./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.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_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/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_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/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_3a567625-4842-4da4-a1f9-75de2ce19c07/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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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 12:56:16,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:56:16,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:56:16,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:56:16,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:56:16,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:56:16,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:56:16,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:56:16,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:56:16,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:56:16,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:56:16,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:56:16,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:56:16,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:56:16,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:56:16,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:56:16,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:56:16,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:56:16,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:56:16,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:56:16,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:56:16,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:56:16,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:56:16,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:56:16,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:56:16,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:56:16,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:56:16,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:56:16,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:56:16,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:56:16,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:56:16,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:56:16,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:56:16,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:56:16,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:56:16,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:56:16,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:56:16,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:56:16,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:56:16,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:56:16,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:56:16,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:56:16,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:56:16,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:56:16,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:56:16,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:56:16,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:56:16,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:56:16,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:56:16,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:56:16,197 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:56:16,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:56:16,197 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:56:16,197 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:56:16,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:56:16,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:56:16,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:56:16,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:56:16,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:56:16,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:56:16,198 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:56:16,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:56:16,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:56:16,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:56:16,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:56:16,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:56:16,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:56:16,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:56:16,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:56:16,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:56:16,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:56:16,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:56:16,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:56:16,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:56:16,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:56:16,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:56:16,200 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:56:16,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:56:16,200 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:56:16,200 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_3a567625-4842-4da4-a1f9-75de2ce19c07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-12-13 12:56:16,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:56:16,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:56:16,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:56:16,378 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:56:16,378 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:56:16,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-12-13 12:56:18,989 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:56:19,137 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:56:19,138 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-12-13 12:56:19,144 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/data/918784479/ae256bb1ba6f44d0b972e638ab0535b3/FLAG71527687d [2022-12-13 12:56:19,155 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/data/918784479/ae256bb1ba6f44d0b972e638ab0535b3 [2022-12-13 12:56:19,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:56:19,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:56:19,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:56:19,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:56:19,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:56:19,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463c9f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19, skipping insertion in model container [2022-12-13 12:56:19,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:56:19,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:56:19,314 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,357 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_3a567625-4842-4da4-a1f9-75de2ce19c07/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-12-13 12:56:19,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:56:19,369 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:56:19,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:56:19,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:56:19,406 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_3a567625-4842-4da4-a1f9-75de2ce19c07/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-12-13 12:56:19,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:56:19,424 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:56:19,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19 WrapperNode [2022-12-13 12:56:19,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:56:19,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:56:19,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:56:19,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:56:19,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,467 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 492 [2022-12-13 12:56:19,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:56:19,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:56:19,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:56:19,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:56:19,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:56:19,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:56:19,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:56:19,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:56:19,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (1/1) ... [2022-12-13 12:56:19,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:56:19,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:56:19,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:56:19,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:56:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:56:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:56:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:56:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:56:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:56:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:56:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:56:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:56:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 12:56:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 12:56:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 12:56:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 12:56:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:56:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:56:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:56:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:56:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:56:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:56:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:56:19,575 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 12:56:19,674 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:56:19,676 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:56:20,162 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:56:20,375 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:56:20,375 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 12:56:20,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:56:20 BoogieIcfgContainer [2022-12-13 12:56:20,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:56:20,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:56:20,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:56:20,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:56:20,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:56:19" (1/3) ... [2022-12-13 12:56:20,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac2f907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:56:20, skipping insertion in model container [2022-12-13 12:56:20,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:56:19" (2/3) ... [2022-12-13 12:56:20,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac2f907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:56:20, skipping insertion in model container [2022-12-13 12:56:20,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:56:20" (3/3) ... [2022-12-13 12:56:20,384 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-12-13 12:56:20,391 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:56:20,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:56:20,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 12:56:20,400 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:56:20,484 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 12:56:20,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 395 transitions, 822 flow [2022-12-13 12:56:20,624 INFO L130 PetriNetUnfolder]: 37/391 cut-off events. [2022-12-13 12:56:20,624 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:56:20,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 391 events. 37/391 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 406 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2022-12-13 12:56:20,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 395 transitions, 822 flow [2022-12-13 12:56:20,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 368 transitions, 757 flow [2022-12-13 12:56:20,643 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:56:20,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 368 transitions, 757 flow [2022-12-13 12:56:20,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 368 transitions, 757 flow [2022-12-13 12:56:20,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 368 transitions, 757 flow [2022-12-13 12:56:20,712 INFO L130 PetriNetUnfolder]: 36/368 cut-off events. [2022-12-13 12:56:20,712 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:56:20,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 368 events. 36/368 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 403 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2022-12-13 12:56:20,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 8592 [2022-12-13 12:56:34,222 INFO L134 LiptonReduction]: Checked pairs total: 10953 [2022-12-13 12:56:34,222 INFO L136 LiptonReduction]: Total number of compositions: 441 [2022-12-13 12:56:34,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:56:34,237 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;@551e251e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:56:34,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-12-13 12:56:34,239 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:56:34,239 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:56:34,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:34,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:56:34,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:56:34,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash 66204, now seen corresponding path program 1 times [2022-12-13 12:56:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:34,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151903843] [2022-12-13 12:56:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:34,448 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 12:56:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:34,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151903843] [2022-12-13 12:56:34,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151903843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:34,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:34,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:56:34,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877915442] [2022-12-13 12:56:34,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:34,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:56:34,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:34,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:56:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:56:34,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 836 [2022-12-13 12:56:34,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 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 12:56:34,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:34,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 836 [2022-12-13 12:56:34,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:36,582 INFO L130 PetriNetUnfolder]: 9913/12987 cut-off events. [2022-12-13 12:56:36,582 INFO L131 PetriNetUnfolder]: For 422/422 co-relation queries the response was YES. [2022-12-13 12:56:36,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26824 conditions, 12987 events. 9913/12987 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 58420 event pairs, 7514 based on Foata normal form. 0/4435 useless extension candidates. Maximal degree in co-relation 12048. Up to 6499 conditions per place. [2022-12-13 12:56:36,633 INFO L137 encePairwiseOnDemand]: 808/836 looper letters, 85 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2022-12-13 12:56:36,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 414 flow [2022-12-13 12:56:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:56:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:56:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2022-12-13 12:56:36,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43381180223285487 [2022-12-13 12:56:36,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2022-12-13 12:56:36,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2022-12-13 12:56:36,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:36,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2022-12-13 12:56:36,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 0 states have call successors, (0), 0 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 12:56:36,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:56:36,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:56:36,663 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 147 flow. Second operand 3 states and 1088 transitions. [2022-12-13 12:56:36,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 414 flow [2022-12-13 12:56:36,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 388 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 12:56:36,694 INFO L231 Difference]: Finished difference. Result has 53 places, 58 transitions, 186 flow [2022-12-13 12:56:36,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=58} [2022-12-13 12:56:36,699 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2022-12-13 12:56:36,699 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 58 transitions, 186 flow [2022-12-13 12:56:36,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 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 12:56:36,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:36,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:56:36,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:56:36,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:56:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2056218, now seen corresponding path program 1 times [2022-12-13 12:56:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:36,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491914211] [2022-12-13 12:56:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:36,780 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 12:56:36,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:36,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491914211] [2022-12-13 12:56:36,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491914211] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:56:36,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163386356] [2022-12-13 12:56:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:36,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:56:36,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:56:36,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:56:36,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:56:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:36,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:56:36,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:56:36,891 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 12:56:36,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:56:36,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163386356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:36,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:56:36,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 12:56:36,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193120005] [2022-12-13 12:56:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:36,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:56:36,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:56:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:56:36,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 836 [2022-12-13 12:56:36,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 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 12:56:36,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:36,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 836 [2022-12-13 12:56:36,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:38,915 INFO L130 PetriNetUnfolder]: 9913/12983 cut-off events. [2022-12-13 12:56:38,915 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 12:56:38,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26591 conditions, 12983 events. 9913/12983 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 58326 event pairs, 7514 based on Foata normal form. 0/4443 useless extension candidates. Maximal degree in co-relation 13270. Up to 6494 conditions per place. [2022-12-13 12:56:38,962 INFO L137 encePairwiseOnDemand]: 824/836 looper letters, 81 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2022-12-13 12:56:38,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 89 transitions, 426 flow [2022-12-13 12:56:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:56:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:56:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1377 transitions. [2022-12-13 12:56:38,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4117822966507177 [2022-12-13 12:56:38,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1377 transitions. [2022-12-13 12:56:38,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1377 transitions. [2022-12-13 12:56:38,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:38,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1377 transitions. [2022-12-13 12:56:38,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 344.25) internal successors, (1377), 4 states have internal predecessors, (1377), 0 states have call successors, (0), 0 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 12:56:38,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:56:38,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:56:38,974 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 186 flow. Second operand 4 states and 1377 transitions. [2022-12-13 12:56:38,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 89 transitions, 426 flow [2022-12-13 12:56:38,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 89 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:56:38,976 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 170 flow [2022-12-13 12:56:38,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2022-12-13 12:56:38,977 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -18 predicate places. [2022-12-13 12:56:38,977 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 170 flow [2022-12-13 12:56:38,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 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 12:56:38,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:38,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:56:38,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:56:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:56:39,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:56:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2056280, now seen corresponding path program 1 times [2022-12-13 12:56:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:39,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538885522] [2022-12-13 12:56:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:39,271 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 12:56:39,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:39,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538885522] [2022-12-13 12:56:39,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538885522] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:56:39,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347362693] [2022-12-13 12:56:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:39,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:56:39,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:56:39,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:56:39,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:56:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:39,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:56:39,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:56:39,358 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 12:56:39,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:56:39,373 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 12:56:39,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347362693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:56:39,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:56:39,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 12:56:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753418481] [2022-12-13 12:56:39,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:56:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:56:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:56:39,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:56:39,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 836 [2022-12-13 12:56:39,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 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 12:56:39,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:39,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 836 [2022-12-13 12:56:39,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:44,019 INFO L130 PetriNetUnfolder]: 24781/32450 cut-off events. [2022-12-13 12:56:44,020 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-12-13 12:56:44,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66446 conditions, 32450 events. 24781/32450 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1439. Compared 160724 event pairs, 18785 based on Foata normal form. 0/11106 useless extension candidates. Maximal degree in co-relation 53059. Up to 6498 conditions per place. [2022-12-13 12:56:44,120 INFO L137 encePairwiseOnDemand]: 824/836 looper letters, 186 selfloop transitions, 29 changer transitions 0/215 dead transitions. [2022-12-13 12:56:44,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 215 transitions, 1014 flow [2022-12-13 12:56:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:56:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:56:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2153 transitions. [2022-12-13 12:56:44,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42922647527910684 [2022-12-13 12:56:44,124 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2153 transitions. [2022-12-13 12:56:44,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2153 transitions. [2022-12-13 12:56:44,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:44,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2153 transitions. [2022-12-13 12:56:44,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 358.8333333333333) internal successors, (2153), 6 states have internal predecessors, (2153), 0 states have call successors, (0), 0 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 12:56:44,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 836.0) internal successors, (5852), 7 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 12:56:44,134 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 836.0) internal successors, (5852), 7 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 12:56:44,134 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 170 flow. Second operand 6 states and 2153 transitions. [2022-12-13 12:56:44,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 215 transitions, 1014 flow [2022-12-13 12:56:44,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 215 transitions, 996 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:56:44,136 INFO L231 Difference]: Finished difference. Result has 56 places, 75 transitions, 377 flow [2022-12-13 12:56:44,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=56, PETRI_TRANSITIONS=75} [2022-12-13 12:56:44,137 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -12 predicate places. [2022-12-13 12:56:44,137 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 377 flow [2022-12-13 12:56:44,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 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 12:56:44,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:44,138 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 12:56:44,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:56:44,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:56:44,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:56:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1131115098, now seen corresponding path program 2 times [2022-12-13 12:56:44,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:44,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259070082] [2022-12-13 12:56:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:44,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:56:44,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:44,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259070082] [2022-12-13 12:56:44,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259070082] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:56:44,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237244004] [2022-12-13 12:56:44,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:56:44,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:56:44,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:56:44,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:56:44,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:56:44,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:56:44,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:56:44,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:56:44,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:56:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 12:56:44,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:56:44,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237244004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:44,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:56:44,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 12:56:44,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083703470] [2022-12-13 12:56:44,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:44,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:56:44,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:44,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:56:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:56:44,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 836 [2022-12-13 12:56:44,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 75 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 12:56:44,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:44,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 836 [2022-12-13 12:56:44,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:49,214 INFO L130 PetriNetUnfolder]: 24781/32446 cut-off events. [2022-12-13 12:56:49,214 INFO L131 PetriNetUnfolder]: For 247/247 co-relation queries the response was YES. [2022-12-13 12:56:49,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66478 conditions, 32446 events. 24781/32446 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 162641 event pairs, 18785 based on Foata normal form. 4/11110 useless extension candidates. Maximal degree in co-relation 53063. Up to 32446 conditions per place. [2022-12-13 12:56:49,342 INFO L137 encePairwiseOnDemand]: 831/836 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2022-12-13 12:56:49,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 479 flow [2022-12-13 12:56:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:56:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:56:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2022-12-13 12:56:49,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40749601275917063 [2022-12-13 12:56:49,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2022-12-13 12:56:49,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2022-12-13 12:56:49,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:49,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2022-12-13 12:56:49,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 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 12:56:49,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:56:49,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:56:49,352 INFO L175 Difference]: Start difference. First operand has 56 places, 75 transitions, 377 flow. Second operand 3 states and 1022 transitions. [2022-12-13 12:56:49,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 479 flow [2022-12-13 12:56:49,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 71 transitions, 380 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-12-13 12:56:49,355 INFO L231 Difference]: Finished difference. Result has 49 places, 71 transitions, 240 flow [2022-12-13 12:56:49,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=49, PETRI_TRANSITIONS=71} [2022-12-13 12:56:49,356 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2022-12-13 12:56:49,356 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 71 transitions, 240 flow [2022-12-13 12:56:49,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 12:56:49,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:49,358 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:49,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:56:49,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:56:49,559 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:56:49,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1768903530, now seen corresponding path program 1 times [2022-12-13 12:56:49,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:49,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642191258] [2022-12-13 12:56:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:49,625 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 12:56:49,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:49,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642191258] [2022-12-13 12:56:49,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642191258] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:49,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:49,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:56:49,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709789805] [2022-12-13 12:56:49,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:49,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:56:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:49,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:56:49,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:56:49,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 836 [2022-12-13 12:56:49,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 71 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 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 12:56:49,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:49,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 836 [2022-12-13 12:56:49,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:56:56,080 INFO L130 PetriNetUnfolder]: 33531/43736 cut-off events. [2022-12-13 12:56:56,080 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-12-13 12:56:56,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89372 conditions, 43736 events. 33531/43736 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1911. Compared 238321 event pairs, 7585 based on Foata normal form. 0/15563 useless extension candidates. Maximal degree in co-relation 89364. Up to 29591 conditions per place. [2022-12-13 12:56:56,217 INFO L137 encePairwiseOnDemand]: 828/836 looper letters, 96 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2022-12-13 12:56:56,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 99 transitions, 501 flow [2022-12-13 12:56:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:56:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:56:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2022-12-13 12:56:56,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4190590111642743 [2022-12-13 12:56:56,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2022-12-13 12:56:56,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2022-12-13 12:56:56,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:56:56,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2022-12-13 12:56:56,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 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 12:56:56,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:56:56,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:56:56,226 INFO L175 Difference]: Start difference. First operand has 49 places, 71 transitions, 240 flow. Second operand 3 states and 1051 transitions. [2022-12-13 12:56:56,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 99 transitions, 501 flow [2022-12-13 12:56:56,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 99 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:56:56,229 INFO L231 Difference]: Finished difference. Result has 52 places, 73 transitions, 269 flow [2022-12-13 12:56:56,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=52, PETRI_TRANSITIONS=73} [2022-12-13 12:56:56,230 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -16 predicate places. [2022-12-13 12:56:56,230 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 73 transitions, 269 flow [2022-12-13 12:56:56,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 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 12:56:56,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:56:56,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:56:56,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:56:56,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:56:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash -998563076, now seen corresponding path program 1 times [2022-12-13 12:56:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:56,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762984203] [2022-12-13 12:56:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:56,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:56,652 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 12:56:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:56,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762984203] [2022-12-13 12:56:56,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762984203] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:56:56,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138251382] [2022-12-13 12:56:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:56,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:56:56,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:56:56,654 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:56:56,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:56:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:56,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:56:56,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:56:56,790 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 12:56:56,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:56:56,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138251382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:56,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:56:56,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 12:56:56,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161866966] [2022-12-13 12:56:56,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:56,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:56:56,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:56,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:56:56,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:56:56,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 836 [2022-12-13 12:56:56,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 73 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 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 12:56:56,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:56:56,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 836 [2022-12-13 12:56:56,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:03,612 INFO L130 PetriNetUnfolder]: 40471/53116 cut-off events. [2022-12-13 12:57:03,612 INFO L131 PetriNetUnfolder]: For 10065/10065 co-relation queries the response was YES. [2022-12-13 12:57:03,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117695 conditions, 53116 events. 40471/53116 cut-off events. For 10065/10065 co-relation queries the response was YES. Maximal size of possible extension queue 2250. Compared 300628 event pairs, 10865 based on Foata normal form. 1700/24963 useless extension candidates. Maximal degree in co-relation 117684. Up to 45191 conditions per place. [2022-12-13 12:57:03,804 INFO L137 encePairwiseOnDemand]: 830/836 looper letters, 93 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2022-12-13 12:57:03,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 97 transitions, 517 flow [2022-12-13 12:57:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2022-12-13 12:57:03,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4150717703349282 [2022-12-13 12:57:03,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2022-12-13 12:57:03,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2022-12-13 12:57:03,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:03,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2022-12-13 12:57:03,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 12:57:03,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:03,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:03,812 INFO L175 Difference]: Start difference. First operand has 52 places, 73 transitions, 269 flow. Second operand 3 states and 1041 transitions. [2022-12-13 12:57:03,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 97 transitions, 517 flow [2022-12-13 12:57:03,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 97 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:57:03,916 INFO L231 Difference]: Finished difference. Result has 53 places, 76 transitions, 291 flow [2022-12-13 12:57:03,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=53, PETRI_TRANSITIONS=76} [2022-12-13 12:57:03,917 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2022-12-13 12:57:03,917 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 76 transitions, 291 flow [2022-12-13 12:57:03,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 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 12:57:03,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:03,917 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:03,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:57:04,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 12:57:04,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:57:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash -890821752, now seen corresponding path program 1 times [2022-12-13 12:57:04,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:04,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634285584] [2022-12-13 12:57:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:04,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:04,181 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 12:57:04,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:04,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634285584] [2022-12-13 12:57:04,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634285584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:04,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:04,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:57:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629316062] [2022-12-13 12:57:04,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:04,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:04,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:04,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:04,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 836 [2022-12-13 12:57:04,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 76 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 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 12:57:04,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:04,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 836 [2022-12-13 12:57:04,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:14,656 INFO L130 PetriNetUnfolder]: 57761/74866 cut-off events. [2022-12-13 12:57:14,656 INFO L131 PetriNetUnfolder]: For 15950/15950 co-relation queries the response was YES. [2022-12-13 12:57:14,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180666 conditions, 74866 events. 57761/74866 cut-off events. For 15950/15950 co-relation queries the response was YES. Maximal size of possible extension queue 3085. Compared 416419 event pairs, 25855 based on Foata normal form. 0/43263 useless extension candidates. Maximal degree in co-relation 180654. Up to 39076 conditions per place. [2022-12-13 12:57:14,939 INFO L137 encePairwiseOnDemand]: 832/836 looper letters, 104 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2022-12-13 12:57:14,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 108 transitions, 605 flow [2022-12-13 12:57:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1061 transitions. [2022-12-13 12:57:14,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4230462519936204 [2022-12-13 12:57:14,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1061 transitions. [2022-12-13 12:57:14,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1061 transitions. [2022-12-13 12:57:14,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:14,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1061 transitions. [2022-12-13 12:57:14,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.6666666666667) internal successors, (1061), 3 states have internal predecessors, (1061), 0 states have call successors, (0), 0 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 12:57:14,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:14,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:14,948 INFO L175 Difference]: Start difference. First operand has 53 places, 76 transitions, 291 flow. Second operand 3 states and 1061 transitions. [2022-12-13 12:57:14,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 108 transitions, 605 flow [2022-12-13 12:57:14,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 108 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:57:14,955 INFO L231 Difference]: Finished difference. Result has 56 places, 78 transitions, 315 flow [2022-12-13 12:57:14,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=56, PETRI_TRANSITIONS=78} [2022-12-13 12:57:14,956 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -12 predicate places. [2022-12-13 12:57:14,956 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 78 transitions, 315 flow [2022-12-13 12:57:14,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 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 12:57:14,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:14,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:14,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:57:14,957 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:57:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:14,957 INFO L85 PathProgramCache]: Analyzing trace with hash -890821804, now seen corresponding path program 1 times [2022-12-13 12:57:14,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:14,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411606991] [2022-12-13 12:57:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:14,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:15,038 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 12:57:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411606991] [2022-12-13 12:57:15,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411606991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:15,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:15,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:57:15,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516068454] [2022-12-13 12:57:15,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:15,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:15,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:15,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 836 [2022-12-13 12:57:15,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 78 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 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 12:57:15,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:15,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 836 [2022-12-13 12:57:15,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:25,301 INFO L130 PetriNetUnfolder]: 55871/72846 cut-off events. [2022-12-13 12:57:25,301 INFO L131 PetriNetUnfolder]: For 49125/49125 co-relation queries the response was YES. [2022-12-13 12:57:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191614 conditions, 72846 events. 55871/72846 cut-off events. For 49125/49125 co-relation queries the response was YES. Maximal size of possible extension queue 3095. Compared 415458 event pairs, 14045 based on Foata normal form. 2130/51463 useless extension candidates. Maximal degree in co-relation 191599. Up to 50951 conditions per place. [2022-12-13 12:57:25,584 INFO L137 encePairwiseOnDemand]: 833/836 looper letters, 100 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2022-12-13 12:57:25,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 102 transitions, 589 flow [2022-12-13 12:57:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1056 transitions. [2022-12-13 12:57:25,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-12-13 12:57:25,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1056 transitions. [2022-12-13 12:57:25,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1056 transitions. [2022-12-13 12:57:25,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:25,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1056 transitions. [2022-12-13 12:57:25,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 12:57:25,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:25,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:25,592 INFO L175 Difference]: Start difference. First operand has 56 places, 78 transitions, 315 flow. Second operand 3 states and 1056 transitions. [2022-12-13 12:57:25,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 102 transitions, 589 flow [2022-12-13 12:57:25,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 102 transitions, 579 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:57:25,607 INFO L231 Difference]: Finished difference. Result has 57 places, 78 transitions, 317 flow [2022-12-13 12:57:25,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=57, PETRI_TRANSITIONS=78} [2022-12-13 12:57:25,608 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2022-12-13 12:57:25,608 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 78 transitions, 317 flow [2022-12-13 12:57:25,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 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 12:57:25,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:25,608 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:25,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:57:25,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:57:25,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1845666582, now seen corresponding path program 1 times [2022-12-13 12:57:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:25,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179845668] [2022-12-13 12:57:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:25,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:25,751 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 12:57:25,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:25,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179845668] [2022-12-13 12:57:25,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179845668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:25,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:25,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:57:25,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142836346] [2022-12-13 12:57:25,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:25,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:57:25,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:25,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:57:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:57:25,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 836 [2022-12-13 12:57:25,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 78 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 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 12:57:25,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:25,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 836 [2022-12-13 12:57:25,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:33,654 INFO L130 PetriNetUnfolder]: 45791/59876 cut-off events. [2022-12-13 12:57:33,654 INFO L131 PetriNetUnfolder]: For 23710/23710 co-relation queries the response was YES. [2022-12-13 12:57:33,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155180 conditions, 59876 events. 45791/59876 cut-off events. For 23710/23710 co-relation queries the response was YES. Maximal size of possible extension queue 2563. Compared 335224 event pairs, 7855 based on Foata normal form. 1340/41253 useless extension candidates. Maximal degree in co-relation 155164. Up to 25361 conditions per place. [2022-12-13 12:57:33,875 INFO L137 encePairwiseOnDemand]: 832/836 looper letters, 118 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2022-12-13 12:57:33,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 122 transitions, 677 flow [2022-12-13 12:57:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:57:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:57:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1385 transitions. [2022-12-13 12:57:33,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41417464114832536 [2022-12-13 12:57:33,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1385 transitions. [2022-12-13 12:57:33,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1385 transitions. [2022-12-13 12:57:33,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:33,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1385 transitions. [2022-12-13 12:57:33,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.25) internal successors, (1385), 4 states have internal predecessors, (1385), 0 states have call successors, (0), 0 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 12:57:33,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:57:33,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:57:33,885 INFO L175 Difference]: Start difference. First operand has 57 places, 78 transitions, 317 flow. Second operand 4 states and 1385 transitions. [2022-12-13 12:57:33,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 122 transitions, 677 flow [2022-12-13 12:57:33,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 122 transitions, 673 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:57:33,911 INFO L231 Difference]: Finished difference. Result has 59 places, 77 transitions, 315 flow [2022-12-13 12:57:33,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=59, PETRI_TRANSITIONS=77} [2022-12-13 12:57:33,912 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2022-12-13 12:57:33,912 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 77 transitions, 315 flow [2022-12-13 12:57:33,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 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 12:57:33,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:33,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:33,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:57:33,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:57:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1381158592, now seen corresponding path program 1 times [2022-12-13 12:57:33,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:33,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036611806] [2022-12-13 12:57:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:33,951 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 12:57:33,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:33,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036611806] [2022-12-13 12:57:33,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036611806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:33,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:33,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:57:33,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160924689] [2022-12-13 12:57:33,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:33,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:33,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 836 [2022-12-13 12:57:33,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 77 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 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 12:57:33,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:33,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 836 [2022-12-13 12:57:33,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:45,254 INFO L130 PetriNetUnfolder]: 65671/84756 cut-off events. [2022-12-13 12:57:45,254 INFO L131 PetriNetUnfolder]: For 52070/52070 co-relation queries the response was YES. [2022-12-13 12:57:45,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222041 conditions, 84756 events. 65671/84756 cut-off events. For 52070/52070 co-relation queries the response was YES. Maximal size of possible extension queue 3656. Compared 474713 event pairs, 32325 based on Foata normal form. 0/57113 useless extension candidates. Maximal degree in co-relation 222024. Up to 44471 conditions per place. [2022-12-13 12:57:45,614 INFO L137 encePairwiseOnDemand]: 832/836 looper letters, 105 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2022-12-13 12:57:45,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 109 transitions, 652 flow [2022-12-13 12:57:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1059 transitions. [2022-12-13 12:57:45,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4222488038277512 [2022-12-13 12:57:45,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1059 transitions. [2022-12-13 12:57:45,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1059 transitions. [2022-12-13 12:57:45,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:45,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1059 transitions. [2022-12-13 12:57:45,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 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 12:57:45,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:45,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:45,622 INFO L175 Difference]: Start difference. First operand has 59 places, 77 transitions, 315 flow. Second operand 3 states and 1059 transitions. [2022-12-13 12:57:45,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 109 transitions, 652 flow [2022-12-13 12:57:45,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 644 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:57:45,637 INFO L231 Difference]: Finished difference. Result has 61 places, 79 transitions, 338 flow [2022-12-13 12:57:45,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=61, PETRI_TRANSITIONS=79} [2022-12-13 12:57:45,637 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2022-12-13 12:57:45,637 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 79 transitions, 338 flow [2022-12-13 12:57:45,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 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 12:57:45,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:45,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:45,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:57:45,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:57:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1381158642, now seen corresponding path program 1 times [2022-12-13 12:57:45,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:45,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817818720] [2022-12-13 12:57:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:45,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:45,709 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 12:57:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:45,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817818720] [2022-12-13 12:57:45,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817818720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:45,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:45,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:57:45,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642288590] [2022-12-13 12:57:45,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:45,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:45,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:45,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:45,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 836 [2022-12-13 12:57:45,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 79 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 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 12:57:45,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:45,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 836 [2022-12-13 12:57:45,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:57,128 INFO L130 PetriNetUnfolder]: 63401/81746 cut-off events. [2022-12-13 12:57:57,129 INFO L131 PetriNetUnfolder]: For 78860/78860 co-relation queries the response was YES. [2022-12-13 12:57:57,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232483 conditions, 81746 events. 63401/81746 cut-off events. For 78860/78860 co-relation queries the response was YES. Maximal size of possible extension queue 3546. Compared 458602 event pairs, 16855 based on Foata normal form. 1100/62243 useless extension candidates. Maximal degree in co-relation 232464. Up to 72221 conditions per place. [2022-12-13 12:57:57,503 INFO L137 encePairwiseOnDemand]: 833/836 looper letters, 96 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2022-12-13 12:57:57,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 98 transitions, 591 flow [2022-12-13 12:57:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2022-12-13 12:57:57,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4190590111642743 [2022-12-13 12:57:57,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2022-12-13 12:57:57,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2022-12-13 12:57:57,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:57,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2022-12-13 12:57:57,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 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 12:57:57,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:57,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:57:57,511 INFO L175 Difference]: Start difference. First operand has 61 places, 79 transitions, 338 flow. Second operand 3 states and 1051 transitions. [2022-12-13 12:57:57,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 98 transitions, 591 flow [2022-12-13 12:57:57,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 581 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:57:57,532 INFO L231 Difference]: Finished difference. Result has 62 places, 79 transitions, 340 flow [2022-12-13 12:57:57,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=62, PETRI_TRANSITIONS=79} [2022-12-13 12:57:57,532 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2022-12-13 12:57:57,532 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 79 transitions, 340 flow [2022-12-13 12:57:57,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 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 12:57:57,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:57,533 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:57,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:57:57,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:57:57,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash 133759601, now seen corresponding path program 1 times [2022-12-13 12:57:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:57,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336006916] [2022-12-13 12:57:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:57,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:57,721 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 12:57:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336006916] [2022-12-13 12:57:57,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336006916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:57,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:57,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:57:57,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360773150] [2022-12-13 12:57:57,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:57:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:57,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:57:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:57:57,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 836 [2022-12-13 12:57:57,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 79 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 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 12:57:57,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:57,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 836 [2022-12-13 12:57:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:11,451 INFO L130 PetriNetUnfolder]: 72996/95561 cut-off events. [2022-12-13 12:58:11,451 INFO L131 PetriNetUnfolder]: For 89325/89325 co-relation queries the response was YES. [2022-12-13 12:58:11,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270917 conditions, 95561 events. 72996/95561 cut-off events. For 89325/89325 co-relation queries the response was YES. Maximal size of possible extension queue 3929. Compared 551664 event pairs, 37940 based on Foata normal form. 720/73316 useless extension candidates. Maximal degree in co-relation 270897. Up to 81865 conditions per place. [2022-12-13 12:58:11,851 INFO L137 encePairwiseOnDemand]: 826/836 looper letters, 171 selfloop transitions, 12 changer transitions 0/183 dead transitions. [2022-12-13 12:58:11,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 183 transitions, 1090 flow [2022-12-13 12:58:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:58:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:58:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2557 transitions. [2022-12-13 12:58:11,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38232655502392343 [2022-12-13 12:58:11,855 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2557 transitions. [2022-12-13 12:58:11,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2557 transitions. [2022-12-13 12:58:11,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:11,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2557 transitions. [2022-12-13 12:58:11,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 319.625) internal successors, (2557), 8 states have internal predecessors, (2557), 0 states have call successors, (0), 0 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 12:58:11,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 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 12:58:11,866 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 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 12:58:11,866 INFO L175 Difference]: Start difference. First operand has 62 places, 79 transitions, 340 flow. Second operand 8 states and 2557 transitions. [2022-12-13 12:58:11,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 183 transitions, 1090 flow [2022-12-13 12:58:11,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 183 transitions, 1082 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:58:11,874 INFO L231 Difference]: Finished difference. Result has 72 places, 88 transitions, 468 flow [2022-12-13 12:58:11,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=468, PETRI_PLACES=72, PETRI_TRANSITIONS=88} [2022-12-13 12:58:11,875 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2022-12-13 12:58:11,875 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 88 transitions, 468 flow [2022-12-13 12:58:11,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 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 12:58:11,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:11,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:58:11,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:58:11,876 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:58:11,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1477909103, now seen corresponding path program 1 times [2022-12-13 12:58:11,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:11,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961837556] [2022-12-13 12:58:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:11,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:12,085 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 12:58:12,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:12,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961837556] [2022-12-13 12:58:12,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961837556] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:58:12,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307757330] [2022-12-13 12:58:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:12,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:58:12,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:58:12,087 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:58:12,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:58:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:12,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:58:12,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:58:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:58:12,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:58:12,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307757330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:12,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:58:12,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2022-12-13 12:58:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126789864] [2022-12-13 12:58:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:58:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:58:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:58:12,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 836 [2022-12-13 12:58:12,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 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 12:58:12,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:12,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 836 [2022-12-13 12:58:12,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:23,778 INFO L130 PetriNetUnfolder]: 62746/82091 cut-off events. [2022-12-13 12:58:23,778 INFO L131 PetriNetUnfolder]: For 100169/100169 co-relation queries the response was YES. [2022-12-13 12:58:23,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250619 conditions, 82091 events. 62746/82091 cut-off events. For 100169/100169 co-relation queries the response was YES. Maximal size of possible extension queue 3886. Compared 470301 event pairs, 14390 based on Foata normal form. 680/67649 useless extension candidates. Maximal degree in co-relation 250594. Up to 37391 conditions per place. [2022-12-13 12:58:24,188 INFO L137 encePairwiseOnDemand]: 832/836 looper letters, 120 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2022-12-13 12:58:24,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 127 transitions, 850 flow [2022-12-13 12:58:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:58:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:58:24,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1386 transitions. [2022-12-13 12:58:24,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2022-12-13 12:58:24,192 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1386 transitions. [2022-12-13 12:58:24,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1386 transitions. [2022-12-13 12:58:24,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:24,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1386 transitions. [2022-12-13 12:58:24,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.5) internal successors, (1386), 4 states have internal predecessors, (1386), 0 states have call successors, (0), 0 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 12:58:24,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:58:24,197 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:58:24,197 INFO L175 Difference]: Start difference. First operand has 72 places, 88 transitions, 468 flow. Second operand 4 states and 1386 transitions. [2022-12-13 12:58:24,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 127 transitions, 850 flow [2022-12-13 12:58:24,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 127 transitions, 844 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 12:58:24,592 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 466 flow [2022-12-13 12:58:24,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2022-12-13 12:58:24,592 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2022-12-13 12:58:24,592 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 466 flow [2022-12-13 12:58:24,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 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 12:58:24,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:24,593 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:58:24,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 12:58:24,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 12:58:24,795 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:58:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash -148431338, now seen corresponding path program 1 times [2022-12-13 12:58:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:24,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867302579] [2022-12-13 12:58:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:24,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:24,896 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 12:58:24,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:24,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867302579] [2022-12-13 12:58:24,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867302579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:24,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:24,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:58:24,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429451918] [2022-12-13 12:58:24,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:24,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:58:24,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:24,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:58:24,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:58:24,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 836 [2022-12-13 12:58:24,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 318.25) internal successors, (1273), 4 states have internal predecessors, (1273), 0 states have call successors, (0), 0 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 12:58:24,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:24,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 836 [2022-12-13 12:58:24,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:39,086 INFO L130 PetriNetUnfolder]: 73091/94196 cut-off events. [2022-12-13 12:58:39,086 INFO L131 PetriNetUnfolder]: For 151404/151404 co-relation queries the response was YES. [2022-12-13 12:58:39,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289709 conditions, 94196 events. 73091/94196 cut-off events. For 151404/151404 co-relation queries the response was YES. Maximal size of possible extension queue 3879. Compared 519143 event pairs, 52975 based on Foata normal form. 3770/80674 useless extension candidates. Maximal degree in co-relation 289682. Up to 68275 conditions per place. [2022-12-13 12:58:39,638 INFO L137 encePairwiseOnDemand]: 827/836 looper letters, 135 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2022-12-13 12:58:39,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 923 flow [2022-12-13 12:58:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:58:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:58:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1345 transitions. [2022-12-13 12:58:39,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4022129186602871 [2022-12-13 12:58:39,642 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1345 transitions. [2022-12-13 12:58:39,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1345 transitions. [2022-12-13 12:58:39,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:39,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1345 transitions. [2022-12-13 12:58:39,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 336.25) internal successors, (1345), 4 states have internal predecessors, (1345), 0 states have call successors, (0), 0 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 12:58:39,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:58:39,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:58:39,650 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 466 flow. Second operand 4 states and 1345 transitions. [2022-12-13 12:58:39,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 923 flow [2022-12-13 12:58:40,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 903 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 12:58:40,957 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 437 flow [2022-12-13 12:58:40,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=437, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2022-12-13 12:58:40,958 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2022-12-13 12:58:40,958 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 437 flow [2022-12-13 12:58:40,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.25) internal successors, (1273), 4 states have internal predecessors, (1273), 0 states have call successors, (0), 0 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 12:58:40,958 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:40,958 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:58:40,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:58:40,959 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:58:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:40,959 INFO L85 PathProgramCache]: Analyzing trace with hash -148431291, now seen corresponding path program 1 times [2022-12-13 12:58:40,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:40,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527003592] [2022-12-13 12:58:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:40,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:40,993 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 12:58:40,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:40,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527003592] [2022-12-13 12:58:40,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527003592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:40,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:40,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:58:40,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615147657] [2022-12-13 12:58:40,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:40,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:58:40,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:40,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:58:40,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:58:40,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 836 [2022-12-13 12:58:41,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 333.3333333333333) internal successors, (1000), 3 states have internal predecessors, (1000), 0 states have call successors, (0), 0 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 12:58:41,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:41,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 836 [2022-12-13 12:58:41,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:54,644 INFO L130 PetriNetUnfolder]: 72531/93336 cut-off events. [2022-12-13 12:58:54,644 INFO L131 PetriNetUnfolder]: For 125945/125945 co-relation queries the response was YES. [2022-12-13 12:58:54,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289730 conditions, 93336 events. 72531/93336 cut-off events. For 125945/125945 co-relation queries the response was YES. Maximal size of possible extension queue 3861. Compared 516697 event pairs, 32010 based on Foata normal form. 0/78504 useless extension candidates. Maximal degree in co-relation 289704. Up to 74236 conditions per place. [2022-12-13 12:58:55,114 INFO L137 encePairwiseOnDemand]: 832/836 looper letters, 111 selfloop transitions, 3 changer transitions 1/115 dead transitions. [2022-12-13 12:58:55,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 823 flow [2022-12-13 12:58:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:58:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:58:55,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2022-12-13 12:58:55,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42145135566188197 [2022-12-13 12:58:55,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2022-12-13 12:58:55,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2022-12-13 12:58:55,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:55,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2022-12-13 12:58:55,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 0 states have call successors, (0), 0 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 12:58:55,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:58:55,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:58:55,121 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 437 flow. Second operand 3 states and 1057 transitions. [2022-12-13 12:58:55,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 823 flow [2022-12-13 12:58:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 818 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:58:55,161 INFO L231 Difference]: Finished difference. Result has 74 places, 85 transitions, 454 flow [2022-12-13 12:58:55,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=74, PETRI_TRANSITIONS=85} [2022-12-13 12:58:55,162 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2022-12-13 12:58:55,162 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 85 transitions, 454 flow [2022-12-13 12:58:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.3333333333333) internal successors, (1000), 3 states have internal predecessors, (1000), 0 states have call successors, (0), 0 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 12:58:55,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:55,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:58:55,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:58:55,163 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:58:55,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -306399254, now seen corresponding path program 1 times [2022-12-13 12:58:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:55,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138874479] [2022-12-13 12:58:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:55,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:55,271 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 12:58:55,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:55,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138874479] [2022-12-13 12:58:55,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138874479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:55,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:55,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:58:55,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586690809] [2022-12-13 12:58:55,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:55,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:58:55,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:58:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:58:55,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 836 [2022-12-13 12:58:55,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 85 transitions, 454 flow. Second operand has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 12:58:55,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:55,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 836 [2022-12-13 12:58:55,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:06,162 INFO L130 PetriNetUnfolder]: 53466/68901 cut-off events. [2022-12-13 12:59:06,162 INFO L131 PetriNetUnfolder]: For 126820/126820 co-relation queries the response was YES. [2022-12-13 12:59:06,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229381 conditions, 68901 events. 53466/68901 cut-off events. For 126820/126820 co-relation queries the response was YES. Maximal size of possible extension queue 3173. Compared 366438 event pairs, 39610 based on Foata normal form. 150/61849 useless extension candidates. Maximal degree in co-relation 229353. Up to 67845 conditions per place. [2022-12-13 12:59:06,518 INFO L137 encePairwiseOnDemand]: 832/836 looper letters, 76 selfloop transitions, 2 changer transitions 45/123 dead transitions. [2022-12-13 12:59:06,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 123 transitions, 819 flow [2022-12-13 12:59:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:59:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:59:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1322 transitions. [2022-12-13 12:59:06,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3953349282296651 [2022-12-13 12:59:06,522 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1322 transitions. [2022-12-13 12:59:06,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1322 transitions. [2022-12-13 12:59:06,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:06,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1322 transitions. [2022-12-13 12:59:06,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.5) internal successors, (1322), 4 states have internal predecessors, (1322), 0 states have call successors, (0), 0 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 12:59:06,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:59:06,527 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 12:59:06,527 INFO L175 Difference]: Start difference. First operand has 74 places, 85 transitions, 454 flow. Second operand 4 states and 1322 transitions. [2022-12-13 12:59:06,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 123 transitions, 819 flow [2022-12-13 12:59:06,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 123 transitions, 809 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 12:59:06,582 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 385 flow [2022-12-13 12:59:06,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2022-12-13 12:59:06,582 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2022-12-13 12:59:06,582 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 385 flow [2022-12-13 12:59:06,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 12:59:06,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:06,582 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:06,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:59:06,583 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:59:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:06,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1429469736, now seen corresponding path program 1 times [2022-12-13 12:59:06,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:06,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991778917] [2022-12-13 12:59:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:06,691 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 12:59:06,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:06,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991778917] [2022-12-13 12:59:06,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991778917] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:59:06,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362822955] [2022-12-13 12:59:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:06,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:59:06,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:59:06,693 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:59:06,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:59:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:06,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:59:06,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:59:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:59:06,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:59:06,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362822955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:59:06,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:59:06,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 12:59:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977813974] [2022-12-13 12:59:06,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:59:06,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:59:06,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:59:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:59:06,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 836 [2022-12-13 12:59:06,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 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 12:59:06,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:06,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 836 [2022-12-13 12:59:06,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:11,069 INFO L130 PetriNetUnfolder]: 19665/25500 cut-off events. [2022-12-13 12:59:11,070 INFO L131 PetriNetUnfolder]: For 54798/54798 co-relation queries the response was YES. [2022-12-13 12:59:11,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75734 conditions, 25500 events. 19665/25500 cut-off events. For 54798/54798 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 121052 event pairs, 13390 based on Foata normal form. 4670/27919 useless extension candidates. Maximal degree in co-relation 75718. Up to 25500 conditions per place. [2022-12-13 12:59:11,172 INFO L137 encePairwiseOnDemand]: 829/836 looper letters, 69 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2022-12-13 12:59:11,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 465 flow [2022-12-13 12:59:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:59:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:59:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1036 transitions. [2022-12-13 12:59:11,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4130781499202552 [2022-12-13 12:59:11,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1036 transitions. [2022-12-13 12:59:11,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1036 transitions. [2022-12-13 12:59:11,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:11,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1036 transitions. [2022-12-13 12:59:11,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.3333333333333) internal successors, (1036), 3 states have internal predecessors, (1036), 0 states have call successors, (0), 0 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 12:59:11,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:59:11,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:59:11,179 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 385 flow. Second operand 3 states and 1036 transitions. [2022-12-13 12:59:11,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 465 flow [2022-12-13 12:59:11,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 441 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-12-13 12:59:11,220 INFO L231 Difference]: Finished difference. Result has 59 places, 70 transitions, 303 flow [2022-12-13 12:59:11,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=59, PETRI_TRANSITIONS=70} [2022-12-13 12:59:11,221 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2022-12-13 12:59:11,221 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 70 transitions, 303 flow [2022-12-13 12:59:11,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 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 12:59:11,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:11,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:11,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:59:11,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 12:59:11,423 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:59:11,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1363883928, now seen corresponding path program 1 times [2022-12-13 12:59:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:11,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41805333] [2022-12-13 12:59:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:59:11,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:11,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41805333] [2022-12-13 12:59:11,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41805333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:59:11,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:59:11,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:59:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137589549] [2022-12-13 12:59:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:59:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:59:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:59:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:59:11,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 836 [2022-12-13 12:59:11,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 70 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 12:59:11,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:11,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 836 [2022-12-13 12:59:11,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:14,371 INFO L130 PetriNetUnfolder]: 13360/17405 cut-off events. [2022-12-13 12:59:14,371 INFO L131 PetriNetUnfolder]: For 17925/17925 co-relation queries the response was YES. [2022-12-13 12:59:14,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49472 conditions, 17405 events. 