./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/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_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/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_dfcdd439-a882-4938-ae71-5fdc80e2487c/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 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:31:39,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:31:39,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:31:39,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:31:39,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:31:39,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:31:39,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:31:39,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:31:39,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:31:39,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:31:39,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:31:39,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:31:39,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:31:39,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:31:39,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:31:39,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:31:39,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:31:39,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:31:39,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:31:39,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:31:39,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:31:39,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:31:39,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:31:39,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:31:39,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:31:39,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:31:39,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:31:39,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:31:39,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:31:39,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:31:39,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:31:39,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:31:39,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:31:39,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:31:39,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:31:39,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:31:39,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:31:39,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:31:39,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:31:39,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:31:39,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:31:39,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:31:39,243 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:31:39,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:31:39,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:31:39,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:31:39,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:31:39,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:31:39,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:31:39,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:31:39,245 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:31:39,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:31:39,246 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:31:39,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:31:39,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:31:39,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:31:39,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:31:39,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:31:39,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:31:39,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:31:39,247 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:31:39,248 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:31:39,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:31:39,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:31:39,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:31:39,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:31:39,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:31:39,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:31:39,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:31:39,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:31:39,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:31:39,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:31:39,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:31:39,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:31:39,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:31:39,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:31:39,250 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:31:39,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:31:39,251 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:31:39,251 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_dfcdd439-a882-4938-ae71-5fdc80e2487c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c [2022-12-13 20:31:39,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:31:39,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:31:39,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:31:39,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:31:39,477 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:31:39,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2022-12-13 20:31:41,979 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:31:42,160 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:31:42,161 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2022-12-13 20:31:42,167 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/data/356b9e01b/07afc9f5a2be4ce3aac8ddbf38c4a524/FLAG1673ad1af [2022-12-13 20:31:42,181 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/data/356b9e01b/07afc9f5a2be4ce3aac8ddbf38c4a524 [2022-12-13 20:31:42,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:31:42,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:31:42,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:31:42,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:31:42,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:31:42,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9cbbe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42, skipping insertion in model container [2022-12-13 20:31:42,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:31:42,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:31:42,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:31:42,339 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:31:42,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:31:42,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:31:42,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:31:42,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:31:42,354 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_dfcdd439-a882-4938-ae71-5fdc80e2487c/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-12-13 20:31:42,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:31:42,369 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:31:42,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:31:42,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:31:42,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:31:42,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:31:42,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:31:42,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:31:42,392 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_dfcdd439-a882-4938-ae71-5fdc80e2487c/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-12-13 20:31:42,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:31:42,408 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:31:42,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42 WrapperNode [2022-12-13 20:31:42,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:31:42,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:31:42,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:31:42,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:31:42,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,442 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-12-13 20:31:42,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:31:42,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:31:42,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:31:42,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:31:42,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,462 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:31:42,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:31:42,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:31:42,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:31:42,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (1/1) ... [2022-12-13 20:31:42,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:31:42,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:31:42,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:31:42,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:31:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:31:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 20:31:42,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 20:31:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 20:31:42,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 20:31:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 20:31:42,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 20:31:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:31:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:31:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:31:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 20:31:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 20:31:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:31:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:31:42,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:31:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:31:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:31:42,525 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:31:42,608 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:31:42,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:31:42,829 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:31:42,871 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:31:42,871 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 20:31:42,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:31:42 BoogieIcfgContainer [2022-12-13 20:31:42,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:31:42,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:31:42,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:31:42,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:31:42,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:31:42" (1/3) ... [2022-12-13 20:31:42,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5691e662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:31:42, skipping insertion in model container [2022-12-13 20:31:42,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:31:42" (2/3) ... [2022-12-13 20:31:42,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5691e662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:31:42, skipping insertion in model container [2022-12-13 20:31:42,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:31:42" (3/3) ... [2022-12-13 20:31:42,880 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2022-12-13 20:31:42,887 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:31:42,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:31:42,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 20:31:42,895 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:31:42,952 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:31:42,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 362 flow [2022-12-13 20:31:43,034 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2022-12-13 20:31:43,035 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 20:31:43,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 12/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-12-13 20:31:43,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 362 flow [2022-12-13 20:31:43,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 145 transitions, 305 flow [2022-12-13 20:31:43,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:31:43,053 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 145 transitions, 305 flow [2022-12-13 20:31:43,055 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 145 transitions, 305 flow [2022-12-13 20:31:43,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 145 transitions, 305 flow [2022-12-13 20:31:43,079 INFO L130 PetriNetUnfolder]: 11/145 cut-off events. [2022-12-13 20:31:43,080 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:31:43,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 145 events. 11/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 135 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-12-13 20:31:43,082 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2022-12-13 20:31:47,528 INFO L134 LiptonReduction]: Checked pairs total: 2491 [2022-12-13 20:31:47,528 INFO L136 LiptonReduction]: Total number of compositions: 153 [2022-12-13 20:31:47,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:31:47,548 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;@2a52f6a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:31:47,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 20:31:47,550 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 20:31:47,550 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:31:47,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:47,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 20:31:47,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash 21538, now seen corresponding path program 1 times [2022-12-13 20:31:47,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:47,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816140329] [2022-12-13 20:31:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:47,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:47,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816140329] [2022-12-13 20:31:47,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816140329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:31:47,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:31:47,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:31:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143975635] [2022-12-13 20:31:47,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:31:47,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:31:47,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:47,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:31:47,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:31:47,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 322 [2022-12-13 20:31:47,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:47,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:47,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 322 [2022-12-13 20:31:47,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:48,185 INFO L130 PetriNetUnfolder]: 2481/3227 cut-off events. [2022-12-13 20:31:48,185 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-12-13 20:31:48,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 3227 events. 2481/3227 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13697 event pairs, 1163 based on Foata normal form. 0/1172 useless extension candidates. Maximal degree in co-relation 2828. Up to 1610 conditions per place. [2022-12-13 20:31:48,209 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 20:31:48,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2022-12-13 20:31:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:31:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:31:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-12-13 20:31:48,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2022-12-13 20:31:48,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-12-13 20:31:48,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-12-13 20:31:48,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:48,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-12-13 20:31:48,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,242 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 497 transitions. [2022-12-13 20:31:48,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2022-12-13 20:31:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 20:31:48,252 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2022-12-13 20:31:48,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2022-12-13 20:31:48,258 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-12-13 20:31:48,258 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2022-12-13 20:31:48,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:48,259 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:31:48,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:31:48,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash 669190, now seen corresponding path program 1 times [2022-12-13 20:31:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:48,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280673382] [2022-12-13 20:31:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:48,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:48,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280673382] [2022-12-13 20:31:48,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280673382] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:31:48,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054233876] [2022-12-13 20:31:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:48,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:48,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:31:48,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:31:48,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:31:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:48,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:31:48,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:31:48,437 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 20:31:48,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:31:48,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054233876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:31:48,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:31:48,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 20:31:48,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739010102] [2022-12-13 20:31:48,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:31:48,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:31:48,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:31:48,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:31:48,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 322 [2022-12-13 20:31:48,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:48,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 322 [2022-12-13 20:31:48,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:48,776 INFO L130 PetriNetUnfolder]: 2481/3226 cut-off events. [2022-12-13 20:31:48,776 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 20:31:48,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 3226 events. 2481/3226 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13678 event pairs, 1163 based on Foata normal form. 0/1174 useless extension candidates. Maximal degree in co-relation 3300. Up to 1610 conditions per place. [2022-12-13 20:31:48,797 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-12-13 20:31:48,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 228 flow [2022-12-13 20:31:48,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:31:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:31:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2022-12-13 20:31:48,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49922360248447206 [2022-12-13 20:31:48,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2022-12-13 20:31:48,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2022-12-13 20:31:48,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:48,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2022-12-13 20:31:48,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,804 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 4 states and 643 transitions. [2022-12-13 20:31:48,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 228 flow [2022-12-13 20:31:48,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:31:48,805 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 78 flow [2022-12-13 20:31:48,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-12-13 20:31:48,806 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-12-13 20:31:48,806 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 78 flow [2022-12-13 20:31:48,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:48,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:48,806 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:31:48,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:31:49,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:49,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash 669202, now seen corresponding path program 1 times [2022-12-13 20:31:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:49,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041404232] [2022-12-13 20:31:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:49,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:49,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041404232] [2022-12-13 20:31:49,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041404232] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:31:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610830675] [2022-12-13 20:31:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:49,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:49,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:31:49,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:31:49,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:31:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:49,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:31:49,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:31:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:49,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:31:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:49,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610830675] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:31:49,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:31:49,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 20:31:49,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236921255] [2022-12-13 20:31:49,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:31:49,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:31:49,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:49,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:31:49,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:31:49,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 322 [2022-12-13 20:31:49,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:49,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:49,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 322 [2022-12-13 20:31:49,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:49,894 INFO L130 PetriNetUnfolder]: 6129/7990 cut-off events. [2022-12-13 20:31:49,894 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-13 20:31:49,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16123 conditions, 7990 events. 6129/7990 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 38195 event pairs, 2894 based on Foata normal form. 0/2923 useless extension candidates. Maximal degree in co-relation 12811. Up to 1610 conditions per place. [2022-12-13 20:31:49,924 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2022-12-13 20:31:49,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 125 transitions, 542 flow [2022-12-13 20:31:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:31:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:31:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1013 transitions. [2022-12-13 20:31:49,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5243271221532091 [2022-12-13 20:31:49,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1013 transitions. [2022-12-13 20:31:49,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1013 transitions. [2022-12-13 20:31:49,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:49,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1013 transitions. [2022-12-13 20:31:49,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.83333333333334) internal successors, (1013), 6 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:49,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:49,935 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:49,935 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 78 flow. Second operand 6 states and 1013 transitions. [2022-12-13 20:31:49,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 125 transitions, 542 flow [2022-12-13 20:31:49,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:31:49,936 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2022-12-13 20:31:49,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2022-12-13 20:31:49,937 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-13 20:31:49,937 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2022-12-13 20:31:49,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:49,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:49,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:31:49,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:31:50,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 20:31:50,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:50,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:50,139 INFO L85 PathProgramCache]: Analyzing trace with hash 642955955, now seen corresponding path program 1 times [2022-12-13 20:31:50,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:50,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841907510] [2022-12-13 20:31:50,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:50,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:50,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841907510] [2022-12-13 20:31:50,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841907510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:31:50,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:31:50,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:31:50,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475926665] [2022-12-13 20:31:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:31:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:31:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:31:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:31:50,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:31:50,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:50,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:50,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:31:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:51,130 INFO L130 PetriNetUnfolder]: 8556/11337 cut-off events. [2022-12-13 20:31:51,131 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 20:31:51,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22981 conditions, 11337 events. 8556/11337 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 60847 event pairs, 2975 based on Foata normal form. 0/4612 useless extension candidates. Maximal degree in co-relation 18377. Up to 7323 conditions per place. [2022-12-13 20:31:51,170 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-12-13 20:31:51,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2022-12-13 20:31:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:31:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:31:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2022-12-13 20:31:51,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2022-12-13 20:31:51,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2022-12-13 20:31:51,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2022-12-13 20:31:51,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:51,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2022-12-13 20:31:51,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:51,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:51,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:51,177 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 495 transitions. [2022-12-13 20:31:51,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2022-12-13 20:31:51,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 20:31:51,179 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2022-12-13 20:31:51,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-12-13 20:31:51,180 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-13 20:31:51,180 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2022-12-13 20:31:51,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:51,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:51,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:31:51,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:31:51,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:51,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1543200831, now seen corresponding path program 1 times [2022-12-13 20:31:51,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:51,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755360829] [2022-12-13 20:31:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:51,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:51,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:51,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755360829] [2022-12-13 20:31:51,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755360829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:31:51,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664756920] [2022-12-13 20:31:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:51,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:51,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:31:51,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:31:51,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:31:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:51,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:31:51,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:31:51,329 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 20:31:51,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:31:51,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664756920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:31:51,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:31:51,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-12-13 20:31:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960596556] [2022-12-13 20:31:51,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:31:51,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:31:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:51,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:31:51,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:31:51,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 322 [2022-12-13 20:31:51,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:51,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:51,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 322 [2022-12-13 20:31:51,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:51,992 INFO L130 PetriNetUnfolder]: 6597/8823 cut-off events. [2022-12-13 20:31:51,992 INFO L131 PetriNetUnfolder]: For 1163/1163 co-relation queries the response was YES. [2022-12-13 20:31:51,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19219 conditions, 8823 events. 6597/8823 cut-off events. For 1163/1163 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 46020 event pairs, 3596 based on Foata normal form. 1/4068 useless extension candidates. Maximal degree in co-relation 19202. Up to 8691 conditions per place. [2022-12-13 20:31:52,025 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 30 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2022-12-13 20:31:52,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 181 flow [2022-12-13 20:31:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:31:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:31:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2022-12-13 20:31:52,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2022-12-13 20:31:52,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2022-12-13 20:31:52,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2022-12-13 20:31:52,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:52,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2022-12-13 20:31:52,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,031 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 455 transitions. [2022-12-13 20:31:52,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 181 flow [2022-12-13 20:31:52,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 177 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 20:31:52,033 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 121 flow [2022-12-13 20:31:52,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2022-12-13 20:31:52,034 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-12-13 20:31:52,034 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 121 flow [2022-12-13 20:31:52,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:52,035 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 20:31:52,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:31:52,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:52,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1537495762, now seen corresponding path program 2 times [2022-12-13 20:31:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:52,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612697800] [2022-12-13 20:31:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:52,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:52,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612697800] [2022-12-13 20:31:52,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612697800] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:31:52,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742426325] [2022-12-13 20:31:52,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:31:52,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:52,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:31:52,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:31:52,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:31:52,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:31:52,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:31:52,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:31:52,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:31:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 20:31:52,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:31:52,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742426325] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:31:52,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:31:52,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 20:31:52,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43796794] [2022-12-13 20:31:52,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:31:52,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:31:52,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:52,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:31:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:31:52,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:31:52,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:52,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:31:52,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:52,954 INFO L130 PetriNetUnfolder]: 5861/7842 cut-off events. [2022-12-13 20:31:52,954 INFO L131 PetriNetUnfolder]: For 492/716 co-relation queries the response was YES. [2022-12-13 20:31:52,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16780 conditions, 7842 events. 5861/7842 cut-off events. For 492/716 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 40820 event pairs, 3152 based on Foata normal form. 225/3771 useless extension candidates. Maximal degree in co-relation 16760. Up to 7726 conditions per place. [2022-12-13 20:31:52,975 INFO L137 encePairwiseOnDemand]: 320/322 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 20:31:52,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 33 transitions, 171 flow [2022-12-13 20:31:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:31:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:31:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2022-12-13 20:31:52,976 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.489648033126294 [2022-12-13 20:31:52,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2022-12-13 20:31:52,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2022-12-13 20:31:52,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:52,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2022-12-13 20:31:52,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,980 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 121 flow. Second operand 3 states and 473 transitions. [2022-12-13 20:31:52,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 33 transitions, 171 flow [2022-12-13 20:31:52,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 157 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-12-13 20:31:52,981 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 99 flow [2022-12-13 20:31:52,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2022-12-13 20:31:52,981 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-12-13 20:31:52,981 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 99 flow [2022-12-13 20:31:52,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:52,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:52,982 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:31:52,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:31:53,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:31:53,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash -423432301, now seen corresponding path program 1 times [2022-12-13 20:31:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:53,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704048004] [2022-12-13 20:31:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:53,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:31:53,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:53,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704048004] [2022-12-13 20:31:53,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704048004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:31:53,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971868243] [2022-12-13 20:31:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:53,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:31:53,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:31:53,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:31:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:53,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:31:53,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:31:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:53,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:31:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:31:53,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971868243] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:31:53,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:31:53,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-12-13 20:31:53,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858274041] [2022-12-13 20:31:53,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:31:53,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 20:31:53,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 20:31:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:31:53,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 322 [2022-12-13 20:31:53,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 99 flow. Second operand has 13 states, 13 states have (on average 140.53846153846155) internal successors, (1827), 13 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:53,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:53,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 322 [2022-12-13 20:31:53,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:54,345 INFO L130 PetriNetUnfolder]: 5704/7545 cut-off events. [2022-12-13 20:31:54,345 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2022-12-13 20:31:54,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16167 conditions, 7545 events. 5704/7545 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 38325 event pairs, 324 based on Foata normal form. 52/3768 useless extension candidates. Maximal degree in co-relation 16157. Up to 1836 conditions per place. [2022-12-13 20:31:54,368 INFO L137 encePairwiseOnDemand]: 313/322 looper letters, 137 selfloop transitions, 11 changer transitions 0/150 dead transitions. [2022-12-13 20:31:54,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 150 transitions, 664 flow [2022-12-13 20:31:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:31:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:31:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1823 transitions. [2022-12-13 20:31:54,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47179089026915116 [2022-12-13 20:31:54,372 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1823 transitions. [2022-12-13 20:31:54,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1823 transitions. [2022-12-13 20:31:54,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:54,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1823 transitions. [2022-12-13 20:31:54,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 151.91666666666666) internal successors, (1823), 12 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:54,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 322.0) internal successors, (4186), 13 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:54,380 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 322.0) internal successors, (4186), 13 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:54,380 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 99 flow. Second operand 12 states and 1823 transitions. [2022-12-13 20:31:54,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 150 transitions, 664 flow [2022-12-13 20:31:54,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 150 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:31:54,383 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 163 flow [2022-12-13 20:31:54,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2022-12-13 20:31:54,383 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-12-13 20:31:54,383 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 163 flow [2022-12-13 20:31:54,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 140.53846153846155) internal successors, (1827), 13 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:54,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:54,384 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 20:31:54,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:31:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 20:31:54,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:54,585 INFO L85 PathProgramCache]: Analyzing trace with hash -70345663, now seen corresponding path program 1 times [2022-12-13 20:31:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:54,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578953254] [2022-12-13 20:31:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:54,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:31:54,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:54,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578953254] [2022-12-13 20:31:54,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578953254] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:31:54,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303336945] [2022-12-13 20:31:54,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:54,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:31:54,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:31:54,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:31:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:54,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:31:54,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:31:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:31:54,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:31:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:31:54,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303336945] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:31:54,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:31:54,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 20:31:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601530992] [2022-12-13 20:31:54,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:31:54,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:31:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:31:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:31:54,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:31:54,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 150.71428571428572) internal successors, (1055), 7 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:54,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:54,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:31:54,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:55,904 INFO L130 PetriNetUnfolder]: 11020/14517 cut-off events. [2022-12-13 20:31:55,904 INFO L131 PetriNetUnfolder]: For 15118/15120 co-relation queries the response was YES. [2022-12-13 20:31:55,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37974 conditions, 14517 events. 11020/14517 cut-off events. For 15118/15120 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 77571 event pairs, 1215 based on Foata normal form. 2/8104 useless extension candidates. Maximal degree in co-relation 37957. Up to 3939 conditions per place. [2022-12-13 20:31:55,960 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 103 selfloop transitions, 7 changer transitions 0/112 dead transitions. [2022-12-13 20:31:55,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 112 transitions, 609 flow [2022-12-13 20:31:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:31:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:31:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 998 transitions. [2022-12-13 20:31:55,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5165631469979296 [2022-12-13 20:31:55,963 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 998 transitions. [2022-12-13 20:31:55,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 998 transitions. [2022-12-13 20:31:55,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:55,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 998 transitions. [2022-12-13 20:31:55,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 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 20:31:55,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:55,968 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:55,968 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 163 flow. Second operand 6 states and 998 transitions. [2022-12-13 20:31:55,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 112 transitions, 609 flow [2022-12-13 20:31:55,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 112 transitions, 593 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 20:31:55,989 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 194 flow [2022-12-13 20:31:55,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2022-12-13 20:31:55,989 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-12-13 20:31:55,989 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 194 flow [2022-12-13 20:31:55,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.71428571428572) internal successors, (1055), 7 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:55,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:55,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:31:55,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:31:56,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 20:31:56,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:56,192 INFO L85 PathProgramCache]: Analyzing trace with hash -236394405, now seen corresponding path program 1 times [2022-12-13 20:31:56,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:56,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447380598] [2022-12-13 20:31:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:56,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:31:56,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:56,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447380598] [2022-12-13 20:31:56,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447380598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:31:56,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:31:56,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:31:56,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017994686] [2022-12-13 20:31:56,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:31:56,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:31:56,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:56,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:31:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:31:56,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:31:56,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:56,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:56,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:31:56,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:31:57,474 INFO L130 PetriNetUnfolder]: 11908/16541 cut-off events. [2022-12-13 20:31:57,475 INFO L131 PetriNetUnfolder]: For 32176/32847 co-relation queries the response was YES. [2022-12-13 20:31:57,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47153 conditions, 16541 events. 11908/16541 cut-off events. For 32176/32847 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 102500 event pairs, 5537 based on Foata normal form. 656/11629 useless extension candidates. Maximal degree in co-relation 47133. Up to 11568 conditions per place. [2022-12-13 20:31:57,549 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 60 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2022-12-13 20:31:57,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 440 flow [2022-12-13 20:31:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:31:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:31:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2022-12-13 20:31:57,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2022-12-13 20:31:57,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2022-12-13 20:31:57,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2022-12-13 20:31:57,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:31:57,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2022-12-13 20:31:57,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:57,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:57,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:57,554 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 194 flow. Second operand 3 states and 490 transitions. [2022-12-13 20:31:57,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 440 flow [2022-12-13 20:31:57,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 422 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 20:31:57,588 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 198 flow [2022-12-13 20:31:57,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2022-12-13 20:31:57,589 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-12-13 20:31:57,589 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 198 flow [2022-12-13 20:31:57,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:31:57,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:31:57,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:31:57,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:31:57,589 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:31:57,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:31:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1261709080, now seen corresponding path program 1 times [2022-12-13 20:31:57,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:31:57,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276114282] [2022-12-13 20:31:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:31:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:31:57,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:31:57,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276114282] [2022-12-13 20:31:57,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276114282] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:31:57,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340197158] [2022-12-13 20:31:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:31:57,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:31:57,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:31:57,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:31:57,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:31:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:31:57,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:31:57,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:31:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:31:57,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:31:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:31:57,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340197158] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:31:57,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:31:57,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 20:31:57,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099833591] [2022-12-13 20:31:57,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:31:57,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:31:57,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:31:57,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:31:57,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:31:57,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:31:57,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 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 20:31:57,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:31:57,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:31:57,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:32:00,394 INFO L130 PetriNetUnfolder]: 24448/33191 cut-off events. [2022-12-13 20:32:00,395 INFO L131 PetriNetUnfolder]: For 65083/66330 co-relation queries the response was YES. [2022-12-13 20:32:00,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98573 conditions, 33191 events. 24448/33191 cut-off events. For 65083/66330 co-relation queries the response was YES. Maximal size of possible extension queue 1753. Compared 213107 event pairs, 4340 based on Foata normal form. 1232/25231 useless extension candidates. Maximal degree in co-relation 98551. Up to 9325 conditions per place. [2022-12-13 20:32:00,568 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 148 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2022-12-13 20:32:00,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 160 transitions, 1089 flow [2022-12-13 20:32:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:32:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:32:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1150 transitions. [2022-12-13 20:32:00,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2022-12-13 20:32:00,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1150 transitions. [2022-12-13 20:32:00,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1150 transitions. [2022-12-13 20:32:00,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:32:00,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1150 transitions. [2022-12-13 20:32:00,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.28571428571428) internal successors, (1150), 7 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:00,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 322.0) internal successors, (2576), 8 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:00,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 322.0) internal successors, (2576), 8 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:00,582 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 198 flow. Second operand 7 states and 1150 transitions. [2022-12-13 20:32:00,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 160 transitions, 1089 flow [2022-12-13 20:32:00,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1087 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:32:00,608 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 255 flow [2022-12-13 20:32:00,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2022-12-13 20:32:00,608 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-12-13 20:32:00,608 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 255 flow [2022-12-13 20:32:00,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 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 20:32:00,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:32:00,609 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:32:00,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:32:00,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:32:00,811 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:32:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:32:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash 458276841, now seen corresponding path program 1 times [2022-12-13 20:32:00,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:32:00,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965759141] [2022-12-13 20:32:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:32:00,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:32:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:32:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:32:00,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:32:00,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965759141] [2022-12-13 20:32:00,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965759141] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:32:00,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856222776] [2022-12-13 20:32:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:32:00,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:32:00,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:32:00,898 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:32:00,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:32:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:32:00,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:32:00,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:32:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:32:00,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:32:00,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856222776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:32:00,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:32:00,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-12-13 20:32:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285243892] [2022-12-13 20:32:00,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:32:00,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:32:00,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:32:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:32:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:32:00,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:32:00,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:00,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:32:00,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:32:00,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:32:03,403 INFO L130 PetriNetUnfolder]: 21169/29310 cut-off events. [2022-12-13 20:32:03,403 INFO L131 PetriNetUnfolder]: For 63420/64574 co-relation queries the response was YES. [2022-12-13 20:32:03,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93370 conditions, 29310 events. 21169/29310 cut-off events. For 63420/64574 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 193053 event pairs, 1178 based on Foata normal form. 2349/25827 useless extension candidates. Maximal degree in co-relation 93345. Up to 17711 conditions per place. [2022-12-13 20:32:03,542 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 104 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2022-12-13 20:32:03,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 771 flow [2022-12-13 20:32:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:32:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:32:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2022-12-13 20:32:03,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2022-12-13 20:32:03,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2022-12-13 20:32:03,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2022-12-13 20:32:03,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:32:03,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2022-12-13 20:32:03,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:03,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:03,547 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:03,547 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 255 flow. Second operand 5 states and 815 transitions. [2022-12-13 20:32:03,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 771 flow [2022-12-13 20:32:03,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 110 transitions, 763 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 20:32:03,745 INFO L231 Difference]: Finished difference. Result has 71 places, 44 transitions, 226 flow [2022-12-13 20:32:03,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=71, PETRI_TRANSITIONS=44} [2022-12-13 20:32:03,745 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2022-12-13 20:32:03,745 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 44 transitions, 226 flow [2022-12-13 20:32:03,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:03,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:32:03,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:32:03,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:32:03,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:32:03,948 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:32:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:32:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash 463026124, now seen corresponding path program 1 times [2022-12-13 20:32:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:32:03,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268303774] [2022-12-13 20:32:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:32:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:32:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:32:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:32:04,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:32:04,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268303774] [2022-12-13 20:32:04,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268303774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:32:04,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:32:04,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:32:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811012291] [2022-12-13 20:32:04,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:32:04,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:32:04,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:32:04,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:32:04,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:32:04,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 322 [2022-12-13 20:32:04,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 44 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:04,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:32:04,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 322 [2022-12-13 20:32:04,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:32:05,546 INFO L130 PetriNetUnfolder]: 12939/19132 cut-off events. [2022-12-13 20:32:05,546 INFO L131 PetriNetUnfolder]: For 42526/44324 co-relation queries the response was YES. [2022-12-13 20:32:05,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60899 conditions, 19132 events. 12939/19132 cut-off events. For 42526/44324 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 127735 event pairs, 2935 based on Foata normal form. 1798/19540 useless extension candidates. Maximal degree in co-relation 60873. Up to 13605 conditions per place. [2022-12-13 20:32:05,637 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 61 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-12-13 20:32:05,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 481 flow [2022-12-13 20:32:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:32:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:32:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-12-13 20:32:05,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2022-12-13 20:32:05,640 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-12-13 20:32:05,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-12-13 20:32:05,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:32:05,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-12-13 20:32:05,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:05,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:05,643 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:05,643 INFO L175 Difference]: Start difference. First operand has 71 places, 44 transitions, 226 flow. Second operand 4 states and 623 transitions. [2022-12-13 20:32:05,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 481 flow [2022-12-13 20:32:05,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 473 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:32:05,680 INFO L231 Difference]: Finished difference. Result has 70 places, 43 transitions, 223 flow [2022-12-13 20:32:05,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=70, PETRI_TRANSITIONS=43} [2022-12-13 20:32:05,680 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-12-13 20:32:05,680 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 43 transitions, 223 flow [2022-12-13 20:32:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:05,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:32:05,681 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:32:05,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:32:05,681 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:32:05,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:32:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 891614659, now seen corresponding path program 1 times [2022-12-13 20:32:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:32:05,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200174244] [2022-12-13 20:32:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:32:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:32:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:32:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:32:05,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:32:05,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200174244] [2022-12-13 20:32:05,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200174244] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:32:05,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728870794] [2022-12-13 20:32:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:32:05,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:32:05,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:32:05,768 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:32:05,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:32:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:32:05,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:32:05,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:32:05,844 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 20:32:05,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:32:05,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728870794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:32:05,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:32:05,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-13 20:32:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498090093] [2022-12-13 20:32:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:32:05,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:32:05,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:32:05,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:32:05,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:32:05,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:32:05,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 43 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:05,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:32:05,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:32:05,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:32:07,830 INFO L130 PetriNetUnfolder]: 10852/15569 cut-off events. [2022-12-13 20:32:07,830 INFO L131 PetriNetUnfolder]: For 47766/49164 co-relation queries the response was YES. [2022-12-13 20:32:07,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43018 conditions, 15569 events. 10852/15569 cut-off events. For 47766/49164 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 99278 event pairs, 7689 based on Foata normal form. 3533/16521 useless extension candidates. Maximal degree in co-relation 42991. Up to 15487 conditions per place. [2022-12-13 20:32:07,875 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 33 selfloop transitions, 1 changer transitions 3/41 dead transitions. [2022-12-13 20:32:07,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 41 transitions, 273 flow [2022-12-13 20:32:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:32:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:32:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2022-12-13 20:32:07,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2022-12-13 20:32:07,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2022-12-13 20:32:07,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2022-12-13 20:32:07,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:32:07,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2022-12-13 20:32:07,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:07,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:07,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:07,880 INFO L175 Difference]: Start difference. First operand has 70 places, 43 transitions, 223 flow. Second operand 3 states and 469 transitions. [2022-12-13 20:32:07,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 41 transitions, 273 flow [2022-12-13 20:32:07,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 41 transitions, 244 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-12-13 20:32:07,901 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 165 flow [2022-12-13 20:32:07,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2022-12-13 20:32:07,902 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-12-13 20:32:07,902 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 165 flow [2022-12-13 20:32:07,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:07,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:32:07,902 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:32:07,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 20:32:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:32:08,104 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:32:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:32:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1977536613, now seen corresponding path program 2 times [2022-12-13 20:32:08,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:32:08,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628062397] [2022-12-13 20:32:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:32:08,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:32:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:32:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:32:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:32:08,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628062397] [2022-12-13 20:32:08,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628062397] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:32:08,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926058765] [2022-12-13 20:32:08,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:32:08,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:32:08,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:32:08,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:32:08,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 20:32:08,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:32:08,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:32:08,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:32:08,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:32:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 20:32:08,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:32:08,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926058765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:32:08,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:32:08,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 20:32:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065919347] [2022-12-13 20:32:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:32:08,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:32:08,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:32:08,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:32:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:32:08,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:32:08,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:08,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:32:08,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:32:08,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:32:08,803 INFO L130 PetriNetUnfolder]: 4617/6580 cut-off events. [2022-12-13 20:32:08,803 INFO L131 PetriNetUnfolder]: For 7954/8761 co-relation queries the response was YES. [2022-12-13 20:32:08,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19038 conditions, 6580 events. 4617/6580 cut-off events. For 7954/8761 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 36039 event pairs, 3140 based on Foata normal form. 1181/6760 useless extension candidates. Maximal degree in co-relation 19019. Up to 6520 conditions per place. [2022-12-13 20:32:08,815 INFO L137 encePairwiseOnDemand]: 320/322 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2022-12-13 20:32:08,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 37 transitions, 221 flow [2022-12-13 20:32:08,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:32:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:32:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2022-12-13 20:32:08,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4803312629399586 [2022-12-13 20:32:08,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2022-12-13 20:32:08,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2022-12-13 20:32:08,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:32:08,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2022-12-13 20:32:08,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:08,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:08,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:08,818 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 165 flow. Second operand 3 states and 464 transitions. [2022-12-13 20:32:08,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 37 transitions, 221 flow [2022-12-13 20:32:08,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 37 transitions, 202 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 20:32:08,838 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2022-12-13 20:32:08,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2022-12-13 20:32:08,838 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2022-12-13 20:32:08,838 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2022-12-13 20:32:08,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:32:08,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-12-13 20:32:08,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 20:32:08,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 20:32:08,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 20:32:08,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 20:32:08,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 20:32:08,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 20:32:08,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 20:32:08,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 20:32:09,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:32:09,043 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:32:09,057 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:32:09,057 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:32:09,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:32:09 BasicIcfg [2022-12-13 20:32:09,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:32:09,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:32:09,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:32:09,067 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:32:09,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:31:42" (3/4) ... [2022-12-13 20:32:09,074 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:32:09,084 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 20:32:09,084 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 20:32:09,084 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 20:32:09,089 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-13 20:32:09,089 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 20:32:09,089 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 20:32:09,090 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 20:32:09,115 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:32:09,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:32:09,115 INFO L158 Benchmark]: Toolchain (without parser) took 26931.05ms. Allocated memory was 127.9MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 94.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-12-13 20:32:09,116 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 91.5MB in the beginning and 91.5MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:32:09,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.72ms. Allocated memory is still 127.9MB. Free memory was 94.2MB in the beginning and 82.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:32:09,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.46ms. Allocated memory is still 127.9MB. Free memory was 82.2MB in the beginning and 80.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:32:09,116 INFO L158 Benchmark]: Boogie Preprocessor took 23.74ms. Allocated memory is still 127.9MB. Free memory was 80.1MB in the beginning and 78.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:32:09,116 INFO L158 Benchmark]: RCFGBuilder took 405.61ms. Allocated memory is still 127.9MB. Free memory was 78.6MB in the beginning and 57.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 20:32:09,117 INFO L158 Benchmark]: TraceAbstraction took 26190.05ms. Allocated memory was 127.9MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 57.1MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-12-13 20:32:09,117 INFO L158 Benchmark]: Witness Printer took 48.65ms. Allocated memory is still 2.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:32:09,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 91.5MB in the beginning and 91.5MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.72ms. Allocated memory is still 127.9MB. Free memory was 94.2MB in the beginning and 82.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.46ms. Allocated memory is still 127.9MB. Free memory was 82.2MB in the beginning and 80.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.74ms. Allocated memory is still 127.9MB. Free memory was 80.1MB in the beginning and 78.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 405.61ms. Allocated memory is still 127.9MB. Free memory was 78.6MB in the beginning and 57.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 26190.05ms. Allocated memory was 127.9MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 57.1MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 48.65ms. Allocated memory is still 2.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). 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: 4.5s, 144 PlacesBefore, 36 PlacesAfterwards, 145 TransitionsBefore, 30 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 153 TotalNumberOfCompositions, 2491 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2299, independent: 2278, independent conditional: 0, independent unconditional: 2278, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1201, independent: 1194, independent conditional: 0, independent unconditional: 1194, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2299, independent: 1084, independent conditional: 0, independent unconditional: 1084, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 1201, unknown conditional: 0, unknown unconditional: 1201] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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 7 procedures, 200 locations, 17 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: 26.1s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1357 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1185 mSDsluCounter, 211 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2187 IncrementalHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 30 mSDtfsCounter, 2187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=10, InterpolantAutomatonStates: 65, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 175 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 453 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1438 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 50/89 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 20:32:09,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcdd439-a882-4938-ae71-5fdc80e2487c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE