./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/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_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/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_eec882f7-c36b-4191-8d72-6e948a60a3b0/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 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 --- 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 12:36:03,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:36:03,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:36:03,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:36:03,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:36:03,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:36:03,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:36:03,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:36:03,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:36:03,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:36:03,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:36:03,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:36:03,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:36:03,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:36:03,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:36:03,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:36:03,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:36:03,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:36:03,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:36:03,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:36:03,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:36:03,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:36:03,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:36:03,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:36:03,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:36:03,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:36:03,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:36:03,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:36:03,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:36:03,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:36:03,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:36:03,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:36:03,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:36:03,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:36:03,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:36:03,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:36:03,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:36:03,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:36:03,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:36:03,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:36:03,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:36:03,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:36:03,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:36:03,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:36:03,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:36:03,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:36:03,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:36:03,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:36:03,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:36:03,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:36:03,108 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:36:03,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:36:03,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:36:03,108 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:36:03,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:36:03,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:36:03,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:36:03,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:36:03,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:36:03,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:36:03,109 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:36:03,109 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:36:03,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:36:03,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:36:03,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:36:03,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:36:03,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:36:03,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:36:03,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:36:03,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:36:03,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:36:03,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:36:03,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:36:03,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:36:03,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:36:03,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:36:03,111 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:36:03,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:36:03,111 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:36:03,111 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_eec882f7-c36b-4191-8d72-6e948a60a3b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 [2022-12-13 12:36:03,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:36:03,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:36:03,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:36:03,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:36:03,292 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:36:03,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-12-13 12:36:05,968 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:36:06,116 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:36:06,117 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-12-13 12:36:06,121 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/data/b6c6a10f8/655ce28f3f9248368e1c51565cecea76/FLAGed86ef99b [2022-12-13 12:36:06,132 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/data/b6c6a10f8/655ce28f3f9248368e1c51565cecea76 [2022-12-13 12:36:06,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:36:06,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:36:06,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:36:06,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:36:06,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:36:06,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606977af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06, skipping insertion in model container [2022-12-13 12:36:06,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:36:06,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:36:06,303 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,303 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,304 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,311 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,311 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,312 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,312 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,312 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,314 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,314 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,320 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_eec882f7-c36b-4191-8d72-6e948a60a3b0/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-12-13 12:36:06,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:36:06,327 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:36:06,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,339 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,339 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:36:06,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:36:06,347 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_eec882f7-c36b-4191-8d72-6e948a60a3b0/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-12-13 12:36:06,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:36:06,358 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:36:06,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06 WrapperNode [2022-12-13 12:36:06,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:36:06,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:36:06,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:36:06,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:36:06,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,383 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-12-13 12:36:06,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:36:06,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:36:06,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:36:06,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:36:06,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,398 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:36:06,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:36:06,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:36:06,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:36:06,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (1/1) ... [2022-12-13 12:36:06,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:36:06,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:06,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:36:06,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:36:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:36:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:36:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:36:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:36:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:36:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 12:36:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 12:36:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:36:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:36:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:36:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:36:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:36:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:36:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:36:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:36:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:36:06,456 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 12:36:06,535 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:36:06,537 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:36:06,728 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:36:06,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:36:06,777 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:36:06,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:36:06 BoogieIcfgContainer [2022-12-13 12:36:06,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:36:06,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:36:06,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:36:06,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:36:06,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:36:06" (1/3) ... [2022-12-13 12:36:06,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148a023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:36:06, skipping insertion in model container [2022-12-13 12:36:06,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:36:06" (2/3) ... [2022-12-13 12:36:06,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148a023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:36:06, skipping insertion in model container [2022-12-13 12:36:06,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:36:06" (3/3) ... [2022-12-13 12:36:06,786 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-12-13 12:36:06,792 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:36:06,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:36:06,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 12:36:06,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:36:06,852 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 12:36:06,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2022-12-13 12:36:06,917 INFO L130 PetriNetUnfolder]: 7/109 cut-off events. [2022-12-13 12:36:06,917 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:36:06,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 116 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 12:36:06,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 248 flow [2022-12-13 12:36:06,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 93 transitions, 198 flow [2022-12-13 12:36:06,927 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:36:06,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 93 transitions, 198 flow [2022-12-13 12:36:06,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 93 transitions, 198 flow [2022-12-13 12:36:06,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 93 transitions, 198 flow [2022-12-13 12:36:06,957 INFO L130 PetriNetUnfolder]: 7/93 cut-off events. [2022-12-13 12:36:06,957 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:36:06,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 93 events. 7/93 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 112 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 12:36:06,959 INFO L119 LiptonReduction]: Number of co-enabled transitions 1604 [2022-12-13 12:36:09,384 INFO L134 LiptonReduction]: Checked pairs total: 1877 [2022-12-13 12:36:09,384 INFO L136 LiptonReduction]: Total number of compositions: 87 [2022-12-13 12:36:09,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:36:09,399 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;@73600290, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:36:09,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 12:36:09,407 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2022-12-13 12:36:09,407 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:36:09,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:09,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:36:09,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash 13483263, now seen corresponding path program 1 times [2022-12-13 12:36:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:09,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384653099] [2022-12-13 12:36:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:09,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:09,613 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 12:36:09,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:09,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384653099] [2022-12-13 12:36:09,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384653099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:36:09,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:36:09,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:36:09,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195182286] [2022-12-13 12:36:09,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:36:09,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:36:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:36:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:36:09,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2022-12-13 12:36:09,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 12:36:09,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:09,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2022-12-13 12:36:09,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:09,929 INFO L130 PetriNetUnfolder]: 1482/2048 cut-off events. [2022-12-13 12:36:09,930 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-12-13 12:36:09,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4309 conditions, 2048 events. 1482/2048 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9867 event pairs, 450 based on Foata normal form. 0/990 useless extension candidates. Maximal degree in co-relation 3866. Up to 1040 conditions per place. [2022-12-13 12:36:09,945 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2022-12-13 12:36:09,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 201 flow [2022-12-13 12:36:09,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:36:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:36:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-12-13 12:36:09,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5142378559463987 [2022-12-13 12:36:09,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-12-13 12:36:09,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-12-13 12:36:09,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:09,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-12-13 12:36:09,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 12:36:09,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:09,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:09,974 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 64 flow. Second operand 3 states and 307 transitions. [2022-12-13 12:36:09,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 201 flow [2022-12-13 12:36:09,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 46 transitions, 191 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:36:09,983 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 90 flow [2022-12-13 12:36:09,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2022-12-13 12:36:09,987 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2022-12-13 12:36:09,987 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 90 flow [2022-12-13 12:36:09,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 12:36:09,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:09,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:36:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:36:09,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash 13483266, now seen corresponding path program 1 times [2022-12-13 12:36:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:09,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317110112] [2022-12-13 12:36:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:10,066 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 12:36:10,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:10,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317110112] [2022-12-13 12:36:10,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317110112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:36:10,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:36:10,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:36:10,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517184648] [2022-12-13 12:36:10,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:36:10,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:36:10,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:10,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:36:10,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:36:10,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 199 [2022-12-13 12:36:10,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 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 12:36:10,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:10,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 199 [2022-12-13 12:36:10,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:10,261 INFO L130 PetriNetUnfolder]: 1451/2035 cut-off events. [2022-12-13 12:36:10,261 INFO L131 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2022-12-13 12:36:10,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 2035 events. 1451/2035 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9127 event pairs, 299 based on Foata normal form. 13/1181 useless extension candidates. Maximal degree in co-relation 4248. Up to 1961 conditions per place. [2022-12-13 12:36:10,271 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 36 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2022-12-13 12:36:10,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 197 flow [2022-12-13 12:36:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:36:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:36:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2022-12-13 12:36:10,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5125628140703518 [2022-12-13 12:36:10,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2022-12-13 12:36:10,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2022-12-13 12:36:10,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:10,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2022-12-13 12:36:10,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 12:36:10,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:10,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:10,278 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 90 flow. Second operand 3 states and 306 transitions. [2022-12-13 12:36:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 197 flow [2022-12-13 12:36:10,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:36:10,281 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 111 flow [2022-12-13 12:36:10,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2022-12-13 12:36:10,282 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2022-12-13 12:36:10,282 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 111 flow [2022-12-13 12:36:10,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 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 12:36:10,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:10,283 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:36:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:36:10,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash 72529791, now seen corresponding path program 1 times [2022-12-13 12:36:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092838586] [2022-12-13 12:36:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:10,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:10,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092838586] [2022-12-13 12:36:10,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092838586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:36:10,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:36:10,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:36:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278741297] [2022-12-13 12:36:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:36:10,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:36:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:36:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:36:10,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 199 [2022-12-13 12:36:10,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 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 12:36:10,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:10,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 199 [2022-12-13 12:36:10,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:10,511 INFO L130 PetriNetUnfolder]: 1103/1575 cut-off events. [2022-12-13 12:36:10,511 INFO L131 PetriNetUnfolder]: For 315/315 co-relation queries the response was YES. [2022-12-13 12:36:10,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 1575 events. 1103/1575 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7353 event pairs, 739 based on Foata normal form. 0/1158 useless extension candidates. Maximal degree in co-relation 2930. Up to 1571 conditions per place. [2022-12-13 12:36:10,517 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 25 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 12:36:10,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 149 flow [2022-12-13 12:36:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:36:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:36:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2022-12-13 12:36:10,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48743718592964824 [2022-12-13 12:36:10,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2022-12-13 12:36:10,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2022-12-13 12:36:10,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:10,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2022-12-13 12:36:10,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 12:36:10,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:10,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:10,523 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 111 flow. Second operand 3 states and 291 transitions. [2022-12-13 12:36:10,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 149 flow [2022-12-13 12:36:10,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:36:10,524 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 96 flow [2022-12-13 12:36:10,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2022-12-13 12:36:10,525 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2022-12-13 12:36:10,525 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 96 flow [2022-12-13 12:36:10,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 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 12:36:10,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:10,526 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:36:10,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:36:10,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash 72529790, now seen corresponding path program 1 times [2022-12-13 12:36:10,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:10,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024305087] [2022-12-13 12:36:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:10,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:10,637 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 12:36:10,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:10,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024305087] [2022-12-13 12:36:10,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024305087] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:10,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265030230] [2022-12-13 12:36:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:10,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:10,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:10,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:10,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:36:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:10,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 12:36:10,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:10,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:10,993 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 12:36:10,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265030230] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:10,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:10,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 8 [2022-12-13 12:36:10,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650173829] [2022-12-13 12:36:10,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:10,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:36:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:10,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:36:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:36:11,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 199 [2022-12-13 12:36:11,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 96 flow. Second operand has 10 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 12:36:11,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:11,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 199 [2022-12-13 12:36:11,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:12,260 INFO L130 PetriNetUnfolder]: 3522/5259 cut-off events. [2022-12-13 12:36:12,261 INFO L131 PetriNetUnfolder]: For 875/879 co-relation queries the response was YES. [2022-12-13 12:36:12,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13425 conditions, 5259 events. 3522/5259 cut-off events. For 875/879 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 28632 event pairs, 151 based on Foata normal form. 152/4293 useless extension candidates. Maximal degree in co-relation 13415. Up to 1811 conditions per place. [2022-12-13 12:36:12,280 INFO L137 encePairwiseOnDemand]: 186/199 looper letters, 171 selfloop transitions, 83 changer transitions 1/256 dead transitions. [2022-12-13 12:36:12,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 256 transitions, 1289 flow [2022-12-13 12:36:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:36:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 12:36:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1726 transitions. [2022-12-13 12:36:12,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4564929912721502 [2022-12-13 12:36:12,284 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1726 transitions. [2022-12-13 12:36:12,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1726 transitions. [2022-12-13 12:36:12,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:12,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1726 transitions. [2022-12-13 12:36:12,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 90.84210526315789) internal successors, (1726), 19 states have internal predecessors, (1726), 0 states have call successors, (0), 0 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 12:36:12,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 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 12:36:12,295 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 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 12:36:12,295 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 96 flow. Second operand 19 states and 1726 transitions. [2022-12-13 12:36:12,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 256 transitions, 1289 flow [2022-12-13 12:36:12,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 256 transitions, 1288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:36:12,300 INFO L231 Difference]: Finished difference. Result has 65 places, 115 transitions, 835 flow [2022-12-13 12:36:12,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=835, PETRI_PLACES=65, PETRI_TRANSITIONS=115} [2022-12-13 12:36:12,301 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2022-12-13 12:36:12,301 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 115 transitions, 835 flow [2022-12-13 12:36:12,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 12:36:12,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:12,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:12,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:36:12,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:12,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:12,504 INFO L85 PathProgramCache]: Analyzing trace with hash 127179118, now seen corresponding path program 1 times [2022-12-13 12:36:12,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:12,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274858760] [2022-12-13 12:36:12,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:12,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:12,648 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 12:36:12,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:12,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274858760] [2022-12-13 12:36:12,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274858760] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:12,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214444115] [2022-12-13 12:36:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:12,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:12,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:12,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:12,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:36:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:12,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 12:36:12,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:12,747 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 12:36:12,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:12,846 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 12:36:12,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214444115] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:12,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:12,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 12:36:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448796001] [2022-12-13 12:36:12,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:36:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:36:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:36:12,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 199 [2022-12-13 12:36:12,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 115 transitions, 835 flow. Second operand has 8 states, 8 states have (on average 85.625) internal successors, (685), 8 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 12:36:12,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:12,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 199 [2022-12-13 12:36:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:13,734 INFO L130 PetriNetUnfolder]: 5641/8491 cut-off events. [2022-12-13 12:36:13,734 INFO L131 PetriNetUnfolder]: For 28190/28276 co-relation queries the response was YES. [2022-12-13 12:36:13,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33687 conditions, 8491 events. 5641/8491 cut-off events. For 28190/28276 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 50303 event pairs, 331 based on Foata normal form. 570/8981 useless extension candidates. Maximal degree in co-relation 33662. Up to 2889 conditions per place. [2022-12-13 12:36:13,786 INFO L137 encePairwiseOnDemand]: 189/199 looper letters, 213 selfloop transitions, 114 changer transitions 0/330 dead transitions. [2022-12-13 12:36:13,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 330 transitions, 2932 flow [2022-12-13 12:36:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:36:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:36:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 783 transitions. [2022-12-13 12:36:13,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49183417085427134 [2022-12-13 12:36:13,788 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 783 transitions. [2022-12-13 12:36:13,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 783 transitions. [2022-12-13 12:36:13,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:13,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 783 transitions. [2022-12-13 12:36:13,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 97.875) internal successors, (783), 8 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 12:36:13,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 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 12:36:13,791 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 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 12:36:13,791 INFO L175 Difference]: Start difference. First operand has 65 places, 115 transitions, 835 flow. Second operand 8 states and 783 transitions. [2022-12-13 12:36:13,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 330 transitions, 2932 flow [2022-12-13 12:36:13,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 330 transitions, 2860 flow, removed 34 selfloop flow, removed 2 redundant places. [2022-12-13 12:36:13,953 INFO L231 Difference]: Finished difference. Result has 73 places, 201 transitions, 1996 flow [2022-12-13 12:36:13,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1996, PETRI_PLACES=73, PETRI_TRANSITIONS=201} [2022-12-13 12:36:13,953 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2022-12-13 12:36:13,953 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 201 transitions, 1996 flow [2022-12-13 12:36:13,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.625) internal successors, (685), 8 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 12:36:13,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:13,954 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:13,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:36:14,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:14,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1494564675, now seen corresponding path program 1 times [2022-12-13 12:36:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:14,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713569679] [2022-12-13 12:36:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:14,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:14,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713569679] [2022-12-13 12:36:14,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713569679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:36:14,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:36:14,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:36:14,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048890527] [2022-12-13 12:36:14,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:36:14,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:36:14,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:14,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:36:14,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:36:14,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 199 [2022-12-13 12:36:14,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 201 transitions, 1996 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 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 12:36:14,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:14,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 199 [2022-12-13 12:36:14,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:14,945 INFO L130 PetriNetUnfolder]: 4383/6662 cut-off events. [2022-12-13 12:36:14,946 INFO L131 PetriNetUnfolder]: For 37710/37770 co-relation queries the response was YES. [2022-12-13 12:36:14,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27994 conditions, 6662 events. 4383/6662 cut-off events. For 37710/37770 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 38866 event pairs, 2123 based on Foata normal form. 706/7352 useless extension candidates. Maximal degree in co-relation 27972. Up to 6650 conditions per place. [2022-12-13 12:36:14,971 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 149 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2022-12-13 12:36:14,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 153 transitions, 1668 flow [2022-12-13 12:36:14,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:36:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:36:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-12-13 12:36:14,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47906197654941374 [2022-12-13 12:36:14,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-12-13 12:36:14,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-12-13 12:36:14,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:14,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-12-13 12:36:14,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 12:36:14,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:14,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:14,974 INFO L175 Difference]: Start difference. First operand has 73 places, 201 transitions, 1996 flow. Second operand 3 states and 286 transitions. [2022-12-13 12:36:14,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 153 transitions, 1668 flow [2022-12-13 12:36:15,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 153 transitions, 1438 flow, removed 70 selfloop flow, removed 8 redundant places. [2022-12-13 12:36:15,144 INFO L231 Difference]: Finished difference. Result has 63 places, 153 transitions, 1140 flow [2022-12-13 12:36:15,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1140, PETRI_PLACES=63, PETRI_TRANSITIONS=153} [2022-12-13 12:36:15,145 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2022-12-13 12:36:15,145 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 153 transitions, 1140 flow [2022-12-13 12:36:15,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 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 12:36:15,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:15,145 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:15,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:36:15,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash -846493722, now seen corresponding path program 1 times [2022-12-13 12:36:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:15,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137248918] [2022-12-13 12:36:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:15,252 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 12:36:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:15,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137248918] [2022-12-13 12:36:15,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137248918] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:15,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073829014] [2022-12-13 12:36:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:15,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:15,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:15,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:15,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:36:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:15,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 12:36:15,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:15,379 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 12:36:15,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:15,624 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 12:36:15,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073829014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:15,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:15,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 11 [2022-12-13 12:36:15,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850077884] [2022-12-13 12:36:15,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:15,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:36:15,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:36:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:36:15,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2022-12-13 12:36:15,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 153 transitions, 1140 flow. Second operand has 13 states, 13 states have (on average 79.07692307692308) internal successors, (1028), 13 states have internal predecessors, (1028), 0 states have call successors, (0), 0 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 12:36:15,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:15,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2022-12-13 12:36:15,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:16,870 INFO L130 PetriNetUnfolder]: 6246/9625 cut-off events. [2022-12-13 12:36:16,871 INFO L131 PetriNetUnfolder]: For 19318/19326 co-relation queries the response was YES. [2022-12-13 12:36:16,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35707 conditions, 9625 events. 6246/9625 cut-off events. For 19318/19326 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 58452 event pairs, 311 based on Foata normal form. 686/10153 useless extension candidates. Maximal degree in co-relation 35691. Up to 3188 conditions per place. [2022-12-13 12:36:16,911 INFO L137 encePairwiseOnDemand]: 188/199 looper letters, 241 selfloop transitions, 233 changer transitions 1/476 dead transitions. [2022-12-13 12:36:16,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 476 transitions, 4042 flow [2022-12-13 12:36:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:36:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:36:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1359 transitions. [2022-12-13 12:36:16,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4552763819095477 [2022-12-13 12:36:16,914 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1359 transitions. [2022-12-13 12:36:16,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1359 transitions. [2022-12-13 12:36:16,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:16,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1359 transitions. [2022-12-13 12:36:16,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 90.6) internal successors, (1359), 15 states have internal predecessors, (1359), 0 states have call successors, (0), 0 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 12:36:16,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 199.0) internal successors, (3184), 16 states have internal predecessors, (3184), 0 states have call successors, (0), 0 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 12:36:16,921 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 199.0) internal successors, (3184), 16 states have internal predecessors, (3184), 0 states have call successors, (0), 0 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 12:36:16,921 INFO L175 Difference]: Start difference. First operand has 63 places, 153 transitions, 1140 flow. Second operand 15 states and 1359 transitions. [2022-12-13 12:36:16,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 476 transitions, 4042 flow [2022-12-13 12:36:17,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 476 transitions, 4027 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 12:36:17,031 INFO L231 Difference]: Finished difference. Result has 85 places, 317 transitions, 3515 flow [2022-12-13 12:36:17,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3515, PETRI_PLACES=85, PETRI_TRANSITIONS=317} [2022-12-13 12:36:17,032 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2022-12-13 12:36:17,032 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 317 transitions, 3515 flow [2022-12-13 12:36:17,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.07692307692308) internal successors, (1028), 13 states have internal predecessors, (1028), 0 states have call successors, (0), 0 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 12:36:17,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:17,033 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2022-12-13 12:36:17,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:36:17,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:17,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1512277322, now seen corresponding path program 1 times [2022-12-13 12:36:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:17,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071299331] [2022-12-13 12:36:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:36:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:17,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071299331] [2022-12-13 12:36:17,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071299331] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:17,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908599722] [2022-12-13 12:36:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:17,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:17,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:17,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:36:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:36:17,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:17,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:18,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908599722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:18,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:18,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 12:36:18,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394213039] [2022-12-13 12:36:18,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:18,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 12:36:18,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:18,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 12:36:18,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:36:18,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 199 [2022-12-13 12:36:18,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 317 transitions, 3515 flow. Second operand has 16 states, 16 states have (on average 77.875) internal successors, (1246), 16 states have internal predecessors, (1246), 0 states have call successors, (0), 0 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 12:36:18,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:18,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 199 [2022-12-13 12:36:18,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:25,327 INFO L130 PetriNetUnfolder]: 11572/18611 cut-off events. [2022-12-13 12:36:25,327 INFO L131 PetriNetUnfolder]: For 109136/109144 co-relation queries the response was YES. [2022-12-13 12:36:25,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90627 conditions, 18611 events. 11572/18611 cut-off events. For 109136/109144 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 131555 event pairs, 413 based on Foata normal form. 822/19427 useless extension candidates. Maximal degree in co-relation 90603. Up to 3413 conditions per place. [2022-12-13 12:36:25,415 INFO L137 encePairwiseOnDemand]: 188/199 looper letters, 519 selfloop transitions, 949 changer transitions 9/1478 dead transitions. [2022-12-13 12:36:25,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1478 transitions, 16918 flow [2022-12-13 12:36:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 12:36:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-12-13 12:36:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 5617 transitions. [2022-12-13 12:36:25,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4276686462616111 [2022-12-13 12:36:25,424 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 5617 transitions. [2022-12-13 12:36:25,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 5617 transitions. [2022-12-13 12:36:25,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:25,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 5617 transitions. [2022-12-13 12:36:25,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 85.10606060606061) internal successors, (5617), 66 states have internal predecessors, (5617), 0 states have call successors, (0), 0 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 12:36:25,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 199.0) internal successors, (13333), 67 states have internal predecessors, (13333), 0 states have call successors, (0), 0 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 12:36:25,445 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 199.0) internal successors, (13333), 67 states have internal predecessors, (13333), 0 states have call successors, (0), 0 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 12:36:25,445 INFO L175 Difference]: Start difference. First operand has 85 places, 317 transitions, 3515 flow. Second operand 66 states and 5617 transitions. [2022-12-13 12:36:25,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 1478 transitions, 16918 flow [2022-12-13 12:36:26,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 1478 transitions, 16553 flow, removed 157 selfloop flow, removed 4 redundant places. [2022-12-13 12:36:26,274 INFO L231 Difference]: Finished difference. Result has 175 places, 1082 transitions, 15342 flow [2022-12-13 12:36:26,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=3200, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=15342, PETRI_PLACES=175, PETRI_TRANSITIONS=1082} [2022-12-13 12:36:26,274 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 141 predicate places. [2022-12-13 12:36:26,275 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 1082 transitions, 15342 flow [2022-12-13 12:36:26,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 77.875) internal successors, (1246), 16 states have internal predecessors, (1246), 0 states have call successors, (0), 0 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 12:36:26,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:26,275 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:26,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:36:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:26,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1677613209, now seen corresponding path program 1 times [2022-12-13 12:36:26,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:26,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318427855] [2022-12-13 12:36:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:26,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:26,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318427855] [2022-12-13 12:36:26,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318427855] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:26,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750170904] [2022-12-13 12:36:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:26,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:26,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:26,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:26,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:36:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:36:26,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:26,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:27,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750170904] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:27,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:27,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 12:36:27,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348781318] [2022-12-13 12:36:27,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:27,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 12:36:27,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 12:36:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:36:27,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 199 [2022-12-13 12:36:27,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 1082 transitions, 15342 flow. Second operand has 16 states, 16 states have (on average 74.0625) internal successors, (1185), 16 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 12:36:27,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:27,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 199 [2022-12-13 12:36:27,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:36,329 INFO L130 PetriNetUnfolder]: 16003/27015 cut-off events. [2022-12-13 12:36:36,329 INFO L131 PetriNetUnfolder]: For 337777/337901 co-relation queries the response was YES. [2022-12-13 12:36:36,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154695 conditions, 27015 events. 16003/27015 cut-off events. For 337777/337901 co-relation queries the response was YES. Maximal size of possible extension queue 1525. Compared 221968 event pairs, 797 based on Foata normal form. 1492/28479 useless extension candidates. Maximal degree in co-relation 154641. Up to 5959 conditions per place. [2022-12-13 12:36:36,532 INFO L137 encePairwiseOnDemand]: 186/199 looper letters, 929 selfloop transitions, 1392 changer transitions 159/2485 dead transitions. [2022-12-13 12:36:36,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 2485 transitions, 37468 flow [2022-12-13 12:36:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 12:36:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 12:36:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2795 transitions. [2022-12-13 12:36:36,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4130948861956843 [2022-12-13 12:36:36,536 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2795 transitions. [2022-12-13 12:36:36,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2795 transitions. [2022-12-13 12:36:36,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:36,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2795 transitions. [2022-12-13 12:36:36,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 82.20588235294117) internal successors, (2795), 34 states have internal predecessors, (2795), 0 states have call successors, (0), 0 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 12:36:36,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 199.0) internal successors, (6965), 35 states have internal predecessors, (6965), 0 states have call successors, (0), 0 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 12:36:36,546 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 199.0) internal successors, (6965), 35 states have internal predecessors, (6965), 0 states have call successors, (0), 0 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 12:36:36,546 INFO L175 Difference]: Start difference. First operand has 175 places, 1082 transitions, 15342 flow. Second operand 34 states and 2795 transitions. [2022-12-13 12:36:36,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 2485 transitions, 37468 flow [2022-12-13 12:36:43,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 2485 transitions, 35292 flow, removed 1069 selfloop flow, removed 6 redundant places. [2022-12-13 12:36:43,394 INFO L231 Difference]: Finished difference. Result has 225 places, 1825 transitions, 29616 flow [2022-12-13 12:36:43,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=13336, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=672, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=29616, PETRI_PLACES=225, PETRI_TRANSITIONS=1825} [2022-12-13 12:36:43,395 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 191 predicate places. [2022-12-13 12:36:43,395 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 1825 transitions, 29616 flow [2022-12-13 12:36:43,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 74.0625) internal successors, (1185), 16 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 12:36:43,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:43,395 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:43,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:36:43,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 12:36:43,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:36:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:43,598 INFO L85 PathProgramCache]: Analyzing trace with hash -997655823, now seen corresponding path program 1 times [2022-12-13 12:36:43,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:43,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973659185] [2022-12-13 12:36:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:43,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:43,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:43,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973659185] [2022-12-13 12:36:43,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973659185] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:43,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642494162] [2022-12-13 12:36:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:43,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:43,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:43,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:43,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:36:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:43,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:36:43,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:36:43,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:36:44,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642494162] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:44,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:44,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 19 [2022-12-13 12:36:44,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253125395] [2022-12-13 12:36:44,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:44,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 12:36:44,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:44,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 12:36:44,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=248, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:36:44,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2022-12-13 12:36:44,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 1825 transitions, 29616 flow. Second operand has 21 states, 21 states have (on average 80.71428571428571) internal successors, (1695), 21 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:44,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:44,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2022-12-13 12:36:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:55,168 INFO L130 PetriNetUnfolder]: 17131/28442 cut-off events. [2022-12-13 12:36:55,168 INFO L131 PetriNetUnfolder]: For 370255/370457 co-relation queries the response was YES. [2022-12-13 12:36:55,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187395 conditions, 28442 events. 17131/28442 cut-off events. For 370255/370457 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 227395 event pairs, 2493 based on Foata normal form. 220/28620 useless extension candidates. Maximal degree in co-relation 187319. Up to 21842 conditions per place. [2022-12-13 12:36:55,440 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 1518 selfloop transitions, 580 changer transitions 49/2157 dead transitions. [2022-12-13 12:36:55,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 2157 transitions, 38096 flow [2022-12-13 12:36:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 12:36:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 12:36:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2111 transitions. [2022-12-13 12:36:55,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44200167504187604 [2022-12-13 12:36:55,442 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2111 transitions. [2022-12-13 12:36:55,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2111 transitions. [2022-12-13 12:36:55,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:55,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2111 transitions. [2022-12-13 12:36:55,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 87.95833333333333) internal successors, (2111), 24 states have internal predecessors, (2111), 0 states have call successors, (0), 0 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 12:36:55,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 199.0) internal successors, (4975), 25 states have internal predecessors, (4975), 0 states have call successors, (0), 0 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 12:36:55,448 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 199.0) internal successors, (4975), 25 states have internal predecessors, (4975), 0 states have call successors, (0), 0 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 12:36:55,449 INFO L175 Difference]: Start difference. First operand has 225 places, 1825 transitions, 29616 flow. Second operand 24 states and 2111 transitions. [2022-12-13 12:36:55,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 2157 transitions, 38096 flow [2022-12-13 12:37:06,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 2157 transitions, 36386 flow, removed 842 selfloop flow, removed 4 redundant places. [2022-12-13 12:37:06,622 INFO L231 Difference]: Finished difference. Result has 253 places, 1948 transitions, 31932 flow [2022-12-13 12:37:06,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=28107, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=31932, PETRI_PLACES=253, PETRI_TRANSITIONS=1948} [2022-12-13 12:37:06,623 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 219 predicate places. [2022-12-13 12:37:06,623 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 1948 transitions, 31932 flow [2022-12-13 12:37:06,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 80.71428571428571) internal successors, (1695), 21 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:06,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:37:06,624 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:06,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:37:06,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 12:37:06,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:37:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1225257311, now seen corresponding path program 1 times [2022-12-13 12:37:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:06,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858018864] [2022-12-13 12:37:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:37:06,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:06,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858018864] [2022-12-13 12:37:06,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858018864] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:37:06,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814534584] [2022-12-13 12:37:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:06,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:37:06,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:37:06,967 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:37:06,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:37:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:07,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 12:37:07,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:37:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:37:07,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:37:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:37:07,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814534584] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:37:07,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:37:07,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 19 [2022-12-13 12:37:07,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309072128] [2022-12-13 12:37:07,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:37:07,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:37:07,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:07,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:37:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:37:07,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 199 [2022-12-13 12:37:07,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 1948 transitions, 31932 flow. Second operand has 20 states, 20 states have (on average 73.95) internal successors, (1479), 20 states have internal predecessors, (1479), 0 states have call successors, (0), 0 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 12:37:07,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:37:07,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 199 [2022-12-13 12:37:07,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:37:43,283 INFO L130 PetriNetUnfolder]: 42590/70200 cut-off events. [2022-12-13 12:37:43,283 INFO L131 PetriNetUnfolder]: For 1038182/1038212 co-relation queries the response was YES. [2022-12-13 12:37:44,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448795 conditions, 70200 events. 42590/70200 cut-off events. For 1038182/1038212 co-relation queries the response was YES. Maximal size of possible extension queue 4096. Compared 634467 event pairs, 559 based on Foata normal form. 4731/74920 useless extension candidates. Maximal degree in co-relation 448712. Up to 13529 conditions per place. [2022-12-13 12:37:44,216 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 1343 selfloop transitions, 4912 changer transitions 1182/7443 dead transitions. [2022-12-13 12:37:44,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 7443 transitions, 129080 flow [2022-12-13 12:37:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-12-13 12:37:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2022-12-13 12:37:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 7560 transitions. [2022-12-13 12:37:44,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41293423639938825 [2022-12-13 12:37:44,224 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 7560 transitions. [2022-12-13 12:37:44,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 7560 transitions. [2022-12-13 12:37:44,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:37:44,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 7560 transitions. [2022-12-13 12:37:44,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 82.17391304347827) internal successors, (7560), 92 states have internal predecessors, (7560), 0 states have call successors, (0), 0 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 12:37:44,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 199.0) internal successors, (18507), 93 states have internal predecessors, (18507), 0 states have call successors, (0), 0 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 12:37:44,244 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 199.0) internal successors, (18507), 93 states have internal predecessors, (18507), 0 states have call successors, (0), 0 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 12:37:44,245 INFO L175 Difference]: Start difference. First operand has 253 places, 1948 transitions, 31932 flow. Second operand 92 states and 7560 transitions. [2022-12-13 12:37:44,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 7443 transitions, 129080 flow [2022-12-13 12:38:27,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 7443 transitions, 126059 flow, removed 646 selfloop flow, removed 6 redundant places. [2022-12-13 12:38:27,778 INFO L231 Difference]: Finished difference. Result has 372 places, 5522 transitions, 104757 flow [2022-12-13 12:38:27,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=29188, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1850, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=104757, PETRI_PLACES=372, PETRI_TRANSITIONS=5522} [2022-12-13 12:38:27,779 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 338 predicate places. [2022-12-13 12:38:27,779 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 5522 transitions, 104757 flow [2022-12-13 12:38:27,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 73.95) internal successors, (1479), 20 states have internal predecessors, (1479), 0 states have call successors, (0), 0 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 12:38:27,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:38:27,780 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:38:27,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:38:27,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 12:38:27,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:38:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:38:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2105327809, now seen corresponding path program 1 times [2022-12-13 12:38:27,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:38:27,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435449029] [2022-12-13 12:38:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:38:27,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:38:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:38:28,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:38:28,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435449029] [2022-12-13 12:38:28,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435449029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:38:28,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573630077] [2022-12-13 12:38:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:38:28,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:38:28,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:38:28,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:38:28,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:38:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:28,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:38:28,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:38:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:38:28,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:38:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:38:28,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573630077] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:38:28,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:38:28,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 23 [2022-12-13 12:38:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333704362] [2022-12-13 12:38:28,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:38:28,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:38:28,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:38:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:38:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:38:29,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 199 [2022-12-13 12:38:29,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 5522 transitions, 104757 flow. Second operand has 24 states, 24 states have (on average 72.45833333333333) internal successors, (1739), 24 states have internal predecessors, (1739), 0 states have call successors, (0), 0 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 12:38:29,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:38:29,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 199 [2022-12-13 12:38:29,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:39:39,339 INFO L130 PetriNetUnfolder]: 42499/70807 cut-off events. [2022-12-13 12:39:39,339 INFO L131 PetriNetUnfolder]: For 964913/964979 co-relation queries the response was YES. [2022-12-13 12:39:40,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533162 conditions, 70807 events. 42499/70807 cut-off events. For 964913/964979 co-relation queries the response was YES. Maximal size of possible extension queue 3981. Compared 644145 event pairs, 4701 based on Foata normal form. 912/71698 useless extension candidates. Maximal degree in co-relation 533048. Up to 22055 conditions per place. [2022-12-13 12:39:40,612 INFO L137 encePairwiseOnDemand]: 188/199 looper letters, 3352 selfloop transitions, 4900 changer transitions 95/8355 dead transitions. [2022-12-13 12:39:40,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 8355 transitions, 173273 flow [2022-12-13 12:39:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 12:39:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 12:39:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2258 transitions. [2022-12-13 12:39:40,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40524048815506103 [2022-12-13 12:39:40,615 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2258 transitions. [2022-12-13 12:39:40,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2258 transitions. [2022-12-13 12:39:40,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:39:40,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2258 transitions. [2022-12-13 12:39:40,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 80.64285714285714) internal successors, (2258), 28 states have internal predecessors, (2258), 0 states have call successors, (0), 0 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 12:39:40,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 199.0) internal successors, (5771), 29 states have internal predecessors, (5771), 0 states have call successors, (0), 0 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 12:39:40,622 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 199.0) internal successors, (5771), 29 states have internal predecessors, (5771), 0 states have call successors, (0), 0 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 12:39:40,622 INFO L175 Difference]: Start difference. First operand has 372 places, 5522 transitions, 104757 flow. Second operand 28 states and 2258 transitions. [2022-12-13 12:39:40,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 8355 transitions, 173273 flow [2022-12-13 12:41:31,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 8355 transitions, 161805 flow, removed 5127 selfloop flow, removed 15 redundant places. [2022-12-13 12:41:31,221 INFO L231 Difference]: Finished difference. Result has 393 places, 7381 transitions, 152027 flow [2022-12-13 12:41:31,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=97109, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1761, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=152027, PETRI_PLACES=393, PETRI_TRANSITIONS=7381} [2022-12-13 12:41:31,225 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 359 predicate places. [2022-12-13 12:41:31,225 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 7381 transitions, 152027 flow [2022-12-13 12:41:31,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 72.45833333333333) internal successors, (1739), 24 states have internal predecessors, (1739), 0 states have call successors, (0), 0 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 12:41:31,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:31,226 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:41:31,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 12:41:31,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:41:31,427 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 12:41:31,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash -914654524, now seen corresponding path program 2 times [2022-12-13 12:41:31,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:31,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842099222] [2022-12-13 12:41:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:31,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:31,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:31,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842099222] [2022-12-13 12:41:31,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842099222] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:41:31,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542968189] [2022-12-13 12:41:31,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:41:31,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:41:31,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:41:31,691 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:41:31,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec882f7-c36b-4191-8d72-6e948a60a3b0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:41:31,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:41:31,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:41:31,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 12:41:31,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:41:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:32,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:41:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:32,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542968189] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:41:32,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:41:32,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2022-12-13 12:41:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479098554] [2022-12-13 12:41:32,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:41:32,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 12:41:32,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:32,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 12:41:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-12-13 12:41:33,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 199 [2022-12-13 12:41:33,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 7381 transitions, 152027 flow. Second operand has 25 states, 25 states have (on average 72.56) internal successors, (1814), 25 states have internal predecessors, (1814), 0 states have call successors, (0), 0 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 12:41:33,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:33,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 199 [2022-12-13 12:41:33,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:47:52,377 INFO L130 PetriNetUnfolder]: 145425/242501 cut-off events. [2022-12-13 12:47:52,378 INFO L131 PetriNetUnfolder]: For 3393566/3393658 co-relation queries the response was YES. [2022-12-13 12:47:55,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863842 conditions, 242501 events. 145425/242501 cut-off events. For 3393566/3393658 co-relation queries the response was YES. Maximal size of possible extension queue 12163. Compared 2525632 event pairs, 2858 based on Foata normal form. 7662/250140 useless extension candidates. Maximal degree in co-relation 1863724. Up to 46579 conditions per place. [2022-12-13 12:47:56,853 INFO L137 encePairwiseOnDemand]: 186/199 looper letters, 8340 selfloop transitions, 21461 changer transitions 1497/31306 dead transitions. [2022-12-13 12:47:56,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 786 places, 31306 transitions, 652449 flow [2022-12-13 12:47:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 394 states. [2022-12-13 12:47:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2022-12-13 12:47:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 31443 transitions. [2022-12-13 12:47:56,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40102798255235567 [2022-12-13 12:47:56,900 INFO L72 ComplementDD]: Start complementDD. Operand 394 states and 31443 transitions. [2022-12-13 12:47:56,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 394 states and 31443 transitions. [2022-12-13 12:47:56,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:47:56,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 394 states and 31443 transitions. [2022-12-13 12:47:56,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 395 states, 394 states have (on average 79.80456852791878) internal successors, (31443), 394 states have internal predecessors, (31443), 0 states have call successors, (0), 0 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 12:47:57,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 395 states, 395 states have (on average 199.0) internal successors, (78605), 395 states have internal predecessors, (78605), 0 states have call successors, (0), 0 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 12:47:57,041 INFO L81 ComplementDD]: Finished complementDD. Result has 395 states, 395 states have (on average 199.0) internal successors, (78605), 395 states have internal predecessors, (78605), 0 states have call successors, (0), 0 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 12:47:57,041 INFO L175 Difference]: Start difference. First operand has 393 places, 7381 transitions, 152027 flow. Second operand 394 states and 31443 transitions. [2022-12-13 12:47:57,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 786 places, 31306 transitions, 652449 flow