13360/17405 cut-off events. For 17925/17925 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 78647 event pairs, 8575 based on Foata normal form. 1790/17693 useless extension candidates. Maximal degree in co-relation 49460. Up to 17405 conditions per place. [2022-12-13 12:59:14,419 INFO L137 encePairwiseOnDemand]: 834/836 looper letters, 66 selfloop transitions, 1 changer transitions 2/69 dead transitions. [2022-12-13 12:59:14,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 437 flow [2022-12-13 12:59:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:59:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:59:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1030 transitions. [2022-12-13 12:59:14,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41068580542264754 [2022-12-13 12:59:14,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1030 transitions. [2022-12-13 12:59:14,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1030 transitions. [2022-12-13 12:59:14,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:14,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1030 transitions. [2022-12-13 12:59:14,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.3333333333333) internal successors, (1030), 3 states have internal predecessors, (1030), 0 states have call successors, (0), 0 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 12:59:14,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:59:14,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:59:14,424 INFO L175 Difference]: Start difference. First operand has 59 places, 70 transitions, 303 flow. Second operand 3 states and 1030 transitions. [2022-12-13 12:59:14,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 437 flow [2022-12-13 12:59:14,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:59:14,427 INFO L231 Difference]: Finished difference. Result has 58 places, 67 transitions, 293 flow [2022-12-13 12:59:14,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=58, PETRI_TRANSITIONS=67} [2022-12-13 12:59:14,428 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2022-12-13 12:59:14,428 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 67 transitions, 293 flow [2022-12-13 12:59:14,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 12:59:14,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:14,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:14,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:59:14,428 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:59:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:14,429 INFO L85 PathProgramCache]: Analyzing trace with hash -727257114, now seen corresponding path program 1 times [2022-12-13 12:59:14,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:14,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010680453] [2022-12-13 12:59:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:59:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:14,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010680453] [2022-12-13 12:59:14,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010680453] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:59:14,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135552183] [2022-12-13 12:59:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:14,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:59:14,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:59:14,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:59:14,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:59:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:14,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:59:14,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:59:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:59:14,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:59:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:59:14,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135552183] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:59:14,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:59:14,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2022-12-13 12:59:14,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163824357] [2022-12-13 12:59:14,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:59:14,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:59:14,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:14,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:59:14,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:59:14,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 836 [2022-12-13 12:59:14,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 67 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 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 12:59:14,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:14,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 836 [2022-12-13 12:59:14,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:18,370 INFO L130 PetriNetUnfolder]: 17740/22945 cut-off events. [2022-12-13 12:59:18,370 INFO L131 PetriNetUnfolder]: For 20030/20030 co-relation queries the response was YES. [2022-12-13 12:59:18,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64982 conditions, 22945 events. 17740/22945 cut-off events. For 20030/20030 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 107618 event pairs, 5475 based on Foata normal form. 640/21483 useless extension candidates. Maximal degree in co-relation 64971. Up to 15490 conditions per place. [2022-12-13 12:59:18,449 INFO L137 encePairwiseOnDemand]: 832/836 looper letters, 84 selfloop transitions, 5 changer transitions 6/95 dead transitions. [2022-12-13 12:59:18,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 573 flow [2022-12-13 12:59:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:59:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:59:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1682 transitions. [2022-12-13 12:59:18,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40239234449760763 [2022-12-13 12:59:18,453 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1682 transitions. [2022-12-13 12:59:18,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1682 transitions. [2022-12-13 12:59:18,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:18,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1682 transitions. [2022-12-13 12:59:18,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 336.4) internal successors, (1682), 5 states have internal predecessors, (1682), 0 states have call successors, (0), 0 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 12:59:18,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 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 12:59:18,458 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 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 12:59:18,458 INFO L175 Difference]: Start difference. First operand has 58 places, 67 transitions, 293 flow. Second operand 5 states and 1682 transitions. [2022-12-13 12:59:18,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 573 flow [2022-12-13 12:59:18,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:59:18,462 INFO L231 Difference]: Finished difference. Result has 60 places, 68 transitions, 313 flow [2022-12-13 12:59:18,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=60, PETRI_TRANSITIONS=68} [2022-12-13 12:59:18,462 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2022-12-13 12:59:18,463 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 68 transitions, 313 flow [2022-12-13 12:59:18,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 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 12:59:18,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:18,463 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:18,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:59:18,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:59:18,665 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:59:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:18,666 INFO L85 PathProgramCache]: Analyzing trace with hash 669276609, now seen corresponding path program 1 times [2022-12-13 12:59:18,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:18,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210151326] [2022-12-13 12:59:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:18,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:59:18,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:18,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210151326] [2022-12-13 12:59:18,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210151326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:59:18,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:59:18,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:59:18,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436172685] [2022-12-13 12:59:18,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:59:18,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:59:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:18,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:59:18,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:59:18,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 836 [2022-12-13 12:59:18,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 314.2) internal successors, (1571), 5 states have internal predecessors, (1571), 0 states have call successors, (0), 0 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 12:59:18,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:18,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 836 [2022-12-13 12:59:18,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:22,443 INFO L130 PetriNetUnfolder]: 16718/21675 cut-off events. [2022-12-13 12:59:22,443 INFO L131 PetriNetUnfolder]: For 25462/25462 co-relation queries the response was YES. [2022-12-13 12:59:22,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64236 conditions, 21675 events. 16718/21675 cut-off events. For 25462/25462 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 100889 event pairs, 11051 based on Foata normal form. 216/19969 useless extension candidates. Maximal degree in co-relation 64224. Up to 18334 conditions per place. [2022-12-13 12:59:22,523 INFO L137 encePairwiseOnDemand]: 825/836 looper letters, 77 selfloop transitions, 19 changer transitions 2/98 dead transitions. [2022-12-13 12:59:22,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 634 flow [2022-12-13 12:59:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:59:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:59:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1621 transitions. [2022-12-13 12:59:22,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.387799043062201 [2022-12-13 12:59:22,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1621 transitions. [2022-12-13 12:59:22,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1621 transitions. [2022-12-13 12:59:22,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:22,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1621 transitions. [2022-12-13 12:59:22,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.2) internal successors, (1621), 5 states have internal predecessors, (1621), 0 states have call successors, (0), 0 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 12:59:22,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 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 12:59:22,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 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 12:59:22,531 INFO L175 Difference]: Start difference. First operand has 60 places, 68 transitions, 313 flow. Second operand 5 states and 1621 transitions. [2022-12-13 12:59:22,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 634 flow [2022-12-13 12:59:22,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 98 transitions, 626 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 12:59:22,545 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 377 flow [2022-12-13 12:59:22,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2022-12-13 12:59:22,545 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2022-12-13 12:59:22,546 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 377 flow [2022-12-13 12:59:22,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 314.2) internal successors, (1571), 5 states have internal predecessors, (1571), 0 states have call successors, (0), 0 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 12:59:22,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:22,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:22,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:59:22,546 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:59:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:22,546 INFO L85 PathProgramCache]: Analyzing trace with hash 669276582, now seen corresponding path program 1 times [2022-12-13 12:59:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:22,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434482327] [2022-12-13 12:59:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:22,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:59:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:22,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434482327] [2022-12-13 12:59:22,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434482327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:59:22,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:59:22,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:59:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286875378] [2022-12-13 12:59:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:59:22,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:59:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:22,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:59:22,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:59:22,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 836 [2022-12-13 12:59:22,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 314.2) internal successors, (1571), 5 states have internal predecessors, (1571), 0 states have call successors, (0), 0 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 12:59:22,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:22,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 836 [2022-12-13 12:59:22,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:28,921 INFO L130 PetriNetUnfolder]: 27861/36424 cut-off events. [2022-12-13 12:59:28,921 INFO L131 PetriNetUnfolder]: For 48774/48774 co-relation queries the response was YES. [2022-12-13 12:59:28,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108093 conditions, 36424 events. 27861/36424 cut-off events. For 48774/48774 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 183864 event pairs, 13462 based on Foata normal form. 1312/35832 useless extension candidates. Maximal degree in co-relation 108079. Up to 19681 conditions per place. [2022-12-13 12:59:29,068 INFO L137 encePairwiseOnDemand]: 825/836 looper letters, 115 selfloop transitions, 16 changer transitions 10/141 dead transitions. [2022-12-13 12:59:29,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 141 transitions, 950 flow [2022-12-13 12:59:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:59:29,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:59:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1968 transitions. [2022-12-13 12:59:29,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3923444976076555 [2022-12-13 12:59:29,072 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1968 transitions. [2022-12-13 12:59:29,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1968 transitions. [2022-12-13 12:59:29,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:29,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1968 transitions. [2022-12-13 12:59:29,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 12:59:29,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 836.0) internal successors, (5852), 7 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 12:59:29,078 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 836.0) internal successors, (5852), 7 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 12:59:29,078 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 377 flow. Second operand 6 states and 1968 transitions. [2022-12-13 12:59:29,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 141 transitions, 950 flow [2022-12-13 12:59:29,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 141 transitions, 926 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 12:59:29,196 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 442 flow [2022-12-13 12:59:29,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2022-12-13 12:59:29,197 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2022-12-13 12:59:29,197 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 442 flow [2022-12-13 12:59:29,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 314.2) internal successors, (1571), 5 states have internal predecessors, (1571), 0 states have call successors, (0), 0 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 12:59:29,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:29,197 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:29,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:59:29,197 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:59:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 669276748, now seen corresponding path program 1 times [2022-12-13 12:59:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:29,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655179793] [2022-12-13 12:59:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:59:29,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:29,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655179793] [2022-12-13 12:59:29,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655179793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:59:29,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:59:29,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:59:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353925462] [2022-12-13 12:59:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:59:29,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:59:29,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:59:29,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:59:29,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 836 [2022-12-13 12:59:29,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 442 flow. Second operand has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 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 12:59:29,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:29,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 836 [2022-12-13 12:59:29,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:41,098 INFO L130 PetriNetUnfolder]: 51148/67040 cut-off events. [2022-12-13 12:59:41,099 INFO L131 PetriNetUnfolder]: For 101198/101198 co-relation queries the response was YES. [2022-12-13 12:59:41,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207430 conditions, 67040 events. 51148/67040 cut-off events. For 101198/101198 co-relation queries the response was YES. Maximal size of possible extension queue 2437. Compared 369822 event pairs, 34040 based on Foata normal form. 0/65816 useless extension candidates. Maximal degree in co-relation 207413. Up to 36414 conditions per place. [2022-12-13 12:59:41,453 INFO L137 encePairwiseOnDemand]: 827/836 looper letters, 132 selfloop transitions, 15 changer transitions 3/150 dead transitions. [2022-12-13 12:59:41,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 150 transitions, 1156 flow [2022-12-13 12:59:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:59:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:59:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1668 transitions. [2022-12-13 12:59:41,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3990430622009569 [2022-12-13 12:59:41,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1668 transitions. [2022-12-13 12:59:41,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1668 transitions. [2022-12-13 12:59:41,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:41,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1668 transitions. [2022-12-13 12:59:41,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 333.6) internal successors, (1668), 5 states have internal predecessors, (1668), 0 states have call successors, (0), 0 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 12:59:41,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 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 12:59:41,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 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 12:59:41,462 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 442 flow. Second operand 5 states and 1668 transitions. [2022-12-13 12:59:41,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 150 transitions, 1156 flow [2022-12-13 12:59:41,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 150 transitions, 1117 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 12:59:41,783 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 529 flow [2022-12-13 12:59:41,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2022-12-13 12:59:41,783 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2022-12-13 12:59:41,784 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 529 flow [2022-12-13 12:59:41,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 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 12:59:41,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:41,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:41,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:59:41,784 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:59:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1492564268, now seen corresponding path program 1 times [2022-12-13 12:59:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873530007] [2022-12-13 12:59:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:41,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:59:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:41,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873530007] [2022-12-13 12:59:41,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873530007] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:59:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045241671] [2022-12-13 12:59:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:41,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:59:41,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:59:41,891 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:59:41,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:59:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:42,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:59:42,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:59:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:59:42,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:59:42,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045241671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:59:42,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:59:42,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 12:59:42,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836458603] [2022-12-13 12:59:42,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:59:42,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:59:42,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:59:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:59:42,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 836 [2022-12-13 12:59:42,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 12:59:42,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:42,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 836 [2022-12-13 12:59:42,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:53,349 INFO L130 PetriNetUnfolder]: 46584/61252 cut-off events. [2022-12-13 12:59:53,349 INFO L131 PetriNetUnfolder]: For 105634/105634 co-relation queries the response was YES. [2022-12-13 12:59:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189068 conditions, 61252 events. 46584/61252 cut-off events. For 105634/105634 co-relation queries the response was YES. Maximal size of possible extension queue 2160. Compared 334328 event pairs, 30820 based on Foata normal form. 1224/62476 useless extension candidates. Maximal degree in co-relation 189049. Up to 61252 conditions per place. [2022-12-13 12:59:53,664 INFO L137 encePairwiseOnDemand]: 834/836 looper letters, 76 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2022-12-13 12:59:53,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 675 flow [2022-12-13 12:59:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:59:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:59:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2022-12-13 12:59:53,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4094896331738437 [2022-12-13 12:59:53,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2022-12-13 12:59:53,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2022-12-13 12:59:53,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:53,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2022-12-13 12:59:53,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 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 12:59:53,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:59:53,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 12:59:53,671 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 529 flow. Second operand 3 states and 1027 transitions. [2022-12-13 12:59:53,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 675 flow [2022-12-13 12:59:53,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 656 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 12:59:53,966 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 504 flow [2022-12-13 12:59:53,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2022-12-13 12:59:53,967 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2022-12-13 12:59:53,967 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 504 flow [2022-12-13 12:59:53,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 12:59:53,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:53,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:53,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 12:59:54,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:59:54,169 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:59:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1663851168, now seen corresponding path program 1 times [2022-12-13 12:59:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:54,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319687547] [2022-12-13 12:59:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:59:54,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:54,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319687547] [2022-12-13 12:59:54,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319687547] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:59:54,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996478938] [2022-12-13 12:59:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:54,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:59:54,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:59:54,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:59:54,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:59:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:54,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:59:54,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:59:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:59:54,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:59:54,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996478938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:59:54,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:59:54,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 12:59:54,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319281959] [2022-12-13 12:59:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:59:54,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:59:54,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:54,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:59:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:59:54,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 836 [2022-12-13 12:59:54,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 12:59:54,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:54,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 836 [2022-12-13 12:59:54,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:03,729 INFO L130 PetriNetUnfolder]: 34040/45540 cut-off events. [2022-12-13 13:00:03,729 INFO L131 PetriNetUnfolder]: For 71095/71095 co-relation queries the response was YES. [2022-12-13 13:00:03,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133070 conditions, 45540 events. 34040/45540 cut-off events. For 71095/71095 co-relation queries the response was YES. Maximal size of possible extension queue 1485. Compared 250772 event pairs, 22900 based on Foata normal form. 4032/49572 useless extension candidates. Maximal degree in co-relation 133051. Up to 45540 conditions per place. [2022-12-13 13:00:03,913 INFO L137 encePairwiseOnDemand]: 833/836 looper letters, 67 selfloop transitions, 1 changer transitions 6/74 dead transitions. [2022-12-13 13:00:03,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 629 flow [2022-12-13 13:00:03,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1026 transitions. [2022-12-13 13:00:03,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2022-12-13 13:00:03,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1026 transitions. [2022-12-13 13:00:03,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1026 transitions. [2022-12-13 13:00:03,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:03,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1026 transitions. [2022-12-13 13:00:03,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 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 13:00:03,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 13:00:03,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 13:00:03,920 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 504 flow. Second operand 3 states and 1026 transitions. [2022-12-13 13:00:03,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 629 flow [2022-12-13 13:00:04,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 605 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 13:00:04,183 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 416 flow [2022-12-13 13:00:04,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2022-12-13 13:00:04,183 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2022-12-13 13:00:04,183 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 416 flow [2022-12-13 13:00:04,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 13:00:04,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:04,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:04,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 13:00:04,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 13:00:04,387 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 13:00:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash 428117844, now seen corresponding path program 1 times [2022-12-13 13:00:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:04,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789401747] [2022-12-13 13:00:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:00:04,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:04,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789401747] [2022-12-13 13:00:04,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789401747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:04,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780549451] [2022-12-13 13:00:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:04,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:04,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:04,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:04,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:00:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:04,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:00:04,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:00:04,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:00:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:00:04,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780549451] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:00:04,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:00:04,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2022-12-13 13:00:04,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065962530] [2022-12-13 13:00:04,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:00:04,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:00:04,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:00:04,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:00:04,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 836 [2022-12-13 13:00:04,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 416 flow. Second operand has 7 states, 7 states have (on average 331.42857142857144) internal successors, (2320), 7 states have internal predecessors, (2320), 0 states have call successors, (0), 0 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 13:00:04,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:04,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 836 [2022-12-13 13:00:04,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:11,111 INFO L130 PetriNetUnfolder]: 26088/34088 cut-off events. [2022-12-13 13:00:11,111 INFO L131 PetriNetUnfolder]: For 43206/43206 co-relation queries the response was YES. [2022-12-13 13:00:11,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102696 conditions, 34088 events. 26088/34088 cut-off events. For 43206/43206 co-relation queries the response was YES. Maximal size of possible extension queue 1161. Compared 171098 event pairs, 8510 based on Foata normal form. 960/35048 useless extension candidates. Maximal degree in co-relation 102680. Up to 22840 conditions per place. [2022-12-13 13:00:11,298 INFO L137 encePairwiseOnDemand]: 832/836 looper letters, 80 selfloop transitions, 5 changer transitions 4/89 dead transitions. [2022-12-13 13:00:11,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 668 flow [2022-12-13 13:00:11,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:00:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:00:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1670 transitions. [2022-12-13 13:00:11,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2022-12-13 13:00:11,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1670 transitions. [2022-12-13 13:00:11,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1670 transitions. [2022-12-13 13:00:11,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:11,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1670 transitions. [2022-12-13 13:00:11,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 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 13:00:11,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 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 13:00:11,307 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 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 13:00:11,307 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 416 flow. Second operand 5 states and 1670 transitions. [2022-12-13 13:00:11,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 668 flow [2022-12-13 13:00:11,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 650 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 13:00:11,318 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 419 flow [2022-12-13 13:00:11,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2022-12-13 13:00:11,319 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2022-12-13 13:00:11,319 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 419 flow [2022-12-13 13:00:11,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.42857142857144) internal successors, (2320), 7 states have internal predecessors, (2320), 0 states have call successors, (0), 0 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 13:00:11,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:11,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:11,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 13:00:11,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:11,521 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 13:00:11,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1233115913, now seen corresponding path program 1 times [2022-12-13 13:00:11,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:11,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874168860] [2022-12-13 13:00:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:11,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:00:11,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:11,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874168860] [2022-12-13 13:00:11,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874168860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:11,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531603901] [2022-12-13 13:00:11,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:11,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:11,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:11,777 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:11,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:00:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:11,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 13:00:11,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:00:11,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:00:11,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531603901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:11,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:00:11,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-12-13 13:00:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286596047] [2022-12-13 13:00:11,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:11,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:00:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:11,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:00:11,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:00:12,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 836 [2022-12-13 13:00:12,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 419 flow. Second operand has 5 states, 5 states have (on average 324.4) internal successors, (1622), 5 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:00:12,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:12,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 836 [2022-12-13 13:00:12,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:23,375 INFO L130 PetriNetUnfolder]: 45528/59288 cut-off events. [2022-12-13 13:00:23,375 INFO L131 PetriNetUnfolder]: For 121333/121333 co-relation queries the response was YES. [2022-12-13 13:00:23,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183889 conditions, 59288 events. 45528/59288 cut-off events. For 121333/121333 co-relation queries the response was YES. Maximal size of possible extension queue 2107. Compared 313368 event pairs, 9150 based on Foata normal form. 1920/61208 useless extension candidates. Maximal degree in co-relation 183873. Up to 31801 conditions per place. [2022-12-13 13:00:23,630 INFO L137 encePairwiseOnDemand]: 833/836 looper letters, 84 selfloop transitions, 3 changer transitions 6/93 dead transitions. [2022-12-13 13:00:23,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 705 flow [2022-12-13 13:00:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:00:23,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:00:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1335 transitions. [2022-12-13 13:00:23,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39922248803827753 [2022-12-13 13:00:23,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1335 transitions. [2022-12-13 13:00:23,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1335 transitions. [2022-12-13 13:00:23,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:23,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1335 transitions. [2022-12-13 13:00:23,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 333.75) internal successors, (1335), 4 states have internal predecessors, (1335), 0 states have call successors, (0), 0 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 13:00:23,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 13:00:23,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 13:00:23,637 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 419 flow. Second operand 4 states and 1335 transitions. [2022-12-13 13:00:23,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 705 flow [2022-12-13 13:00:23,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 698 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 13:00:23,719 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 432 flow [2022-12-13 13:00:23,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2022-12-13 13:00:23,719 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2022-12-13 13:00:23,719 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 432 flow [2022-12-13 13:00:23,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 324.4) internal successors, (1622), 5 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:00:23,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:23,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:23,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 13:00:23,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 13:00:23,921 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 13:00:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1233115820, now seen corresponding path program 1 times [2022-12-13 13:00:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:23,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795932311] [2022-12-13 13:00:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:23,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:00:24,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:24,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795932311] [2022-12-13 13:00:24,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795932311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:24,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119249556] [2022-12-13 13:00:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:24,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:24,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:24,044 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:24,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:00:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:24,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:00:24,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:00:24,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:00:24,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119249556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:24,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:00:24,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 13:00:24,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284371392] [2022-12-13 13:00:24,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:00:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:24,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:00:24,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:00:24,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 836 [2022-12-13 13:00:24,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 13:00:24,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:24,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 836 [2022-12-13 13:00:24,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:33,314 INFO L130 PetriNetUnfolder]: 31248/41168 cut-off events. [2022-12-13 13:00:33,315 INFO L131 PetriNetUnfolder]: For 73553/73553 co-relation queries the response was YES. [2022-12-13 13:00:33,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120610 conditions, 41168 events. 31248/41168 cut-off events. For 73553/73553 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 221783 event pairs, 22350 based on Foata normal form. 4320/45488 useless extension candidates. Maximal degree in co-relation 120593. Up to 41168 conditions per place. [2022-12-13 13:00:33,447 INFO L137 encePairwiseOnDemand]: 833/836 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2022-12-13 13:00:33,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 533 flow [2022-12-13 13:00:33,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2022-12-13 13:00:33,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40749601275917063 [2022-12-13 13:00:33,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2022-12-13 13:00:33,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2022-12-13 13:00:33,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:33,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2022-12-13 13:00:33,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 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 13:00:33,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 13:00:33,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 13:00:33,454 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 432 flow. Second operand 3 states and 1022 transitions. [2022-12-13 13:00:33,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 533 flow [2022-12-13 13:00:33,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 502 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-12-13 13:00:33,561 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2022-12-13 13:00:33,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2022-12-13 13:00:33,561 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2022-12-13 13:00:33,561 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2022-12-13 13:00:33,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 13:00:33,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 60 remaining) [2022-12-13 13:00:33,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 60 remaining) [2022-12-13 13:00:33,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 60 remaining) [2022-12-13 13:00:33,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 60 remaining) [2022-12-13 13:00:33,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 60 remaining) [2022-12-13 13:00:33,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 60 remaining) [2022-12-13 13:00:33,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 60 remaining) [2022-12-13 13:00:33,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:00:33,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 13:00:33,770 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:33,784 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:00:33,784 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:00:33,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:00:33 BasicIcfg [2022-12-13 13:00:33,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:00:33,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:00:33,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:00:33,794 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:00:33,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:56:20" (3/4) ... [2022-12-13 13:00:33,801 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:00:33,809 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 13:00:33,810 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 13:00:33,810 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 13:00:33,810 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-12-13 13:00:33,816 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2022-12-13 13:00:33,817 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 13:00:33,817 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 13:00:33,817 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:00:33,849 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:00:33,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:00:33,850 INFO L158 Benchmark]: Toolchain (without parser) took 254691.93ms. Allocated memory was 163.6MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 124.5MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2022-12-13 13:00:33,850 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 163.6MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:00:33,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.63ms. Allocated memory is still 163.6MB. Free memory was 123.9MB in the beginning and 107.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 13:00:33,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.01ms. Allocated memory is still 163.6MB. Free memory was 107.1MB in the beginning and 103.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:00:33,850 INFO L158 Benchmark]: Boogie Preprocessor took 40.72ms. Allocated memory is still 163.6MB. Free memory was 103.9MB in the beginning and 100.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:00:33,851 INFO L158 Benchmark]: RCFGBuilder took 867.75ms. Allocated memory was 163.6MB in the beginning and 216.0MB in the end (delta: 52.4MB). Free memory was 100.8MB in the beginning and 151.6MB in the end (delta: -50.7MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2022-12-13 13:00:33,851 INFO L158 Benchmark]: TraceAbstraction took 253413.32ms. Allocated memory was 216.0MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 151.6MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 5.6GB. Max. memory is 16.1GB. [2022-12-13 13:00:33,851 INFO L158 Benchmark]: Witness Printer took 55.98ms. Allocated memory is still 7.4GB. Free memory was 3.6GB in the beginning and 3.6GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:00:33,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 163.6MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.63ms. Allocated memory is still 163.6MB. Free memory was 123.9MB in the beginning and 107.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.01ms. Allocated memory is still 163.6MB. Free memory was 107.1MB in the beginning and 103.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.72ms. Allocated memory is still 163.6MB. Free memory was 103.9MB in the beginning and 100.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 867.75ms. Allocated memory was 163.6MB in the beginning and 216.0MB in the end (delta: 52.4MB). Free memory was 100.8MB in the beginning and 151.6MB in the end (delta: -50.7MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * TraceAbstraction took 253413.32ms. Allocated memory was 216.0MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 151.6MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 5.6GB. Max. memory is 16.1GB. * Witness Printer took 55.98ms. Allocated memory is still 7.4GB. Free memory was 3.6GB in the beginning and 3.6GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.6s, 345 PlacesBefore, 68 PlacesAfterwards, 368 TransitionsBefore, 63 TransitionsAfterwards, 8592 CoEnabledTransitionPairs, 8 FixpointIterations, 237 TrivialSequentialCompositions, 122 ConcurrentSequentialCompositions, 41 TrivialYvCompositions, 13 ConcurrentYvCompositions, 28 ChoiceCompositions, 441 TotalNumberOfCompositions, 10953 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10338, independent: 10315, independent conditional: 0, independent unconditional: 10315, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4103, independent: 4094, independent conditional: 0, independent unconditional: 4094, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10338, independent: 6221, independent conditional: 0, independent unconditional: 6221, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 4103, unknown conditional: 0, unknown unconditional: 4103] , Statistics on independence cache: Total cache size (in pairs): 204, Positive cache size: 201, Positive conditional cache size: 0, Positive unconditional cache size: 201, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 129]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 129]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 136]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 136]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 151]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 151]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 435 locations, 60 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 253.3s, OverallIterations: 27, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 231.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3080 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2232 mSDsluCounter, 1096 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 696 mSDsCounter, 346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4049 IncrementalHoareTripleChecker+Invalid, 4395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 346 mSolverCounterUnsat, 400 mSDtfsCounter, 4049 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=529occurred in iteration=22, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 474 NumberOfCodeBlocks, 470 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 470 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 SizeOfPredicates, 67 NumberOfNonLiveVariables, 3825 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 42 InterpolantComputations, 24 PerfectInterpolantSequences, 48/75 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 13:00:33,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a567625-4842-4da4-a1f9-75de2ce19c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE