./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/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_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/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_77021a6d-2dae-4858-83da-dfde4d287d32/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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- 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 15:29:53,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:29:53,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:29:53,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:29:53,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:29:53,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:29:53,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:29:53,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:29:53,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:29:53,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:29:53,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:29:53,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:29:53,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:29:53,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:29:53,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:29:53,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:29:53,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:29:53,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:29:53,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:29:53,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:29:53,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:29:53,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:29:53,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:29:53,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:29:53,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:29:53,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:29:53,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:29:53,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:29:53,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:29:53,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:29:53,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:29:53,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:29:53,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:29:53,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:29:53,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:29:53,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:29:53,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:29:53,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:29:53,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:29:53,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:29:53,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:29:53,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 15:29:53,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:29:53,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:29:53,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:29:53,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:29:53,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:29:53,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:29:53,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:29:53,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:29:53,284 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:29:53,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:29:53,284 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:29:53,285 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:29:53,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:29:53,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:29:53,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:29:53,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:29:53,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:29:53,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:29:53,286 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:29:53,286 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:29:53,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:29:53,286 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:29:53,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:29:53,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:29:53,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:29:53,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:29:53,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:29:53,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:29:53,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:29:53,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:29:53,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:29:53,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:29:53,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:29:53,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:29:53,288 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:29:53,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:29:53,288 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:29:53,289 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_77021a6d-2dae-4858-83da-dfde4d287d32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2022-12-13 15:29:53,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:29:53,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:29:53,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:29:53,471 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:29:53,472 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:29:53,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-12-13 15:29:56,094 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:29:56,257 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:29:56,257 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-12-13 15:29:56,265 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/data/57f372694/daff88f6eed24822a664237befe0ed09/FLAG051de94b2 [2022-12-13 15:29:56,279 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/data/57f372694/daff88f6eed24822a664237befe0ed09 [2022-12-13 15:29:56,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:29:56,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:29:56,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:29:56,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:29:56,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:29:56,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,289 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 03:29:56, skipping insertion in model container [2022-12-13 15:29:56,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:29:56,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:29:56,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,432 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,432 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,433 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,433 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,444 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_77021a6d-2dae-4858-83da-dfde4d287d32/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-12-13 15:29:56,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:29:56,457 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:29:56,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:29:56,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:29:56,481 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_77021a6d-2dae-4858-83da-dfde4d287d32/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-12-13 15:29:56,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:29:56,495 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:29:56,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56 WrapperNode [2022-12-13 15:29:56,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:29:56,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:29:56,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:29:56,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:29:56,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,530 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 398 [2022-12-13 15:29:56,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:29:56,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:29:56,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:29:56,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:29:56,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:29:56,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:29:56,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:29:56,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:29:56,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (1/1) ... [2022-12-13 15:29:56,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:29:56,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:29:56,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:29:56,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:29:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:29:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:29:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:29:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:29:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 15:29:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 15:29:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 15:29:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 15:29:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 15:29:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 15:29:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 15:29:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 15:29:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:29:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:29:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:29:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:29:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:29:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:29:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:29:56,618 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 15:29:56,712 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:29:56,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:29:57,158 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:29:57,484 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:29:57,484 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 15:29:57,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:29:57 BoogieIcfgContainer [2022-12-13 15:29:57,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:29:57,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:29:57,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:29:57,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:29:57,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:29:56" (1/3) ... [2022-12-13 15:29:57,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231aba3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:29:57, skipping insertion in model container [2022-12-13 15:29:57,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:56" (2/3) ... [2022-12-13 15:29:57,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231aba3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:29:57, skipping insertion in model container [2022-12-13 15:29:57,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:29:57" (3/3) ... [2022-12-13 15:29:57,492 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-12-13 15:29:57,499 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:29:57,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:29:57,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 15:29:57,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:29:57,650 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 15:29:57,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 304 transitions, 640 flow [2022-12-13 15:29:57,746 INFO L130 PetriNetUnfolder]: 22/300 cut-off events. [2022-12-13 15:29:57,746 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 15:29:57,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 300 events. 22/300 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 313 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 254. Up to 2 conditions per place. [2022-12-13 15:29:57,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 304 transitions, 640 flow [2022-12-13 15:29:57,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 277 transitions, 575 flow [2022-12-13 15:29:57,758 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:29:57,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 277 transitions, 575 flow [2022-12-13 15:29:57,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 277 transitions, 575 flow [2022-12-13 15:29:57,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 277 transitions, 575 flow [2022-12-13 15:29:57,805 INFO L130 PetriNetUnfolder]: 21/277 cut-off events. [2022-12-13 15:29:57,805 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 15:29:57,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 277 events. 21/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 254. Up to 2 conditions per place. [2022-12-13 15:29:57,808 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2022-12-13 15:30:12,593 INFO L134 LiptonReduction]: Checked pairs total: 9999 [2022-12-13 15:30:12,593 INFO L136 LiptonReduction]: Total number of compositions: 295 [2022-12-13 15:30:12,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:30:12,613 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;@124cade0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:30:12,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-12-13 15:30:12,616 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 15:30:12,616 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:30:12,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:30:12,617 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 15:30:12,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:30:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:30:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash 52290, now seen corresponding path program 1 times [2022-12-13 15:30:12,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:30:12,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133526347] [2022-12-13 15:30:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:12,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:30:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:12,814 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 15:30:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:30:12,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133526347] [2022-12-13 15:30:12,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133526347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:30:12,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:30:12,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:30:12,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727010474] [2022-12-13 15:30:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:30:12,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:30:12,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:30:12,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:30:12,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:30:12,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 599 [2022-12-13 15:30:12,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:12,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:30:12,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 599 [2022-12-13 15:30:12,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:30:21,316 INFO L130 PetriNetUnfolder]: 59431/74557 cut-off events. [2022-12-13 15:30:21,317 INFO L131 PetriNetUnfolder]: For 1102/1102 co-relation queries the response was YES. [2022-12-13 15:30:21,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150200 conditions, 74557 events. 59431/74557 cut-off events. For 1102/1102 co-relation queries the response was YES. Maximal size of possible extension queue 5848. Compared 433645 event pairs, 40496 based on Foata normal form. 0/25671 useless extension candidates. Maximal degree in co-relation 66046. Up to 36533 conditions per place. [2022-12-13 15:30:21,666 INFO L137 encePairwiseOnDemand]: 576/599 looper letters, 91 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2022-12-13 15:30:21,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2022-12-13 15:30:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:30:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:30:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2022-12-13 15:30:21,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46855870895937674 [2022-12-13 15:30:21,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2022-12-13 15:30:21,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2022-12-13 15:30:21,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:30:21,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2022-12-13 15:30:21,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:21,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:21,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:21,695 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 159 flow. Second operand 3 states and 842 transitions. [2022-12-13 15:30:21,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2022-12-13 15:30:22,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 15:30:22,126 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 180 flow [2022-12-13 15:30:22,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2022-12-13 15:30:22,129 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2022-12-13 15:30:22,130 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 180 flow [2022-12-13 15:30:22,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:22,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:30:22,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 15:30:22,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:30:22,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:30:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:30:22,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1623928, now seen corresponding path program 1 times [2022-12-13 15:30:22,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:30:22,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942791703] [2022-12-13 15:30:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:22,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:30:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:22,212 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 15:30:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:30:22,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942791703] [2022-12-13 15:30:22,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942791703] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:30:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216194136] [2022-12-13 15:30:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:22,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:30:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:30:22,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:30:22,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:30:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:22,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:30:22,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:30:22,348 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 15:30:22,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:30:22,362 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 15:30:22,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216194136] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:30:22,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:30:22,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 15:30:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033948668] [2022-12-13 15:30:22,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:30:22,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:30:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:30:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:30:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:30:22,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 599 [2022-12-13 15:30:22,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:22,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:30:22,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 599 [2022-12-13 15:30:22,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:30:43,077 INFO L130 PetriNetUnfolder]: 148585/186391 cut-off events. [2022-12-13 15:30:43,077 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:30:43,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372694 conditions, 186391 events. 148585/186391 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11997. Compared 1167505 event pairs, 101240 based on Foata normal form. 0/64704 useless extension candidates. Maximal degree in co-relation 298071. Up to 36531 conditions per place. [2022-12-13 15:30:44,036 INFO L137 encePairwiseOnDemand]: 587/599 looper letters, 208 selfloop transitions, 33 changer transitions 0/247 dead transitions. [2022-12-13 15:30:44,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 247 transitions, 1122 flow [2022-12-13 15:30:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:30:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:30:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1923 transitions. [2022-12-13 15:30:44,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4586215120438827 [2022-12-13 15:30:44,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1923 transitions. [2022-12-13 15:30:44,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1923 transitions. [2022-12-13 15:30:44,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:30:44,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1923 transitions. [2022-12-13 15:30:44,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.7142857142857) internal successors, (1923), 7 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:44,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 599.0) internal successors, (4792), 8 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:44,062 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 599.0) internal successors, (4792), 8 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:44,063 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 180 flow. Second operand 7 states and 1923 transitions. [2022-12-13 15:30:44,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 247 transitions, 1122 flow [2022-12-13 15:30:44,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 247 transitions, 1098 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:30:44,068 INFO L231 Difference]: Finished difference. Result has 68 places, 87 transitions, 387 flow [2022-12-13 15:30:44,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=68, PETRI_TRANSITIONS=87} [2022-12-13 15:30:44,069 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2022-12-13 15:30:44,069 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 87 transitions, 387 flow [2022-12-13 15:30:44,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:44,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:30:44,070 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 15:30:44,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:30:44,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:30:44,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:30:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:30:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash 50344707, now seen corresponding path program 1 times [2022-12-13 15:30:44,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:30:44,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269708090] [2022-12-13 15:30:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:30:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:30:44,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:30:44,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269708090] [2022-12-13 15:30:44,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269708090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:30:44,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000656593] [2022-12-13 15:30:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:44,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:30:44,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:30:44,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:30:44,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:30:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:44,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:30:44,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:30:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:30:44,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:30:44,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000656593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:30:44,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:30:44,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 15:30:44,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903291535] [2022-12-13 15:30:44,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:30:44,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:30:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:30:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:30:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:30:44,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 599 [2022-12-13 15:30:44,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 87 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 239.8) internal successors, (1199), 5 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:44,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:30:44,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 599 [2022-12-13 15:30:44,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:31:03,219 INFO L130 PetriNetUnfolder]: 148576/186379 cut-off events. [2022-12-13 15:31:03,220 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 15:31:03,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372697 conditions, 186379 events. 148576/186379 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13083. Compared 1175831 event pairs, 101240 based on Foata normal form. 2/64705 useless extension candidates. Maximal degree in co-relation 223590. Up to 109575 conditions per place. [2022-12-13 15:31:04,066 INFO L137 encePairwiseOnDemand]: 590/599 looper letters, 134 selfloop transitions, 15 changer transitions 0/155 dead transitions. [2022-12-13 15:31:04,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 155 transitions, 780 flow [2022-12-13 15:31:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:31:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:31:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1340 transitions. [2022-12-13 15:31:04,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44741235392320533 [2022-12-13 15:31:04,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1340 transitions. [2022-12-13 15:31:04,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1340 transitions. [2022-12-13 15:31:04,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:31:04,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1340 transitions. [2022-12-13 15:31:04,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:04,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 599.0) internal successors, (3594), 6 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:04,076 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 599.0) internal successors, (3594), 6 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:04,076 INFO L175 Difference]: Start difference. First operand has 68 places, 87 transitions, 387 flow. Second operand 5 states and 1340 transitions. [2022-12-13 15:31:04,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 155 transitions, 780 flow [2022-12-13 15:31:04,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 155 transitions, 750 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 15:31:04,079 INFO L231 Difference]: Finished difference. Result has 67 places, 75 transitions, 306 flow [2022-12-13 15:31:04,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=67, PETRI_TRANSITIONS=75} [2022-12-13 15:31:04,080 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -8 predicate places. [2022-12-13 15:31:04,080 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 75 transitions, 306 flow [2022-12-13 15:31:04,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.8) internal successors, (1199), 5 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:04,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:31:04,081 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 15:31:04,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:31:04,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:04,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:31:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:31:04,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1136716226, now seen corresponding path program 2 times [2022-12-13 15:31:04,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:31:04,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632201448] [2022-12-13 15:31:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:04,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:31:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:31:04,395 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 15:31:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:31:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632201448] [2022-12-13 15:31:04,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632201448] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:31:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968175553] [2022-12-13 15:31:04,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:31:04,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:31:04,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:31:04,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:31:04,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:31:04,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:31:04,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:31:04,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:31:04,514 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 15:31:04,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:31:04,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968175553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:31:04,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:31:04,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 15:31:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547851213] [2022-12-13 15:31:04,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:31:04,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:31:04,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:31:04,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:31:04,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:31:04,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 599 [2022-12-13 15:31:04,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 75 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:04,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:31:04,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 599 [2022-12-13 15:31:04,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:31:22,892 INFO L130 PetriNetUnfolder]: 148576/186378 cut-off events. [2022-12-13 15:31:22,892 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-13 15:31:23,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372689 conditions, 186378 events. 148576/186378 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12873. Compared 1176438 event pairs, 101240 based on Foata normal form. 1/63339 useless extension candidates. Maximal degree in co-relation 298057. Up to 182623 conditions per place. [2022-12-13 15:31:23,737 INFO L137 encePairwiseOnDemand]: 596/599 looper letters, 62 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2022-12-13 15:31:23,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 432 flow [2022-12-13 15:31:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:31:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:31:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2022-12-13 15:31:23,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.431274346132443 [2022-12-13 15:31:23,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2022-12-13 15:31:23,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2022-12-13 15:31:23,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:31:23,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2022-12-13 15:31:23,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:23,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:23,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:23,744 INFO L175 Difference]: Start difference. First operand has 67 places, 75 transitions, 306 flow. Second operand 3 states and 775 transitions. [2022-12-13 15:31:23,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 432 flow [2022-12-13 15:31:23,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 411 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:31:23,746 INFO L231 Difference]: Finished difference. Result has 65 places, 74 transitions, 287 flow [2022-12-13 15:31:23,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=65, PETRI_TRANSITIONS=74} [2022-12-13 15:31:23,747 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2022-12-13 15:31:23,747 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 74 transitions, 287 flow [2022-12-13 15:31:23,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:23,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:31:23,748 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 15:31:23,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:31:23,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:23,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:31:23,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:31:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1195296881, now seen corresponding path program 1 times [2022-12-13 15:31:23,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:31:23,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175498185] [2022-12-13 15:31:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:23,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:31:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:31:24,045 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 15:31:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:31:24,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175498185] [2022-12-13 15:31:24,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175498185] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:31:24,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874401061] [2022-12-13 15:31:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:24,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:24,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:31:24,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:31:24,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:31:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:31:24,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:31:24,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:31:24,161 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 15:31:24,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:31:24,205 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 15:31:24,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874401061] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:31:24,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:31:24,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 15:31:24,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682584313] [2022-12-13 15:31:24,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:31:24,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:31:24,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:31:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:31:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:31:24,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 599 [2022-12-13 15:31:24,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 74 transitions, 287 flow. Second operand has 13 states, 13 states have (on average 240.15384615384616) internal successors, (3122), 13 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:31:24,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:31:24,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 599 [2022-12-13 15:31:24,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:32:06,882 INFO L130 PetriNetUnfolder]: 326866/410028 cut-off events. [2022-12-13 15:32:06,883 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-13 15:32:07,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819863 conditions, 410028 events. 326866/410028 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 17387. Compared 2684668 event pairs, 222728 based on Foata normal form. 12/142772 useless extension candidates. Maximal degree in co-relation 819759. Up to 36543 conditions per place. [2022-12-13 15:32:08,967 INFO L137 encePairwiseOnDemand]: 591/599 looper letters, 447 selfloop transitions, 51 changer transitions 0/504 dead transitions. [2022-12-13 15:32:08,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 504 transitions, 2355 flow [2022-12-13 15:32:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:32:08,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:32:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3378 transitions. [2022-12-13 15:32:08,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4699499165275459 [2022-12-13 15:32:08,974 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3378 transitions. [2022-12-13 15:32:08,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3378 transitions. [2022-12-13 15:32:08,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:32:08,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3378 transitions. [2022-12-13 15:32:08,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 281.5) internal successors, (3378), 12 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:32:08,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 599.0) internal successors, (7787), 13 states have internal predecessors, (7787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:32:08,988 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 599.0) internal successors, (7787), 13 states have internal predecessors, (7787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:32:08,988 INFO L175 Difference]: Start difference. First operand has 65 places, 74 transitions, 287 flow. Second operand 12 states and 3378 transitions. [2022-12-13 15:32:08,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 504 transitions, 2355 flow [2022-12-13 15:32:08,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 504 transitions, 2331 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:32:08,993 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 635 flow [2022-12-13 15:32:08,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=635, PETRI_PLACES=80, PETRI_TRANSITIONS=104} [2022-12-13 15:32:08,994 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2022-12-13 15:32:08,994 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 635 flow [2022-12-13 15:32:08,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.15384615384616) internal successors, (3122), 13 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:32:08,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:32:08,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:32:09,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:32:09,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:09,198 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:32:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1231710704, now seen corresponding path program 1 times [2022-12-13 15:32:09,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:09,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681620927] [2022-12-13 15:32:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:09,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:09,305 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 15:32:09,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:09,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681620927] [2022-12-13 15:32:09,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681620927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:09,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:09,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:32:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697982464] [2022-12-13 15:32:09,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:09,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:32:09,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:09,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:32:09,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:32:09,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 599 [2022-12-13 15:32:09,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 104 transitions, 635 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:32:09,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:32:09,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 599 [2022-12-13 15:32:09,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:33:04,880 INFO L130 PetriNetUnfolder]: 411214/526309 cut-off events. [2022-12-13 15:33:04,880 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-12-13 15:33:06,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059269 conditions, 526309 events. 411214/526309 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 23746. Compared 3848745 event pairs, 119944 based on Foata normal form. 0/194483 useless extension candidates. Maximal degree in co-relation 866628. Up to 326008 conditions per place. [2022-12-13 15:33:07,828 INFO L137 encePairwiseOnDemand]: 595/599 looper letters, 132 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-12-13 15:33:07,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 982 flow [2022-12-13 15:33:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:33:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:33:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2022-12-13 15:33:07,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4602114635503617 [2022-12-13 15:33:07,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2022-12-13 15:33:07,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2022-12-13 15:33:07,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:33:07,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2022-12-13 15:33:07,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:33:07,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:33:07,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:33:07,836 INFO L175 Difference]: Start difference. First operand has 80 places, 104 transitions, 635 flow. Second operand 3 states and 827 transitions. [2022-12-13 15:33:07,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 982 flow [2022-12-13 15:33:07,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 140 transitions, 838 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-12-13 15:33:07,840 INFO L231 Difference]: Finished difference. Result has 78 places, 105 transitions, 505 flow [2022-12-13 15:33:07,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=505, PETRI_PLACES=78, PETRI_TRANSITIONS=105} [2022-12-13 15:33:07,841 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2022-12-13 15:33:07,841 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 105 transitions, 505 flow [2022-12-13 15:33:07,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:33:07,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:33:07,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:33:07,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:33:07,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:33:07,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:33:07,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1736944050, now seen corresponding path program 1 times [2022-12-13 15:33:07,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:33:07,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786575240] [2022-12-13 15:33:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:33:07,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:33:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:33:07,907 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 15:33:07,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:33:07,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786575240] [2022-12-13 15:33:07,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786575240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:33:07,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:33:07,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:33:07,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938424331] [2022-12-13 15:33:07,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:33:07,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:33:07,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:33:07,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:33:07,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:33:07,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 599 [2022-12-13 15:33:07,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 105 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:33:07,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:33:07,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 599 [2022-12-13 15:33:07,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:33:57,987 INFO L130 PetriNetUnfolder]: 371614/478173 cut-off events. [2022-12-13 15:33:57,987 INFO L131 PetriNetUnfolder]: For 33682/33682 co-relation queries the response was YES. [2022-12-13 15:33:59,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001185 conditions, 478173 events. 371614/478173 cut-off events. For 33682/33682 co-relation queries the response was YES. Maximal size of possible extension queue 21265. Compared 3456453 event pairs, 285395 based on Foata normal form. 0/194956 useless extension candidates. Maximal degree in co-relation 909967. Up to 468581 conditions per place. [2022-12-13 15:34:00,912 INFO L137 encePairwiseOnDemand]: 597/599 looper letters, 97 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2022-12-13 15:34:00,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 697 flow [2022-12-13 15:34:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:34:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:34:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2022-12-13 15:34:00,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43906510851419034 [2022-12-13 15:34:00,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2022-12-13 15:34:00,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2022-12-13 15:34:00,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:34:00,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2022-12-13 15:34:00,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:00,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:00,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:00,920 INFO L175 Difference]: Start difference. First operand has 78 places, 105 transitions, 505 flow. Second operand 3 states and 789 transitions. [2022-12-13 15:34:00,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 697 flow [2022-12-13 15:34:00,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:34:00,945 INFO L231 Difference]: Finished difference. Result has 78 places, 104 transitions, 501 flow [2022-12-13 15:34:00,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=78, PETRI_TRANSITIONS=104} [2022-12-13 15:34:00,945 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2022-12-13 15:34:00,945 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 104 transitions, 501 flow [2022-12-13 15:34:00,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:00,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:34:00,946 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:34:00,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:34:00,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:34:00,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:34:00,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1736944049, now seen corresponding path program 1 times [2022-12-13 15:34:00,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:34:00,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830776406] [2022-12-13 15:34:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:34:00,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:34:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:34:01,011 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 15:34:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:34:01,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830776406] [2022-12-13 15:34:01,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830776406] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:34:01,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137902439] [2022-12-13 15:34:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:34:01,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:34:01,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:34:01,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:34:01,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:34:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:34:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:34:01,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:34:01,133 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 15:34:01,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:34:01,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137902439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:34:01,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:34:01,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2022-12-13 15:34:01,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151368452] [2022-12-13 15:34:01,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:34:01,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:34:01,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:34:01,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:34:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:34:01,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 599 [2022-12-13 15:34:01,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 104 transitions, 501 flow. Second operand has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:01,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:34:01,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 599 [2022-12-13 15:34:01,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:34:54,988 INFO L130 PetriNetUnfolder]: 396485/512418 cut-off events. [2022-12-13 15:34:54,988 INFO L131 PetriNetUnfolder]: For 33762/33762 co-relation queries the response was YES. [2022-12-13 15:34:56,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058531 conditions, 512418 events. 396485/512418 cut-off events. For 33762/33762 co-relation queries the response was YES. Maximal size of possible extension queue 22138. Compared 3759215 event pairs, 304095 based on Foata normal form. 0/218171 useless extension candidates. Maximal degree in co-relation 1058511. Up to 468580 conditions per place. [2022-12-13 15:34:57,708 INFO L137 encePairwiseOnDemand]: 586/599 looper letters, 178 selfloop transitions, 15 changer transitions 0/199 dead transitions. [2022-12-13 15:34:57,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 199 transitions, 1271 flow [2022-12-13 15:34:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:34:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:34:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1301 transitions. [2022-12-13 15:34:57,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4343906510851419 [2022-12-13 15:34:57,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1301 transitions. [2022-12-13 15:34:57,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1301 transitions. [2022-12-13 15:34:57,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:34:57,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1301 transitions. [2022-12-13 15:34:57,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:57,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 599.0) internal successors, (3594), 6 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:57,716 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 599.0) internal successors, (3594), 6 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:57,716 INFO L175 Difference]: Start difference. First operand has 78 places, 104 transitions, 501 flow. Second operand 5 states and 1301 transitions. [2022-12-13 15:34:57,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 199 transitions, 1271 flow [2022-12-13 15:34:57,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 199 transitions, 1270 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:34:57,733 INFO L231 Difference]: Finished difference. Result has 83 places, 116 transitions, 687 flow [2022-12-13 15:34:57,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=687, PETRI_PLACES=83, PETRI_TRANSITIONS=116} [2022-12-13 15:34:57,733 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2022-12-13 15:34:57,733 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 116 transitions, 687 flow [2022-12-13 15:34:57,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:57,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:34:57,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:34:57,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:34:57,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:34:57,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:34:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:34:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1728196921, now seen corresponding path program 1 times [2022-12-13 15:34:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:34:57,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928979051] [2022-12-13 15:34:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:34:57,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:34:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:34:57,994 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 15:34:57,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:34:57,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928979051] [2022-12-13 15:34:57,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928979051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:34:57,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:34:57,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:34:57,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905286383] [2022-12-13 15:34:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:34:57,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:34:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:34:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:34:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:34:58,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 599 [2022-12-13 15:34:58,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 687 flow. Second operand has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:34:58,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:34:58,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 599 [2022-12-13 15:34:58,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:36:11,522 INFO L130 PetriNetUnfolder]: 478512/641580 cut-off events. [2022-12-13 15:36:11,523 INFO L131 PetriNetUnfolder]: For 205944/205944 co-relation queries the response was YES. [2022-12-13 15:36:13,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621618 conditions, 641580 events. 478512/641580 cut-off events. For 205944/205944 co-relation queries the response was YES. Maximal size of possible extension queue 30815. Compared 5447424 event pairs, 169884 based on Foata normal form. 0/348397 useless extension candidates. Maximal degree in co-relation 1621595. Up to 394549 conditions per place. [2022-12-13 15:36:15,240 INFO L137 encePairwiseOnDemand]: 595/599 looper letters, 142 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2022-12-13 15:36:15,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 150 transitions, 1083 flow [2022-12-13 15:36:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:36:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:36:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2022-12-13 15:36:15,242 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45798553144129106 [2022-12-13 15:36:15,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2022-12-13 15:36:15,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2022-12-13 15:36:15,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:36:15,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2022-12-13 15:36:15,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:15,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:15,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 599.0) internal successors, (2396), 4 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:15,246 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 687 flow. Second operand 3 states and 823 transitions. [2022-12-13 15:36:15,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 150 transitions, 1083 flow [2022-12-13 15:36:15,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 1077 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 15:36:15,402 INFO L231 Difference]: Finished difference. Result has 85 places, 117 transitions, 695 flow [2022-12-13 15:36:15,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=695, PETRI_PLACES=85, PETRI_TRANSITIONS=117} [2022-12-13 15:36:15,403 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2022-12-13 15:36:15,403 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 117 transitions, 695 flow [2022-12-13 15:36:15,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:15,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:36:15,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:36:15,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:36:15,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:36:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:15,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1728197003, now seen corresponding path program 1 times [2022-12-13 15:36:15,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:15,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371060529] [2022-12-13 15:36:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:15,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:15,475 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 15:36:15,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:15,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371060529] [2022-12-13 15:36:15,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371060529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:15,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:15,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:36:15,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970404998] [2022-12-13 15:36:15,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:15,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:36:15,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:15,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:36:15,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:36:15,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 599 [2022-12-13 15:36:15,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 117 transitions, 695 flow. Second operand has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:15,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:36:15,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 599 [2022-12-13 15:36:15,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:33,656 INFO L130 PetriNetUnfolder]: 505660/685263 cut-off events. [2022-12-13 15:37:33,656 INFO L131 PetriNetUnfolder]: For 252923/252923 co-relation queries the response was YES. [2022-12-13 15:37:35,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800858 conditions, 685263 events. 505660/685263 cut-off events. For 252923/252923 co-relation queries the response was YES. Maximal size of possible extension queue 31925. Compared 5887618 event pairs, 466378 based on Foata normal form. 0/402750 useless extension candidates. Maximal degree in co-relation 1800833. Up to 635859 conditions per place. [2022-12-13 15:37:38,319 INFO L137 encePairwiseOnDemand]: 588/599 looper letters, 137 selfloop transitions, 14 changer transitions 2/159 dead transitions. [2022-12-13 15:37:38,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 1201 flow [2022-12-13 15:37:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:37:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:37:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1023 transitions. [2022-12-13 15:37:38,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42696160267111855 [2022-12-13 15:37:38,323 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1023 transitions. [2022-12-13 15:37:38,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1023 transitions. [2022-12-13 15:37:38,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:38,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1023 transitions. [2022-12-13 15:37:38,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:38,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 599.0) internal successors, (2995), 5 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:38,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 599.0) internal successors, (2995), 5 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:38,328 INFO L175 Difference]: Start difference. First operand has 85 places, 117 transitions, 695 flow. Second operand 4 states and 1023 transitions. [2022-12-13 15:37:38,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 1201 flow [2022-12-13 15:37:38,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 159 transitions, 1199 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:37:38,446 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 738 flow [2022-12-13 15:37:38,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=738, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2022-12-13 15:37:38,447 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2022-12-13 15:37:38,447 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 738 flow [2022-12-13 15:37:38,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:38,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:38,447 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:37:38,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:37:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 160111539, now seen corresponding path program 1 times [2022-12-13 15:37:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:38,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629465707] [2022-12-13 15:37:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:38,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:38,594 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 15:37:38,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:38,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629465707] [2022-12-13 15:37:38,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629465707] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:38,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:38,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:37:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534449735] [2022-12-13 15:37:38,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:37:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:37:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:37:38,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 599 [2022-12-13 15:37:38,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:38,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:38,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 599 [2022-12-13 15:37:38,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:04,385 INFO L130 PetriNetUnfolder]: 526278/711549 cut-off events. [2022-12-13 15:39:04,385 INFO L131 PetriNetUnfolder]: For 269832/269832 co-relation queries the response was YES. [2022-12-13 15:39:06,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026372 conditions, 711549 events. 526278/711549 cut-off events. For 269832/269832 co-relation queries the response was YES. Maximal size of possible extension queue 34401. Compared 6153850 event pairs, 230232 based on Foata normal form. 1386/477301 useless extension candidates. Maximal degree in co-relation 2026346. Up to 358681 conditions per place. [2022-12-13 15:39:09,151 INFO L137 encePairwiseOnDemand]: 591/599 looper letters, 180 selfloop transitions, 27 changer transitions 0/212 dead transitions. [2022-12-13 15:39:09,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 212 transitions, 1502 flow [2022-12-13 15:39:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:39:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:39:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2022-12-13 15:39:09,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4240400667779633 [2022-12-13 15:39:09,155 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2022-12-13 15:39:09,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2022-12-13 15:39:09,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:09,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2022-12-13 15:39:09,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:09,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 599.0) internal successors, (4193), 7 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:09,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 599.0) internal successors, (4193), 7 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:09,162 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 738 flow. Second operand 6 states and 1524 transitions. [2022-12-13 15:39:09,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 212 transitions, 1502 flow [2022-12-13 15:39:09,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 212 transitions, 1483 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:09,305 INFO L231 Difference]: Finished difference. Result has 95 places, 119 transitions, 812 flow [2022-12-13 15:39:09,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=599, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=95, PETRI_TRANSITIONS=119} [2022-12-13 15:39:09,306 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 20 predicate places. [2022-12-13 15:39:09,306 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 119 transitions, 812 flow [2022-12-13 15:39:09,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:09,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:09,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:39:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:39:09,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 15:39:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1358918233, now seen corresponding path program 1 times [2022-12-13 15:39:09,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:09,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284784537] [2022-12-13 15:39:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:09,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:09,384 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 15:39:09,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:09,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284784537] [2022-12-13 15:39:09,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284784537] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:39:09,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471817297] [2022-12-13 15:39:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:09,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:39:09,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:39:09,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77021a6d-2dae-4858-83da-dfde4d287d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:39:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:09,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 15:39:09,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:39:09,552 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 15:39:09,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:39:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:09,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471817297] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:39:09,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:39:09,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 9 [2022-12-13 15:39:09,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026021786] [2022-12-13 15:39:09,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:39:09,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:39:09,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:09,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:39:09,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:39:09,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 599 [2022-12-13 15:39:09,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 119 transitions, 812 flow. Second operand has 11 states, 11 states have (on average 227.1818181818182) internal successors, (2499), 11 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:09,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:09,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 599 [2022-12-13 15:39:09,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand