,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:05:58,847 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 18:05:58,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716479946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:05:58,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:05:58,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 18:05:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400343176] [2022-11-25 18:05:58,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:05:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 18:05:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 18:05:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:05:58,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:05:58,897 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 18:05:58,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:05:58,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:05:58,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:00,042 INFO L130 PetriNetUnfolder]: 3457/5176 cut-off events. [2022-11-25 18:06:00,042 INFO L131 PetriNetUnfolder]: For 32835/32835 co-relation queries the response was YES. [2022-11-25 18:06:00,070 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 18:06:00,102 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 164 selfloop transitions, 35 changer transitions 0/199 dead transitions. [2022-11-25 18:06:00,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 199 transitions, 1888 flow [2022-11-25 18:06:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:06:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:06:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1370 transitions. [2022-11-25 18:06:00,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4796918767507003 [2022-11-25 18:06:00,108 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1370 transitions. [2022-11-25 18:06:00,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1370 transitions. [2022-11-25 18:06:00,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:00,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1370 transitions. [2022-11-25 18:06:00,112 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 18:06:00,118 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 18:06:00,119 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 18:06:00,120 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 617 flow. Second operand 12 states and 1370 transitions. [2022-11-25 18:06:00,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 199 transitions, 1888 flow [2022-11-25 18:06:00,197 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 18:06:00,200 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 963 flow [2022-11-25 18:06:00,200 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 18:06:00,201 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2022-11-25 18:06:00,201 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 963 flow [2022-11-25 18:06:00,202 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 18:06:00,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:00,202 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:00,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:06:00,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:06:00,408 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 18:06:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1572337244, now seen corresponding path program 2 times [2022-11-25 18:06:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:00,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444301090] [2022-11-25 18:06:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:00,595 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 18:06:00,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:00,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444301090] [2022-11-25 18:06:00,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444301090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:00,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335614080] [2022-11-25 18:06:00,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:06:00,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:00,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:00,598 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:00,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:06:00,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:06:00,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:06:00,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:06:00,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:00,819 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 18:06:00,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:06:00,930 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 18:06:00,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335614080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:06:00,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:06:00,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 18:06:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613682505] [2022-11-25 18:06:00,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:06:00,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 18:06:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 18:06:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:06:01,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 238 [2022-11-25 18:06:01,009 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 18:06:01,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:01,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 238 [2022-11-25 18:06:01,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:02,955 INFO L130 PetriNetUnfolder]: 7177/10720 cut-off events. [2022-11-25 18:06:02,956 INFO L131 PetriNetUnfolder]: For 150175/150175 co-relation queries the response was YES. [2022-11-25 18:06:03,031 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 18:06:03,099 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 687 selfloop transitions, 11 changer transitions 0/698 dead transitions. [2022-11-25 18:06:03,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 698 transitions, 11291 flow [2022-11-25 18:06:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:06:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:06:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2022-11-25 18:06:03,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46673669467787116 [2022-11-25 18:06:03,103 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2022-11-25 18:06:03,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2022-11-25 18:06:03,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:03,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2022-11-25 18:06:03,107 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 18:06:03,112 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 18:06:03,113 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 18:06:03,113 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 963 flow. Second operand 12 states and 1333 transitions. [2022-11-25 18:06:03,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 698 transitions, 11291 flow [2022-11-25 18:06:03,277 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 18:06:03,285 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 959 flow [2022-11-25 18:06:03,285 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 18:06:03,286 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2022-11-25 18:06:03,287 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 959 flow [2022-11-25 18:06:03,288 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 18:06:03,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:03,288 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:03,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:06:03,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 18:06:03,493 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 18:06:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:03,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1636210841, now seen corresponding path program 1 times [2022-11-25 18:06:03,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:03,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510668921] [2022-11-25 18:06:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:03,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:03,678 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 18:06:03,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:03,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510668921] [2022-11-25 18:06:03,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510668921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:03,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612443619] [2022-11-25 18:06:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:03,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:03,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:03,680 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:03,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 18:06:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:03,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:06:03,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:03,875 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 18:06:03,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:06:03,967 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 18:06:03,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612443619] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:06:03,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:06:03,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 18:06:03,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285916227] [2022-11-25 18:06:03,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:06:03,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 18:06:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:03,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 18:06:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:06:04,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:06:04,027 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 18:06:04,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:04,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:06:04,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:06,905 INFO L130 PetriNetUnfolder]: 10547/15933 cut-off events. [2022-11-25 18:06:06,905 INFO L131 PetriNetUnfolder]: For 192330/192330 co-relation queries the response was YES. [2022-11-25 18:06:07,037 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 18:06:07,134 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 264 selfloop transitions, 75 changer transitions 0/339 dead transitions. [2022-11-25 18:06:07,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 339 transitions, 3943 flow [2022-11-25 18:06:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:06:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 18:06:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1695 transitions. [2022-11-25 18:06:07,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47478991596638653 [2022-11-25 18:06:07,140 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1695 transitions. [2022-11-25 18:06:07,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1695 transitions. [2022-11-25 18:06:07,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:07,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1695 transitions. [2022-11-25 18:06:07,145 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 18:06:07,151 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 18:06:07,152 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 18:06:07,152 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 959 flow. Second operand 15 states and 1695 transitions. [2022-11-25 18:06:07,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 339 transitions, 3943 flow [2022-11-25 18:06:07,991 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 18:06:07,995 INFO L231 Difference]: Finished difference. Result has 110 places, 119 transitions, 1732 flow [2022-11-25 18:06:07,995 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 18:06:07,996 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2022-11-25 18:06:07,996 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 119 transitions, 1732 flow [2022-11-25 18:06:07,997 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 18:06:07,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:07,998 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:08,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:06:08,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:06:08,209 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 18:06:08,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash 367500575, now seen corresponding path program 2 times [2022-11-25 18:06:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:08,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295443803] [2022-11-25 18:06:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:08,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,293 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 18:06:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:08,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295443803] [2022-11-25 18:06:08,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295443803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:08,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834920661] [2022-11-25 18:06:08,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:06:08,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:08,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:08,296 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:08,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 18:06:08,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:06:08,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:06:08,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:06:08,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:08,527 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 18:06:08,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:06:08,611 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 18:06:08,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834920661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:06:08,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:06:08,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 18:06:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624897861] [2022-11-25 18:06:08,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:06:08,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 18:06:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:08,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 18:06:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:06:08,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:06:08,663 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 18:06:08,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:08,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:06:08,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:13,174 INFO L130 PetriNetUnfolder]: 15607/23678 cut-off events. [2022-11-25 18:06:13,174 INFO L131 PetriNetUnfolder]: For 388828/388828 co-relation queries the response was YES. [2022-11-25 18:06:13,379 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 18:06:13,673 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 374 selfloop transitions, 115 changer transitions 0/489 dead transitions. [2022-11-25 18:06:13,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 489 transitions, 5748 flow [2022-11-25 18:06:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 18:06:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-25 18:06:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2248 transitions. [2022-11-25 18:06:13,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4722689075630252 [2022-11-25 18:06:13,680 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2248 transitions. [2022-11-25 18:06:13,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2248 transitions. [2022-11-25 18:06:13,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:13,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2248 transitions. [2022-11-25 18:06:13,686 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 18:06:13,693 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 18:06:13,694 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 18:06:13,695 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 1732 flow. Second operand 20 states and 2248 transitions. [2022-11-25 18:06:13,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 489 transitions, 5748 flow [2022-11-25 18:06:16,682 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 18:06:16,687 INFO L231 Difference]: Finished difference. Result has 130 places, 183 transitions, 2897 flow [2022-11-25 18:06:16,688 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 18:06:16,688 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2022-11-25 18:06:16,689 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 183 transitions, 2897 flow [2022-11-25 18:06:16,689 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 18:06:16,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:16,690 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:16,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:06:16,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:16,891 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 18:06:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:16,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1484070644, now seen corresponding path program 3 times [2022-11-25 18:06:16,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:16,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624196684] [2022-11-25 18:06:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:16,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:17,049 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 18:06:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:17,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624196684] [2022-11-25 18:06:17,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624196684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:17,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968784707] [2022-11-25 18:06:17,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:06:17,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:17,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:17,052 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:17,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 18:06:17,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:06:17,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:06:17,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:06:17,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:17,301 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 18:06:17,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:06:17,409 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 18:06:17,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968784707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:06:17,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:06:17,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-11-25 18:06:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948863668] [2022-11-25 18:06:17,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:06:17,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 18:06:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 18:06:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-11-25 18:06:17,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:06:17,478 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 18:06:17,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:17,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:06:17,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:24,230 INFO L130 PetriNetUnfolder]: 21157/32276 cut-off events. [2022-11-25 18:06:24,231 INFO L131 PetriNetUnfolder]: For 732753/732753 co-relation queries the response was YES. [2022-11-25 18:06:24,663 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 18:06:24,783 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 422 selfloop transitions, 164 changer transitions 0/586 dead transitions. [2022-11-25 18:06:24,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 586 transitions, 7416 flow [2022-11-25 18:06:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 18:06:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-25 18:06:24,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2022-11-25 18:06:24,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726890756302521 [2022-11-25 18:06:24,790 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2022-11-25 18:06:24,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2022-11-25 18:06:24,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:24,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2022-11-25 18:06:24,796 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 18:06:24,803 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 18:06:24,805 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 18:06:24,805 INFO L175 Difference]: Start difference. First operand has 130 places, 183 transitions, 2897 flow. Second operand 22 states and 2475 transitions. [2022-11-25 18:06:24,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 586 transitions, 7416 flow [2022-11-25 18:06:32,363 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 18:06:32,371 INFO L231 Difference]: Finished difference. Result has 156 places, 246 transitions, 4293 flow [2022-11-25 18:06:32,371 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 18:06:32,372 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2022-11-25 18:06:32,372 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 246 transitions, 4293 flow [2022-11-25 18:06:32,373 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 18:06:32,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:32,373 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:32,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:06:32,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:32,584 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 18:06:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:32,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1575156487, now seen corresponding path program 1 times [2022-11-25 18:06:32,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:32,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744684710] [2022-11-25 18:06:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:32,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:32,734 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 18:06:32,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:32,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744684710] [2022-11-25 18:06:32,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744684710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:32,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050941385] [2022-11-25 18:06:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:32,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:32,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:32,737 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:32,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 18:06:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:32,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:06:32,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:33,003 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 18:06:33,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:06:33,135 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 18:06:33,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050941385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:06:33,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:06:33,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-25 18:06:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875867152] [2022-11-25 18:06:33,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:06:33,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 18:06:33,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 18:06:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2022-11-25 18:06:33,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:06:33,231 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 18:06:33,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:33,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:06:33,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:42,276 INFO L130 PetriNetUnfolder]: 25529/38959 cut-off events. [2022-11-25 18:06:42,276 INFO L131 PetriNetUnfolder]: For 1203439/1203439 co-relation queries the response was YES. [2022-11-25 18:06:42,688 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 18:06:42,870 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 398 selfloop transitions, 242 changer transitions 0/640 dead transitions. [2022-11-25 18:06:42,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 640 transitions, 9038 flow [2022-11-25 18:06:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 18:06:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-25 18:06:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2372 transitions. [2022-11-25 18:06:42,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47458983593437376 [2022-11-25 18:06:42,874 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2372 transitions. [2022-11-25 18:06:42,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2372 transitions. [2022-11-25 18:06:42,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:42,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2372 transitions. [2022-11-25 18:06:42,877 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 18:06:42,884 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 18:06:42,885 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 18:06:42,886 INFO L175 Difference]: Start difference. First operand has 156 places, 246 transitions, 4293 flow. Second operand 21 states and 2372 transitions. [2022-11-25 18:06:42,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 640 transitions, 9038 flow [2022-11-25 18:06:57,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 640 transitions, 8549 flow, removed 219 selfloop flow, removed 9 redundant places. [2022-11-25 18:06:57,710 INFO L231 Difference]: Finished difference. Result has 176 places, 312 transitions, 5952 flow [2022-11-25 18:06:57,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5952, PETRI_PLACES=176, PETRI_TRANSITIONS=312} [2022-11-25 18:06:57,711 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2022-11-25 18:06:57,711 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 312 transitions, 5952 flow [2022-11-25 18:06:57,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 18:06:57,712 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:57,712 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:57,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:06:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-25 18:06:57,918 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:06:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1832810197, now seen corresponding path program 2 times [2022-11-25 18:06:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:57,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679100918] [2022-11-25 18:06:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:58,036 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 18:06:58,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:58,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679100918] [2022-11-25 18:06:58,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679100918] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:58,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528921719] [2022-11-25 18:06:58,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:06:58,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:58,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:58,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:58,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 18:06:58,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:06:58,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:06:58,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:06:58,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:58,268 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 18:06:58,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:06:58,384 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 18:06:58,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528921719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:06:58,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:06:58,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-25 18:06:58,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554519486] [2022-11-25 18:06:58,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:06:58,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 18:06:58,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:58,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 18:06:58,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2022-11-25 18:06:58,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:06:58,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 312 transitions, 5952 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 18:06:58,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:58,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:06:58,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:11,073 INFO L130 PetriNetUnfolder]: 33559/51267 cut-off events. [2022-11-25 18:07:11,073 INFO L131 PetriNetUnfolder]: For 1685820/1685820 co-relation queries the response was YES. [2022-11-25 18:07:11,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386049 conditions, 51267 events. 33559/51267 cut-off events. For 1685820/1685820 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 384551 event pairs, 1682 based on Foata normal form. 1003/52270 useless extension candidates. Maximal degree in co-relation 385968. Up to 19340 conditions per place. [2022-11-25 18:07:11,820 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 535 selfloop transitions, 291 changer transitions 0/826 dead transitions. [2022-11-25 18:07:11,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 826 transitions, 12483 flow [2022-11-25 18:07:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 18:07:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-25 18:07:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2919 transitions. [2022-11-25 18:07:11,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47171945701357465 [2022-11-25 18:07:11,828 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2919 transitions. [2022-11-25 18:07:11,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2919 transitions. [2022-11-25 18:07:11,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:11,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2919 transitions. [2022-11-25 18:07:11,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.26923076923077) internal successors, (2919), 26 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:11,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 238.0) internal successors, (6426), 27 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:11,845 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 238.0) internal successors, (6426), 27 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:11,845 INFO L175 Difference]: Start difference. First operand has 176 places, 312 transitions, 5952 flow. Second operand 26 states and 2919 transitions. [2022-11-25 18:07:11,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 826 transitions, 12483 flow [2022-11-25 18:07:48,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 826 transitions, 12084 flow, removed 185 selfloop flow, removed 6 redundant places. [2022-11-25 18:07:48,546 INFO L231 Difference]: Finished difference. Result has 205 places, 419 transitions, 8594 flow [2022-11-25 18:07:48,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=5661, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8594, PETRI_PLACES=205, PETRI_TRANSITIONS=419} [2022-11-25 18:07:48,546 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2022-11-25 18:07:48,546 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 419 transitions, 8594 flow [2022-11-25 18:07:48,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 18:07:48,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:48,547 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:48,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 18:07:48,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 18:07:48,748 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:07:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash 974222558, now seen corresponding path program 4 times [2022-11-25 18:07:48,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:48,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954429075] [2022-11-25 18:07:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:07:48,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:48,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954429075] [2022-11-25 18:07:48,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954429075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:07:48,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332648063] [2022-11-25 18:07:48,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:07:48,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:07:48,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:07:48,895 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:07:48,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d11e974-ae2d-4821-a337-da3e271e05c4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 18:07:48,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:07:48,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:07:48,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:07:48,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:07:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:07:49,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:07:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:07:49,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332648063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:07:49,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:07:49,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-25 18:07:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145515226] [2022-11-25 18:07:49,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:07:49,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 18:07:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 18:07:49,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2022-11-25 18:07:49,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 18:07:49,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 419 transitions, 8594 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:49,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:49,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 18:07:49,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand