./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-12.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_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/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_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/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_f9150e10-7e97-482b-ab24-f0c87905a320/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 e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 --- 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 16:45:53,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:45:53,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:45:53,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:45:53,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:45:53,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:45:53,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:45:53,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:45:53,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:45:53,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:45:53,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:45:53,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:45:53,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:45:53,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:45:53,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:45:53,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:45:53,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:45:53,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:45:53,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:45:53,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:45:53,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:45:53,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:45:53,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:45:53,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:45:53,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:45:53,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:45:53,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:45:53,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:45:53,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:45:53,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:45:53,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:45:53,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:45:53,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:45:53,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:45:53,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:45:53,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:45:53,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:45:53,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:45:53,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:45:53,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:45:53,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:45:53,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 16:45:53,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:45:53,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:45:53,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:45:53,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:45:53,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:45:53,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:45:53,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:45:53,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:45:53,313 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:45:53,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:45:53,315 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:45:53,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:45:53,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:45:53,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:45:53,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:45:53,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:45:53,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:45:53,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:45:53,317 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:45:53,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:45:53,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:45:53,317 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:45:53,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:45:53,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:45:53,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:45:53,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:45:53,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:45:53,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:45:53,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:45:53,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:45:53,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:45:53,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:45:53,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:45:53,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:45:53,321 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:45:53,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:45:53,321 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_f9150e10-7e97-482b-ab24-f0c87905a320/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 [2022-11-25 16:45:53,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:45:53,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:45:53,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:45:53,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:45:53,629 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:45:53,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/fib_safe-12.i [2022-11-25 16:45:56,722 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:45:57,041 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:45:57,041 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/sv-benchmarks/c/pthread/fib_safe-12.i [2022-11-25 16:45:57,053 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/data/41a2048cc/b7b2853d5033497db1e475f8febbe636/FLAG32e57306b [2022-11-25 16:45:57,069 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/data/41a2048cc/b7b2853d5033497db1e475f8febbe636 [2022-11-25 16:45:57,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:45:57,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:45:57,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:45:57,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:45:57,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:45:57,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ebc8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57, skipping insertion in model container [2022-11-25 16:45:57,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:45:57,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:45:57,544 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_f9150e10-7e97-482b-ab24-f0c87905a320/sv-benchmarks/c/pthread/fib_safe-12.i[30241,30254] [2022-11-25 16:45:57,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,571 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:45:57,598 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:45:57,657 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_f9150e10-7e97-482b-ab24-f0c87905a320/sv-benchmarks/c/pthread/fib_safe-12.i[30241,30254] [2022-11-25 16:45:57,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:45:57,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:45:57,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:45:57,710 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:45:57,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57 WrapperNode [2022-11-25 16:45:57,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:45:57,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:45:57,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:45:57,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:45:57,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,770 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-25 16:45:57,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:45:57,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:45:57,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:45:57,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:45:57,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:45:57,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:45:57,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:45:57,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:45:57,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (1/1) ... [2022-11-25 16:45:57,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:45:57,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:45:57,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:45:57,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:45:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 16:45:57,932 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 16:45:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 16:45:57,932 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 16:45:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:45:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 16:45:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:45:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:45:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:45:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:45:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 16:45:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:45:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:45:57,937 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 16:45:58,143 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:45:58,146 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:45:58,402 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:45:58,434 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:45:58,434 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 16:45:58,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:45:58 BoogieIcfgContainer [2022-11-25 16:45:58,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:45:58,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:45:58,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:45:58,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:45:58,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:45:57" (1/3) ... [2022-11-25 16:45:58,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41389e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:45:58, skipping insertion in model container [2022-11-25 16:45:58,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:45:57" (2/3) ... [2022-11-25 16:45:58,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41389e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:45:58, skipping insertion in model container [2022-11-25 16:45:58,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:45:58" (3/3) ... [2022-11-25 16:45:58,449 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-12.i [2022-11-25 16:45:58,460 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:45:58,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:45:58,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-25 16:45:58,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:45:58,546 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 16:45:58,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-25 16:45:58,707 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-25 16:45:58,707 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:45:58,714 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 16:45:58,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-25 16:45:58,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-25 16:45:58,726 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:45:58,752 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 118 transitions, 242 flow [2022-11-25 16:45:58,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 118 transitions, 242 flow [2022-11-25 16:45:58,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 118 transitions, 242 flow [2022-11-25 16:45:58,852 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-25 16:45:58,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:45:58,854 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 16:45:58,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 3978 [2022-11-25 16:46:03,420 INFO L134 LiptonReduction]: Checked pairs total: 3367 [2022-11-25 16:46:03,420 INFO L136 LiptonReduction]: Total number of compositions: 118 [2022-11-25 16:46:03,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:46:03,443 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;@5a8ea47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:46:03,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 16:46:03,446 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-11-25 16:46:03,447 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:46:03,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:03,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:46:03,448 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 16:46:03,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash 14200660, now seen corresponding path program 1 times [2022-11-25 16:46:03,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:03,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366471400] [2022-11-25 16:46:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:03,754 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 16:46:03,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:03,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366471400] [2022-11-25 16:46:03,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366471400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:03,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:03,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:46:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898646166] [2022-11-25 16:46:03,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:03,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:03,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:03,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:03,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:03,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 238 [2022-11-25 16:46:03,861 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 16:46:03,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:03,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 238 [2022-11-25 16:46:03,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:04,155 INFO L130 PetriNetUnfolder]: 681/1006 cut-off events. [2022-11-25 16:46:04,156 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 16:46:04,162 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 16:46:04,172 INFO L137 encePairwiseOnDemand]: 228/238 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2022-11-25 16:46:04,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 40 transitions, 169 flow [2022-11-25 16:46:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-11-25 16:46:04,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2022-11-25 16:46:04,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-11-25 16:46:04,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-11-25 16:46:04,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:04,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-11-25 16:46:04,213 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 16:46:04,220 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 16:46:04,221 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 16:46:04,224 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 372 transitions. [2022-11-25 16:46:04,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 40 transitions, 169 flow [2022-11-25 16:46:04,228 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 16:46:04,236 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 83 flow [2022-11-25 16:46:04,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2022-11-25 16:46:04,244 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2022-11-25 16:46:04,244 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 83 flow [2022-11-25 16:46:04,245 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 16:46:04,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:04,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:46:04,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:46:04,246 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 16:46:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash 14200705, now seen corresponding path program 1 times [2022-11-25 16:46:04,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:04,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677110702] [2022-11-25 16:46:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:04,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:04,414 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 16:46:04,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:04,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677110702] [2022-11-25 16:46:04,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677110702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:04,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:04,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:46:04,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069582244] [2022-11-25 16:46:04,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:04,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:04,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:04,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:04,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:04,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 16:46:04,430 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 16:46:04,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:04,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 16:46:04,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:04,612 INFO L130 PetriNetUnfolder]: 779/1168 cut-off events. [2022-11-25 16:46:04,612 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-11-25 16:46:04,614 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 16:46:04,621 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-25 16:46:04,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 208 flow [2022-11-25 16:46:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-11-25 16:46:04,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2022-11-25 16:46:04,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-11-25 16:46:04,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-11-25 16:46:04,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:04,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-11-25 16:46:04,625 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 16:46:04,651 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 16:46:04,652 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 16:46:04,652 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 83 flow. Second operand 3 states and 356 transitions. [2022-11-25 16:46:04,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 208 flow [2022-11-25 16:46:04,653 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 16:46:04,654 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 93 flow [2022-11-25 16:46:04,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2022-11-25 16:46:04,655 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-11-25 16:46:04,655 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 93 flow [2022-11-25 16:46:04,655 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 16:46:04,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:04,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:46:04,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:46:04,656 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 16:46:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash 14200659, now seen corresponding path program 1 times [2022-11-25 16:46:04,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:04,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066200418] [2022-11-25 16:46:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:04,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:04,753 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 16:46:04,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:04,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066200418] [2022-11-25 16:46:04,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066200418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:04,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:04,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:46:04,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604922954] [2022-11-25 16:46:04,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:04,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:04,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:04,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:04,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:04,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 16:46:04,777 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 16:46:04,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:04,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 16:46:04,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:04,969 INFO L130 PetriNetUnfolder]: 853/1268 cut-off events. [2022-11-25 16:46:04,970 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2022-11-25 16:46:04,971 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 16:46:04,979 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2022-11-25 16:46:04,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 223 flow [2022-11-25 16:46:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-25 16:46:04,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2022-11-25 16:46:04,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-25 16:46:04,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-25 16:46:04,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:04,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-25 16:46:04,983 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 16:46:04,985 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 16:46:04,986 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 16:46:04,986 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 93 flow. Second operand 3 states and 354 transitions. [2022-11-25 16:46:04,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 223 flow [2022-11-25 16:46:04,989 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 16:46:04,990 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 121 flow [2022-11-25 16:46:04,991 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 16:46:04,992 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-11-25 16:46:04,992 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 121 flow [2022-11-25 16:46:04,992 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 16:46:04,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:04,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:46:04,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:46:04,993 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 16:46:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash 440222235, now seen corresponding path program 1 times [2022-11-25 16:46:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:04,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504785937] [2022-11-25 16:46:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:05,107 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 16:46:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:05,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504785937] [2022-11-25 16:46:05,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504785937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:05,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894729452] [2022-11-25 16:46:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:05,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:05,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:05,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:05,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:46:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:05,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:46:05,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:05,278 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 16:46:05,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:05,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894729452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:05,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:05,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 16:46:05,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832080145] [2022-11-25 16:46:05,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:05,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:46:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:46:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:46:05,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 16:46:05,292 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 16:46:05,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:05,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 16:46:05,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:05,521 INFO L130 PetriNetUnfolder]: 737/1096 cut-off events. [2022-11-25 16:46:05,522 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2022-11-25 16:46:05,524 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 16:46:05,531 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 40 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2022-11-25 16:46:05,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 251 flow [2022-11-25 16:46:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:46:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:46:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2022-11-25 16:46:05,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2022-11-25 16:46:05,534 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2022-11-25 16:46:05,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2022-11-25 16:46:05,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:05,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2022-11-25 16:46:05,536 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 16:46:05,539 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 16:46:05,539 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 16:46:05,540 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 121 flow. Second operand 4 states and 459 transitions. [2022-11-25 16:46:05,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 251 flow [2022-11-25 16:46:05,541 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 16:46:05,542 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 116 flow [2022-11-25 16:46:05,542 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 16:46:05,543 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-11-25 16:46:05,544 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 116 flow [2022-11-25 16:46:05,544 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 16:46:05,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:05,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:46:05,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:05,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:05,759 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 16:46:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash 440222190, now seen corresponding path program 1 times [2022-11-25 16:46:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:05,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508471070] [2022-11-25 16:46:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:05,828 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 16:46:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:05,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508471070] [2022-11-25 16:46:05,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508471070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:05,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749568821] [2022-11-25 16:46:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:05,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:05,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:05,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:05,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:46:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:05,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:46:05,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:05,962 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 16:46:05,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:05,989 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 16:46:05,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749568821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:05,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:05,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-25 16:46:05,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034674509] [2022-11-25 16:46:05,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:05,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:46:05,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:46:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:46:06,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:46:06,008 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 16:46:06,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:06,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:46:06,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:06,366 INFO L130 PetriNetUnfolder]: 1451/2176 cut-off events. [2022-11-25 16:46:06,366 INFO L131 PetriNetUnfolder]: For 842/842 co-relation queries the response was YES. [2022-11-25 16:46:06,369 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 16:46:06,380 INFO L137 encePairwiseOnDemand]: 230/238 looper letters, 71 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2022-11-25 16:46:06,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 92 transitions, 516 flow [2022-11-25 16:46:06,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:46:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:46:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2022-11-25 16:46:06,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2022-11-25 16:46:06,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2022-11-25 16:46:06,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2022-11-25 16:46:06,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:06,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2022-11-25 16:46:06,386 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 16:46:06,388 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 16:46:06,389 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 16:46:06,390 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 116 flow. Second operand 6 states and 707 transitions. [2022-11-25 16:46:06,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 92 transitions, 516 flow [2022-11-25 16:46:06,393 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 16:46:06,394 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 320 flow [2022-11-25 16:46:06,394 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 16:46:06,398 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-11-25 16:46:06,398 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 320 flow [2022-11-25 16:46:06,399 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 16:46:06,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:06,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:46:06,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 16:46:06,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:06,605 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 16:46:06,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash 763504552, now seen corresponding path program 1 times [2022-11-25 16:46:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:06,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146873429] [2022-11-25 16:46:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:06,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:06,649 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 16:46:06,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:06,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146873429] [2022-11-25 16:46:06,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146873429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:06,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:06,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:46:06,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82279048] [2022-11-25 16:46:06,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:06,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:06,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:06,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:06,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:06,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 16:46:06,661 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 16:46:06,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:06,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 16:46:06,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:06,897 INFO L130 PetriNetUnfolder]: 1199/1810 cut-off events. [2022-11-25 16:46:06,898 INFO L131 PetriNetUnfolder]: For 2075/2075 co-relation queries the response was YES. [2022-11-25 16:46:06,902 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 16:46:06,913 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-11-25 16:46:06,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 443 flow [2022-11-25 16:46:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-25 16:46:06,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-11-25 16:46:06,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-25 16:46:06,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-25 16:46:06,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:06,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-25 16:46:06,917 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 16:46:06,918 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 16:46:06,919 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 16:46:06,919 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 320 flow. Second operand 3 states and 350 transitions. [2022-11-25 16:46:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 443 flow [2022-11-25 16:46:06,931 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 16:46:06,933 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 266 flow [2022-11-25 16:46:06,933 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 16:46:06,936 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2022-11-25 16:46:06,936 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 266 flow [2022-11-25 16:46:06,940 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 16:46:06,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:06,941 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:46:06,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:46:06,941 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 16:46:06,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:06,941 INFO L85 PathProgramCache]: Analyzing trace with hash 763507164, now seen corresponding path program 1 times [2022-11-25 16:46:06,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:06,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124144682] [2022-11-25 16:46:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:06,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:07,023 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 16:46:07,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124144682] [2022-11-25 16:46:07,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124144682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:07,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:07,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:46:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280159406] [2022-11-25 16:46:07,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:07,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:07,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:07,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 238 [2022-11-25 16:46:07,045 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 16:46:07,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:07,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 238 [2022-11-25 16:46:07,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:07,412 INFO L130 PetriNetUnfolder]: 1885/2790 cut-off events. [2022-11-25 16:46:07,413 INFO L131 PetriNetUnfolder]: For 5619/5619 co-relation queries the response was YES. [2022-11-25 16:46:07,420 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 16:46:07,445 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 69 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2022-11-25 16:46:07,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 649 flow [2022-11-25 16:46:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-11-25 16:46:07,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49719887955182074 [2022-11-25 16:46:07,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-11-25 16:46:07,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-11-25 16:46:07,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:07,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-11-25 16:46:07,449 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 16:46:07,450 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 16:46:07,451 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 16:46:07,451 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 266 flow. Second operand 3 states and 355 transitions. [2022-11-25 16:46:07,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 649 flow [2022-11-25 16:46:07,459 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 16:46:07,460 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 273 flow [2022-11-25 16:46:07,461 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 16:46:07,461 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2022-11-25 16:46:07,461 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 273 flow [2022-11-25 16:46:07,462 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 16:46:07,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:07,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:46:07,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:46:07,462 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 16:46:07,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash 763507099, now seen corresponding path program 1 times [2022-11-25 16:46:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:07,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518795179] [2022-11-25 16:46:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:07,526 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 16:46:07,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:07,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518795179] [2022-11-25 16:46:07,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518795179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:07,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:07,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:46:07,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642946866] [2022-11-25 16:46:07,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:07,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:07,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:07,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 238 [2022-11-25 16:46:07,550 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 16:46:07,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:07,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 238 [2022-11-25 16:46:07,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:07,882 INFO L130 PetriNetUnfolder]: 1689/2496 cut-off events. [2022-11-25 16:46:07,882 INFO L131 PetriNetUnfolder]: For 4980/4980 co-relation queries the response was YES. [2022-11-25 16:46:07,889 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 16:46:07,911 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 68 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2022-11-25 16:46:07,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 638 flow [2022-11-25 16:46:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-25 16:46:07,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2022-11-25 16:46:07,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-25 16:46:07,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-25 16:46:07,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:07,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-25 16:46:07,915 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 16:46:07,916 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 16:46:07,916 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 16:46:07,916 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 273 flow. Second operand 3 states and 354 transitions. [2022-11-25 16:46:07,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 638 flow [2022-11-25 16:46:07,923 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 16:46:07,924 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 281 flow [2022-11-25 16:46:07,924 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 16:46:07,926 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-11-25 16:46:07,926 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 281 flow [2022-11-25 16:46:07,926 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 16:46:07,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:07,927 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:46:07,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:46:07,929 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 16:46:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:07,930 INFO L85 PathProgramCache]: Analyzing trace with hash 763507195, now seen corresponding path program 1 times [2022-11-25 16:46:07,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:07,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088422647] [2022-11-25 16:46:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:07,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:07,981 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 16:46:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:07,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088422647] [2022-11-25 16:46:07,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088422647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:07,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:07,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:46:07,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833880313] [2022-11-25 16:46:07,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:07,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:07,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:07,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 16:46:07,993 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 16:46:07,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:07,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 16:46:07,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:08,262 INFO L130 PetriNetUnfolder]: 1395/2104 cut-off events. [2022-11-25 16:46:08,263 INFO L131 PetriNetUnfolder]: For 4818/4818 co-relation queries the response was YES. [2022-11-25 16:46:08,268 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 16:46:08,281 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 67 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-11-25 16:46:08,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 633 flow [2022-11-25 16:46:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-25 16:46:08,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-11-25 16:46:08,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-25 16:46:08,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-25 16:46:08,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:08,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-25 16:46:08,286 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 16:46:08,287 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 16:46:08,287 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 16:46:08,288 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 281 flow. Second operand 3 states and 350 transitions. [2022-11-25 16:46:08,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 633 flow [2022-11-25 16:46:08,293 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 16:46:08,294 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 278 flow [2022-11-25 16:46:08,294 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 16:46:08,295 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-11-25 16:46:08,295 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 278 flow [2022-11-25 16:46:08,296 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 16:46:08,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:08,296 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:08,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:46:08,296 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 16:46:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:08,297 INFO L85 PathProgramCache]: Analyzing trace with hash -711518776, now seen corresponding path program 1 times [2022-11-25 16:46:08,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:08,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411153193] [2022-11-25 16:46:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:08,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:08,354 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 16:46:08,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:08,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411153193] [2022-11-25 16:46:08,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411153193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:08,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276900132] [2022-11-25 16:46:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:08,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:08,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:08,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:46:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:08,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:46:08,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:08,470 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 16:46:08,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:08,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276900132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:08,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:08,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-25 16:46:08,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191747973] [2022-11-25 16:46:08,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:08,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:46:08,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:46:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:46:08,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 16:46:08,486 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 16:46:08,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:08,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 16:46:08,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:08,815 INFO L130 PetriNetUnfolder]: 1423/2167 cut-off events. [2022-11-25 16:46:08,815 INFO L131 PetriNetUnfolder]: For 3064/3064 co-relation queries the response was YES. [2022-11-25 16:46:08,822 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 16:46:08,835 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 63 selfloop transitions, 10 changer transitions 0/73 dead transitions. [2022-11-25 16:46:08,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 617 flow [2022-11-25 16:46:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:46:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:46:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2022-11-25 16:46:08,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2022-11-25 16:46:08,838 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2022-11-25 16:46:08,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2022-11-25 16:46:08,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:08,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2022-11-25 16:46:08,840 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 16:46:08,842 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 16:46:08,845 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 16:46:08,845 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 278 flow. Second operand 5 states and 574 transitions. [2022-11-25 16:46:08,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 617 flow [2022-11-25 16:46:08,852 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 16:46:08,854 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 305 flow [2022-11-25 16:46:08,855 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 16:46:08,856 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 16:46:08,856 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 305 flow [2022-11-25 16:46:08,856 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 16:46:08,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:08,856 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:08,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:09,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:09,062 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 16:46:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:09,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2101162265, now seen corresponding path program 1 times [2022-11-25 16:46:09,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:09,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894068308] [2022-11-25 16:46:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:09,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:09,129 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 16:46:09,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:09,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894068308] [2022-11-25 16:46:09,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894068308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:09,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013516954] [2022-11-25 16:46:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:09,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:09,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:09,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:09,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:46:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:09,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:46:09,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:09,279 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 16:46:09,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:09,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013516954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:09,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:09,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-25 16:46:09,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591158658] [2022-11-25 16:46:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:09,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:46:09,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:09,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:46:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:46:09,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 238 [2022-11-25 16:46:09,298 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 16:46:09,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:09,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 238 [2022-11-25 16:46:09,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:09,664 INFO L130 PetriNetUnfolder]: 1129/1684 cut-off events. [2022-11-25 16:46:09,665 INFO L131 PetriNetUnfolder]: For 4645/4645 co-relation queries the response was YES. [2022-11-25 16:46:09,670 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 16:46:09,682 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 38 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2022-11-25 16:46:09,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 464 flow [2022-11-25 16:46:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:46:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:46:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2022-11-25 16:46:09,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4737394957983193 [2022-11-25 16:46:09,685 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2022-11-25 16:46:09,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2022-11-25 16:46:09,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:09,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2022-11-25 16:46:09,687 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 16:46:09,689 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 16:46:09,690 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 16:46:09,690 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 305 flow. Second operand 4 states and 451 transitions. [2022-11-25 16:46:09,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 464 flow [2022-11-25 16:46:09,698 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 16:46:09,699 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 331 flow [2022-11-25 16:46:09,700 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 16:46:09,700 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 16:46:09,700 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 331 flow [2022-11-25 16:46:09,701 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 16:46:09,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:09,701 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:09,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:09,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:09,907 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 16:46:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:09,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080339, now seen corresponding path program 1 times [2022-11-25 16:46:09,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:09,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107309469] [2022-11-25 16:46:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:10,009 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 16:46:10,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:10,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107309469] [2022-11-25 16:46:10,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107309469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:10,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473244149] [2022-11-25 16:46:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:10,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:10,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:10,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:10,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:46:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:10,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:46:10,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:10,139 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 16:46:10,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:10,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473244149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:10,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:10,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-25 16:46:10,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830900179] [2022-11-25 16:46:10,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:10,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:46:10,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:46:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:46:10,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 16:46:10,164 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 16:46:10,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:10,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 16:46:10,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:10,379 INFO L130 PetriNetUnfolder]: 971/1450 cut-off events. [2022-11-25 16:46:10,379 INFO L131 PetriNetUnfolder]: For 6039/6039 co-relation queries the response was YES. [2022-11-25 16:46:10,385 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 16:46:10,394 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 62 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2022-11-25 16:46:10,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 731 flow [2022-11-25 16:46:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:46:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:46:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2022-11-25 16:46:10,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4695378151260504 [2022-11-25 16:46:10,396 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2022-11-25 16:46:10,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2022-11-25 16:46:10,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:10,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2022-11-25 16:46:10,398 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 16:46:10,400 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 16:46:10,401 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 16:46:10,401 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 331 flow. Second operand 4 states and 447 transitions. [2022-11-25 16:46:10,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 731 flow [2022-11-25 16:46:10,407 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 16:46:10,408 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 326 flow [2022-11-25 16:46:10,409 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 16:46:10,409 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-25 16:46:10,410 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 326 flow [2022-11-25 16:46:10,410 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 16:46:10,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:10,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:10,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:10,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:10,616 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 16:46:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:10,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080274, now seen corresponding path program 1 times [2022-11-25 16:46:10,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:10,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13420122] [2022-11-25 16:46:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:10,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:10,674 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 16:46:10,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:10,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13420122] [2022-11-25 16:46:10,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13420122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:10,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401298905] [2022-11-25 16:46:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:10,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:10,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:10,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:10,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:46:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:10,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:46:10,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:10,849 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 16:46:10,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:10,888 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 16:46:10,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401298905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:10,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:10,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-25 16:46:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042236271] [2022-11-25 16:46:10,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:46:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:46:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:46:10,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 238 [2022-11-25 16:46:10,942 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 16:46:10,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:10,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 238 [2022-11-25 16:46:10,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:11,464 INFO L130 PetriNetUnfolder]: 2311/3398 cut-off events. [2022-11-25 16:46:11,464 INFO L131 PetriNetUnfolder]: For 15273/15273 co-relation queries the response was YES. [2022-11-25 16:46:11,473 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 16:46:11,494 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 146 selfloop transitions, 8 changer transitions 0/154 dead transitions. [2022-11-25 16:46:11,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 154 transitions, 1766 flow [2022-11-25 16:46:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:46:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:46:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 674 transitions. [2022-11-25 16:46:11,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47198879551820727 [2022-11-25 16:46:11,497 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 674 transitions. [2022-11-25 16:46:11,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 674 transitions. [2022-11-25 16:46:11,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:11,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 674 transitions. [2022-11-25 16:46:11,499 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 16:46:11,502 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 16:46:11,502 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 16:46:11,503 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 326 flow. Second operand 6 states and 674 transitions. [2022-11-25 16:46:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 154 transitions, 1766 flow [2022-11-25 16:46:11,513 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 16:46:11,515 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 384 flow [2022-11-25 16:46:11,515 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 16:46:11,516 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2022-11-25 16:46:11,516 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 384 flow [2022-11-25 16:46:11,516 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 16:46:11,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:11,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:11,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:11,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 16:46:11,722 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 16:46:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080243, now seen corresponding path program 1 times [2022-11-25 16:46:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:11,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477539204] [2022-11-25 16:46:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:11,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:11,773 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 16:46:11,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:11,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477539204] [2022-11-25 16:46:11,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477539204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:11,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676472731] [2022-11-25 16:46:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:11,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:11,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:11,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:11,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:46:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:11,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:46:11,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:11,873 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 16:46:11,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:11,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676472731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:11,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:11,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 16:46:11,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726453068] [2022-11-25 16:46:11,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:11,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:46:11,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:46:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:46:11,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-25 16:46:11,888 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 16:46:11,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:11,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-25 16:46:11,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:12,282 INFO L130 PetriNetUnfolder]: 1761/2620 cut-off events. [2022-11-25 16:46:12,282 INFO L131 PetriNetUnfolder]: For 12106/12106 co-relation queries the response was YES. [2022-11-25 16:46:12,290 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 16:46:12,306 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-25 16:46:12,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 761 flow [2022-11-25 16:46:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:46:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:46:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2022-11-25 16:46:12,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4684873949579832 [2022-11-25 16:46:12,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2022-11-25 16:46:12,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2022-11-25 16:46:12,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:12,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2022-11-25 16:46:12,310 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 16:46:12,311 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 16:46:12,312 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 16:46:12,312 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 384 flow. Second operand 4 states and 446 transitions. [2022-11-25 16:46:12,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 761 flow [2022-11-25 16:46:12,325 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 16:46:12,326 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 351 flow [2022-11-25 16:46:12,326 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 16:46:12,327 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2022-11-25 16:46:12,327 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 351 flow [2022-11-25 16:46:12,327 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 16:46:12,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:12,327 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:12,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:12,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 16:46:12,533 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 16:46:12,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:12,533 INFO L85 PathProgramCache]: Analyzing trace with hash -711518825, now seen corresponding path program 1 times [2022-11-25 16:46:12,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:12,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12521257] [2022-11-25 16:46:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:12,589 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 16:46:12,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:12,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12521257] [2022-11-25 16:46:12,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12521257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:12,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992122911] [2022-11-25 16:46:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:12,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:12,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:12,591 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:12,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 16:46:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:12,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:46:12,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:12,742 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 16:46:12,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:12,781 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 16:46:12,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992122911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:12,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:12,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-25 16:46:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497257748] [2022-11-25 16:46:12,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:12,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 16:46:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 16:46:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:46:12,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:46:12,813 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 16:46:12,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:12,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:46:12,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:13,491 INFO L130 PetriNetUnfolder]: 2465/3676 cut-off events. [2022-11-25 16:46:13,491 INFO L131 PetriNetUnfolder]: For 13158/13158 co-relation queries the response was YES. [2022-11-25 16:46:13,505 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 16:46:13,527 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 110 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2022-11-25 16:46:13,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 133 transitions, 1210 flow [2022-11-25 16:46:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:46:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:46:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1014 transitions. [2022-11-25 16:46:13,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2022-11-25 16:46:13,533 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1014 transitions. [2022-11-25 16:46:13,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1014 transitions. [2022-11-25 16:46:13,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:13,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1014 transitions. [2022-11-25 16:46:13,536 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 16:46:13,540 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 16:46:13,541 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 16:46:13,541 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 351 flow. Second operand 9 states and 1014 transitions. [2022-11-25 16:46:13,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 133 transitions, 1210 flow [2022-11-25 16:46:13,564 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 16:46:13,566 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 617 flow [2022-11-25 16:46:13,567 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 16:46:13,568 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2022-11-25 16:46:13,568 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 617 flow [2022-11-25 16:46:13,569 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 16:46:13,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:13,569 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-25 16:46:13,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:13,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 16:46:13,775 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 16:46:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2125825492, now seen corresponding path program 2 times [2022-11-25 16:46:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:13,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548438276] [2022-11-25 16:46:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:13,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:13,901 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 16:46:13,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:13,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548438276] [2022-11-25 16:46:13,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548438276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:13,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889530049] [2022-11-25 16:46:13,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:46:13,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:13,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:13,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:13,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 16:46:13,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:46:13,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:46:13,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:46:13,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:14,096 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 16:46:14,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:14,198 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 16:46:14,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889530049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:14,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:14,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 16:46:14,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697949692] [2022-11-25 16:46:14,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:14,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 16:46:14,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:14,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 16:46:14,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:46:14,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:46:14,251 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 16:46:14,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:14,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:46:14,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:15,367 INFO L130 PetriNetUnfolder]: 3457/5176 cut-off events. [2022-11-25 16:46:15,367 INFO L131 PetriNetUnfolder]: For 32835/32835 co-relation queries the response was YES. [2022-11-25 16:46:15,392 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 16:46:15,418 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 164 selfloop transitions, 35 changer transitions 0/199 dead transitions. [2022-11-25 16:46:15,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 199 transitions, 1888 flow [2022-11-25 16:46:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:46:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:46:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1370 transitions. [2022-11-25 16:46:15,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4796918767507003 [2022-11-25 16:46:15,422 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1370 transitions. [2022-11-25 16:46:15,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1370 transitions. [2022-11-25 16:46:15,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:15,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1370 transitions. [2022-11-25 16:46:15,426 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 16:46:15,431 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 16:46:15,433 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 16:46:15,433 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 617 flow. Second operand 12 states and 1370 transitions. [2022-11-25 16:46:15,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 199 transitions, 1888 flow [2022-11-25 16:46:15,502 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 16:46:15,505 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 963 flow [2022-11-25 16:46:15,505 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 16:46:15,506 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2022-11-25 16:46:15,506 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 963 flow [2022-11-25 16:46:15,507 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 16:46:15,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:15,507 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:15,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:15,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 16:46:15,712 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 16:46:15,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1572337244, now seen corresponding path program 2 times [2022-11-25 16:46:15,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:15,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273432028] [2022-11-25 16:46:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:15,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:15,873 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 16:46:15,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:15,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273432028] [2022-11-25 16:46:15,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273432028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481249639] [2022-11-25 16:46:15,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:46:15,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:15,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:15,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:15,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 16:46:15,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:46:15,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:46:15,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 16:46:15,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:16,096 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 16:46:16,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:16,189 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 16:46:16,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481249639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:16,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:16,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 16:46:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943949999] [2022-11-25 16:46:16,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:16,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 16:46:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 16:46:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:46:16,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 238 [2022-11-25 16:46:16,267 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 16:46:16,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:16,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 238 [2022-11-25 16:46:16,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:18,215 INFO L130 PetriNetUnfolder]: 7177/10720 cut-off events. [2022-11-25 16:46:18,215 INFO L131 PetriNetUnfolder]: For 150175/150175 co-relation queries the response was YES. [2022-11-25 16:46:18,264 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 16:46:18,327 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 687 selfloop transitions, 11 changer transitions 0/698 dead transitions. [2022-11-25 16:46:18,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 698 transitions, 11291 flow [2022-11-25 16:46:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:46:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:46:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2022-11-25 16:46:18,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46673669467787116 [2022-11-25 16:46:18,337 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2022-11-25 16:46:18,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2022-11-25 16:46:18,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:18,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2022-11-25 16:46:18,345 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 16:46:18,350 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 16:46:18,351 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 16:46:18,351 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 963 flow. Second operand 12 states and 1333 transitions. [2022-11-25 16:46:18,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 698 transitions, 11291 flow [2022-11-25 16:46:18,508 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 16:46:18,516 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 959 flow [2022-11-25 16:46:18,517 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 16:46:18,517 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2022-11-25 16:46:18,519 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 959 flow [2022-11-25 16:46:18,520 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 16:46:18,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:18,520 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:18,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:18,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 16:46:18,726 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 16:46:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1636210841, now seen corresponding path program 1 times [2022-11-25 16:46:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:18,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262536183] [2022-11-25 16:46:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:18,858 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 16:46:18,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:18,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262536183] [2022-11-25 16:46:18,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262536183] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:18,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61216147] [2022-11-25 16:46:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:18,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:18,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:18,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:18,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 16:46:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:18,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:46:18,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:19,059 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 16:46:19,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:19,167 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 16:46:19,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61216147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:19,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:19,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 16:46:19,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686508604] [2022-11-25 16:46:19,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:19,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 16:46:19,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:19,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 16:46:19,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:46:19,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:46:19,225 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 16:46:19,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:19,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:46:19,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:22,445 INFO L130 PetriNetUnfolder]: 10547/15933 cut-off events. [2022-11-25 16:46:22,446 INFO L131 PetriNetUnfolder]: For 192330/192330 co-relation queries the response was YES. [2022-11-25 16:46:22,547 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 16:46:22,629 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 264 selfloop transitions, 75 changer transitions 0/339 dead transitions. [2022-11-25 16:46:22,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 339 transitions, 3943 flow [2022-11-25 16:46:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 16:46:22,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 16:46:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1695 transitions. [2022-11-25 16:46:22,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47478991596638653 [2022-11-25 16:46:22,635 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1695 transitions. [2022-11-25 16:46:22,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1695 transitions. [2022-11-25 16:46:22,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:22,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1695 transitions. [2022-11-25 16:46:22,641 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 16:46:22,647 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 16:46:22,648 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 16:46:22,648 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 959 flow. Second operand 15 states and 1695 transitions. [2022-11-25 16:46:22,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 339 transitions, 3943 flow [2022-11-25 16:46:23,441 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 16:46:23,448 INFO L231 Difference]: Finished difference. Result has 110 places, 119 transitions, 1732 flow [2022-11-25 16:46:23,448 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 16:46:23,449 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2022-11-25 16:46:23,449 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 119 transitions, 1732 flow [2022-11-25 16:46:23,450 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 16:46:23,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:23,451 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:23,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:23,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 16:46:23,667 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 16:46:23,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash 367500575, now seen corresponding path program 2 times [2022-11-25 16:46:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:23,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934955429] [2022-11-25 16:46:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:23,768 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 16:46:23,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:23,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934955429] [2022-11-25 16:46:23,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934955429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:23,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868178762] [2022-11-25 16:46:23,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:46:23,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:23,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:23,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:23,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 16:46:23,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:46:23,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:46:23,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:46:23,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:24,009 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 16:46:24,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:24,095 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 16:46:24,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868178762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:24,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:24,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-25 16:46:24,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36449774] [2022-11-25 16:46:24,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:24,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 16:46:24,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 16:46:24,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:46:24,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:46:24,153 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 16:46:24,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:24,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:46:24,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:29,149 INFO L130 PetriNetUnfolder]: 15607/23678 cut-off events. [2022-11-25 16:46:29,149 INFO L131 PetriNetUnfolder]: For 388828/388828 co-relation queries the response was YES. [2022-11-25 16:46:29,345 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 16:46:29,473 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 374 selfloop transitions, 115 changer transitions 0/489 dead transitions. [2022-11-25 16:46:29,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 489 transitions, 5748 flow [2022-11-25 16:46:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 16:46:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-25 16:46:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2248 transitions. [2022-11-25 16:46:29,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4722689075630252 [2022-11-25 16:46:29,481 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2248 transitions. [2022-11-25 16:46:29,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2248 transitions. [2022-11-25 16:46:29,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:29,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2248 transitions. [2022-11-25 16:46:29,489 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 16:46:29,497 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 16:46:29,498 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 16:46:29,498 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 1732 flow. Second operand 20 states and 2248 transitions. [2022-11-25 16:46:29,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 489 transitions, 5748 flow [2022-11-25 16:46:33,134 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 16:46:33,141 INFO L231 Difference]: Finished difference. Result has 130 places, 183 transitions, 2897 flow [2022-11-25 16:46:33,142 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 16:46:33,142 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2022-11-25 16:46:33,142 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 183 transitions, 2897 flow [2022-11-25 16:46:33,143 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 16:46:33,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:33,143 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:33,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:33,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:33,349 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 16:46:33,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1484070644, now seen corresponding path program 3 times [2022-11-25 16:46:33,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:33,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68118862] [2022-11-25 16:46:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:33,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:33,455 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 16:46:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:33,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68118862] [2022-11-25 16:46:33,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68118862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:33,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688207400] [2022-11-25 16:46:33,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:46:33,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:33,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:33,460 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:33,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 16:46:33,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 16:46:33,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:46:33,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 16:46:33,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:33,693 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 16:46:33,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:33,803 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 16:46:33,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688207400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:33,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:33,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-11-25 16:46:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387428509] [2022-11-25 16:46:33,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:33,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 16:46:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:33,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 16:46:33,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-11-25 16:46:33,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:46:33,866 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 16:46:33,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:33,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:46:33,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:42,000 INFO L130 PetriNetUnfolder]: 21157/32276 cut-off events. [2022-11-25 16:46:42,000 INFO L131 PetriNetUnfolder]: For 732753/732753 co-relation queries the response was YES. [2022-11-25 16:46:42,311 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 16:46:42,443 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 422 selfloop transitions, 164 changer transitions 0/586 dead transitions. [2022-11-25 16:46:42,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 586 transitions, 7416 flow [2022-11-25 16:46:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 16:46:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-25 16:46:42,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2022-11-25 16:46:42,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726890756302521 [2022-11-25 16:46:42,449 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2022-11-25 16:46:42,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2022-11-25 16:46:42,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:42,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2022-11-25 16:46:42,456 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 16:46:42,464 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 16:46:42,466 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 16:46:42,467 INFO L175 Difference]: Start difference. First operand has 130 places, 183 transitions, 2897 flow. Second operand 22 states and 2475 transitions. [2022-11-25 16:46:42,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 586 transitions, 7416 flow [2022-11-25 16:46:53,387 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 16:46:53,393 INFO L231 Difference]: Finished difference. Result has 156 places, 246 transitions, 4293 flow [2022-11-25 16:46:53,393 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 16:46:53,394 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2022-11-25 16:46:53,394 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 246 transitions, 4293 flow [2022-11-25 16:46:53,394 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 16:46:53,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:53,395 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:53,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:53,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:53,600 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 16:46:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1575156487, now seen corresponding path program 1 times [2022-11-25 16:46:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:53,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303383423] [2022-11-25 16:46:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,773 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 16:46:53,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:53,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303383423] [2022-11-25 16:46:53,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303383423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:53,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583950109] [2022-11-25 16:46:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:53,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:53,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:53,775 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:53,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 16:46:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 16:46:53,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:54,015 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 16:46:54,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:46:54,152 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 16:46:54,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583950109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:46:54,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:46:54,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-25 16:46:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512722191] [2022-11-25 16:46:54,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:46:54,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 16:46:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 16:46:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2022-11-25 16:46:54,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:46:54,242 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 16:46:54,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:54,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:46:54,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:03,658 INFO L130 PetriNetUnfolder]: 25529/38959 cut-off events. [2022-11-25 16:47:03,659 INFO L131 PetriNetUnfolder]: For 1203439/1203439 co-relation queries the response was YES. [2022-11-25 16:47:04,036 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 16:47:04,190 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 398 selfloop transitions, 242 changer transitions 0/640 dead transitions. [2022-11-25 16:47:04,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 640 transitions, 9038 flow [2022-11-25 16:47:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 16:47:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-25 16:47:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2372 transitions. [2022-11-25 16:47:04,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47458983593437376 [2022-11-25 16:47:04,196 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2372 transitions. [2022-11-25 16:47:04,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2372 transitions. [2022-11-25 16:47:04,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:04,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2372 transitions. [2022-11-25 16:47:04,202 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 16:47:04,208 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 16:47:04,210 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 16:47:04,211 INFO L175 Difference]: Start difference. First operand has 156 places, 246 transitions, 4293 flow. Second operand 21 states and 2372 transitions. [2022-11-25 16:47:04,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 640 transitions, 9038 flow [2022-11-25 16:47:21,253 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 16:47:21,260 INFO L231 Difference]: Finished difference. Result has 176 places, 312 transitions, 5952 flow [2022-11-25 16:47:21,260 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 16:47:21,260 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2022-11-25 16:47:21,260 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 312 transitions, 5952 flow [2022-11-25 16:47:21,261 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 16:47:21,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:21,261 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:21,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 16:47:21,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-25 16:47:21,467 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 16:47:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:21,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1832810197, now seen corresponding path program 2 times [2022-11-25 16:47:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:21,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287534211] [2022-11-25 16:47:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:21,613 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 16:47:21,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:21,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287534211] [2022-11-25 16:47:21,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287534211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:47:21,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737321220] [2022-11-25 16:47:21,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:47:21,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:47:21,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:47:21,616 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:47:21,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 16:47:21,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:47:21,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:47:21,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 16:47:21,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:47:21,849 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 16:47:21,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:47:21,977 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 16:47:21,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737321220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:47:21,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:47:21,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-25 16:47:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272338600] [2022-11-25 16:47:21,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:47:21,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 16:47:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:21,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 16:47:21,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2022-11-25 16:47:22,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:47:22,057 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 16:47:22,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:22,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:47:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:35,847 INFO L130 PetriNetUnfolder]: 33559/51267 cut-off events. [2022-11-25 16:47:35,847 INFO L131 PetriNetUnfolder]: For 1685820/1685820 co-relation queries the response was YES. [2022-11-25 16:47:36,797 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 16:47:37,028 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 535 selfloop transitions, 291 changer transitions 0/826 dead transitions. [2022-11-25 16:47:37,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 826 transitions, 12483 flow [2022-11-25 16:47:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 16:47:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-25 16:47:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2919 transitions. [2022-11-25 16:47:37,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47171945701357465 [2022-11-25 16:47:37,034 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2919 transitions. [2022-11-25 16:47:37,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2919 transitions. [2022-11-25 16:47:37,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:37,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2919 transitions. [2022-11-25 16:47:37,042 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 16:47:37,050 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 16:47:37,052 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 16:47:37,053 INFO L175 Difference]: Start difference. First operand has 176 places, 312 transitions, 5952 flow. Second operand 26 states and 2919 transitions. [2022-11-25 16:47:37,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 826 transitions, 12483 flow [2022-11-25 16:48:24,565 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 16:48:24,575 INFO L231 Difference]: Finished difference. Result has 205 places, 419 transitions, 8594 flow [2022-11-25 16:48:24,576 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 16:48:24,576 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2022-11-25 16:48:24,576 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 419 transitions, 8594 flow [2022-11-25 16:48:24,577 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 16:48:24,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:48:24,577 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:24,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 16:48:24,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 16:48:24,778 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 16:48:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash 974222558, now seen corresponding path program 4 times [2022-11-25 16:48:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:24,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486763033] [2022-11-25 16:48:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:24,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:24,925 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 16:48:24,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:24,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486763033] [2022-11-25 16:48:24,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486763033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:48:24,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345098324] [2022-11-25 16:48:24,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 16:48:24,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:24,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:24,927 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:48:24,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9150e10-7e97-482b-ab24-f0c87905a320/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 16:48:25,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 16:48:25,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:48:25,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:48:25,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:48:25,248 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 16:48:25,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:48:25,422 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 16:48:25,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345098324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:48:25,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:48:25,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-25 16:48:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243194381] [2022-11-25 16:48:25,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:48:25,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 16:48:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 16:48:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2022-11-25 16:48:25,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-25 16:48:25,560 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 16:48:25,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:48:25,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-25 16:48:25,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand