./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8 --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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --- 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-2329fc7 [2022-12-13 20:23:12,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:23:12,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:23:12,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:23:12,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:23:12,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:23:12,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:23:12,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:23:12,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:23:12,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:23:12,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:23:12,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:23:12,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:23:12,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:23:12,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:23:12,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:23:12,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:23:12,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:23:12,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:23:12,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:23:12,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:23:12,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:23:12,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:23:12,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:23:12,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:23:12,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:23:12,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:23:12,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:23:12,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:23:12,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:23:12,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:23:12,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:23:12,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:23:12,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:23:12,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:23:12,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:23:12,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:23:12,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:23:12,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:23:12,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:23:12,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:23:12,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:23:12,827 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:23:12,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:23:12,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:23:12,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:23:12,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:23:12,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:23:12,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:23:12,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:23:12,829 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:23:12,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:23:12,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:23:12,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:23:12,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:23:12,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:23:12,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:23:12,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:23:12,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:23:12,832 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:23:12,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:23:12,832 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:23:12,832 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_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b [2022-12-13 20:23:13,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:23:13,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:23:13,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:23:13,026 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:23:13,027 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:23:13,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-12-13 20:23:15,517 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:23:15,677 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:23:15,677 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-12-13 20:23:15,682 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/data/e6c585ad8/8847c25ff98940969085df5f95a9344f/FLAGbc329d796 [2022-12-13 20:23:16,090 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/data/e6c585ad8/8847c25ff98940969085df5f95a9344f [2022-12-13 20:23:16,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:23:16,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:23:16,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:23:16,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:23:16,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:23:16,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7181979a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16, skipping insertion in model container [2022-12-13 20:23:16,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:23:16,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:23:16,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,254 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_d70de090-bb79-47a5-abdb-92fdf079d272/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-12-13 20:23:16,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:23:16,265 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:23:16,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:23:16,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:23:16,289 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_d70de090-bb79-47a5-abdb-92fdf079d272/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-12-13 20:23:16,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:23:16,302 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:23:16,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16 WrapperNode [2022-12-13 20:23:16,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:23:16,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:23:16,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:23:16,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:23:16,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,337 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 287 [2022-12-13 20:23:16,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:23:16,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:23:16,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:23:16,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:23:16,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:23:16,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:23:16,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:23:16,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:23:16,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (1/1) ... [2022-12-13 20:23:16,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:23:16,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:23:16,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:23:16,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:23:16,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:23:16,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:23:16,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:23:16,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:23:16,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 20:23:16,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 20:23:16,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 20:23:16,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 20:23:16,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 20:23:16,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 20:23:16,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 20:23:16,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 20:23:16,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:23:16,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 20:23:16,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 20:23:16,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:23:16,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:23:16,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:23:16,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:23:16,429 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:23:16,526 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:23:16,528 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:23:16,879 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:23:16,978 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:23:16,978 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 20:23:16,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:23:16 BoogieIcfgContainer [2022-12-13 20:23:16,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:23:16,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:23:16,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:23:16,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:23:16,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:23:16" (1/3) ... [2022-12-13 20:23:16,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71516193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:23:16, skipping insertion in model container [2022-12-13 20:23:16,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:23:16" (2/3) ... [2022-12-13 20:23:16,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71516193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:23:16, skipping insertion in model container [2022-12-13 20:23:16,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:23:16" (3/3) ... [2022-12-13 20:23:16,988 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-12-13 20:23:16,995 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:23:17,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:23:17,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-12-13 20:23:17,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:23:17,094 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:23:17,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 266 transitions, 564 flow [2022-12-13 20:23:17,189 INFO L130 PetriNetUnfolder]: 18/262 cut-off events. [2022-12-13 20:23:17,189 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 20:23:17,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 262 events. 18/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 235 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 227. Up to 3 conditions per place. [2022-12-13 20:23:17,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 266 transitions, 564 flow [2022-12-13 20:23:17,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 239 transitions, 499 flow [2022-12-13 20:23:17,202 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:23:17,210 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 239 transitions, 499 flow [2022-12-13 20:23:17,212 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 239 transitions, 499 flow [2022-12-13 20:23:17,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 239 transitions, 499 flow [2022-12-13 20:23:17,251 INFO L130 PetriNetUnfolder]: 17/239 cut-off events. [2022-12-13 20:23:17,251 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 20:23:17,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 17/239 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 233 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 227. Up to 3 conditions per place. [2022-12-13 20:23:17,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 4328 [2022-12-13 20:23:26,412 INFO L134 LiptonReduction]: Checked pairs total: 12375 [2022-12-13 20:23:26,412 INFO L136 LiptonReduction]: Total number of compositions: 249 [2022-12-13 20:23:26,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:23:26,427 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;@764fbb48, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:23:26,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-12-13 20:23:26,429 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 20:23:26,429 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:23:26,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:23:26,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 20:23:26,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:23:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:23:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash 36926, now seen corresponding path program 1 times [2022-12-13 20:23:26,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:23:26,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833189041] [2022-12-13 20:23:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:23:26,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:23:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:23:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:26,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:23:26,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833189041] [2022-12-13 20:23:26,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833189041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:23:26,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:23:26,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:23:26,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713284044] [2022-12-13 20:23:26,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:23:26,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:23:26,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:23:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:23:26,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:23:26,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 515 [2022-12-13 20:23:26,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:26,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:23:26,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 515 [2022-12-13 20:23:26,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:23:30,332 INFO L130 PetriNetUnfolder]: 34971/47415 cut-off events. [2022-12-13 20:23:30,332 INFO L131 PetriNetUnfolder]: For 1826/1826 co-relation queries the response was YES. [2022-12-13 20:23:30,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96680 conditions, 47415 events. 34971/47415 cut-off events. For 1826/1826 co-relation queries the response was YES. Maximal size of possible extension queue 2635. Compared 291706 event pairs, 30576 based on Foata normal form. 0/24632 useless extension candidates. Maximal degree in co-relation 44025. Up to 22940 conditions per place. [2022-12-13 20:23:30,561 INFO L137 encePairwiseOnDemand]: 503/515 looper letters, 89 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2022-12-13 20:23:30,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 420 flow [2022-12-13 20:23:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:23:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:23:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 762 transitions. [2022-12-13 20:23:30,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49320388349514566 [2022-12-13 20:23:30,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 762 transitions. [2022-12-13 20:23:30,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 762 transitions. [2022-12-13 20:23:30,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:23:30,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 762 transitions. [2022-12-13 20:23:30,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:30,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:30,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:30,591 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 133 flow. Second operand 3 states and 762 transitions. [2022-12-13 20:23:30,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 420 flow [2022-12-13 20:23:30,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 96 transitions, 394 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 20:23:30,652 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 148 flow [2022-12-13 20:23:30,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2022-12-13 20:23:30,656 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2022-12-13 20:23:30,656 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 148 flow [2022-12-13 20:23:30,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:30,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:23:30,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:23:30,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:23:30,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:23:30,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:23:30,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1147467, now seen corresponding path program 1 times [2022-12-13 20:23:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:23:30,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601252851] [2022-12-13 20:23:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:23:30,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:23:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:23:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:30,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:23:30,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601252851] [2022-12-13 20:23:30,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601252851] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:23:30,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198873534] [2022-12-13 20:23:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:23:30,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:23:30,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:23:30,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:23:30,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:23:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:23:30,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:23:30,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:23:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:30,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:23:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:30,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198873534] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:23:30,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:23:30,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 20:23:30,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749158639] [2022-12-13 20:23:30,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:23:30,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:23:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:23:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:23:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:23:30,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 515 [2022-12-13 20:23:30,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 220.14285714285714) internal successors, (1541), 7 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:30,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:23:30,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 515 [2022-12-13 20:23:30,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:23:38,905 INFO L130 PetriNetUnfolder]: 87432/118536 cut-off events. [2022-12-13 20:23:38,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:23:39,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239839 conditions, 118536 events. 87432/118536 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5836. Compared 797627 event pairs, 76440 based on Foata normal form. 0/61590 useless extension candidates. Maximal degree in co-relation 191827. Up to 22938 conditions per place. [2022-12-13 20:23:39,358 INFO L137 encePairwiseOnDemand]: 507/515 looper letters, 210 selfloop transitions, 21 changer transitions 0/234 dead transitions. [2022-12-13 20:23:39,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 234 transitions, 1036 flow [2022-12-13 20:23:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:23:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:23:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1770 transitions. [2022-12-13 20:23:39,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4909847434119279 [2022-12-13 20:23:39,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1770 transitions. [2022-12-13 20:23:39,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1770 transitions. [2022-12-13 20:23:39,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:23:39,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1770 transitions. [2022-12-13 20:23:39,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 252.85714285714286) internal successors, (1770), 7 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:39,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 515.0) internal successors, (4120), 8 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:39,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 515.0) internal successors, (4120), 8 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:39,375 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 148 flow. Second operand 7 states and 1770 transitions. [2022-12-13 20:23:39,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 234 transitions, 1036 flow [2022-12-13 20:23:39,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 234 transitions, 1022 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:23:39,380 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 279 flow [2022-12-13 20:23:39,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2022-12-13 20:23:39,381 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2022-12-13 20:23:39,381 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 279 flow [2022-12-13 20:23:39,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 220.14285714285714) internal successors, (1541), 7 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:39,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:23:39,382 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 20:23:39,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:23:39,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 20:23:39,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:23:39,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:23:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash 35573342, now seen corresponding path program 1 times [2022-12-13 20:23:39,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:23:39,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369287062] [2022-12-13 20:23:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:23:39,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:23:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:23:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:23:39,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:23:39,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369287062] [2022-12-13 20:23:39,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369287062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:23:39,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:23:39,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:23:39,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941588229] [2022-12-13 20:23:39,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:23:39,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:23:39,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:23:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:23:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:23:39,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 515 [2022-12-13 20:23:39,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:39,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:23:39,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 515 [2022-12-13 20:23:39,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:23:47,495 INFO L130 PetriNetUnfolder]: 87426/118528 cut-off events. [2022-12-13 20:23:47,495 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 20:23:47,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239841 conditions, 118528 events. 87426/118528 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6024. Compared 802532 event pairs, 76440 based on Foata normal form. 2/61588 useless extension candidates. Maximal degree in co-relation 143885. Up to 114673 conditions per place. [2022-12-13 20:23:48,004 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 58 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2022-12-13 20:23:48,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 343 flow [2022-12-13 20:23:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:23:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:23:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2022-12-13 20:23:48,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.456957928802589 [2022-12-13 20:23:48,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2022-12-13 20:23:48,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2022-12-13 20:23:48,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:23:48,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2022-12-13 20:23:48,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:48,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:48,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:48,011 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 279 flow. Second operand 3 states and 706 transitions. [2022-12-13 20:23:48,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 343 flow [2022-12-13 20:23:48,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 324 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 20:23:48,013 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 208 flow [2022-12-13 20:23:48,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2022-12-13 20:23:48,014 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2022-12-13 20:23:48,014 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 208 flow [2022-12-13 20:23:48,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:48,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:23:48,015 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 20:23:48,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:23:48,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:23:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:23:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash -173669222, now seen corresponding path program 2 times [2022-12-13 20:23:48,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:23:48,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231604711] [2022-12-13 20:23:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:23:48,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:23:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:23:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:48,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:23:48,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231604711] [2022-12-13 20:23:48,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231604711] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:23:48,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019167813] [2022-12-13 20:23:48,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:23:48,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:23:48,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:23:48,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:23:48,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:23:48,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:23:48,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:23:48,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:23:48,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:23:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 20:23:48,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:23:48,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019167813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:23:48,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:23:48,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 20:23:48,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857484619] [2022-12-13 20:23:48,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:23:48,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:23:48,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:23:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:23:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:23:48,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 515 [2022-12-13 20:23:48,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:48,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:23:48,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 515 [2022-12-13 20:23:48,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:23:55,223 INFO L130 PetriNetUnfolder]: 87426/118527 cut-off events. [2022-12-13 20:23:55,223 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:23:55,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239826 conditions, 118527 events. 87426/118527 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6106. Compared 803399 event pairs, 76440 based on Foata normal form. 1/61587 useless extension candidates. Maximal degree in co-relation 239814. Up to 114667 conditions per place. [2022-12-13 20:23:55,815 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 52 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2022-12-13 20:23:55,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 314 flow [2022-12-13 20:23:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:23:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:23:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2022-12-13 20:23:55,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459546925566343 [2022-12-13 20:23:55,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2022-12-13 20:23:55,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2022-12-13 20:23:55,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:23:55,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2022-12-13 20:23:55,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:55,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:55,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:55,825 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 208 flow. Second operand 3 states and 710 transitions. [2022-12-13 20:23:55,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 314 flow [2022-12-13 20:23:55,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:23:55,827 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 209 flow [2022-12-13 20:23:55,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2022-12-13 20:23:55,828 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2022-12-13 20:23:55,828 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 209 flow [2022-12-13 20:23:55,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:55,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:23:55,829 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 20:23:55,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:23:56,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:23:56,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:23:56,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:23:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash -765267278, now seen corresponding path program 1 times [2022-12-13 20:23:56,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:23:56,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32731715] [2022-12-13 20:23:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:23:56,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:23:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:23:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:56,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:23:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32731715] [2022-12-13 20:23:56,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32731715] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:23:56,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463181363] [2022-12-13 20:23:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:23:56,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:23:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:23:56,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:23:56,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:23:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:23:56,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:23:56,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:23:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:56,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:23:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:56,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463181363] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:23:56,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:23:56,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 20:23:56,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130268468] [2022-12-13 20:23:56,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:23:56,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 20:23:56,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:23:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 20:23:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:23:56,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 515 [2022-12-13 20:23:56,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 209 flow. Second operand has 13 states, 13 states have (on average 220.15384615384616) internal successors, (2862), 13 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:23:56,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:23:56,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 515 [2022-12-13 20:23:56,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:24:12,616 INFO L130 PetriNetUnfolder]: 192336/260757 cut-off events. [2022-12-13 20:24:12,616 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-12-13 20:24:13,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527604 conditions, 260757 events. 192336/260757 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 7948. Compared 1841471 event pairs, 168168 based on Foata normal form. 6/135505 useless extension candidates. Maximal degree in co-relation 527591. Up to 22943 conditions per place. [2022-12-13 20:24:13,812 INFO L137 encePairwiseOnDemand]: 510/515 looper letters, 455 selfloop transitions, 31 changer transitions 0/489 dead transitions. [2022-12-13 20:24:13,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 489 transitions, 2195 flow [2022-12-13 20:24:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:24:13,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:24:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3120 transitions. [2022-12-13 20:24:13,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5048543689320388 [2022-12-13 20:24:13,819 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3120 transitions. [2022-12-13 20:24:13,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3120 transitions. [2022-12-13 20:24:13,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:24:13,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3120 transitions. [2022-12-13 20:24:13,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 260.0) internal successors, (3120), 12 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:13,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 515.0) internal successors, (6695), 13 states have internal predecessors, (6695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:13,833 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 515.0) internal successors, (6695), 13 states have internal predecessors, (6695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:13,834 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 209 flow. Second operand 12 states and 3120 transitions. [2022-12-13 20:24:13,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 489 transitions, 2195 flow [2022-12-13 20:24:13,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 489 transitions, 2171 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:24:13,840 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 407 flow [2022-12-13 20:24:13,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=407, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2022-12-13 20:24:13,841 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2022-12-13 20:24:13,842 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 407 flow [2022-12-13 20:24:13,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 220.15384615384616) internal successors, (2862), 13 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:13,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:24:13,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:24:13,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:24:14,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:24:14,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:24:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:24:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash -744482953, now seen corresponding path program 1 times [2022-12-13 20:24:14,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:24:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831654666] [2022-12-13 20:24:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:24:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:24:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:24:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:24:14,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:24:14,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831654666] [2022-12-13 20:24:14,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831654666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:24:14,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:24:14,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:24:14,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842402699] [2022-12-13 20:24:14,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:24:14,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:24:14,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:24:14,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:24:14,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:24:14,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 515 [2022-12-13 20:24:14,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 216.5) internal successors, (866), 4 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:14,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:24:14,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 515 [2022-12-13 20:24:14,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:24:32,928 INFO L130 PetriNetUnfolder]: 212092/290018 cut-off events. [2022-12-13 20:24:32,928 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-12-13 20:24:33,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586952 conditions, 290018 events. 212092/290018 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 9126. Compared 2121544 event pairs, 187627 based on Foata normal form. 2200/158224 useless extension candidates. Maximal degree in co-relation 586933. Up to 252275 conditions per place. [2022-12-13 20:24:34,524 INFO L137 encePairwiseOnDemand]: 505/515 looper letters, 140 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2022-12-13 20:24:34,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 147 transitions, 944 flow [2022-12-13 20:24:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:24:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:24:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1194 transitions. [2022-12-13 20:24:34,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46368932038834954 [2022-12-13 20:24:34,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1194 transitions. [2022-12-13 20:24:34,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1194 transitions. [2022-12-13 20:24:34,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:24:34,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1194 transitions. [2022-12-13 20:24:34,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:34,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 515.0) internal successors, (3090), 6 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:34,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 515.0) internal successors, (3090), 6 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:34,533 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 407 flow. Second operand 5 states and 1194 transitions. [2022-12-13 20:24:34,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 147 transitions, 944 flow [2022-12-13 20:24:34,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 147 transitions, 820 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-12-13 20:24:34,537 INFO L231 Difference]: Finished difference. Result has 78 places, 80 transitions, 360 flow [2022-12-13 20:24:34,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=78, PETRI_TRANSITIONS=80} [2022-12-13 20:24:34,538 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2022-12-13 20:24:34,538 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 80 transitions, 360 flow [2022-12-13 20:24:34,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 216.5) internal successors, (866), 4 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:34,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:24:34,538 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:24:34,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:24:34,539 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:24:34,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:24:34,539 INFO L85 PathProgramCache]: Analyzing trace with hash 951956518, now seen corresponding path program 1 times [2022-12-13 20:24:34,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:24:34,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678769308] [2022-12-13 20:24:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:24:34,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:24:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:24:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:24:34,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:24:34,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678769308] [2022-12-13 20:24:34,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678769308] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:24:34,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761603872] [2022-12-13 20:24:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:24:34,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:24:34,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:24:34,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:24:34,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:24:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:24:34,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:24:34,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:24:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:24:34,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:24:34,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761603872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:24:34,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:24:34,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 20:24:34,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522425627] [2022-12-13 20:24:34,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:24:34,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:24:34,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:24:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:24:34,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:24:34,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 515 [2022-12-13 20:24:34,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:34,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:24:34,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 515 [2022-12-13 20:24:34,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:24:51,714 INFO L130 PetriNetUnfolder]: 172789/233742 cut-off events. [2022-12-13 20:24:51,714 INFO L131 PetriNetUnfolder]: For 35922/35922 co-relation queries the response was YES. [2022-12-13 20:24:52,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529258 conditions, 233742 events. 172789/233742 cut-off events. For 35922/35922 co-relation queries the response was YES. Maximal size of possible extension queue 7768. Compared 1640399 event pairs, 151063 based on Foata normal form. 0/134906 useless extension candidates. Maximal degree in co-relation 529237. Up to 228902 conditions per place. [2022-12-13 20:24:53,079 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 74 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2022-12-13 20:24:53,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 498 flow [2022-12-13 20:24:53,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:24:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:24:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2022-12-13 20:24:53,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4627831715210356 [2022-12-13 20:24:53,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2022-12-13 20:24:53,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2022-12-13 20:24:53,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:24:53,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2022-12-13 20:24:53,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:53,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:53,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:53,086 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 360 flow. Second operand 3 states and 715 transitions. [2022-12-13 20:24:53,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 498 flow [2022-12-13 20:24:53,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 78 transitions, 492 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 20:24:53,124 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 344 flow [2022-12-13 20:24:53,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2022-12-13 20:24:53,124 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2022-12-13 20:24:53,124 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 344 flow [2022-12-13 20:24:53,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:53,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:24:53,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:24:53,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 20:24:53,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:24:53,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:24:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:24:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 951956647, now seen corresponding path program 1 times [2022-12-13 20:24:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:24:53,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746208791] [2022-12-13 20:24:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:24:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:24:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:24:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:24:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:24:53,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746208791] [2022-12-13 20:24:53,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746208791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:24:53,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:24:53,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:24:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852134590] [2022-12-13 20:24:53,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:24:53,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:24:53,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:24:53,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:24:53,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:24:53,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 515 [2022-12-13 20:24:53,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:24:53,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:24:53,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 515 [2022-12-13 20:24:53,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:25:06,055 INFO L130 PetriNetUnfolder]: 147863/201182 cut-off events. [2022-12-13 20:25:06,055 INFO L131 PetriNetUnfolder]: For 17610/17610 co-relation queries the response was YES. [2022-12-13 20:25:06,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451222 conditions, 201182 events. 147863/201182 cut-off events. For 17610/17610 co-relation queries the response was YES. Maximal size of possible extension queue 5245. Compared 1420199 event pairs, 17160 based on Foata normal form. 0/124247 useless extension candidates. Maximal degree in co-relation 451200. Up to 173316 conditions per place. [2022-12-13 20:25:07,121 INFO L137 encePairwiseOnDemand]: 511/515 looper letters, 99 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2022-12-13 20:25:07,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 598 flow [2022-12-13 20:25:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:25:07,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:25:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 949 transitions. [2022-12-13 20:25:07,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46067961165048543 [2022-12-13 20:25:07,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 949 transitions. [2022-12-13 20:25:07,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 949 transitions. [2022-12-13 20:25:07,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:25:07,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 949 transitions. [2022-12-13 20:25:07,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.25) internal successors, (949), 4 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:07,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 515.0) internal successors, (2575), 5 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:07,128 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 515.0) internal successors, (2575), 5 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:07,128 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 344 flow. Second operand 4 states and 949 transitions. [2022-12-13 20:25:07,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 598 flow [2022-12-13 20:25:07,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:25:07,159 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 339 flow [2022-12-13 20:25:07,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2022-12-13 20:25:07,159 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2022-12-13 20:25:07,159 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 339 flow [2022-12-13 20:25:07,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:07,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:25:07,160 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:25:07,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:25:07,160 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:25:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:25:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 951956648, now seen corresponding path program 1 times [2022-12-13 20:25:07,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:25:07,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163887930] [2022-12-13 20:25:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:25:07,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:25:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:25:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:25:07,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:25:07,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163887930] [2022-12-13 20:25:07,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163887930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:25:07,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:25:07,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:25:07,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564668195] [2022-12-13 20:25:07,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:25:07,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:25:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:25:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:25:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:25:07,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 515 [2022-12-13 20:25:07,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:07,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:25:07,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 515 [2022-12-13 20:25:07,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:25:15,373 INFO L130 PetriNetUnfolder]: 90377/126195 cut-off events. [2022-12-13 20:25:15,373 INFO L131 PetriNetUnfolder]: For 20294/20294 co-relation queries the response was YES. [2022-12-13 20:25:15,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282791 conditions, 126195 events. 90377/126195 cut-off events. For 20294/20294 co-relation queries the response was YES. Maximal size of possible extension queue 3416. Compared 862469 event pairs, 61754 based on Foata normal form. 0/89872 useless extension candidates. Maximal degree in co-relation 282768. Up to 96298 conditions per place. [2022-12-13 20:25:16,152 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 96 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2022-12-13 20:25:16,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 587 flow [2022-12-13 20:25:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:25:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:25:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 731 transitions. [2022-12-13 20:25:16,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47313915857605177 [2022-12-13 20:25:16,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 731 transitions. [2022-12-13 20:25:16,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 731 transitions. [2022-12-13 20:25:16,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:25:16,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 731 transitions. [2022-12-13 20:25:16,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:16,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:16,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:16,158 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 339 flow. Second operand 3 states and 731 transitions. [2022-12-13 20:25:16,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 587 flow [2022-12-13 20:25:16,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 584 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:25:16,237 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 334 flow [2022-12-13 20:25:16,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2022-12-13 20:25:16,237 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2022-12-13 20:25:16,237 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 334 flow [2022-12-13 20:25:16,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:16,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:25:16,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:25:16,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:25:16,238 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:25:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:25:16,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1023422880, now seen corresponding path program 1 times [2022-12-13 20:25:16,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:25:16,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147362423] [2022-12-13 20:25:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:25:16,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:25:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:25:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:25:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:25:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147362423] [2022-12-13 20:25:16,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147362423] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:25:16,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:25:16,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:25:16,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342269778] [2022-12-13 20:25:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:25:16,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:25:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:25:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:25:16,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:25:16,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 515 [2022-12-13 20:25:16,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:16,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:25:16,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 515 [2022-12-13 20:25:16,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:25:26,158 INFO L130 PetriNetUnfolder]: 98638/132861 cut-off events. [2022-12-13 20:25:26,158 INFO L131 PetriNetUnfolder]: For 61379/61379 co-relation queries the response was YES. [2022-12-13 20:25:26,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312292 conditions, 132861 events. 98638/132861 cut-off events. For 61379/61379 co-relation queries the response was YES. Maximal size of possible extension queue 4284. Compared 873691 event pairs, 29953 based on Foata normal form. 0/103732 useless extension candidates. Maximal degree in co-relation 312270. Up to 95613 conditions per place. [2022-12-13 20:25:26,928 INFO L137 encePairwiseOnDemand]: 507/515 looper letters, 93 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2022-12-13 20:25:26,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 596 flow [2022-12-13 20:25:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:25:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:25:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2022-12-13 20:25:26,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47443365695792883 [2022-12-13 20:25:26,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2022-12-13 20:25:26,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2022-12-13 20:25:26,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:25:26,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2022-12-13 20:25:26,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:26,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:26,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:26,936 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 334 flow. Second operand 3 states and 733 transitions. [2022-12-13 20:25:26,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 596 flow [2022-12-13 20:25:26,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:25:27,000 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 362 flow [2022-12-13 20:25:27,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2022-12-13 20:25:27,000 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2022-12-13 20:25:27,000 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 362 flow [2022-12-13 20:25:27,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:27,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:25:27,001 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:25:27,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:25:27,002 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:25:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:25:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash 235861917, now seen corresponding path program 1 times [2022-12-13 20:25:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:25:27,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120487524] [2022-12-13 20:25:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:25:27,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:25:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:25:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:25:27,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:25:27,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120487524] [2022-12-13 20:25:27,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120487524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:25:27,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:25:27,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:25:27,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327935650] [2022-12-13 20:25:27,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:25:27,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:25:27,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:25:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:25:27,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:25:27,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 515 [2022-12-13 20:25:27,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 217.5) internal successors, (870), 4 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:27,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:25:27,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 515 [2022-12-13 20:25:27,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:25:35,728 INFO L130 PetriNetUnfolder]: 91056/122879 cut-off events. [2022-12-13 20:25:35,728 INFO L131 PetriNetUnfolder]: For 30135/30135 co-relation queries the response was YES. [2022-12-13 20:25:36,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292915 conditions, 122879 events. 91056/122879 cut-off events. For 30135/30135 co-relation queries the response was YES. Maximal size of possible extension queue 4043. Compared 804111 event pairs, 69571 based on Foata normal form. 184/89745 useless extension candidates. Maximal degree in co-relation 292891. Up to 117487 conditions per place. [2022-12-13 20:25:36,479 INFO L137 encePairwiseOnDemand]: 506/515 looper letters, 84 selfloop transitions, 14 changer transitions 1/102 dead transitions. [2022-12-13 20:25:36,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 624 flow [2022-12-13 20:25:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:25:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:25:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 932 transitions. [2022-12-13 20:25:36,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4524271844660194 [2022-12-13 20:25:36,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 932 transitions. [2022-12-13 20:25:36,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 932 transitions. [2022-12-13 20:25:36,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:25:36,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 932 transitions. [2022-12-13 20:25:36,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:36,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 515.0) internal successors, (2575), 5 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:36,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 515.0) internal successors, (2575), 5 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:36,486 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 362 flow. Second operand 4 states and 932 transitions. [2022-12-13 20:25:36,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 624 flow [2022-12-13 20:25:36,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 620 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:25:36,526 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 417 flow [2022-12-13 20:25:36,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2022-12-13 20:25:36,527 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2022-12-13 20:25:36,527 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 417 flow [2022-12-13 20:25:36,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.5) internal successors, (870), 4 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:36,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:25:36,527 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:25:36,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:25:36,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:25:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:25:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1661241774, now seen corresponding path program 1 times [2022-12-13 20:25:36,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:25:36,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313934602] [2022-12-13 20:25:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:25:36,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:25:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:25:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:25:36,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:25:36,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313934602] [2022-12-13 20:25:36,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313934602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:25:36,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:25:36,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:25:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875156305] [2022-12-13 20:25:36,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:25:36,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:25:36,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:25:36,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:25:36,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:25:36,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 515 [2022-12-13 20:25:36,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 417 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:36,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:25:36,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 515 [2022-12-13 20:25:36,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:25:45,502 INFO L130 PetriNetUnfolder]: 91056/122054 cut-off events. [2022-12-13 20:25:45,502 INFO L131 PetriNetUnfolder]: For 33900/33900 co-relation queries the response was YES. [2022-12-13 20:25:45,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301851 conditions, 122054 events. 91056/122054 cut-off events. For 33900/33900 co-relation queries the response was YES. Maximal size of possible extension queue 3863. Compared 780415 event pairs, 69571 based on Foata normal form. 0/88717 useless extension candidates. Maximal degree in co-relation 301825. Up to 119465 conditions per place. [2022-12-13 20:25:46,436 INFO L137 encePairwiseOnDemand]: 513/515 looper letters, 72 selfloop transitions, 1 changer transitions 3/78 dead transitions. [2022-12-13 20:25:46,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 567 flow [2022-12-13 20:25:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:25:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:25:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2022-12-13 20:25:46,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.458252427184466 [2022-12-13 20:25:46,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2022-12-13 20:25:46,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2022-12-13 20:25:46,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:25:46,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2022-12-13 20:25:46,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:46,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:46,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:46,442 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 417 flow. Second operand 3 states and 708 transitions. [2022-12-13 20:25:46,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 567 flow [2022-12-13 20:25:46,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 536 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 20:25:46,496 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 375 flow [2022-12-13 20:25:46,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2022-12-13 20:25:46,497 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 16 predicate places. [2022-12-13 20:25:46,497 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 375 flow [2022-12-13 20:25:46,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:46,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:25:46,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:25:46,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:25:46,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:25:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:25:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1908812837, now seen corresponding path program 1 times [2022-12-13 20:25:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:25:46,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466557913] [2022-12-13 20:25:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:25:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:25:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:25:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:25:46,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:25:46,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466557913] [2022-12-13 20:25:46,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466557913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:25:46,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:25:46,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:25:46,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886667220] [2022-12-13 20:25:46,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:25:46,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:25:46,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:25:46,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:25:46,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:25:46,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 515 [2022-12-13 20:25:46,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:46,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:25:46,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 515 [2022-12-13 20:25:46,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:25:53,738 INFO L130 PetriNetUnfolder]: 71092/97767 cut-off events. [2022-12-13 20:25:53,738 INFO L131 PetriNetUnfolder]: For 31087/31087 co-relation queries the response was YES. [2022-12-13 20:25:54,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244976 conditions, 97767 events. 71092/97767 cut-off events. For 31087/31087 co-relation queries the response was YES. Maximal size of possible extension queue 2419. Compared 613598 event pairs, 29420 based on Foata normal form. 720/75087 useless extension candidates. Maximal degree in co-relation 244951. Up to 82541 conditions per place. [2022-12-13 20:25:54,285 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 84 selfloop transitions, 2 changer transitions 6/94 dead transitions. [2022-12-13 20:25:54,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 94 transitions, 607 flow [2022-12-13 20:25:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:25:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:25:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2022-12-13 20:25:54,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4673139158576052 [2022-12-13 20:25:54,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2022-12-13 20:25:54,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2022-12-13 20:25:54,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:25:54,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2022-12-13 20:25:54,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:54,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:54,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:54,291 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 375 flow. Second operand 3 states and 722 transitions. [2022-12-13 20:25:54,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 94 transitions, 607 flow [2022-12-13 20:25:54,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 594 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 20:25:54,732 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 378 flow [2022-12-13 20:25:54,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2022-12-13 20:25:54,733 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2022-12-13 20:25:54,733 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 378 flow [2022-12-13 20:25:54,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:54,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:25:54,733 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-12-13 20:25:54,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:25:54,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:25:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:25:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1431041742, now seen corresponding path program 2 times [2022-12-13 20:25:54,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:25:54,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30886768] [2022-12-13 20:25:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:25:54,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:25:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:25:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:25:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:25:54,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30886768] [2022-12-13 20:25:54,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30886768] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:25:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362328346] [2022-12-13 20:25:54,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:25:54,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:25:54,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:25:54,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:25:54,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:25:54,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:25:54,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:25:54,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:25:54,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:25:54,985 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 20:25:54,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:25:54,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362328346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:25:54,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:25:54,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-12-13 20:25:54,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028874645] [2022-12-13 20:25:54,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:25:54,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:25:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:25:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:25:54,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-12-13 20:25:55,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 515 [2022-12-13 20:25:55,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:25:55,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:25:55,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 515 [2022-12-13 20:25:55,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:26:01,057 INFO L130 PetriNetUnfolder]: 59052/81385 cut-off events. [2022-12-13 20:26:01,057 INFO L131 PetriNetUnfolder]: For 44287/44287 co-relation queries the response was YES. [2022-12-13 20:26:01,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203393 conditions, 81385 events. 59052/81385 cut-off events. For 44287/44287 co-relation queries the response was YES. Maximal size of possible extension queue 1989. Compared 502143 event pairs, 47720 based on Foata normal form. 2/64827 useless extension candidates. Maximal degree in co-relation 203367. Up to 79585 conditions per place. [2022-12-13 20:26:01,535 INFO L137 encePairwiseOnDemand]: 511/515 looper letters, 68 selfloop transitions, 1 changer transitions 2/73 dead transitions. [2022-12-13 20:26:01,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 492 flow [2022-12-13 20:26:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:26:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:26:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2022-12-13 20:26:01,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45048543689320386 [2022-12-13 20:26:01,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2022-12-13 20:26:01,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2022-12-13 20:26:01,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:26:01,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2022-12-13 20:26:01,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:01,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:01,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:01,540 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 378 flow. Second operand 3 states and 696 transitions. [2022-12-13 20:26:01,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 492 flow [2022-12-13 20:26:01,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 418 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-12-13 20:26:01,587 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 264 flow [2022-12-13 20:26:01,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2022-12-13 20:26:01,587 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2022-12-13 20:26:01,587 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 264 flow [2022-12-13 20:26:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:01,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:26:01,588 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:26:01,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:26:01,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:26:01,789 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:26:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:26:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash 130357723, now seen corresponding path program 1 times [2022-12-13 20:26:01,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:26:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787140159] [2022-12-13 20:26:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:26:01,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:26:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:26:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:26:02,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:26:02,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787140159] [2022-12-13 20:26:02,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787140159] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:26:02,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950390767] [2022-12-13 20:26:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:26:02,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:26:02,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:26:02,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:26:02,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:26:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:26:02,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 20:26:02,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:26:02,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 20:26:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:26:02,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:26:02,450 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:26:02,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2022-12-13 20:26:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:26:02,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950390767] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:26:02,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:26:02,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 18 [2022-12-13 20:26:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827680589] [2022-12-13 20:26:02,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:26:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 20:26:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:26:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 20:26:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-12-13 20:26:03,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 515 [2022-12-13 20:26:03,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 264 flow. Second operand has 20 states, 20 states have (on average 189.1) internal successors, (3782), 20 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:03,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:26:03,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 515 [2022-12-13 20:26:03,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:26:29,812 INFO L130 PetriNetUnfolder]: 281621/387884 cut-off events. [2022-12-13 20:26:29,812 INFO L131 PetriNetUnfolder]: For 49051/49051 co-relation queries the response was YES. [2022-12-13 20:26:30,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911647 conditions, 387884 events. 281621/387884 cut-off events. For 49051/49051 co-relation queries the response was YES. Maximal size of possible extension queue 9707. Compared 2913746 event pairs, 31180 based on Foata normal form. 2160/314934 useless extension candidates. Maximal degree in co-relation 911630. Up to 66781 conditions per place. [2022-12-13 20:26:31,749 INFO L137 encePairwiseOnDemand]: 501/515 looper letters, 400 selfloop transitions, 53 changer transitions 15/469 dead transitions. [2022-12-13 20:26:31,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 469 transitions, 2292 flow [2022-12-13 20:26:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 20:26:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 20:26:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4744 transitions. [2022-12-13 20:26:31,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4005065428450823 [2022-12-13 20:26:31,757 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4744 transitions. [2022-12-13 20:26:31,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4744 transitions. [2022-12-13 20:26:31,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:26:31,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4744 transitions. [2022-12-13 20:26:31,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 206.2608695652174) internal successors, (4744), 23 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:31,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 515.0) internal successors, (12360), 24 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:31,774 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 515.0) internal successors, (12360), 24 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:31,774 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 264 flow. Second operand 23 states and 4744 transitions. [2022-12-13 20:26:31,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 469 transitions, 2292 flow [2022-12-13 20:26:31,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 469 transitions, 2279 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 20:26:31,807 INFO L231 Difference]: Finished difference. Result has 102 places, 125 transitions, 727 flow [2022-12-13 20:26:31,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=727, PETRI_PLACES=102, PETRI_TRANSITIONS=125} [2022-12-13 20:26:31,807 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 38 predicate places. [2022-12-13 20:26:31,807 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 125 transitions, 727 flow [2022-12-13 20:26:31,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 189.1) internal successors, (3782), 20 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:31,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:26:31,808 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:26:31,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:26:32,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 20:26:32,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:26:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:26:32,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1276609693, now seen corresponding path program 2 times [2022-12-13 20:26:32,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:26:32,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452362383] [2022-12-13 20:26:32,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:26:32,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:26:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:26:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:26:32,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:26:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452362383] [2022-12-13 20:26:32,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452362383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:26:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728065364] [2022-12-13 20:26:32,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:26:32,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:26:32,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:26:32,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:26:32,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:26:32,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:26:32,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:26:32,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 20:26:32,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:26:32,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:26:32,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 20:26:32,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 20:26:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:26:32,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:26:32,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728065364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:26:32,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:26:32,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2022-12-13 20:26:32,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044685558] [2022-12-13 20:26:32,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:26:32,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:26:32,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:26:32,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:26:32,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:26:33,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 515 [2022-12-13 20:26:33,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 125 transitions, 727 flow. Second operand has 8 states, 8 states have (on average 202.75) internal successors, (1622), 8 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:26:33,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:26:33,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 515 [2022-12-13 20:26:33,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:27:21,385 INFO L130 PetriNetUnfolder]: 362831/498024 cut-off events. [2022-12-13 20:27:21,386 INFO L131 PetriNetUnfolder]: For 1839694/1839694 co-relation queries the response was YES. [2022-12-13 20:27:23,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682336 conditions, 498024 events. 362831/498024 cut-off events. For 1839694/1839694 co-relation queries the response was YES. Maximal size of possible extension queue 12406. Compared 3785932 event pairs, 117840 based on Foata normal form. 5040/439214 useless extension candidates. Maximal degree in co-relation 1682301. Up to 297881 conditions per place. [2022-12-13 20:27:25,013 INFO L137 encePairwiseOnDemand]: 506/515 looper letters, 163 selfloop transitions, 34 changer transitions 9/208 dead transitions. [2022-12-13 20:27:25,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 208 transitions, 1579 flow [2022-12-13 20:27:25,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:27:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:27:25,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1507 transitions. [2022-12-13 20:27:25,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41803051317614426 [2022-12-13 20:27:25,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1507 transitions. [2022-12-13 20:27:25,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1507 transitions. [2022-12-13 20:27:25,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:27:25,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1507 transitions. [2022-12-13 20:27:25,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.28571428571428) internal successors, (1507), 7 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:27:25,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 515.0) internal successors, (4120), 8 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:27:25,022 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 515.0) internal successors, (4120), 8 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:27:25,023 INFO L175 Difference]: Start difference. First operand has 102 places, 125 transitions, 727 flow. Second operand 7 states and 1507 transitions. [2022-12-13 20:27:25,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 208 transitions, 1579 flow [2022-12-13 20:30:19,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 208 transitions, 1549 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-12-13 20:30:19,787 INFO L231 Difference]: Finished difference. Result has 109 places, 138 transitions, 921 flow [2022-12-13 20:30:19,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=921, PETRI_PLACES=109, PETRI_TRANSITIONS=138} [2022-12-13 20:30:19,788 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 45 predicate places. [2022-12-13 20:30:19,788 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 138 transitions, 921 flow [2022-12-13 20:30:19,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 202.75) internal successors, (1622), 8 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:30:19,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:19,788 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:19,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:30:19,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d70de090-bb79-47a5-abdb-92fdf079d272/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 20:30:19,990 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:30:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:19,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1767893745, now seen corresponding path program 1 times [2022-12-13 20:30:19,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:19,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892762174] [2022-12-13 20:30:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:19,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:30:20,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:20,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892762174] [2022-12-13 20:30:20,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892762174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:20,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:20,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:30:20,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054062350] [2022-12-13 20:30:20,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:20,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:30:20,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:20,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:30:20,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:30:20,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 515 [2022-12-13 20:30:20,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 138 transitions, 921 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:30:20,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:20,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 515 [2022-12-13 20:30:20,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:07,633 INFO L130 PetriNetUnfolder]: 360511/497244 cut-off events. [2022-12-13 20:31:07,634 INFO L131 PetriNetUnfolder]: For 1820407/1820407 co-relation queries the response was YES. [2022-12-13 20:31:09,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729588 conditions, 497244 events. 360511/497244 cut-off events. For 1820407/1820407 co-relation queries the response was YES. Maximal size of possible extension queue 12576. Compared 3865402 event pairs, 117090 based on Foata normal form. 2130/434664 useless extension candidates. Maximal degree in co-relation 1729550. Up to 313381 conditions per place. [2022-12-13 20:31:11,407 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 148 selfloop transitions, 8 changer transitions 3/161 dead transitions. [2022-12-13 20:31:11,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 161 transitions, 1358 flow [2022-12-13 20:31:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:31:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:31:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2022-12-13 20:31:11,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47572815533980584 [2022-12-13 20:31:11,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2022-12-13 20:31:11,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2022-12-13 20:31:11,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:11,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2022-12-13 20:31:11,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:11,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:11,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:11,414 INFO L175 Difference]: Start difference. First operand has 109 places, 138 transitions, 921 flow. Second operand 3 states and 735 transitions. [2022-12-13 20:31:11,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 161 transitions, 1358 flow