./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/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_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/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_af2439ef-b569-4609-b4ad-ee24eedd606b/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 c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- 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 19:01:53,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:01:53,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:01:53,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:01:53,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:01:53,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:01:53,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:01:53,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:01:53,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:01:53,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:01:53,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:01:53,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:01:53,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:01:53,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:01:53,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:01:53,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:01:53,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:01:53,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:01:53,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:01:53,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:01:53,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:01:53,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:01:53,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:01:53,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:01:53,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:01:53,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:01:53,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:01:53,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:01:53,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:01:53,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:01:53,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:01:53,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:01:53,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:01:53,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:01:53,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:01:53,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:01:53,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:01:53,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:01:53,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:01:53,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:01:53,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:01:53,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:01:53,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:01:53,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:01:53,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:01:53,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:01:53,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:01:53,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:01:53,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:01:53,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:01:53,330 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:01:53,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:01:53,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:01:53,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:01:53,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:01:53,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:01:53,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:01:53,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:01:53,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:01:53,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:01:53,332 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:01:53,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:01:53,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:01:53,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:01:53,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:01:53,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:01:53,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:01:53,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:01:53,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:01:53,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:01:53,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:01:53,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:01:53,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:01:53,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:01:53,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:01:53,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:01:53,334 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:01:53,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:01:53,334 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:01:53,335 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_af2439ef-b569-4609-b4ad-ee24eedd606b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-12-13 19:01:53,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:01:53,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:01:53,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:01:53,556 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:01:53,556 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:01:53,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-12-13 19:01:56,134 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:01:56,288 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:01:56,289 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-12-13 19:01:56,293 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/data/2f8f5d11f/021993447e53461186a33867fed43944/FLAG1e7c6b953 [2022-12-13 19:01:56,304 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/data/2f8f5d11f/021993447e53461186a33867fed43944 [2022-12-13 19:01:56,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:01:56,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:01:56,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:01:56,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:01:56,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:01:56,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67edf7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56, skipping insertion in model container [2022-12-13 19:01:56,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:01:56,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:01:56,459 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_af2439ef-b569-4609-b4ad-ee24eedd606b/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-12-13 19:01:56,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:01:56,477 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:01:56,496 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_af2439ef-b569-4609-b4ad-ee24eedd606b/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-12-13 19:01:56,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:01:56,514 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:01:56,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56 WrapperNode [2022-12-13 19:01:56,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:01:56,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:01:56,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:01:56,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:01:56,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,563 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 395 [2022-12-13 19:01:56,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:01:56,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:01:56,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:01:56,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:01:56,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,591 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:01:56,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:01:56,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:01:56,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:01:56,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (1/1) ... [2022-12-13 19:01:56,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:01:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:01:56,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:01:56,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:01:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:01:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:01:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:01:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:01:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:01:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:01:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:01:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:01:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:01:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:01:56,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:01:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:01:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:01:56,664 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 19:01:56,758 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:01:56,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:01:57,293 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:01:57,304 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:01:57,304 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 19:01:57,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:01:57 BoogieIcfgContainer [2022-12-13 19:01:57,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:01:57,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:01:57,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:01:57,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:01:57,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:01:56" (1/3) ... [2022-12-13 19:01:57,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dc28fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:01:57, skipping insertion in model container [2022-12-13 19:01:57,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:56" (2/3) ... [2022-12-13 19:01:57,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dc28fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:01:57, skipping insertion in model container [2022-12-13 19:01:57,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:01:57" (3/3) ... [2022-12-13 19:01:57,316 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-12-13 19:01:57,324 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:01:57,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:01:57,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-12-13 19:01:57,335 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:01:57,438 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:01:57,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 583 transitions, 1182 flow [2022-12-13 19:01:57,673 INFO L130 PetriNetUnfolder]: 44/581 cut-off events. [2022-12-13 19:01:57,673 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:01:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 581 events. 44/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1852 event pairs, 0 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-12-13 19:01:57,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 583 transitions, 1182 flow [2022-12-13 19:01:57,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 562 transitions, 1133 flow [2022-12-13 19:01:57,702 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:01:57,712 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 526 places, 562 transitions, 1133 flow [2022-12-13 19:01:57,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 526 places, 562 transitions, 1133 flow [2022-12-13 19:01:57,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 526 places, 562 transitions, 1133 flow [2022-12-13 19:01:57,810 INFO L130 PetriNetUnfolder]: 43/562 cut-off events. [2022-12-13 19:01:57,810 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:01:57,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 562 events. 43/562 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1756 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-12-13 19:01:57,843 INFO L119 LiptonReduction]: Number of co-enabled transitions 105228 [2022-12-13 19:02:37,960 INFO L134 LiptonReduction]: Checked pairs total: 102935 [2022-12-13 19:02:37,960 INFO L136 LiptonReduction]: Total number of compositions: 814 [2022-12-13 19:02:37,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:02:37,981 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;@3dadc09a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:02:37,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2022-12-13 19:02:37,984 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 19:02:37,984 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:02:37,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:37,984 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:02:37,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:37,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:37,989 INFO L85 PathProgramCache]: Analyzing trace with hash 83080, now seen corresponding path program 1 times [2022-12-13 19:02:37,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:37,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734636659] [2022-12-13 19:02:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:38,212 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 19:02:38,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:38,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734636659] [2022-12-13 19:02:38,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734636659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:38,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:38,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:02:38,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950899619] [2022-12-13 19:02:38,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:38,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:02:38,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:02:38,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:02:38,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 1397 [2022-12-13 19:02:38,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 552.6666666666666) internal successors, (1658), 3 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:38,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:38,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 1397 [2022-12-13 19:02:38,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:38,841 INFO L130 PetriNetUnfolder]: 972/1645 cut-off events. [2022-12-13 19:02:38,841 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-13 19:02:38,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3351 conditions, 1645 events. 972/1645 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 9879 event pairs, 897 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 3200. Up to 1645 conditions per place. [2022-12-13 19:02:38,847 INFO L137 encePairwiseOnDemand]: 1373/1397 looper letters, 44 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2022-12-13 19:02:38,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 189 flow [2022-12-13 19:02:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:02:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:02:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1724 transitions. [2022-12-13 19:02:38,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4113576712001909 [2022-12-13 19:02:38,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1724 transitions. [2022-12-13 19:02:38,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1724 transitions. [2022-12-13 19:02:38,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:38,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1724 transitions. [2022-12-13 19:02:38,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 574.6666666666666) internal successors, (1724), 3 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:38,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:38,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:38,910 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 145 flow. Second operand 3 states and 1724 transitions. [2022-12-13 19:02:38,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 189 flow [2022-12-13 19:02:38,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 19:02:38,915 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 96 flow [2022-12-13 19:02:38,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2022-12-13 19:02:38,920 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -24 predicate places. [2022-12-13 19:02:38,920 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 96 flow [2022-12-13 19:02:38,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.6666666666666) internal successors, (1658), 3 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:38,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:38,921 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:02:38,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:02:38,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:38,922 INFO L85 PathProgramCache]: Analyzing trace with hash 83161, now seen corresponding path program 1 times [2022-12-13 19:02:38,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:38,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117367767] [2022-12-13 19:02:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:38,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:38,990 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 19:02:38,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:38,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117367767] [2022-12-13 19:02:38,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117367767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:38,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:38,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:02:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261006320] [2022-12-13 19:02:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:02:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:02:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:02:39,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 1397 [2022-12-13 19:02:39,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 552.6666666666666) internal successors, (1658), 3 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:39,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:39,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 1397 [2022-12-13 19:02:39,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:39,809 INFO L130 PetriNetUnfolder]: 1943/3288 cut-off events. [2022-12-13 19:02:39,809 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-13 19:02:39,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 3288 events. 1943/3288 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 22394 event pairs, 1794 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 6656. Up to 1646 conditions per place. [2022-12-13 19:02:39,820 INFO L137 encePairwiseOnDemand]: 1394/1397 looper letters, 86 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2022-12-13 19:02:39,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 88 transitions, 362 flow [2022-12-13 19:02:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:02:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:02:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1745 transitions. [2022-12-13 19:02:39,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41636840849439277 [2022-12-13 19:02:39,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1745 transitions. [2022-12-13 19:02:39,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1745 transitions. [2022-12-13 19:02:39,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:39,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1745 transitions. [2022-12-13 19:02:39,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 581.6666666666666) internal successors, (1745), 3 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:39,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:39,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:39,843 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 96 flow. Second operand 3 states and 1745 transitions. [2022-12-13 19:02:39,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 88 transitions, 362 flow [2022-12-13 19:02:39,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 88 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:02:39,845 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 107 flow [2022-12-13 19:02:39,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-12-13 19:02:39,846 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -22 predicate places. [2022-12-13 19:02:39,846 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 107 flow [2022-12-13 19:02:39,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.6666666666666) internal successors, (1658), 3 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:39,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:39,847 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:02:39,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:02:39,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:39,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2583497, now seen corresponding path program 1 times [2022-12-13 19:02:39,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:39,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339165069] [2022-12-13 19:02:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:39,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,921 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 19:02:39,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:39,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339165069] [2022-12-13 19:02:39,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339165069] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:02:39,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46483705] [2022-12-13 19:02:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:39,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:02:39,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:02:39,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:02:39,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:02:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:40,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:02:40,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:02:40,038 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 19:02:40,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:02:40,052 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 19:02:40,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46483705] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:02:40,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:02:40,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-13 19:02:40,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838106705] [2022-12-13 19:02:40,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:02:40,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:02:40,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:02:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:02:40,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 1397 [2022-12-13 19:02:40,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 553.0) internal successors, (3318), 6 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:40,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:40,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 1397 [2022-12-13 19:02:40,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:42,063 INFO L130 PetriNetUnfolder]: 4856/8217 cut-off events. [2022-12-13 19:02:42,063 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-12-13 19:02:42,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16652 conditions, 8217 events. 4856/8217 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 61946 event pairs, 4485 based on Foata normal form. 0/2396 useless extension candidates. Maximal degree in co-relation 16644. Up to 1646 conditions per place. [2022-12-13 19:02:42,091 INFO L137 encePairwiseOnDemand]: 1394/1397 looper letters, 212 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-12-13 19:02:42,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 217 transitions, 905 flow [2022-12-13 19:02:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:02:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:02:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-12-13 19:02:42,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4213791457885946 [2022-12-13 19:02:42,096 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-12-13 19:02:42,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-12-13 19:02:42,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:42,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-12-13 19:02:42,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:42,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1397.0) internal successors, (9779), 7 states have internal predecessors, (9779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:42,126 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1397.0) internal successors, (9779), 7 states have internal predecessors, (9779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:42,126 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 6 states and 3532 transitions. [2022-12-13 19:02:42,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 217 transitions, 905 flow [2022-12-13 19:02:42,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 217 transitions, 903 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:02:42,128 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 141 flow [2022-12-13 19:02:42,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2022-12-13 19:02:42,129 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -15 predicate places. [2022-12-13 19:02:42,129 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 141 flow [2022-12-13 19:02:42,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 553.0) internal successors, (3318), 6 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:42,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:42,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:02:42,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:02:42,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 19:02:42,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:42,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash 80098983, now seen corresponding path program 1 times [2022-12-13 19:02:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:42,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856908288] [2022-12-13 19:02:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:42,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:42,382 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 19:02:42,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:42,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856908288] [2022-12-13 19:02:42,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856908288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:42,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:42,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:02:42,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174487684] [2022-12-13 19:02:42,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:42,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:02:42,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:42,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:02:42,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:02:42,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:02:42,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:42,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:42,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:02:42,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:43,833 INFO L130 PetriNetUnfolder]: 4386/7427 cut-off events. [2022-12-13 19:02:43,833 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-12-13 19:02:43,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15066 conditions, 7427 events. 4386/7427 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 54937 event pairs, 4035 based on Foata normal form. 0/2207 useless extension candidates. Maximal degree in co-relation 15054. Up to 7427 conditions per place. [2022-12-13 19:02:43,857 INFO L137 encePairwiseOnDemand]: 1394/1397 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2022-12-13 19:02:43,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 231 flow [2022-12-13 19:02:43,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:02:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:02:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1698 transitions. [2022-12-13 19:02:43,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4051539012168933 [2022-12-13 19:02:43,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1698 transitions. [2022-12-13 19:02:43,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1698 transitions. [2022-12-13 19:02:43,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:43,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1698 transitions. [2022-12-13 19:02:43,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 566.0) internal successors, (1698), 3 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:43,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:43,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:43,871 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 141 flow. Second operand 3 states and 1698 transitions. [2022-12-13 19:02:43,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 231 flow [2022-12-13 19:02:43,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 223 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 19:02:43,873 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 131 flow [2022-12-13 19:02:43,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2022-12-13 19:02:43,873 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -16 predicate places. [2022-12-13 19:02:43,874 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 131 flow [2022-12-13 19:02:43,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:43,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:43,874 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:02:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:02:43,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:43,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash 80098827, now seen corresponding path program 1 times [2022-12-13 19:02:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:43,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979294399] [2022-12-13 19:02:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:43,930 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 19:02:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979294399] [2022-12-13 19:02:43,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979294399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:43,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:43,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:02:43,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175447321] [2022-12-13 19:02:43,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:43,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:02:43,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:43,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:02:43,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:02:43,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:02:43,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:43,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:43,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:02:43,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:47,157 INFO L130 PetriNetUnfolder]: 7611/12242 cut-off events. [2022-12-13 19:02:47,157 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-13 19:02:47,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24784 conditions, 12242 events. 7611/12242 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 89464 event pairs, 2910 based on Foata normal form. 0/3542 useless extension candidates. Maximal degree in co-relation 24771. Up to 6311 conditions per place. [2022-12-13 19:02:47,217 INFO L137 encePairwiseOnDemand]: 1386/1397 looper letters, 74 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2022-12-13 19:02:47,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 82 transitions, 368 flow [2022-12-13 19:02:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:02:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:02:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1734 transitions. [2022-12-13 19:02:47,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41374373657838226 [2022-12-13 19:02:47,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1734 transitions. [2022-12-13 19:02:47,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1734 transitions. [2022-12-13 19:02:47,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:47,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1734 transitions. [2022-12-13 19:02:47,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 578.0) internal successors, (1734), 3 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:47,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:47,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:47,245 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 131 flow. Second operand 3 states and 1734 transitions. [2022-12-13 19:02:47,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 82 transitions, 368 flow [2022-12-13 19:02:47,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 82 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:02:47,249 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 196 flow [2022-12-13 19:02:47,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2022-12-13 19:02:47,250 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2022-12-13 19:02:47,250 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 196 flow [2022-12-13 19:02:47,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:47,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:47,251 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:02:47,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:02:47,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash 80099027, now seen corresponding path program 1 times [2022-12-13 19:02:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:47,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470350326] [2022-12-13 19:02:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:47,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:47,288 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 19:02:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470350326] [2022-12-13 19:02:47,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470350326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:47,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:47,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:02:47,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989868309] [2022-12-13 19:02:47,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:47,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:02:47,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:47,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:02:47,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:02:47,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:02:47,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:47,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:47,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:02:47,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:49,572 INFO L130 PetriNetUnfolder]: 6971/11602 cut-off events. [2022-12-13 19:02:49,572 INFO L131 PetriNetUnfolder]: For 998/998 co-relation queries the response was YES. [2022-12-13 19:02:49,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26707 conditions, 11602 events. 6971/11602 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 90423 event pairs, 3135 based on Foata normal form. 320/4662 useless extension candidates. Maximal degree in co-relation 26691. Up to 5916 conditions per place. [2022-12-13 19:02:49,602 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 69 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2022-12-13 19:02:49,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 395 flow [2022-12-13 19:02:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:02:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:02:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1731 transitions. [2022-12-13 19:02:49,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41302791696492486 [2022-12-13 19:02:49,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1731 transitions. [2022-12-13 19:02:49,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1731 transitions. [2022-12-13 19:02:49,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:49,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1731 transitions. [2022-12-13 19:02:49,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 577.0) internal successors, (1731), 3 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:49,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:49,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:49,619 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 196 flow. Second operand 3 states and 1731 transitions. [2022-12-13 19:02:49,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 395 flow [2022-12-13 19:02:49,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:02:49,626 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 199 flow [2022-12-13 19:02:49,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2022-12-13 19:02:49,627 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2022-12-13 19:02:49,627 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 199 flow [2022-12-13 19:02:49,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:49,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:49,628 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:02:49,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:02:49,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:49,629 INFO L85 PathProgramCache]: Analyzing trace with hash 80098982, now seen corresponding path program 1 times [2022-12-13 19:02:49,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:49,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286028119] [2022-12-13 19:02:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:49,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:49,672 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 19:02:49,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:49,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286028119] [2022-12-13 19:02:49,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286028119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:49,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:49,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:02:49,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804786768] [2022-12-13 19:02:49,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:49,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:02:49,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:02:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:02:49,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:02:49,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:49,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:49,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:02:49,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:51,875 INFO L130 PetriNetUnfolder]: 6031/10022 cut-off events. [2022-12-13 19:02:51,876 INFO L131 PetriNetUnfolder]: For 2548/2548 co-relation queries the response was YES. [2022-12-13 19:02:51,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23828 conditions, 10022 events. 6031/10022 cut-off events. For 2548/2548 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 74131 event pairs, 5300 based on Foata normal form. 320/4282 useless extension candidates. Maximal degree in co-relation 23811. Up to 10022 conditions per place. [2022-12-13 19:02:51,910 INFO L137 encePairwiseOnDemand]: 1394/1397 looper letters, 47 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2022-12-13 19:02:51,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 48 transitions, 277 flow [2022-12-13 19:02:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:02:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:02:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1696 transitions. [2022-12-13 19:02:51,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40467668814125507 [2022-12-13 19:02:51,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1696 transitions. [2022-12-13 19:02:51,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1696 transitions. [2022-12-13 19:02:51,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:51,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1696 transitions. [2022-12-13 19:02:51,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 565.3333333333334) internal successors, (1696), 3 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:51,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:51,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:51,924 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 199 flow. Second operand 3 states and 1696 transitions. [2022-12-13 19:02:51,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 48 transitions, 277 flow [2022-12-13 19:02:51,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:02:51,927 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 176 flow [2022-12-13 19:02:51,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2022-12-13 19:02:51,928 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2022-12-13 19:02:51,928 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 176 flow [2022-12-13 19:02:51,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:51,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:51,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:02:51,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:02:51,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:51,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash 80098897, now seen corresponding path program 1 times [2022-12-13 19:02:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:51,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935233406] [2022-12-13 19:02:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:51,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:52,024 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 19:02:52,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:52,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935233406] [2022-12-13 19:02:52,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935233406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:52,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:52,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:02:52,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749264918] [2022-12-13 19:02:52,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:52,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:02:52,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:02:52,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:02:52,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 1397 [2022-12-13 19:02:52,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:52,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:52,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 1397 [2022-12-13 19:02:52,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:54,733 INFO L130 PetriNetUnfolder]: 7044/11369 cut-off events. [2022-12-13 19:02:54,734 INFO L131 PetriNetUnfolder]: For 1415/1415 co-relation queries the response was YES. [2022-12-13 19:02:54,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26537 conditions, 11369 events. 7044/11369 cut-off events. For 1415/1415 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 83465 event pairs, 1115 based on Foata normal form. 0/4465 useless extension candidates. Maximal degree in co-relation 26519. Up to 6109 conditions per place. [2022-12-13 19:02:54,778 INFO L137 encePairwiseOnDemand]: 1366/1397 looper letters, 81 selfloop transitions, 46 changer transitions 0/127 dead transitions. [2022-12-13 19:02:54,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 127 transitions, 634 flow [2022-12-13 19:02:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:02:54,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:02:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2749 transitions. [2022-12-13 19:02:54,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39355762347888334 [2022-12-13 19:02:54,784 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2749 transitions. [2022-12-13 19:02:54,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2749 transitions. [2022-12-13 19:02:54,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:54,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2749 transitions. [2022-12-13 19:02:54,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 549.8) internal successors, (2749), 5 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:54,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1397.0) internal successors, (8382), 6 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:54,797 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1397.0) internal successors, (8382), 6 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:54,797 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 176 flow. Second operand 5 states and 2749 transitions. [2022-12-13 19:02:54,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 127 transitions, 634 flow [2022-12-13 19:02:54,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 127 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:02:54,799 INFO L231 Difference]: Finished difference. Result has 66 places, 90 transitions, 573 flow [2022-12-13 19:02:54,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=573, PETRI_PLACES=66, PETRI_TRANSITIONS=90} [2022-12-13 19:02:54,799 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2022-12-13 19:02:54,799 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 90 transitions, 573 flow [2022-12-13 19:02:54,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:54,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:54,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:02:54,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:02:54,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1812045503, now seen corresponding path program 1 times [2022-12-13 19:02:54,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:54,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923980565] [2022-12-13 19:02:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:55,124 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 19:02:55,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:55,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923980565] [2022-12-13 19:02:55,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923980565] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:02:55,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945061469] [2022-12-13 19:02:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:55,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:02:55,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:02:55,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:02:55,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:02:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:55,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 19:02:55,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:02:55,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:02:55,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:02:55,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:02:55,315 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 19:02:55,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:02:55,348 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_132 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_132) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-12-13 19:02:55,363 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:02:55,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-12-13 19:02:55,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:02:55,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 37 [2022-12-13 19:02:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 19:02:55,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945061469] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:02:55,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:02:55,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 19:02:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675449447] [2022-12-13 19:02:55,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:02:55,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:02:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:02:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2022-12-13 19:02:55,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 1397 [2022-12-13 19:02:55,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 90 transitions, 573 flow. Second operand has 11 states, 11 states have (on average 522.3636363636364) internal successors, (5746), 11 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:55,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:02:55,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 1397 [2022-12-13 19:02:55,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:02:59,018 INFO L130 PetriNetUnfolder]: 9728/15789 cut-off events. [2022-12-13 19:02:59,018 INFO L131 PetriNetUnfolder]: For 9983/9983 co-relation queries the response was YES. [2022-12-13 19:02:59,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56930 conditions, 15789 events. 9728/15789 cut-off events. For 9983/9983 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 123612 event pairs, 2543 based on Foata normal form. 4/8779 useless extension candidates. Maximal degree in co-relation 56907. Up to 8693 conditions per place. [2022-12-13 19:02:59,097 INFO L137 encePairwiseOnDemand]: 1380/1397 looper letters, 162 selfloop transitions, 30 changer transitions 1/193 dead transitions. [2022-12-13 19:02:59,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 193 transitions, 1573 flow [2022-12-13 19:02:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:02:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:02:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3763 transitions. [2022-12-13 19:02:59,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38480417220574703 [2022-12-13 19:02:59,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3763 transitions. [2022-12-13 19:02:59,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3763 transitions. [2022-12-13 19:02:59,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:02:59,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3763 transitions. [2022-12-13 19:02:59,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 537.5714285714286) internal successors, (3763), 7 states have internal predecessors, (3763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:59,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1397.0) internal successors, (11176), 8 states have internal predecessors, (11176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:59,120 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1397.0) internal successors, (11176), 8 states have internal predecessors, (11176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:59,120 INFO L175 Difference]: Start difference. First operand has 66 places, 90 transitions, 573 flow. Second operand 7 states and 3763 transitions. [2022-12-13 19:02:59,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 193 transitions, 1573 flow [2022-12-13 19:02:59,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 193 transitions, 1573 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:02:59,138 INFO L231 Difference]: Finished difference. Result has 76 places, 111 transitions, 853 flow [2022-12-13 19:02:59,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=853, PETRI_PLACES=76, PETRI_TRANSITIONS=111} [2022-12-13 19:02:59,139 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2022-12-13 19:02:59,139 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 111 transitions, 853 flow [2022-12-13 19:02:59,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 522.3636363636364) internal successors, (5746), 11 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:02:59,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:02:59,141 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:02:59,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:02:59,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:02:59,342 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:02:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:59,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1812045435, now seen corresponding path program 1 times [2022-12-13 19:02:59,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:59,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227813554] [2022-12-13 19:02:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:59,704 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 19:02:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:59,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227813554] [2022-12-13 19:02:59,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227813554] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:02:59,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835134736] [2022-12-13 19:02:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:59,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:02:59,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:02:59,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:02:59,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:02:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:59,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 19:02:59,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:02:59,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:02:59,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:02:59,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 19:02:59,884 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 19:02:59,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:02:59,939 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:02:59,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-12-13 19:02:59,945 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:02:59,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2022-12-13 19:02:59,969 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 19:02:59,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835134736] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:02:59,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:02:59,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 19:02:59,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952449682] [2022-12-13 19:02:59,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:02:59,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:02:59,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:02:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=85, Unknown=1, NotChecked=0, Total=110 [2022-12-13 19:03:00,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 536 out of 1397 [2022-12-13 19:03:00,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 111 transitions, 853 flow. Second operand has 11 states, 11 states have (on average 537.3636363636364) internal successors, (5911), 11 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:00,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:00,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 536 of 1397 [2022-12-13 19:03:00,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:04,259 INFO L130 PetriNetUnfolder]: 9304/15017 cut-off events. [2022-12-13 19:03:04,259 INFO L131 PetriNetUnfolder]: For 20797/20797 co-relation queries the response was YES. [2022-12-13 19:03:04,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61303 conditions, 15017 events. 9304/15017 cut-off events. For 20797/20797 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 115790 event pairs, 2431 based on Foata normal form. 344/9455 useless extension candidates. Maximal degree in co-relation 61274. Up to 8313 conditions per place. [2022-12-13 19:03:04,316 INFO L137 encePairwiseOnDemand]: 1382/1397 looper letters, 168 selfloop transitions, 46 changer transitions 1/215 dead transitions. [2022-12-13 19:03:04,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 215 transitions, 1961 flow [2022-12-13 19:03:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:03:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:03:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5496 transitions. [2022-12-13 19:03:04,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39341445955619186 [2022-12-13 19:03:04,323 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5496 transitions. [2022-12-13 19:03:04,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5496 transitions. [2022-12-13 19:03:04,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:04,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5496 transitions. [2022-12-13 19:03:04,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 549.6) internal successors, (5496), 10 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:04,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1397.0) internal successors, (15367), 11 states have internal predecessors, (15367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:04,337 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1397.0) internal successors, (15367), 11 states have internal predecessors, (15367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:04,337 INFO L175 Difference]: Start difference. First operand has 76 places, 111 transitions, 853 flow. Second operand 10 states and 5496 transitions. [2022-12-13 19:03:04,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 215 transitions, 1961 flow [2022-12-13 19:03:04,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 215 transitions, 1947 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 19:03:04,362 INFO L231 Difference]: Finished difference. Result has 84 places, 125 transitions, 1047 flow [2022-12-13 19:03:04,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1047, PETRI_PLACES=84, PETRI_TRANSITIONS=125} [2022-12-13 19:03:04,363 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2022-12-13 19:03:04,363 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 125 transitions, 1047 flow [2022-12-13 19:03:04,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 537.3636363636364) internal successors, (5911), 11 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:04,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:04,364 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:04,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:03:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 19:03:04,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:04,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1777044467, now seen corresponding path program 1 times [2022-12-13 19:03:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:04,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216287787] [2022-12-13 19:03:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:04,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:04,752 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 19:03:04,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216287787] [2022-12-13 19:03:04,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216287787] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799318781] [2022-12-13 19:03:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:04,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:04,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:04,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:03:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:04,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:03:04,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:05,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 596 treesize of output 412 [2022-12-13 19:03:05,615 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 19:03:05,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:03:06,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 665 treesize of output 481 [2022-12-13 19:03:06,367 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 19:03:06,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799318781] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:06,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:03:06,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 5 [2022-12-13 19:03:06,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951953977] [2022-12-13 19:03:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:06,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:03:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:03:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:03:06,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:03:06,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 125 transitions, 1047 flow. Second operand has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:06,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:06,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:03:06,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:09,256 INFO L130 PetriNetUnfolder]: 8008/13037 cut-off events. [2022-12-13 19:03:09,257 INFO L131 PetriNetUnfolder]: For 25591/25591 co-relation queries the response was YES. [2022-12-13 19:03:09,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54878 conditions, 13037 events. 8008/13037 cut-off events. For 25591/25591 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 99824 event pairs, 3807 based on Foata normal form. 0/8439 useless extension candidates. Maximal degree in co-relation 54848. Up to 13037 conditions per place. [2022-12-13 19:03:09,302 INFO L137 encePairwiseOnDemand]: 1394/1397 looper letters, 118 selfloop transitions, 1 changer transitions 0/119 dead transitions. [2022-12-13 19:03:09,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1249 flow [2022-12-13 19:03:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:03:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:03:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1694 transitions. [2022-12-13 19:03:09,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4041994750656168 [2022-12-13 19:03:09,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1694 transitions. [2022-12-13 19:03:09,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1694 transitions. [2022-12-13 19:03:09,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:09,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1694 transitions. [2022-12-13 19:03:09,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:09,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:09,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:09,312 INFO L175 Difference]: Start difference. First operand has 84 places, 125 transitions, 1047 flow. Second operand 3 states and 1694 transitions. [2022-12-13 19:03:09,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1249 flow [2022-12-13 19:03:09,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1224 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 19:03:09,368 INFO L231 Difference]: Finished difference. Result has 81 places, 119 transitions, 988 flow [2022-12-13 19:03:09,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=988, PETRI_PLACES=81, PETRI_TRANSITIONS=119} [2022-12-13 19:03:09,369 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2022-12-13 19:03:09,369 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 119 transitions, 988 flow [2022-12-13 19:03:09,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:09,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:09,369 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:09,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 19:03:09,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 19:03:09,570 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:09,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:09,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1777044495, now seen corresponding path program 1 times [2022-12-13 19:03:09,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:09,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555706040] [2022-12-13 19:03:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:09,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,642 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 19:03:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:09,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555706040] [2022-12-13 19:03:09,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555706040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:09,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:09,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:03:09,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396830423] [2022-12-13 19:03:09,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:09,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:03:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:09,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:03:09,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:03:09,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:03:09,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 119 transitions, 988 flow. Second operand has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:09,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:09,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:03:09,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:12,953 INFO L130 PetriNetUnfolder]: 6712/11057 cut-off events. [2022-12-13 19:03:12,954 INFO L131 PetriNetUnfolder]: For 21015/21015 co-relation queries the response was YES. [2022-12-13 19:03:12,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45993 conditions, 11057 events. 6712/11057 cut-off events. For 21015/21015 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 83152 event pairs, 3291 based on Foata normal form. 0/7427 useless extension candidates. Maximal degree in co-relation 45963. Up to 11057 conditions per place. [2022-12-13 19:03:12,994 INFO L137 encePairwiseOnDemand]: 1394/1397 looper letters, 112 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2022-12-13 19:03:12,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 113 transitions, 1178 flow [2022-12-13 19:03:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:03:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:03:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1692 transitions. [2022-12-13 19:03:12,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4037222619899785 [2022-12-13 19:03:12,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1692 transitions. [2022-12-13 19:03:12,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1692 transitions. [2022-12-13 19:03:12,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:12,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1692 transitions. [2022-12-13 19:03:13,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 564.0) internal successors, (1692), 3 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:13,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:13,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:13,002 INFO L175 Difference]: Start difference. First operand has 81 places, 119 transitions, 988 flow. Second operand 3 states and 1692 transitions. [2022-12-13 19:03:13,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 113 transitions, 1178 flow [2022-12-13 19:03:13,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 113 transitions, 1177 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:03:13,034 INFO L231 Difference]: Finished difference. Result has 80 places, 113 transitions, 953 flow [2022-12-13 19:03:13,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=953, PETRI_PLACES=80, PETRI_TRANSITIONS=113} [2022-12-13 19:03:13,035 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2022-12-13 19:03:13,035 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 113 transitions, 953 flow [2022-12-13 19:03:13,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:13,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:13,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:13,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:03:13,036 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:13,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:13,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1777044450, now seen corresponding path program 1 times [2022-12-13 19:03:13,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:13,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628155254] [2022-12-13 19:03:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:13,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:13,089 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 19:03:13,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:13,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628155254] [2022-12-13 19:03:13,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628155254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:13,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:13,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:03:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946647495] [2022-12-13 19:03:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:13,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:03:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:03:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:03:13,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 1397 [2022-12-13 19:03:13,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 113 transitions, 953 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:13,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:13,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 1397 [2022-12-13 19:03:13,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:15,244 INFO L130 PetriNetUnfolder]: 6064/10067 cut-off events. [2022-12-13 19:03:15,245 INFO L131 PetriNetUnfolder]: For 19163/19163 co-relation queries the response was YES. [2022-12-13 19:03:15,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41682 conditions, 10067 events. 6064/10067 cut-off events. For 19163/19163 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 75417 event pairs, 3033 based on Foata normal form. 0/6921 useless extension candidates. Maximal degree in co-relation 41651. Up to 10067 conditions per place. [2022-12-13 19:03:15,278 INFO L137 encePairwiseOnDemand]: 1395/1397 looper letters, 109 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2022-12-13 19:03:15,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 110 transitions, 1155 flow [2022-12-13 19:03:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:03:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:03:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1693 transitions. [2022-12-13 19:03:15,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40396086852779767 [2022-12-13 19:03:15,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1693 transitions. [2022-12-13 19:03:15,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1693 transitions. [2022-12-13 19:03:15,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:15,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1693 transitions. [2022-12-13 19:03:15,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 564.3333333333334) internal successors, (1693), 3 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:15,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:15,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:15,285 INFO L175 Difference]: Start difference. First operand has 80 places, 113 transitions, 953 flow. Second operand 3 states and 1693 transitions. [2022-12-13 19:03:15,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 110 transitions, 1155 flow [2022-12-13 19:03:15,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 110 transitions, 1154 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:03:15,310 INFO L231 Difference]: Finished difference. Result has 80 places, 110 transitions, 936 flow [2022-12-13 19:03:15,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=80, PETRI_TRANSITIONS=110} [2022-12-13 19:03:15,310 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2022-12-13 19:03:15,311 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 110 transitions, 936 flow [2022-12-13 19:03:15,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:15,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:15,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:15,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:03:15,311 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1777044449, now seen corresponding path program 1 times [2022-12-13 19:03:15,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:15,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977088188] [2022-12-13 19:03:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:15,403 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 19:03:15,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:15,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977088188] [2022-12-13 19:03:15,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977088188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:15,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:15,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:03:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160627928] [2022-12-13 19:03:15,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:15,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:03:15,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:03:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:03:15,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 547 out of 1397 [2022-12-13 19:03:15,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 110 transitions, 936 flow. Second operand has 4 states, 4 states have (on average 548.75) internal successors, (2195), 4 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:15,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:15,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 547 of 1397 [2022-12-13 19:03:15,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:18,244 INFO L130 PetriNetUnfolder]: 6052/10049 cut-off events. [2022-12-13 19:03:18,244 INFO L131 PetriNetUnfolder]: For 22987/22987 co-relation queries the response was YES. [2022-12-13 19:03:18,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41619 conditions, 10049 events. 6052/10049 cut-off events. For 22987/22987 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 74159 event pairs, 3027 based on Foata normal form. 0/6915 useless extension candidates. Maximal degree in co-relation 41587. Up to 9867 conditions per place. [2022-12-13 19:03:18,279 INFO L137 encePairwiseOnDemand]: 1393/1397 looper letters, 128 selfloop transitions, 3 changer transitions 1/132 dead transitions. [2022-12-13 19:03:18,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 132 transitions, 1308 flow [2022-12-13 19:03:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:03:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:03:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2243 transitions. [2022-12-13 19:03:18,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40139584824624197 [2022-12-13 19:03:18,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2243 transitions. [2022-12-13 19:03:18,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2243 transitions. [2022-12-13 19:03:18,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:18,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2243 transitions. [2022-12-13 19:03:18,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 560.75) internal successors, (2243), 4 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:18,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1397.0) internal successors, (6985), 5 states have internal predecessors, (6985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:18,288 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1397.0) internal successors, (6985), 5 states have internal predecessors, (6985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:18,288 INFO L175 Difference]: Start difference. First operand has 80 places, 110 transitions, 936 flow. Second operand 4 states and 2243 transitions. [2022-12-13 19:03:18,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 132 transitions, 1308 flow [2022-12-13 19:03:18,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 1307 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:03:18,321 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 946 flow [2022-12-13 19:03:18,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=946, PETRI_PLACES=83, PETRI_TRANSITIONS=110} [2022-12-13 19:03:18,321 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2022-12-13 19:03:18,321 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 946 flow [2022-12-13 19:03:18,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 548.75) internal successors, (2195), 4 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:18,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:18,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:18,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:03:18,322 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1777044647, now seen corresponding path program 1 times [2022-12-13 19:03:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:18,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680959348] [2022-12-13 19:03:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:18,437 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 19:03:18,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680959348] [2022-12-13 19:03:18,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680959348] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961263196] [2022-12-13 19:03:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:18,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:18,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:18,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:18,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:03:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:18,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:03:18,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:18,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 596 treesize of output 412 [2022-12-13 19:03:18,952 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 19:03:18,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:03:19,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 665 treesize of output 481 [2022-12-13 19:03:19,657 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 19:03:19,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961263196] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:19,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:03:19,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 6 [2022-12-13 19:03:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897864685] [2022-12-13 19:03:19,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:19,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:03:19,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:03:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:03:19,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:03:19,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 110 transitions, 946 flow. Second operand has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:19,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:19,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:03:19,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:21,824 INFO L130 PetriNetUnfolder]: 5404/9059 cut-off events. [2022-12-13 19:03:21,824 INFO L131 PetriNetUnfolder]: For 17908/17908 co-relation queries the response was YES. [2022-12-13 19:03:21,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37487 conditions, 9059 events. 5404/9059 cut-off events. For 17908/17908 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 67327 event pairs, 2769 based on Foata normal form. 0/6585 useless extension candidates. Maximal degree in co-relation 37453. Up to 9059 conditions per place. [2022-12-13 19:03:21,855 INFO L137 encePairwiseOnDemand]: 1395/1397 looper letters, 106 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2022-12-13 19:03:21,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 1142 flow [2022-12-13 19:03:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:03:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:03:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1689 transitions. [2022-12-13 19:03:21,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4030064423765211 [2022-12-13 19:03:21,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1689 transitions. [2022-12-13 19:03:21,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1689 transitions. [2022-12-13 19:03:21,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:21,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1689 transitions. [2022-12-13 19:03:21,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 563.0) internal successors, (1689), 3 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:21,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:21,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:21,861 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 946 flow. Second operand 3 states and 1689 transitions. [2022-12-13 19:03:21,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 1142 flow [2022-12-13 19:03:21,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 1138 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:03:21,887 INFO L231 Difference]: Finished difference. Result has 83 places, 107 transitions, 926 flow [2022-12-13 19:03:21,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=926, PETRI_PLACES=83, PETRI_TRANSITIONS=107} [2022-12-13 19:03:21,887 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2022-12-13 19:03:21,887 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 107 transitions, 926 flow [2022-12-13 19:03:21,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:21,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:21,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:21,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:03:22,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 19:03:22,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1777044578, now seen corresponding path program 1 times [2022-12-13 19:03:22,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:22,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561416844] [2022-12-13 19:03:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:22,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:22,229 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 19:03:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:22,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561416844] [2022-12-13 19:03:22,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561416844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:22,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:22,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:03:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19033482] [2022-12-13 19:03:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:03:22,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:03:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:03:22,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 1397 [2022-12-13 19:03:22,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 107 transitions, 926 flow. Second operand has 5 states, 5 states have (on average 546.4) internal successors, (2732), 5 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:22,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:22,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 1397 [2022-12-13 19:03:22,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:24,399 INFO L130 PetriNetUnfolder]: 5320/8933 cut-off events. [2022-12-13 19:03:24,399 INFO L131 PetriNetUnfolder]: For 21759/21759 co-relation queries the response was YES. [2022-12-13 19:03:24,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37062 conditions, 8933 events. 5320/8933 cut-off events. For 21759/21759 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 65975 event pairs, 2067 based on Foata normal form. 12/6525 useless extension candidates. Maximal degree in co-relation 37027. Up to 7027 conditions per place. [2022-12-13 19:03:24,429 INFO L137 encePairwiseOnDemand]: 1386/1397 looper letters, 150 selfloop transitions, 7 changer transitions 1/158 dead transitions. [2022-12-13 19:03:24,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 158 transitions, 1707 flow [2022-12-13 19:03:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:03:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:03:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2796 transitions. [2022-12-13 19:03:24,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.400286327845383 [2022-12-13 19:03:24,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2796 transitions. [2022-12-13 19:03:24,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2796 transitions. [2022-12-13 19:03:24,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:24,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2796 transitions. [2022-12-13 19:03:24,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 559.2) internal successors, (2796), 5 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:24,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1397.0) internal successors, (8382), 6 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:24,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1397.0) internal successors, (8382), 6 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:24,440 INFO L175 Difference]: Start difference. First operand has 83 places, 107 transitions, 926 flow. Second operand 5 states and 2796 transitions. [2022-12-13 19:03:24,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 158 transitions, 1707 flow [2022-12-13 19:03:24,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 158 transitions, 1704 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:03:24,464 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 964 flow [2022-12-13 19:03:24,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=964, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2022-12-13 19:03:24,464 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2022-12-13 19:03:24,464 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 964 flow [2022-12-13 19:03:24,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 546.4) internal successors, (2732), 5 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:24,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:24,465 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:03:24,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:03:24,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:24,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:24,465 INFO L85 PathProgramCache]: Analyzing trace with hash -334418812, now seen corresponding path program 1 times [2022-12-13 19:03:24,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:24,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157521108] [2022-12-13 19:03:24,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:24,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:24,515 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 19:03:24,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:24,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157521108] [2022-12-13 19:03:24,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157521108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:24,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:24,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:03:24,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146004842] [2022-12-13 19:03:24,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:24,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:03:24,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:24,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:03:24,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:03:24,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:03:24,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 964 flow. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:24,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:24,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:03:24,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:26,162 INFO L130 PetriNetUnfolder]: 4036/6965 cut-off events. [2022-12-13 19:03:26,162 INFO L131 PetriNetUnfolder]: For 16908/16908 co-relation queries the response was YES. [2022-12-13 19:03:26,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30295 conditions, 6965 events. 4036/6965 cut-off events. For 16908/16908 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 51349 event pairs, 2211 based on Foata normal form. 422/5863 useless extension candidates. Maximal degree in co-relation 30257. Up to 6965 conditions per place. [2022-12-13 19:03:26,189 INFO L137 encePairwiseOnDemand]: 1394/1397 looper letters, 97 selfloop transitions, 1 changer transitions 3/101 dead transitions. [2022-12-13 19:03:26,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 101 transitions, 1111 flow [2022-12-13 19:03:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:03:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:03:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1688 transitions. [2022-12-13 19:03:26,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40276783583870196 [2022-12-13 19:03:26,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1688 transitions. [2022-12-13 19:03:26,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1688 transitions. [2022-12-13 19:03:26,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:26,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1688 transitions. [2022-12-13 19:03:26,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 562.6666666666666) internal successors, (1688), 3 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:26,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:26,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:26,195 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 964 flow. Second operand 3 states and 1688 transitions. [2022-12-13 19:03:26,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 101 transitions, 1111 flow [2022-12-13 19:03:26,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1105 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:03:26,219 INFO L231 Difference]: Finished difference. Result has 86 places, 98 transitions, 884 flow [2022-12-13 19:03:26,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=884, PETRI_PLACES=86, PETRI_TRANSITIONS=98} [2022-12-13 19:03:26,219 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2022-12-13 19:03:26,219 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 98 transitions, 884 flow [2022-12-13 19:03:26,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:26,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:26,219 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:03:26,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:03:26,220 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:26,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash -338836694, now seen corresponding path program 1 times [2022-12-13 19:03:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:26,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268632218] [2022-12-13 19:03:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:26,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:26,439 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 19:03:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:26,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268632218] [2022-12-13 19:03:26,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268632218] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:26,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176219419] [2022-12-13 19:03:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:26,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:26,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:26,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:03:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:26,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:03:26,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:26,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:03:26,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:03:26,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:03:26,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:03:26,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:03:26,660 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 19:03:26,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:03:26,680 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_312 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_312) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) is different from false [2022-12-13 19:03:26,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:03:26,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 19:03:26,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:03:26,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 71 [2022-12-13 19:03:26,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-13 19:03:26,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-12-13 19:03:26,786 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 19:03:26,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176219419] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:03:26,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:03:26,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-12-13 19:03:26,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855826742] [2022-12-13 19:03:26,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:03:26,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:03:26,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:26,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:03:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=4, NotChecked=22, Total=182 [2022-12-13 19:03:26,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 509 out of 1397 [2022-12-13 19:03:26,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 98 transitions, 884 flow. Second operand has 14 states, 14 states have (on average 510.2857142857143) internal successors, (7144), 14 states have internal predecessors, (7144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:26,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:26,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 509 of 1397 [2022-12-13 19:03:26,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:28,931 INFO L130 PetriNetUnfolder]: 3617/6415 cut-off events. [2022-12-13 19:03:28,931 INFO L131 PetriNetUnfolder]: For 15420/15420 co-relation queries the response was YES. [2022-12-13 19:03:28,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27108 conditions, 6415 events. 3617/6415 cut-off events. For 15420/15420 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 48246 event pairs, 884 based on Foata normal form. 240/5299 useless extension candidates. Maximal degree in co-relation 27070. Up to 2327 conditions per place. [2022-12-13 19:03:28,955 INFO L137 encePairwiseOnDemand]: 1380/1397 looper letters, 170 selfloop transitions, 61 changer transitions 0/231 dead transitions. [2022-12-13 19:03:28,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 231 transitions, 2288 flow [2022-12-13 19:03:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:03:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:03:28,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4718 transitions. [2022-12-13 19:03:28,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3752485484768949 [2022-12-13 19:03:28,960 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4718 transitions. [2022-12-13 19:03:28,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4718 transitions. [2022-12-13 19:03:28,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:28,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4718 transitions. [2022-12-13 19:03:28,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 524.2222222222222) internal successors, (4718), 9 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:28,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:28,971 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:28,971 INFO L175 Difference]: Start difference. First operand has 86 places, 98 transitions, 884 flow. Second operand 9 states and 4718 transitions. [2022-12-13 19:03:28,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 231 transitions, 2288 flow [2022-12-13 19:03:29,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 231 transitions, 2211 flow, removed 30 selfloop flow, removed 6 redundant places. [2022-12-13 19:03:29,084 INFO L231 Difference]: Finished difference. Result has 90 places, 117 transitions, 1311 flow [2022-12-13 19:03:29,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=90, PETRI_TRANSITIONS=117} [2022-12-13 19:03:29,085 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2022-12-13 19:03:29,085 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 117 transitions, 1311 flow [2022-12-13 19:03:29,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 510.2857142857143) internal successors, (7144), 14 states have internal predecessors, (7144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:29,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:29,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:03:29,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:03:29,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 19:03:29,287 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:29,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:29,288 INFO L85 PathProgramCache]: Analyzing trace with hash -338836626, now seen corresponding path program 1 times [2022-12-13 19:03:29,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:29,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204178142] [2022-12-13 19:03:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:29,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:29,545 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 19:03:29,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204178142] [2022-12-13 19:03:29,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204178142] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162198321] [2022-12-13 19:03:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:29,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:29,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:29,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:03:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:29,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:03:29,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:29,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:03:29,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:03:29,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 19:03:29,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:03:29,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 19:03:29,744 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 19:03:29,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:03:29,762 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_346) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 4294967296)) is different from false [2022-12-13 19:03:29,803 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:03:29,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-12-13 19:03:29,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:03:29,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 119 [2022-12-13 19:03:29,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2022-12-13 19:03:29,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-12-13 19:03:29,861 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 19:03:29,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162198321] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:03:29,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:03:29,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-12-13 19:03:29,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933759094] [2022-12-13 19:03:29,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:03:29,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:03:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:03:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=125, Unknown=2, NotChecked=22, Total=182 [2022-12-13 19:03:29,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 509 out of 1397 [2022-12-13 19:03:29,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 117 transitions, 1311 flow. Second operand has 14 states, 14 states have (on average 510.2857142857143) internal successors, (7144), 14 states have internal predecessors, (7144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:29,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:29,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 509 of 1397 [2022-12-13 19:03:29,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:31,832 INFO L130 PetriNetUnfolder]: 3441/6119 cut-off events. [2022-12-13 19:03:31,833 INFO L131 PetriNetUnfolder]: For 16913/16913 co-relation queries the response was YES. [2022-12-13 19:03:31,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26730 conditions, 6119 events. 3441/6119 cut-off events. For 16913/16913 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 46673 event pairs, 724 based on Foata normal form. 120/4803 useless extension candidates. Maximal degree in co-relation 26692. Up to 2327 conditions per place. [2022-12-13 19:03:31,855 INFO L137 encePairwiseOnDemand]: 1382/1397 looper letters, 166 selfloop transitions, 61 changer transitions 0/227 dead transitions. [2022-12-13 19:03:31,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 227 transitions, 2390 flow [2022-12-13 19:03:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:03:31,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:03:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4710 transitions. [2022-12-13 19:03:31,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3746122643760439 [2022-12-13 19:03:31,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4710 transitions. [2022-12-13 19:03:31,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4710 transitions. [2022-12-13 19:03:31,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:31,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4710 transitions. [2022-12-13 19:03:31,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 523.3333333333334) internal successors, (4710), 9 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:31,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:31,870 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:31,870 INFO L175 Difference]: Start difference. First operand has 90 places, 117 transitions, 1311 flow. Second operand 9 states and 4710 transitions. [2022-12-13 19:03:31,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 227 transitions, 2390 flow [2022-12-13 19:03:31,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 227 transitions, 2323 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 19:03:31,899 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 1372 flow [2022-12-13 19:03:31,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1372, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2022-12-13 19:03:31,900 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 22 predicate places. [2022-12-13 19:03:31,900 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 1372 flow [2022-12-13 19:03:31,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 510.2857142857143) internal successors, (7144), 14 states have internal predecessors, (7144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:31,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:31,900 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 19:03:31,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:03:32,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:32,102 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:32,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:32,103 INFO L85 PathProgramCache]: Analyzing trace with hash -338984743, now seen corresponding path program 2 times [2022-12-13 19:03:32,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:32,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060674035] [2022-12-13 19:03:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:32,179 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 19:03:32,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:32,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060674035] [2022-12-13 19:03:32,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060674035] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:32,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351988434] [2022-12-13 19:03:32,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:03:32,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:32,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:32,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:03:32,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:03:32,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:03:32,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:03:32,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:32,303 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 19:03:32,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:03:32,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351988434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:32,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:03:32,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 19:03:32,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294723242] [2022-12-13 19:03:32,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:32,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:03:32,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:32,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:03:32,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:03:32,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 553 out of 1397 [2022-12-13 19:03:32,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 1372 flow. Second operand has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:32,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:32,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 553 of 1397 [2022-12-13 19:03:32,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:33,976 INFO L130 PetriNetUnfolder]: 3441/6118 cut-off events. [2022-12-13 19:03:33,976 INFO L131 PetriNetUnfolder]: For 17166/17166 co-relation queries the response was YES. [2022-12-13 19:03:33,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26860 conditions, 6118 events. 3441/6118 cut-off events. For 17166/17166 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 46631 event pairs, 1896 based on Foata normal form. 1/4683 useless extension candidates. Maximal degree in co-relation 26824. Up to 6118 conditions per place. [2022-12-13 19:03:34,002 INFO L137 encePairwiseOnDemand]: 1395/1397 looper letters, 115 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2022-12-13 19:03:34,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 1594 flow [2022-12-13 19:03:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:03:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:03:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1692 transitions. [2022-12-13 19:03:34,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4037222619899785 [2022-12-13 19:03:34,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1692 transitions. [2022-12-13 19:03:34,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1692 transitions. [2022-12-13 19:03:34,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:34,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1692 transitions. [2022-12-13 19:03:34,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 564.0) internal successors, (1692), 3 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:34,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:34,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:34,009 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 1372 flow. Second operand 3 states and 1692 transitions. [2022-12-13 19:03:34,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 1594 flow [2022-12-13 19:03:34,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 116 transitions, 1541 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-12-13 19:03:34,035 INFO L231 Difference]: Finished difference. Result has 85 places, 116 transitions, 1311 flow [2022-12-13 19:03:34,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1311, PETRI_PLACES=85, PETRI_TRANSITIONS=116} [2022-12-13 19:03:34,036 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2022-12-13 19:03:34,036 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 116 transitions, 1311 flow [2022-12-13 19:03:34,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:34,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:34,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:34,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:03:34,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:34,237 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1913786445, now seen corresponding path program 1 times [2022-12-13 19:03:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:34,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088417463] [2022-12-13 19:03:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:03:34,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:34,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088417463] [2022-12-13 19:03:34,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088417463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:34,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:34,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:03:34,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150816338] [2022-12-13 19:03:34,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:34,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:03:34,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:34,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:03:34,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:03:34,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 1397 [2022-12-13 19:03:34,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 116 transitions, 1311 flow. Second operand has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:34,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:34,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 1397 [2022-12-13 19:03:34,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:36,572 INFO L130 PetriNetUnfolder]: 4865/8242 cut-off events. [2022-12-13 19:03:36,572 INFO L131 PetriNetUnfolder]: For 22601/22601 co-relation queries the response was YES. [2022-12-13 19:03:36,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37265 conditions, 8242 events. 4865/8242 cut-off events. For 22601/22601 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 62048 event pairs, 909 based on Foata normal form. 88/6438 useless extension candidates. Maximal degree in co-relation 37235. Up to 3354 conditions per place. [2022-12-13 19:03:36,623 INFO L137 encePairwiseOnDemand]: 1381/1397 looper letters, 104 selfloop transitions, 97 changer transitions 0/201 dead transitions. [2022-12-13 19:03:36,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 201 transitions, 2440 flow [2022-12-13 19:03:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:03:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:03:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2794 transitions. [2022-12-13 19:03:36,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-13 19:03:36,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2794 transitions. [2022-12-13 19:03:36,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2794 transitions. [2022-12-13 19:03:36,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:36,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2794 transitions. [2022-12-13 19:03:36,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 558.8) internal successors, (2794), 5 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:36,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1397.0) internal successors, (8382), 6 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:36,641 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1397.0) internal successors, (8382), 6 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:36,641 INFO L175 Difference]: Start difference. First operand has 85 places, 116 transitions, 1311 flow. Second operand 5 states and 2794 transitions. [2022-12-13 19:03:36,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 201 transitions, 2440 flow [2022-12-13 19:03:36,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 201 transitions, 2439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:03:36,689 INFO L231 Difference]: Finished difference. Result has 92 places, 152 transitions, 2182 flow [2022-12-13 19:03:36,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2182, PETRI_PLACES=92, PETRI_TRANSITIONS=152} [2022-12-13 19:03:36,690 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2022-12-13 19:03:36,690 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 152 transitions, 2182 flow [2022-12-13 19:03:36,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:36,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:36,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:36,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 19:03:36,691 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1913786307, now seen corresponding path program 1 times [2022-12-13 19:03:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:36,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364815881] [2022-12-13 19:03:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:36,812 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 19:03:36,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:36,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364815881] [2022-12-13 19:03:36,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364815881] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:36,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028002365] [2022-12-13 19:03:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:36,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:36,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:36,814 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:36,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:03:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:36,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:03:36,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:37,070 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 19:03:37,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:03:37,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 476 treesize of output 452 [2022-12-13 19:03:37,459 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 19:03:37,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028002365] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:03:37,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:03:37,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-12-13 19:03:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92220058] [2022-12-13 19:03:37,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:03:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:03:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:03:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:03:37,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 535 out of 1397 [2022-12-13 19:03:37,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 152 transitions, 2182 flow. Second operand has 13 states, 13 states have (on average 536.5384615384615) internal successors, (6975), 13 states have internal predecessors, (6975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:37,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:37,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 535 of 1397 [2022-12-13 19:03:37,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:39,359 INFO L130 PetriNetUnfolder]: 3880/6602 cut-off events. [2022-12-13 19:03:39,360 INFO L131 PetriNetUnfolder]: For 29978/29978 co-relation queries the response was YES. [2022-12-13 19:03:39,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33334 conditions, 6602 events. 3880/6602 cut-off events. For 29978/29978 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 47948 event pairs, 1693 based on Foata normal form. 175/5294 useless extension candidates. Maximal degree in co-relation 33299. Up to 5213 conditions per place. [2022-12-13 19:03:39,386 INFO L137 encePairwiseOnDemand]: 1383/1397 looper letters, 155 selfloop transitions, 21 changer transitions 1/177 dead transitions. [2022-12-13 19:03:39,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 177 transitions, 2203 flow [2022-12-13 19:03:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:03:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 19:03:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4372 transitions. [2022-12-13 19:03:39,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3911954187544739 [2022-12-13 19:03:39,390 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4372 transitions. [2022-12-13 19:03:39,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4372 transitions. [2022-12-13 19:03:39,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:39,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4372 transitions. [2022-12-13 19:03:39,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 546.5) internal successors, (4372), 8 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:39,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1397.0) internal successors, (12573), 9 states have internal predecessors, (12573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:39,399 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1397.0) internal successors, (12573), 9 states have internal predecessors, (12573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:39,399 INFO L175 Difference]: Start difference. First operand has 92 places, 152 transitions, 2182 flow. Second operand 8 states and 4372 transitions. [2022-12-13 19:03:39,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 177 transitions, 2203 flow [2022-12-13 19:03:39,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 177 transitions, 2187 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:03:39,454 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1672 flow [2022-12-13 19:03:39,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1672, PETRI_PLACES=98, PETRI_TRANSITIONS=127} [2022-12-13 19:03:39,455 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 26 predicate places. [2022-12-13 19:03:39,455 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1672 flow [2022-12-13 19:03:39,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 536.5384615384615) internal successors, (6975), 13 states have internal predecessors, (6975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:39,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:39,455 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:39,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:03:39,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:39,657 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:39,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:39,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1914021010, now seen corresponding path program 1 times [2022-12-13 19:03:39,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:39,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605200970] [2022-12-13 19:03:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:39,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:39,718 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 19:03:39,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:39,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605200970] [2022-12-13 19:03:39,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605200970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:39,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:39,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:03:39,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509606761] [2022-12-13 19:03:39,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:39,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:03:39,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:03:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:03:39,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1397 [2022-12-13 19:03:39,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 127 transitions, 1672 flow. Second operand has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:39,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:39,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1397 [2022-12-13 19:03:39,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:42,085 INFO L130 PetriNetUnfolder]: 5696/9362 cut-off events. [2022-12-13 19:03:42,085 INFO L131 PetriNetUnfolder]: For 57965/57965 co-relation queries the response was YES. [2022-12-13 19:03:42,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49324 conditions, 9362 events. 5696/9362 cut-off events. For 57965/57965 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 68679 event pairs, 1536 based on Foata normal form. 0/7909 useless extension candidates. Maximal degree in co-relation 49283. Up to 5421 conditions per place. [2022-12-13 19:03:42,128 INFO L137 encePairwiseOnDemand]: 1392/1397 looper letters, 212 selfloop transitions, 10 changer transitions 0/222 dead transitions. [2022-12-13 19:03:42,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 222 transitions, 3417 flow [2022-12-13 19:03:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:03:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:03:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1711 transitions. [2022-12-13 19:03:42,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40825578620854214 [2022-12-13 19:03:42,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1711 transitions. [2022-12-13 19:03:42,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1711 transitions. [2022-12-13 19:03:42,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:42,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1711 transitions. [2022-12-13 19:03:42,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 570.3333333333334) internal successors, (1711), 3 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:42,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:42,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1397.0) internal successors, (5588), 4 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:42,134 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1672 flow. Second operand 3 states and 1711 transitions. [2022-12-13 19:03:42,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 222 transitions, 3417 flow [2022-12-13 19:03:42,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 222 transitions, 3395 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 19:03:42,271 INFO L231 Difference]: Finished difference. Result has 100 places, 136 transitions, 1786 flow [2022-12-13 19:03:42,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1786, PETRI_PLACES=100, PETRI_TRANSITIONS=136} [2022-12-13 19:03:42,272 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 28 predicate places. [2022-12-13 19:03:42,272 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 136 transitions, 1786 flow [2022-12-13 19:03:42,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:42,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:42,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 19:03:42,272 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 794895092, now seen corresponding path program 1 times [2022-12-13 19:03:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:42,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227628692] [2022-12-13 19:03:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:42,434 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 19:03:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:42,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227628692] [2022-12-13 19:03:42,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227628692] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:42,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102069596] [2022-12-13 19:03:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:42,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:42,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:42,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:42,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:03:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:42,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 19:03:42,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:42,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 299 treesize of output 243 [2022-12-13 19:03:42,804 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 19:03:42,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:03:43,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 665 treesize of output 481 [2022-12-13 19:03:43,437 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 19:03:43,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102069596] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:03:43,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:03:43,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2022-12-13 19:03:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160704856] [2022-12-13 19:03:43,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:03:43,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:03:43,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:03:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:03:43,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 534 out of 1397 [2022-12-13 19:03:43,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 136 transitions, 1786 flow. Second operand has 11 states, 11 states have (on average 536.1818181818181) internal successors, (5898), 11 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:43,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:43,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 534 of 1397 [2022-12-13 19:03:43,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:47,366 INFO L130 PetriNetUnfolder]: 7174/12218 cut-off events. [2022-12-13 19:03:47,367 INFO L131 PetriNetUnfolder]: For 89325/89325 co-relation queries the response was YES. [2022-12-13 19:03:47,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66047 conditions, 12218 events. 7174/12218 cut-off events. For 89325/89325 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 97305 event pairs, 1131 based on Foata normal form. 1216/11941 useless extension candidates. Maximal degree in co-relation 66003. Up to 3802 conditions per place. [2022-12-13 19:03:47,423 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 473 selfloop transitions, 34 changer transitions 12/519 dead transitions. [2022-12-13 19:03:47,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 519 transitions, 8060 flow [2022-12-13 19:03:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 19:03:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 19:03:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 8777 transitions. [2022-12-13 19:03:47,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3926717967072298 [2022-12-13 19:03:47,430 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 8777 transitions. [2022-12-13 19:03:47,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 8777 transitions. [2022-12-13 19:03:47,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:47,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 8777 transitions. [2022-12-13 19:03:47,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 548.5625) internal successors, (8777), 16 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:47,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1397.0) internal successors, (23749), 17 states have internal predecessors, (23749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:47,454 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1397.0) internal successors, (23749), 17 states have internal predecessors, (23749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:47,454 INFO L175 Difference]: Start difference. First operand has 100 places, 136 transitions, 1786 flow. Second operand 16 states and 8777 transitions. [2022-12-13 19:03:47,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 519 transitions, 8060 flow [2022-12-13 19:03:47,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 519 transitions, 8042 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:03:47,652 INFO L231 Difference]: Finished difference. Result has 118 places, 150 transitions, 1992 flow [2022-12-13 19:03:47,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1992, PETRI_PLACES=118, PETRI_TRANSITIONS=150} [2022-12-13 19:03:47,653 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 46 predicate places. [2022-12-13 19:03:47,653 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 150 transitions, 1992 flow [2022-12-13 19:03:47,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 536.1818181818181) internal successors, (5898), 11 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:47,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:47,654 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:47,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 19:03:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 19:03:47,855 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1914021053, now seen corresponding path program 1 times [2022-12-13 19:03:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:47,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044608641] [2022-12-13 19:03:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:48,118 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 19:03:48,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:48,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044608641] [2022-12-13 19:03:48,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044608641] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:48,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516334166] [2022-12-13 19:03:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:48,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:48,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:48,120 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:48,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:03:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:48,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:03:48,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:48,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:03:48,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:03:48,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 19:03:48,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:03:48,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 19:03:48,327 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 19:03:48,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:03:48,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:03:48,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-12-13 19:03:48,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:03:48,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 61 [2022-12-13 19:03:48,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-12-13 19:03:48,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-12-13 19:03:48,458 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 19:03:48,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516334166] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:03:48,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:03:48,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-12-13 19:03:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022060172] [2022-12-13 19:03:48,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:03:48,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:03:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:03:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=142, Unknown=5, NotChecked=0, Total=182 [2022-12-13 19:03:49,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 534 out of 1397 [2022-12-13 19:03:49,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 150 transitions, 1992 flow. Second operand has 14 states, 14 states have (on average 535.5) internal successors, (7497), 14 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:49,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:49,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 534 of 1397 [2022-12-13 19:03:49,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:52,724 INFO L130 PetriNetUnfolder]: 6797/11547 cut-off events. [2022-12-13 19:03:52,724 INFO L131 PetriNetUnfolder]: For 82991/82991 co-relation queries the response was YES. [2022-12-13 19:03:52,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69907 conditions, 11547 events. 6797/11547 cut-off events. For 82991/82991 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 91219 event pairs, 1112 based on Foata normal form. 0/10028 useless extension candidates. Maximal degree in co-relation 69858. Up to 4534 conditions per place. [2022-12-13 19:03:52,785 INFO L137 encePairwiseOnDemand]: 1388/1397 looper letters, 237 selfloop transitions, 31 changer transitions 0/268 dead transitions. [2022-12-13 19:03:52,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 268 transitions, 4075 flow [2022-12-13 19:03:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:03:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:03:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4919 transitions. [2022-12-13 19:03:52,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39123518651077704 [2022-12-13 19:03:52,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4919 transitions. [2022-12-13 19:03:52,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4919 transitions. [2022-12-13 19:03:52,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:52,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4919 transitions. [2022-12-13 19:03:52,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 546.5555555555555) internal successors, (4919), 9 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:52,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:52,802 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:52,802 INFO L175 Difference]: Start difference. First operand has 118 places, 150 transitions, 1992 flow. Second operand 9 states and 4919 transitions. [2022-12-13 19:03:52,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 268 transitions, 4075 flow [2022-12-13 19:03:53,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 268 transitions, 4046 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 19:03:53,034 INFO L231 Difference]: Finished difference. Result has 126 places, 154 transitions, 2107 flow [2022-12-13 19:03:53,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2107, PETRI_PLACES=126, PETRI_TRANSITIONS=154} [2022-12-13 19:03:53,035 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 54 predicate places. [2022-12-13 19:03:53,035 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 154 transitions, 2107 flow [2022-12-13 19:03:53,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 535.5) internal successors, (7497), 14 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:53,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:53,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:53,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 19:03:53,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 19:03:53,237 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:53,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1914021085, now seen corresponding path program 1 times [2022-12-13 19:03:53,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:53,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167512079] [2022-12-13 19:03:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:53,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:53,481 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 19:03:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:53,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167512079] [2022-12-13 19:03:53,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167512079] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:03:53,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559988515] [2022-12-13 19:03:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:03:53,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:03:53,482 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:03:53,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:03:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:53,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:03:53,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:03:53,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:03:53,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:03:53,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:03:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:03:53,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:03:53,711 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 19:03:53,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:03:53,729 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_536 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_536) c_~A~0.base) (+ c_~A~0.offset (* c_~j~0 4))) 9223372039002259456))) is different from false [2022-12-13 19:03:53,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:03:53,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 19:03:53,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:03:53,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 137 [2022-12-13 19:03:53,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2022-12-13 19:03:53,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-12-13 19:03:53,830 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 19:03:53,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559988515] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:03:53,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:03:53,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-12-13 19:03:53,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927545948] [2022-12-13 19:03:53,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:03:53,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:03:53,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:53,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:03:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=125, Unknown=2, NotChecked=22, Total=182 [2022-12-13 19:03:53,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 509 out of 1397 [2022-12-13 19:03:53,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 154 transitions, 2107 flow. Second operand has 14 states, 14 states have (on average 510.5) internal successors, (7147), 14 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:53,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:53,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 509 of 1397 [2022-12-13 19:03:53,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:03:57,454 INFO L130 PetriNetUnfolder]: 6420/10876 cut-off events. [2022-12-13 19:03:57,454 INFO L131 PetriNetUnfolder]: For 87842/87842 co-relation queries the response was YES. [2022-12-13 19:03:57,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71248 conditions, 10876 events. 6420/10876 cut-off events. For 87842/87842 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 84477 event pairs, 811 based on Foata normal form. 262/10337 useless extension candidates. Maximal degree in co-relation 71196. Up to 4534 conditions per place. [2022-12-13 19:03:57,516 INFO L137 encePairwiseOnDemand]: 1388/1397 looper letters, 233 selfloop transitions, 31 changer transitions 0/264 dead transitions. [2022-12-13 19:03:57,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 264 transitions, 4126 flow [2022-12-13 19:03:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:03:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:03:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4692 transitions. [2022-12-13 19:03:57,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3731806251491291 [2022-12-13 19:03:57,520 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4692 transitions. [2022-12-13 19:03:57,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4692 transitions. [2022-12-13 19:03:57,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:03:57,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4692 transitions. [2022-12-13 19:03:57,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 521.3333333333334) internal successors, (4692), 9 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:57,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:57,530 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:57,530 INFO L175 Difference]: Start difference. First operand has 126 places, 154 transitions, 2107 flow. Second operand 9 states and 4692 transitions. [2022-12-13 19:03:57,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 264 transitions, 4126 flow [2022-12-13 19:03:57,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 264 transitions, 4048 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-12-13 19:03:57,742 INFO L231 Difference]: Finished difference. Result has 125 places, 154 transitions, 2103 flow [2022-12-13 19:03:57,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2103, PETRI_PLACES=125, PETRI_TRANSITIONS=154} [2022-12-13 19:03:57,742 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 53 predicate places. [2022-12-13 19:03:57,742 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 154 transitions, 2103 flow [2022-12-13 19:03:57,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 510.5) internal successors, (7147), 14 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:57,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:03:57,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:57,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:03:57,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 19:03:57,944 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:03:57,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:57,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1913786305, now seen corresponding path program 1 times [2022-12-13 19:03:57,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:57,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885021260] [2022-12-13 19:03:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:57,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:03:58,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:58,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885021260] [2022-12-13 19:03:58,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885021260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:58,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:58,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:03:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894568226] [2022-12-13 19:03:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:58,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:03:58,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:03:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:03:58,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 1397 [2022-12-13 19:03:58,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 154 transitions, 2103 flow. Second operand has 4 states, 4 states have (on average 528.75) internal successors, (2115), 4 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:03:58,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:03:58,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 1397 [2022-12-13 19:03:58,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:04:02,287 INFO L130 PetriNetUnfolder]: 6331/10957 cut-off events. [2022-12-13 19:04:02,288 INFO L131 PetriNetUnfolder]: For 74165/74165 co-relation queries the response was YES. [2022-12-13 19:04:02,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70500 conditions, 10957 events. 6331/10957 cut-off events. For 74165/74165 co-relation queries the response was YES. Maximal size of possible extension queue 1251. Compared 89054 event pairs, 1510 based on Foata normal form. 128/10368 useless extension candidates. Maximal degree in co-relation 70453. Up to 4892 conditions per place. [2022-12-13 19:04:02,349 INFO L137 encePairwiseOnDemand]: 1381/1397 looper letters, 179 selfloop transitions, 67 changer transitions 1/247 dead transitions. [2022-12-13 19:04:02,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 247 transitions, 3643 flow [2022-12-13 19:04:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:04:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:04:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2713 transitions. [2022-12-13 19:04:02,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38840372226199 [2022-12-13 19:04:02,352 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2713 transitions. [2022-12-13 19:04:02,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2713 transitions. [2022-12-13 19:04:02,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:04:02,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2713 transitions. [2022-12-13 19:04:02,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 542.6) internal successors, (2713), 5 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:02,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1397.0) internal successors, (8382), 6 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:02,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1397.0) internal successors, (8382), 6 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:02,358 INFO L175 Difference]: Start difference. First operand has 125 places, 154 transitions, 2103 flow. Second operand 5 states and 2713 transitions. [2022-12-13 19:04:02,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 247 transitions, 3643 flow [2022-12-13 19:04:02,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 247 transitions, 3562 flow, removed 22 selfloop flow, removed 6 redundant places. [2022-12-13 19:04:02,587 INFO L231 Difference]: Finished difference. Result has 125 places, 151 transitions, 2198 flow [2022-12-13 19:04:02,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2198, PETRI_PLACES=125, PETRI_TRANSITIONS=151} [2022-12-13 19:04:02,587 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 53 predicate places. [2022-12-13 19:04:02,587 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 151 transitions, 2198 flow [2022-12-13 19:04:02,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 528.75) internal successors, (2115), 4 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:02,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:04:02,588 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:02,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 19:04:02,588 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:04:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash 658153350, now seen corresponding path program 1 times [2022-12-13 19:04:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:02,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577185574] [2022-12-13 19:04:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:04:02,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577185574] [2022-12-13 19:04:02,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577185574] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180051550] [2022-12-13 19:04:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:02,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:02,790 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:02,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:04:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:02,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 19:04:02,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:03,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:04,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:04:04,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 283 treesize of output 197 [2022-12-13 19:04:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:04:04,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180051550] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:04,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:04,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 13 [2022-12-13 19:04:04,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332652307] [2022-12-13 19:04:04,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:04,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:04:04,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:04:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:04:05,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 500 out of 1397 [2022-12-13 19:04:05,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 151 transitions, 2198 flow. Second operand has 14 states, 14 states have (on average 501.42857142857144) internal successors, (7020), 14 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:05,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:04:05,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 500 of 1397 [2022-12-13 19:04:05,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:04:14,776 INFO L130 PetriNetUnfolder]: 11303/18635 cut-off events. [2022-12-13 19:04:14,776 INFO L131 PetriNetUnfolder]: For 160129/160129 co-relation queries the response was YES. [2022-12-13 19:04:14,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125390 conditions, 18635 events. 11303/18635 cut-off events. For 160129/160129 co-relation queries the response was YES. Maximal size of possible extension queue 1564. Compared 148044 event pairs, 1625 based on Foata normal form. 572/18053 useless extension candidates. Maximal degree in co-relation 125343. Up to 5831 conditions per place. [2022-12-13 19:04:14,905 INFO L137 encePairwiseOnDemand]: 1375/1397 looper letters, 711 selfloop transitions, 315 changer transitions 12/1038 dead transitions. [2022-12-13 19:04:14,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1038 transitions, 15003 flow [2022-12-13 19:04:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 19:04:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-13 19:04:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 19001 transitions. [2022-12-13 19:04:14,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3676023912244385 [2022-12-13 19:04:14,919 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 19001 transitions. [2022-12-13 19:04:14,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 19001 transitions. [2022-12-13 19:04:14,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:04:14,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 19001 transitions. [2022-12-13 19:04:14,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 513.5405405405405) internal successors, (19001), 37 states have internal predecessors, (19001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:14,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 1397.0) internal successors, (53086), 38 states have internal predecessors, (53086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:14,971 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 1397.0) internal successors, (53086), 38 states have internal predecessors, (53086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:14,971 INFO L175 Difference]: Start difference. First operand has 125 places, 151 transitions, 2198 flow. Second operand 37 states and 19001 transitions. [2022-12-13 19:04:14,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1038 transitions, 15003 flow [2022-12-13 19:04:15,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 1038 transitions, 15003 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:04:15,593 INFO L231 Difference]: Finished difference. Result has 170 places, 431 transitions, 7696 flow [2022-12-13 19:04:15,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7696, PETRI_PLACES=170, PETRI_TRANSITIONS=431} [2022-12-13 19:04:15,594 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 98 predicate places. [2022-12-13 19:04:15,594 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 431 transitions, 7696 flow [2022-12-13 19:04:15,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 501.42857142857144) internal successors, (7020), 14 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:15,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:04:15,595 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:15,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 19:04:15,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 19:04:15,796 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:04:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash 658153293, now seen corresponding path program 2 times [2022-12-13 19:04:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:15,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139719928] [2022-12-13 19:04:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:16,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:16,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139719928] [2022-12-13 19:04:16,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139719928] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:16,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506178553] [2022-12-13 19:04:16,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:04:16,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:16,098 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:16,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 19:04:16,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:04:16,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:04:16,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 19:04:16,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:16,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:04:16,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:04:16,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:04:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:16,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:16,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:04:16,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-12-13 19:04:16,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:04:16,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2022-12-13 19:04:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:17,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506178553] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:17,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:17,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 19:04:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973066331] [2022-12-13 19:04:17,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:17,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:04:17,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:04:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=225, Unknown=8, NotChecked=0, Total=272 [2022-12-13 19:04:17,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 509 out of 1397 [2022-12-13 19:04:17,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 431 transitions, 7696 flow. Second operand has 17 states, 17 states have (on average 510.4117647058824) internal successors, (8677), 17 states have internal predecessors, (8677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:17,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:04:17,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 509 of 1397 [2022-12-13 19:04:17,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:04:24,858 INFO L130 PetriNetUnfolder]: 11251/18503 cut-off events. [2022-12-13 19:04:24,858 INFO L131 PetriNetUnfolder]: For 218731/218731 co-relation queries the response was YES. [2022-12-13 19:04:24,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135581 conditions, 18503 events. 11251/18503 cut-off events. For 218731/218731 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 144493 event pairs, 3197 based on Foata normal form. 5/17362 useless extension candidates. Maximal degree in co-relation 135523. Up to 8562 conditions per place. [2022-12-13 19:04:24,988 INFO L137 encePairwiseOnDemand]: 1380/1397 looper letters, 348 selfloop transitions, 183 changer transitions 1/532 dead transitions. [2022-12-13 19:04:24,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 532 transitions, 9899 flow [2022-12-13 19:04:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:04:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 19:04:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 6734 transitions. [2022-12-13 19:04:24,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3707945597709377 [2022-12-13 19:04:24,994 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 6734 transitions. [2022-12-13 19:04:24,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 6734 transitions. [2022-12-13 19:04:24,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:04:24,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 6734 transitions. [2022-12-13 19:04:24,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 518.0) internal successors, (6734), 13 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:25,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1397.0) internal successors, (19558), 14 states have internal predecessors, (19558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:25,008 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1397.0) internal successors, (19558), 14 states have internal predecessors, (19558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:25,008 INFO L175 Difference]: Start difference. First operand has 170 places, 431 transitions, 7696 flow. Second operand 13 states and 6734 transitions. [2022-12-13 19:04:25,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 532 transitions, 9899 flow [2022-12-13 19:04:25,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 532 transitions, 9437 flow, removed 116 selfloop flow, removed 7 redundant places. [2022-12-13 19:04:25,976 INFO L231 Difference]: Finished difference. Result has 177 places, 429 transitions, 7652 flow [2022-12-13 19:04:25,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=7199, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7652, PETRI_PLACES=177, PETRI_TRANSITIONS=429} [2022-12-13 19:04:25,977 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 105 predicate places. [2022-12-13 19:04:25,977 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 429 transitions, 7652 flow [2022-12-13 19:04:25,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 510.4117647058824) internal successors, (8677), 17 states have internal predecessors, (8677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:25,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:04:25,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:25,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 19:04:26,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 19:04:26,179 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:04:26,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:26,180 INFO L85 PathProgramCache]: Analyzing trace with hash 794895022, now seen corresponding path program 1 times [2022-12-13 19:04:26,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:26,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628532866] [2022-12-13 19:04:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:26,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:26,305 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 19:04:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628532866] [2022-12-13 19:04:26,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628532866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857316955] [2022-12-13 19:04:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:26,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:26,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:26,307 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:26,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 19:04:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:26,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:04:26,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:26,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 105 [2022-12-13 19:04:26,714 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 19:04:26,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:27,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 665 treesize of output 481 [2022-12-13 19:04:27,757 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 19:04:27,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857316955] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:27,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:27,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-12-13 19:04:27,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981309381] [2022-12-13 19:04:27,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:27,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:04:27,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:04:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:04:27,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 535 out of 1397 [2022-12-13 19:04:27,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 429 transitions, 7652 flow. Second operand has 13 states, 13 states have (on average 536.7692307692307) internal successors, (6978), 13 states have internal predecessors, (6978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:27,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:04:27,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 535 of 1397 [2022-12-13 19:04:27,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:04:34,285 INFO L130 PetriNetUnfolder]: 10912/17828 cut-off events. [2022-12-13 19:04:34,285 INFO L131 PetriNetUnfolder]: For 240064/240064 co-relation queries the response was YES. [2022-12-13 19:04:34,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130449 conditions, 17828 events. 10912/17828 cut-off events. For 240064/240064 co-relation queries the response was YES. Maximal size of possible extension queue 1470. Compared 138002 event pairs, 4304 based on Foata normal form. 120/16802 useless extension candidates. Maximal degree in co-relation 130391. Up to 13998 conditions per place. [2022-12-13 19:04:34,498 INFO L137 encePairwiseOnDemand]: 1390/1397 looper letters, 550 selfloop transitions, 10 changer transitions 41/601 dead transitions. [2022-12-13 19:04:34,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 601 transitions, 12005 flow [2022-12-13 19:04:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:04:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 19:04:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4367 transitions. [2022-12-13 19:04:34,503 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.390748031496063 [2022-12-13 19:04:34,503 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4367 transitions. [2022-12-13 19:04:34,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4367 transitions. [2022-12-13 19:04:34,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:04:34,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4367 transitions. [2022-12-13 19:04:34,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 545.875) internal successors, (4367), 8 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:34,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1397.0) internal successors, (12573), 9 states have internal predecessors, (12573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:34,517 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1397.0) internal successors, (12573), 9 states have internal predecessors, (12573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:34,517 INFO L175 Difference]: Start difference. First operand has 177 places, 429 transitions, 7652 flow. Second operand 8 states and 4367 transitions. [2022-12-13 19:04:34,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 601 transitions, 12005 flow [2022-12-13 19:04:35,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 601 transitions, 11947 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-12-13 19:04:35,663 INFO L231 Difference]: Finished difference. Result has 174 places, 401 transitions, 7264 flow [2022-12-13 19:04:35,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=7357, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7264, PETRI_PLACES=174, PETRI_TRANSITIONS=401} [2022-12-13 19:04:35,664 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 102 predicate places. [2022-12-13 19:04:35,664 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 401 transitions, 7264 flow [2022-12-13 19:04:35,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 536.7692307692307) internal successors, (6978), 13 states have internal predecessors, (6978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:35,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:04:35,665 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:35,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 19:04:35,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:35,866 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:04:35,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:35,867 INFO L85 PathProgramCache]: Analyzing trace with hash 658153225, now seen corresponding path program 1 times [2022-12-13 19:04:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:35,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362693080] [2022-12-13 19:04:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:35,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:36,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:36,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362693080] [2022-12-13 19:04:36,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362693080] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:36,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861807364] [2022-12-13 19:04:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:36,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:36,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:36,381 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:36,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 19:04:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:36,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 19:04:36,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:36,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:04:36,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:04:36,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:04:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:36,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:37,224 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_675 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_675) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse0 2147483648) 0) (< 2147483647 .cse0) (< 0 (+ (select .cse1 .cse2) 9223372039002259456)))))) (forall ((v_ArrVal_675 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_675) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) 9223372039002259456))))) is different from false [2022-12-13 19:04:37,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:04:37,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 65 [2022-12-13 19:04:37,247 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:04:37,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 113 [2022-12-13 19:04:37,253 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:04:37,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 79 [2022-12-13 19:04:37,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 19:04:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 19:04:37,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861807364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:37,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:37,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 19:04:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722829617] [2022-12-13 19:04:37,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:04:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:37,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:04:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=205, Unknown=1, NotChecked=28, Total=272 [2022-12-13 19:04:37,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 499 out of 1397 [2022-12-13 19:04:37,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 401 transitions, 7264 flow. Second operand has 17 states, 17 states have (on average 500.4117647058824) internal successors, (8507), 17 states have internal predecessors, (8507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:37,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:04:37,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 499 of 1397 [2022-12-13 19:04:37,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:04:45,203 INFO L130 PetriNetUnfolder]: 10689/17285 cut-off events. [2022-12-13 19:04:45,203 INFO L131 PetriNetUnfolder]: For 213704/213704 co-relation queries the response was YES. [2022-12-13 19:04:45,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126841 conditions, 17285 events. 10689/17285 cut-off events. For 213704/213704 co-relation queries the response was YES. Maximal size of possible extension queue 1390. Compared 130734 event pairs, 2783 based on Foata normal form. 9/16165 useless extension candidates. Maximal degree in co-relation 126782. Up to 8562 conditions per place. [2022-12-13 19:04:45,323 INFO L137 encePairwiseOnDemand]: 1380/1397 looper letters, 287 selfloop transitions, 177 changer transitions 0/464 dead transitions. [2022-12-13 19:04:45,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 464 transitions, 8866 flow [2022-12-13 19:04:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 19:04:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 19:04:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 9601 transitions. [2022-12-13 19:04:45,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.361714953094978 [2022-12-13 19:04:45,330 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 9601 transitions. [2022-12-13 19:04:45,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 9601 transitions. [2022-12-13 19:04:45,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:04:45,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 9601 transitions. [2022-12-13 19:04:45,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 505.3157894736842) internal successors, (9601), 19 states have internal predecessors, (9601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:45,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 1397.0) internal successors, (27940), 20 states have internal predecessors, (27940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:45,350 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 1397.0) internal successors, (27940), 20 states have internal predecessors, (27940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:45,350 INFO L175 Difference]: Start difference. First operand has 174 places, 401 transitions, 7264 flow. Second operand 19 states and 9601 transitions. [2022-12-13 19:04:45,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 464 transitions, 8866 flow [2022-12-13 19:04:46,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 464 transitions, 8266 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-12-13 19:04:46,347 INFO L231 Difference]: Finished difference. Result has 180 places, 393 transitions, 6931 flow [2022-12-13 19:04:46,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6509, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6931, PETRI_PLACES=180, PETRI_TRANSITIONS=393} [2022-12-13 19:04:46,348 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 108 predicate places. [2022-12-13 19:04:46,348 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 393 transitions, 6931 flow [2022-12-13 19:04:46,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 500.4117647058824) internal successors, (8507), 17 states have internal predecessors, (8507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:46,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:04:46,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:46,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 19:04:46,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:46,550 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:04:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash 801923700, now seen corresponding path program 1 times [2022-12-13 19:04:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:46,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119949188] [2022-12-13 19:04:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:46,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:46,712 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 19:04:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:46,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119949188] [2022-12-13 19:04:46,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119949188] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:46,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332710691] [2022-12-13 19:04:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:46,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:46,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:46,714 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:46,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 19:04:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:46,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:04:46,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:46,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:04:46,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-12-13 19:04:47,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 489 treesize of output 441 [2022-12-13 19:04:47,253 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 19:04:47,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:47,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 179 [2022-12-13 19:04:47,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-12-13 19:04:47,605 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 19:04:47,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332710691] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:47,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:47,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-13 19:04:47,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757384315] [2022-12-13 19:04:47,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:47,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:04:47,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:04:47,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2022-12-13 19:04:49,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 438 out of 1397 [2022-12-13 19:04:49,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 393 transitions, 6931 flow. Second operand has 15 states, 15 states have (on average 439.46666666666664) internal successors, (6592), 15 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:49,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:04:49,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 438 of 1397 [2022-12-13 19:04:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:04:53,575 INFO L130 PetriNetUnfolder]: 7578/12544 cut-off events. [2022-12-13 19:04:53,575 INFO L131 PetriNetUnfolder]: For 207711/207711 co-relation queries the response was YES. [2022-12-13 19:04:53,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92191 conditions, 12544 events. 7578/12544 cut-off events. For 207711/207711 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 94458 event pairs, 2008 based on Foata normal form. 1993/13550 useless extension candidates. Maximal degree in co-relation 92134. Up to 5281 conditions per place. [2022-12-13 19:04:53,651 INFO L137 encePairwiseOnDemand]: 1382/1397 looper letters, 160 selfloop transitions, 177 changer transitions 11/348 dead transitions. [2022-12-13 19:04:53,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 348 transitions, 6559 flow [2022-12-13 19:04:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:04:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:04:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2690 transitions. [2022-12-13 19:04:53,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.32092579336673827 [2022-12-13 19:04:53,655 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2690 transitions. [2022-12-13 19:04:53,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2690 transitions. [2022-12-13 19:04:53,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:04:53,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2690 transitions. [2022-12-13 19:04:53,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 448.3333333333333) internal successors, (2690), 6 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:53,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1397.0) internal successors, (9779), 7 states have internal predecessors, (9779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:53,661 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1397.0) internal successors, (9779), 7 states have internal predecessors, (9779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:53,661 INFO L175 Difference]: Start difference. First operand has 180 places, 393 transitions, 6931 flow. Second operand 6 states and 2690 transitions. [2022-12-13 19:04:53,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 348 transitions, 6559 flow [2022-12-13 19:04:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 348 transitions, 6062 flow, removed 29 selfloop flow, removed 12 redundant places. [2022-12-13 19:04:54,147 INFO L231 Difference]: Finished difference. Result has 160 places, 289 transitions, 5095 flow [2022-12-13 19:04:54,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4817, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5095, PETRI_PLACES=160, PETRI_TRANSITIONS=289} [2022-12-13 19:04:54,147 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 88 predicate places. [2022-12-13 19:04:54,147 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 289 transitions, 5095 flow [2022-12-13 19:04:54,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 439.46666666666664) internal successors, (6592), 15 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:54,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:04:54,148 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:54,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 19:04:54,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 19:04:54,349 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:04:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1216097678, now seen corresponding path program 1 times [2022-12-13 19:04:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:54,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587809094] [2022-12-13 19:04:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:04:54,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:54,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587809094] [2022-12-13 19:04:54,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587809094] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:54,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645251188] [2022-12-13 19:04:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:54,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:54,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:54,478 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:54,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 19:04:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:54,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 19:04:54,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:54,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 417 [2022-12-13 19:04:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:04:54,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:55,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 161 [2022-12-13 19:04:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:04:55,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645251188] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:55,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:55,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-12-13 19:04:55,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017472332] [2022-12-13 19:04:55,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:55,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:04:55,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:04:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:04:56,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 507 out of 1397 [2022-12-13 19:04:56,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 289 transitions, 5095 flow. Second operand has 10 states, 10 states have (on average 508.6) internal successors, (5086), 10 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:56,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:04:56,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 507 of 1397 [2022-12-13 19:04:56,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:00,849 INFO L130 PetriNetUnfolder]: 7469/12412 cut-off events. [2022-12-13 19:05:00,849 INFO L131 PetriNetUnfolder]: For 105171/105171 co-relation queries the response was YES. [2022-12-13 19:05:00,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89080 conditions, 12412 events. 7469/12412 cut-off events. For 105171/105171 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 93675 event pairs, 1434 based on Foata normal form. 95/11520 useless extension candidates. Maximal degree in co-relation 89045. Up to 6576 conditions per place. [2022-12-13 19:05:00,980 INFO L137 encePairwiseOnDemand]: 1386/1397 looper letters, 347 selfloop transitions, 105 changer transitions 0/452 dead transitions. [2022-12-13 19:05:00,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 452 transitions, 7700 flow [2022-12-13 19:05:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:05:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:05:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 6221 transitions. [2022-12-13 19:05:00,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37109281794321164 [2022-12-13 19:05:00,986 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 6221 transitions. [2022-12-13 19:05:00,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 6221 transitions. [2022-12-13 19:05:00,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:00,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 6221 transitions. [2022-12-13 19:05:00,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 518.4166666666666) internal successors, (6221), 12 states have internal predecessors, (6221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:00,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1397.0) internal successors, (18161), 13 states have internal predecessors, (18161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:00,998 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1397.0) internal successors, (18161), 13 states have internal predecessors, (18161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:00,998 INFO L175 Difference]: Start difference. First operand has 160 places, 289 transitions, 5095 flow. Second operand 12 states and 6221 transitions. [2022-12-13 19:05:00,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 452 transitions, 7700 flow [2022-12-13 19:05:01,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 452 transitions, 7103 flow, removed 46 selfloop flow, removed 9 redundant places. [2022-12-13 19:05:01,400 INFO L231 Difference]: Finished difference. Result has 152 places, 283 transitions, 4676 flow [2022-12-13 19:05:01,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4676, PETRI_PLACES=152, PETRI_TRANSITIONS=283} [2022-12-13 19:05:01,401 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 80 predicate places. [2022-12-13 19:05:01,401 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 283 transitions, 4676 flow [2022-12-13 19:05:01,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 508.6) internal successors, (5086), 10 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:01,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:01,401 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:01,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 19:05:01,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 19:05:01,603 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1072327326, now seen corresponding path program 1 times [2022-12-13 19:05:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:01,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476763004] [2022-12-13 19:05:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:01,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:01,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476763004] [2022-12-13 19:05:01,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476763004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:01,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578223946] [2022-12-13 19:05:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:01,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:01,930 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:01,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 19:05:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:02,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 19:05:02,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:02,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:05:02,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:02,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:05:02,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:02,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:05:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:02,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:02,696 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (* c_~i~0 4))) (let ((.cse0 (+ c_~A~0.offset .cse6 4))) (and (or (forall ((v_ArrVal_778 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_778) c_~A~0.base) .cse0) 4294967296)) (let ((.cse1 (not (<= 0 (+ c_~bag1~0 c_~sum1~0 2147483648)))) (.cse2 (<= 0 c_~bag1~0)) (.cse3 (not (<= (+ c_~bag1~0 c_~sum1~0) 2147483647)))) (and (or .cse1 (not .cse2) (< 4294967295 c_~bag1~0) .cse3) (or .cse1 (< (+ 9223372039002259455 c_~bag1~0) 0) .cse2 .cse3)))) (forall ((v_ArrVal_778 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_778) c_~A~0.base))) (let ((.cse5 (select .cse4 (+ c_~A~0.offset .cse6)))) (or (< (select .cse4 .cse0) 4294967296) (not (<= (+ .cse5 c_~bag1~0) 2147483647)) (not (<= 0 (+ .cse5 c_~bag1~0 2147483648))) (not (<= 0 (+ 9223372039002259455 .cse5))) (not (<= .cse5 4294967295))))))))) is different from false [2022-12-13 19:05:02,773 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_777 (Array Int Int)) (v_ArrVal_778 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_777) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_778) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse0 2147483648) 0) (< 2147483647 .cse0) (< (select .cse1 .cse2) 4294967296))))) (forall ((v_ArrVal_777 (Array Int Int)) (v_ArrVal_778 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_777) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_778) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) 4294967296)))) is different from false [2022-12-13 19:05:02,783 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:02,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 73 [2022-12-13 19:05:02,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:02,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 445 treesize of output 423 [2022-12-13 19:05:02,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:02,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 399 treesize of output 367 [2022-12-13 19:05:02,814 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:02,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 351 [2022-12-13 19:05:02,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 343 [2022-12-13 19:05:02,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 343 treesize of output 339 [2022-12-13 19:05:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 19:05:03,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578223946] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:03,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:03,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 19:05:03,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690307301] [2022-12-13 19:05:03,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:03,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:05:03,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:05:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=266, Unknown=2, NotChecked=66, Total=380 [2022-12-13 19:05:03,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:05:03,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 283 transitions, 4676 flow. Second operand has 20 states, 20 states have (on average 497.35) internal successors, (9947), 20 states have internal predecessors, (9947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:03,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:03,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:05:03,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:07,678 INFO L130 PetriNetUnfolder]: 7081/12403 cut-off events. [2022-12-13 19:05:07,678 INFO L131 PetriNetUnfolder]: For 98798/98798 co-relation queries the response was YES. [2022-12-13 19:05:07,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83447 conditions, 12403 events. 7081/12403 cut-off events. For 98798/98798 co-relation queries the response was YES. Maximal size of possible extension queue 1114. Compared 102089 event pairs, 1912 based on Foata normal form. 1007/12736 useless extension candidates. Maximal degree in co-relation 83418. Up to 3431 conditions per place. [2022-12-13 19:05:07,754 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 289 selfloop transitions, 117 changer transitions 0/406 dead transitions. [2022-12-13 19:05:07,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 406 transitions, 6589 flow [2022-12-13 19:05:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:05:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 19:05:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 7095 transitions. [2022-12-13 19:05:07,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3627671541057368 [2022-12-13 19:05:07,759 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 7095 transitions. [2022-12-13 19:05:07,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 7095 transitions. [2022-12-13 19:05:07,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:07,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 7095 transitions. [2022-12-13 19:05:07,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 506.7857142857143) internal successors, (7095), 14 states have internal predecessors, (7095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:07,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1397.0) internal successors, (20955), 15 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:07,773 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1397.0) internal successors, (20955), 15 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:07,773 INFO L175 Difference]: Start difference. First operand has 152 places, 283 transitions, 4676 flow. Second operand 14 states and 7095 transitions. [2022-12-13 19:05:07,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 406 transitions, 6589 flow [2022-12-13 19:05:08,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 406 transitions, 6520 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 19:05:08,060 INFO L231 Difference]: Finished difference. Result has 165 places, 241 transitions, 4569 flow [2022-12-13 19:05:08,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4569, PETRI_PLACES=165, PETRI_TRANSITIONS=241} [2022-12-13 19:05:08,060 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 93 predicate places. [2022-12-13 19:05:08,060 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 241 transitions, 4569 flow [2022-12-13 19:05:08,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 497.35) internal successors, (9947), 20 states have internal predecessors, (9947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:08,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:08,061 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:08,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 19:05:08,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 19:05:08,262 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:08,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1072087454, now seen corresponding path program 1 times [2022-12-13 19:05:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:08,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840586345] [2022-12-13 19:05:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:08,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:08,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:08,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840586345] [2022-12-13 19:05:08,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840586345] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:08,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35239170] [2022-12-13 19:05:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:08,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:08,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:08,740 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:08,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 19:05:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:08,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 19:05:08,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:08,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:05:08,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:08,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:05:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:09,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:05:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:09,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:09,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:09,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-12-13 19:05:09,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:09,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 149 [2022-12-13 19:05:09,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 126 [2022-12-13 19:05:09,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 110 [2022-12-13 19:05:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:09,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35239170] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:09,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:09,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 19:05:09,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651862231] [2022-12-13 19:05:09,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:09,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:05:09,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:05:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=322, Unknown=9, NotChecked=0, Total=380 [2022-12-13 19:05:10,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:05:10,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 241 transitions, 4569 flow. Second operand has 20 states, 20 states have (on average 497.35) internal successors, (9947), 20 states have internal predecessors, (9947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:10,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:10,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:05:10,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:14,820 INFO L130 PetriNetUnfolder]: 6310/11317 cut-off events. [2022-12-13 19:05:14,820 INFO L131 PetriNetUnfolder]: For 104272/104272 co-relation queries the response was YES. [2022-12-13 19:05:14,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79642 conditions, 11317 events. 6310/11317 cut-off events. For 104272/104272 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 93335 event pairs, 1431 based on Foata normal form. 547/11318 useless extension candidates. Maximal degree in co-relation 79610. Up to 2916 conditions per place. [2022-12-13 19:05:14,885 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 303 selfloop transitions, 117 changer transitions 3/423 dead transitions. [2022-12-13 19:05:14,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 423 transitions, 7036 flow [2022-12-13 19:05:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:05:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 19:05:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 8605 transitions. [2022-12-13 19:05:14,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.362331045517706 [2022-12-13 19:05:14,892 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 8605 transitions. [2022-12-13 19:05:14,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 8605 transitions. [2022-12-13 19:05:14,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:14,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 8605 transitions. [2022-12-13 19:05:14,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 506.1764705882353) internal successors, (8605), 17 states have internal predecessors, (8605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:14,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1397.0) internal successors, (25146), 18 states have internal predecessors, (25146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:14,909 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1397.0) internal successors, (25146), 18 states have internal predecessors, (25146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:14,909 INFO L175 Difference]: Start difference. First operand has 165 places, 241 transitions, 4569 flow. Second operand 17 states and 8605 transitions. [2022-12-13 19:05:14,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 423 transitions, 7036 flow [2022-12-13 19:05:15,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 423 transitions, 6892 flow, removed 28 selfloop flow, removed 7 redundant places. [2022-12-13 19:05:15,253 INFO L231 Difference]: Finished difference. Result has 173 places, 222 transitions, 4363 flow [2022-12-13 19:05:15,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4068, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4363, PETRI_PLACES=173, PETRI_TRANSITIONS=222} [2022-12-13 19:05:15,254 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 101 predicate places. [2022-12-13 19:05:15,254 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 222 transitions, 4363 flow [2022-12-13 19:05:15,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 497.35) internal successors, (9947), 20 states have internal predecessors, (9947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:15,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:15,255 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:15,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 19:05:15,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 19:05:15,456 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1072327273, now seen corresponding path program 1 times [2022-12-13 19:05:15,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:15,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515398902] [2022-12-13 19:05:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:15,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:05:15,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:15,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515398902] [2022-12-13 19:05:15,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515398902] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:15,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381830990] [2022-12-13 19:05:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:15,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:15,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:15,716 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:15,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 19:05:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:15,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 19:05:15,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:15,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:15,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2022-12-13 19:05:16,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 417 [2022-12-13 19:05:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:05:16,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:16,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 179 [2022-12-13 19:05:16,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-13 19:05:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:05:16,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381830990] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:16,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:16,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-13 19:05:16,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219965275] [2022-12-13 19:05:16,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:16,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:05:16,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:05:16,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:05:17,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 1397 [2022-12-13 19:05:17,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 222 transitions, 4363 flow. Second operand has 15 states, 15 states have (on average 503.4) internal successors, (7551), 15 states have internal predecessors, (7551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:17,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:17,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 1397 [2022-12-13 19:05:17,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:21,827 INFO L130 PetriNetUnfolder]: 5948/10701 cut-off events. [2022-12-13 19:05:21,827 INFO L131 PetriNetUnfolder]: For 98927/98927 co-relation queries the response was YES. [2022-12-13 19:05:21,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76096 conditions, 10701 events. 5948/10701 cut-off events. For 98927/98927 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 87297 event pairs, 1526 based on Foata normal form. 190/10369 useless extension candidates. Maximal degree in co-relation 76066. Up to 4525 conditions per place. [2022-12-13 19:05:21,888 INFO L137 encePairwiseOnDemand]: 1388/1397 looper letters, 281 selfloop transitions, 77 changer transitions 0/358 dead transitions. [2022-12-13 19:05:21,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 358 transitions, 6425 flow [2022-12-13 19:05:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:05:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:05:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5637 transitions. [2022-12-13 19:05:21,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3668250146417648 [2022-12-13 19:05:21,893 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5637 transitions. [2022-12-13 19:05:21,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5637 transitions. [2022-12-13 19:05:21,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:21,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5637 transitions. [2022-12-13 19:05:21,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 512.4545454545455) internal successors, (5637), 11 states have internal predecessors, (5637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:21,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1397.0) internal successors, (16764), 12 states have internal predecessors, (16764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:21,903 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1397.0) internal successors, (16764), 12 states have internal predecessors, (16764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:21,903 INFO L175 Difference]: Start difference. First operand has 173 places, 222 transitions, 4363 flow. Second operand 11 states and 5637 transitions. [2022-12-13 19:05:21,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 358 transitions, 6425 flow [2022-12-13 19:05:22,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 358 transitions, 6283 flow, removed 12 selfloop flow, removed 10 redundant places. [2022-12-13 19:05:22,131 INFO L231 Difference]: Finished difference. Result has 173 places, 214 transitions, 4185 flow [2022-12-13 19:05:22,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4031, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4185, PETRI_PLACES=173, PETRI_TRANSITIONS=214} [2022-12-13 19:05:22,132 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 101 predicate places. [2022-12-13 19:05:22,132 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 214 transitions, 4185 flow [2022-12-13 19:05:22,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 503.4) internal successors, (7551), 15 states have internal predecessors, (7551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:22,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:22,132 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:22,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-13 19:05:22,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 19:05:22,334 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1079356002, now seen corresponding path program 2 times [2022-12-13 19:05:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:22,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768694676] [2022-12-13 19:05:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:22,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:22,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768694676] [2022-12-13 19:05:22,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768694676] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:22,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919282731] [2022-12-13 19:05:22,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:05:22,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:22,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:22,679 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:22,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 19:05:22,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:05:22,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:05:22,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 19:05:22,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:22,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:05:22,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:22,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:05:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:22,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:05:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:23,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:23,827 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int)) (v_ArrVal_888 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_888) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_889) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse0) (< 0 (+ (select .cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) (< (+ .cse0 2147483648) 0))))) is different from false [2022-12-13 19:05:23,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:23,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 58 [2022-12-13 19:05:23,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:23,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 191 treesize of output 189 [2022-12-13 19:05:23,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:23,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 148 [2022-12-13 19:05:23,861 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:23,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 69 [2022-12-13 19:05:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 19:05:23,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919282731] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:23,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:23,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 19:05:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038781818] [2022-12-13 19:05:23,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:05:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:05:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=4, NotChecked=34, Total=380 [2022-12-13 19:05:24,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:05:24,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 214 transitions, 4185 flow. Second operand has 20 states, 20 states have (on average 497.35) internal successors, (9947), 20 states have internal predecessors, (9947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:24,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:24,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:05:24,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:28,105 INFO L130 PetriNetUnfolder]: 5172/9409 cut-off events. [2022-12-13 19:05:28,105 INFO L131 PetriNetUnfolder]: For 117828/117828 co-relation queries the response was YES. [2022-12-13 19:05:28,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67106 conditions, 9409 events. 5172/9409 cut-off events. For 117828/117828 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 78047 event pairs, 476 based on Foata normal form. 668/9441 useless extension candidates. Maximal degree in co-relation 67077. Up to 2164 conditions per place. [2022-12-13 19:05:28,160 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 635 selfloop transitions, 40 changer transitions 12/687 dead transitions. [2022-12-13 19:05:28,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 687 transitions, 14759 flow [2022-12-13 19:05:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 19:05:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 19:05:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 9099 transitions. [2022-12-13 19:05:28,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3618468146027201 [2022-12-13 19:05:28,167 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 9099 transitions. [2022-12-13 19:05:28,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 9099 transitions. [2022-12-13 19:05:28,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:28,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 9099 transitions. [2022-12-13 19:05:28,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 505.5) internal successors, (9099), 18 states have internal predecessors, (9099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:28,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1397.0) internal successors, (26543), 19 states have internal predecessors, (26543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:28,185 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1397.0) internal successors, (26543), 19 states have internal predecessors, (26543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:28,186 INFO L175 Difference]: Start difference. First operand has 173 places, 214 transitions, 4185 flow. Second operand 18 states and 9099 transitions. [2022-12-13 19:05:28,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 687 transitions, 14759 flow [2022-12-13 19:05:28,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 687 transitions, 14288 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 19:05:28,318 INFO L231 Difference]: Finished difference. Result has 184 places, 228 transitions, 4235 flow [2022-12-13 19:05:28,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4235, PETRI_PLACES=184, PETRI_TRANSITIONS=228} [2022-12-13 19:05:28,319 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 112 predicate places. [2022-12-13 19:05:28,319 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 228 transitions, 4235 flow [2022-12-13 19:05:28,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 497.35) internal successors, (9947), 20 states have internal predecessors, (9947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:28,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:28,321 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:28,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 19:05:28,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-13 19:05:28,522 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1079355970, now seen corresponding path program 1 times [2022-12-13 19:05:28,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:28,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024496834] [2022-12-13 19:05:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:28,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:28,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:28,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024496834] [2022-12-13 19:05:28,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024496834] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:28,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581402477] [2022-12-13 19:05:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:28,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:28,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:28,823 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:28,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 19:05:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:28,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 19:05:28,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:29,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:05:29,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:29,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:05:29,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:29,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:05:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:29,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:29,886 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_926 (Array Int Int)) (v_ArrVal_927 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_926) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_927) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select .cse0 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296) (< (+ 2147483648 .cse1) 0) (< 2147483647 .cse1))))) is different from false [2022-12-13 19:05:29,894 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:29,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 56 [2022-12-13 19:05:29,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:29,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 181 treesize of output 179 [2022-12-13 19:05:29,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:29,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 140 [2022-12-13 19:05:29,918 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:29,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 65 [2022-12-13 19:05:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 19:05:30,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581402477] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:30,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:30,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 19:05:30,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152392585] [2022-12-13 19:05:30,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:30,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:05:30,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:05:30,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=293, Unknown=6, NotChecked=34, Total=380 [2022-12-13 19:05:30,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:05:30,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 228 transitions, 4235 flow. Second operand has 20 states, 20 states have (on average 497.35) internal successors, (9947), 20 states have internal predecessors, (9947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:30,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:30,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:05:30,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:33,977 INFO L130 PetriNetUnfolder]: 4628/8349 cut-off events. [2022-12-13 19:05:33,978 INFO L131 PetriNetUnfolder]: For 91407/91407 co-relation queries the response was YES. [2022-12-13 19:05:34,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62258 conditions, 8349 events. 4628/8349 cut-off events. For 91407/91407 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 66783 event pairs, 581 based on Foata normal form. 436/8169 useless extension candidates. Maximal degree in co-relation 62228. Up to 1823 conditions per place. [2022-12-13 19:05:34,025 INFO L137 encePairwiseOnDemand]: 1388/1397 looper letters, 515 selfloop transitions, 33 changer transitions 0/548 dead transitions. [2022-12-13 19:05:34,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 548 transitions, 11440 flow [2022-12-13 19:05:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:05:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 19:05:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 7579 transitions. [2022-12-13 19:05:34,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36167979002624673 [2022-12-13 19:05:34,031 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 7579 transitions. [2022-12-13 19:05:34,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 7579 transitions. [2022-12-13 19:05:34,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:34,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 7579 transitions. [2022-12-13 19:05:34,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 505.26666666666665) internal successors, (7579), 15 states have internal predecessors, (7579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:34,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1397.0) internal successors, (22352), 16 states have internal predecessors, (22352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:34,044 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1397.0) internal successors, (22352), 16 states have internal predecessors, (22352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:34,044 INFO L175 Difference]: Start difference. First operand has 184 places, 228 transitions, 4235 flow. Second operand 15 states and 7579 transitions. [2022-12-13 19:05:34,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 548 transitions, 11440 flow [2022-12-13 19:05:34,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 548 transitions, 11200 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-12-13 19:05:34,180 INFO L231 Difference]: Finished difference. Result has 188 places, 222 transitions, 4094 flow [2022-12-13 19:05:34,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4028, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4094, PETRI_PLACES=188, PETRI_TRANSITIONS=222} [2022-12-13 19:05:34,180 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 116 predicate places. [2022-12-13 19:05:34,180 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 222 transitions, 4094 flow [2022-12-13 19:05:34,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 497.35) internal successors, (9947), 20 states have internal predecessors, (9947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:34,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:34,181 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:34,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 19:05:34,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:34,383 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:34,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash 955673014, now seen corresponding path program 2 times [2022-12-13 19:05:34,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:34,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660961305] [2022-12-13 19:05:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:34,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:34,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:34,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660961305] [2022-12-13 19:05:34,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660961305] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:34,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186851350] [2022-12-13 19:05:34,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:05:34,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:34,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:34,716 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:34,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 19:05:34,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:05:34,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:05:34,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 19:05:34,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:34,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:05:34,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:34,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:05:34,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:34,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:05:35,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:35,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:05:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:35,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:35,156 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_971 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_971) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 4294967296)) is different from false [2022-12-13 19:05:35,764 INFO L321 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2022-12-13 19:05:35,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2022-12-13 19:05:35,770 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:35,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 131 [2022-12-13 19:05:35,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 102 [2022-12-13 19:05:35,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-12-13 19:05:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:35,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186851350] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:35,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:35,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 19:05:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124845315] [2022-12-13 19:05:35,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:35,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 19:05:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:35,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 19:05:35,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=384, Unknown=10, NotChecked=40, Total=506 [2022-12-13 19:05:35,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 505 out of 1397 [2022-12-13 19:05:35,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 222 transitions, 4094 flow. Second operand has 23 states, 23 states have (on average 506.30434782608694) internal successors, (11645), 23 states have internal predecessors, (11645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:35,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:35,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 505 of 1397 [2022-12-13 19:05:35,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:38,969 INFO L130 PetriNetUnfolder]: 4560/8235 cut-off events. [2022-12-13 19:05:38,969 INFO L131 PetriNetUnfolder]: For 59356/59356 co-relation queries the response was YES. [2022-12-13 19:05:38,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61444 conditions, 8235 events. 4560/8235 cut-off events. For 59356/59356 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 64439 event pairs, 1090 based on Foata normal form. 46/7441 useless extension candidates. Maximal degree in co-relation 61417. Up to 2846 conditions per place. [2022-12-13 19:05:39,014 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 210 selfloop transitions, 110 changer transitions 0/320 dead transitions. [2022-12-13 19:05:39,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 320 transitions, 5851 flow [2022-12-13 19:05:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:05:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:05:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4626 transitions. [2022-12-13 19:05:39,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3679312813171081 [2022-12-13 19:05:39,018 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4626 transitions. [2022-12-13 19:05:39,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4626 transitions. [2022-12-13 19:05:39,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:39,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4626 transitions. [2022-12-13 19:05:39,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 514.0) internal successors, (4626), 9 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:39,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:39,026 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1397.0) internal successors, (13970), 10 states have internal predecessors, (13970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:39,026 INFO L175 Difference]: Start difference. First operand has 188 places, 222 transitions, 4094 flow. Second operand 9 states and 4626 transitions. [2022-12-13 19:05:39,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 320 transitions, 5851 flow [2022-12-13 19:05:39,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 320 transitions, 5718 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-12-13 19:05:39,147 INFO L231 Difference]: Finished difference. Result has 183 places, 221 transitions, 4244 flow [2022-12-13 19:05:39,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4024, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4244, PETRI_PLACES=183, PETRI_TRANSITIONS=221} [2022-12-13 19:05:39,148 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 111 predicate places. [2022-12-13 19:05:39,148 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 221 transitions, 4244 flow [2022-12-13 19:05:39,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 506.30434782608694) internal successors, (11645), 23 states have internal predecessors, (11645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:39,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:39,149 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-12-13 19:05:39,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 19:05:39,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 19:05:39,350 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:39,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:39,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1125243962, now seen corresponding path program 2 times [2022-12-13 19:05:39,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:39,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751106635] [2022-12-13 19:05:39,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:39,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:39,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:39,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751106635] [2022-12-13 19:05:39,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751106635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:39,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337657927] [2022-12-13 19:05:39,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:05:39,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:39,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:39,547 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:39,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 19:05:39,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:05:39,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:05:39,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 19:05:39,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:40,126 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-13 19:05:40,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 452 treesize of output 420 [2022-12-13 19:05:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:40,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:40,938 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 19:05:40,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 603 treesize of output 547 [2022-12-13 19:05:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:41,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337657927] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:41,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:41,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 19:05:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933500641] [2022-12-13 19:05:41,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:41,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:05:41,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:05:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:05:41,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 1397 [2022-12-13 19:05:41,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 221 transitions, 4244 flow. Second operand has 20 states, 20 states have (on average 528.5) internal successors, (10570), 20 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:41,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:41,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 1397 [2022-12-13 19:05:41,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:44,326 INFO L130 PetriNetUnfolder]: 3926/7281 cut-off events. [2022-12-13 19:05:44,326 INFO L131 PetriNetUnfolder]: For 64334/64334 co-relation queries the response was YES. [2022-12-13 19:05:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52732 conditions, 7281 events. 3926/7281 cut-off events. For 64334/64334 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 57316 event pairs, 1403 based on Foata normal form. 221/6702 useless extension candidates. Maximal degree in co-relation 52705. Up to 3647 conditions per place. [2022-12-13 19:05:44,364 INFO L137 encePairwiseOnDemand]: 1388/1397 looper letters, 190 selfloop transitions, 47 changer transitions 21/258 dead transitions. [2022-12-13 19:05:44,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 258 transitions, 4205 flow [2022-12-13 19:05:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:05:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 19:05:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 6967 transitions. [2022-12-13 19:05:44,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38362424976598203 [2022-12-13 19:05:44,369 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 6967 transitions. [2022-12-13 19:05:44,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 6967 transitions. [2022-12-13 19:05:44,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:44,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 6967 transitions. [2022-12-13 19:05:44,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 535.9230769230769) internal successors, (6967), 13 states have internal predecessors, (6967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:44,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1397.0) internal successors, (19558), 14 states have internal predecessors, (19558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:44,382 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1397.0) internal successors, (19558), 14 states have internal predecessors, (19558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:44,382 INFO L175 Difference]: Start difference. First operand has 183 places, 221 transitions, 4244 flow. Second operand 13 states and 6967 transitions. [2022-12-13 19:05:44,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 258 transitions, 4205 flow [2022-12-13 19:05:44,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 258 transitions, 4089 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-12-13 19:05:44,459 INFO L231 Difference]: Finished difference. Result has 178 places, 160 transitions, 2774 flow [2022-12-13 19:05:44,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2774, PETRI_PLACES=178, PETRI_TRANSITIONS=160} [2022-12-13 19:05:44,459 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 106 predicate places. [2022-12-13 19:05:44,459 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 160 transitions, 2774 flow [2022-12-13 19:05:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 528.5) internal successors, (10570), 20 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:44,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:44,460 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:44,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-12-13 19:05:44,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 19:05:44,662 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:44,663 INFO L85 PathProgramCache]: Analyzing trace with hash 899708894, now seen corresponding path program 1 times [2022-12-13 19:05:44,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:44,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508867763] [2022-12-13 19:05:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:44,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:44,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:44,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508867763] [2022-12-13 19:05:44,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508867763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:44,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259715800] [2022-12-13 19:05:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:44,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:44,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:44,971 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:44,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 19:05:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:45,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 19:05:45,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:45,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:45,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 437 treesize of output 279 [2022-12-13 19:05:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:45,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:46,795 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 19:05:46,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 857 treesize of output 593 [2022-12-13 19:05:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:47,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259715800] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:47,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:47,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 19:05:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000139430] [2022-12-13 19:05:47,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:47,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:05:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:05:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:05:47,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 1397 [2022-12-13 19:05:47,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 160 transitions, 2774 flow. Second operand has 20 states, 20 states have (on average 528.5) internal successors, (10570), 20 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:47,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:47,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 1397 [2022-12-13 19:05:47,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:05:50,696 INFO L130 PetriNetUnfolder]: 3617/6722 cut-off events. [2022-12-13 19:05:50,697 INFO L131 PetriNetUnfolder]: For 75944/75944 co-relation queries the response was YES. [2022-12-13 19:05:50,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48956 conditions, 6722 events. 3617/6722 cut-off events. For 75944/75944 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 53559 event pairs, 140 based on Foata normal form. 124/6226 useless extension candidates. Maximal degree in co-relation 48931. Up to 1813 conditions per place. [2022-12-13 19:05:50,730 INFO L137 encePairwiseOnDemand]: 1388/1397 looper letters, 271 selfloop transitions, 19 changer transitions 104/394 dead transitions. [2022-12-13 19:05:50,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 394 transitions, 7892 flow [2022-12-13 19:05:50,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:05:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 19:05:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 6964 transitions. [2022-12-13 19:05:50,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.383459060624415 [2022-12-13 19:05:50,735 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 6964 transitions. [2022-12-13 19:05:50,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 6964 transitions. [2022-12-13 19:05:50,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:05:50,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 6964 transitions. [2022-12-13 19:05:50,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 535.6923076923077) internal successors, (6964), 13 states have internal predecessors, (6964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:50,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1397.0) internal successors, (19558), 14 states have internal predecessors, (19558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:50,746 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1397.0) internal successors, (19558), 14 states have internal predecessors, (19558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:50,747 INFO L175 Difference]: Start difference. First operand has 178 places, 160 transitions, 2774 flow. Second operand 13 states and 6964 transitions. [2022-12-13 19:05:50,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 394 transitions, 7892 flow [2022-12-13 19:05:50,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 394 transitions, 7852 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 19:05:50,798 INFO L231 Difference]: Finished difference. Result has 183 places, 114 transitions, 2067 flow [2022-12-13 19:05:50,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2067, PETRI_PLACES=183, PETRI_TRANSITIONS=114} [2022-12-13 19:05:50,798 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 111 predicate places. [2022-12-13 19:05:50,798 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 114 transitions, 2067 flow [2022-12-13 19:05:50,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 528.5) internal successors, (10570), 20 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:50,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:05:50,799 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:50,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 19:05:51,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-12-13 19:05:51,001 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:05:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -664228221, now seen corresponding path program 3 times [2022-12-13 19:05:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:51,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694225863] [2022-12-13 19:05:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694225863] [2022-12-13 19:05:51,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694225863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190485788] [2022-12-13 19:05:51,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:05:51,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:51,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:51,399 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:51,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 19:05:51,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:05:51,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:05:51,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 19:05:51,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:51,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 19:05:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:51,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 19:05:51,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:05:51,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 19:05:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:52,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:54,789 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:54,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 201 [2022-12-13 19:05:54,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:54,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1344 treesize of output 1246 [2022-12-13 19:05:54,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:54,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1210 treesize of output 1178 [2022-12-13 19:05:54,861 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:54,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1178 treesize of output 1114 [2022-12-13 19:05:54,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:54,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1114 treesize of output 1074 [2022-12-13 19:05:54,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:05:54,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1074 treesize of output 994 [2022-12-13 19:05:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:55,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190485788] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:55,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:55,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:05:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204664053] [2022-12-13 19:05:55,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:55,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:05:55,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:05:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=542, Unknown=4, NotChecked=0, Total=650 [2022-12-13 19:05:59,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 1397 [2022-12-13 19:05:59,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 114 transitions, 2067 flow. Second operand has 26 states, 26 states have (on average 493.2692307692308) internal successors, (12825), 26 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:59,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:05:59,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 1397 [2022-12-13 19:05:59,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:10,345 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification that was a NOOP. DAG size: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:06:30,514 WARN L233 SmtUtils]: Spent 19.64s on a formula simplification. DAG size of input: 161 DAG size of output: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:06:35,823 INFO L130 PetriNetUnfolder]: 5095/8718 cut-off events. [2022-12-13 19:06:35,823 INFO L131 PetriNetUnfolder]: For 95448/95448 co-relation queries the response was YES. [2022-12-13 19:06:35,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68008 conditions, 8718 events. 5095/8718 cut-off events. For 95448/95448 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 65209 event pairs, 392 based on Foata normal form. 114/8044 useless extension candidates. Maximal degree in co-relation 67981. Up to 1996 conditions per place. [2022-12-13 19:06:35,875 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 743 selfloop transitions, 75 changer transitions 19/837 dead transitions. [2022-12-13 19:06:35,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 837 transitions, 17667 flow [2022-12-13 19:06:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 19:06:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 19:06:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 11561 transitions. [2022-12-13 19:06:35,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.359808284833961 [2022-12-13 19:06:35,883 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 11561 transitions. [2022-12-13 19:06:35,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 11561 transitions. [2022-12-13 19:06:35,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:06:35,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 11561 transitions. [2022-12-13 19:06:35,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 502.6521739130435) internal successors, (11561), 23 states have internal predecessors, (11561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:06:35,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 1397.0) internal successors, (33528), 24 states have internal predecessors, (33528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:06:35,905 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 1397.0) internal successors, (33528), 24 states have internal predecessors, (33528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:06:35,905 INFO L175 Difference]: Start difference. First operand has 183 places, 114 transitions, 2067 flow. Second operand 23 states and 11561 transitions. [2022-12-13 19:06:35,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 837 transitions, 17667 flow [2022-12-13 19:06:36,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 837 transitions, 17622 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-12-13 19:06:36,008 INFO L231 Difference]: Finished difference. Result has 177 places, 180 transitions, 3388 flow [2022-12-13 19:06:36,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3388, PETRI_PLACES=177, PETRI_TRANSITIONS=180} [2022-12-13 19:06:36,009 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 105 predicate places. [2022-12-13 19:06:36,009 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 180 transitions, 3388 flow [2022-12-13 19:06:36,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 493.2692307692308) internal successors, (12825), 26 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:06:36,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:36,010 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:06:36,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 19:06:36,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-12-13 19:06:36,210 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:06:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash -664228146, now seen corresponding path program 2 times [2022-12-13 19:06:36,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:36,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036589124] [2022-12-13 19:06:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:36,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:06:36,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:36,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036589124] [2022-12-13 19:06:36,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036589124] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:06:36,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258316163] [2022-12-13 19:06:36,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:06:36,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:06:36,758 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:06:36,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 19:06:36,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:06:36,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:06:36,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 19:06:36,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:06:36,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:06:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:06:37,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 19:06:37,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:06:37,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:06:37,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:06:37,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:06:37,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:06:37,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 403 treesize of output 279 [2022-12-13 19:06:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:06:37,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:06:38,980 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1121 (Array Int Int)) (v_ArrVal_1120 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1120) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1121) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse1 (select .cse2 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (< (+ .cse0 2147483648 .cse1) 0) (< 2147483647 .cse0) (< 0 (+ 2147483649 .cse1)))))) is different from false [2022-12-13 19:06:39,089 INFO L321 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2022-12-13 19:06:39,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 83 [2022-12-13 19:06:39,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:06:39,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 213 treesize of output 205 [2022-12-13 19:06:39,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:06:39,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 156 [2022-12-13 19:06:39,118 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:06:39,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 71 [2022-12-13 19:06:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 19:06:39,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258316163] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:06:39,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:06:39,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:06:39,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010703032] [2022-12-13 19:06:39,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:06:39,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:06:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:06:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=516, Unknown=10, NotChecked=46, Total=650 [2022-12-13 19:06:39,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 1397 [2022-12-13 19:06:39,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 180 transitions, 3388 flow. Second operand has 26 states, 26 states have (on average 493.2692307692308) internal successors, (12825), 26 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:06:39,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:39,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 1397 [2022-12-13 19:06:39,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:51,691 WARN L233 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 89 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:06:58,672 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 89 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:07:02,046 INFO L130 PetriNetUnfolder]: 5273/9124 cut-off events. [2022-12-13 19:07:02,046 INFO L131 PetriNetUnfolder]: For 111892/111892 co-relation queries the response was YES. [2022-12-13 19:07:02,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76179 conditions, 9124 events. 5273/9124 cut-off events. For 111892/111892 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 69748 event pairs, 263 based on Foata normal form. 114/8860 useless extension candidates. Maximal degree in co-relation 76147. Up to 1992 conditions per place. [2022-12-13 19:07:02,103 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 892 selfloop transitions, 77 changer transitions 31/1000 dead transitions. [2022-12-13 19:07:02,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1000 transitions, 21778 flow [2022-12-13 19:07:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 19:07:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 19:07:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 13079 transitions. [2022-12-13 19:07:02,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3600847970926711 [2022-12-13 19:07:02,112 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 13079 transitions. [2022-12-13 19:07:02,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 13079 transitions. [2022-12-13 19:07:02,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:02,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 13079 transitions. [2022-12-13 19:07:02,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 503.03846153846155) internal successors, (13079), 26 states have internal predecessors, (13079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:02,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 1397.0) internal successors, (37719), 27 states have internal predecessors, (37719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:02,142 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 1397.0) internal successors, (37719), 27 states have internal predecessors, (37719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:02,142 INFO L175 Difference]: Start difference. First operand has 177 places, 180 transitions, 3388 flow. Second operand 26 states and 13079 transitions. [2022-12-13 19:07:02,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1000 transitions, 21778 flow [2022-12-13 19:07:02,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1000 transitions, 21732 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-12-13 19:07:02,278 INFO L231 Difference]: Finished difference. Result has 199 places, 189 transitions, 3656 flow [2022-12-13 19:07:02,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3656, PETRI_PLACES=199, PETRI_TRANSITIONS=189} [2022-12-13 19:07:02,278 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 127 predicate places. [2022-12-13 19:07:02,279 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 189 transitions, 3656 flow [2022-12-13 19:07:02,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 493.2692307692308) internal successors, (12825), 26 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:02,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:02,280 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 19:07:02,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-13 19:07:02,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:02,480 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:07:02,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:02,481 INFO L85 PathProgramCache]: Analyzing trace with hash -438693074, now seen corresponding path program 2 times [2022-12-13 19:07:02,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:02,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051367104] [2022-12-13 19:07:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:02,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:02,903 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 19:07:02,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:02,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051367104] [2022-12-13 19:07:02,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051367104] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:02,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878475574] [2022-12-13 19:07:02,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:07:02,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:02,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:02,904 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:02,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 19:07:03,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:07:03,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:07:03,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 19:07:03,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:03,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:07:03,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:07:03,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:07:03,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:07:03,946 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 19:07:03,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:05,497 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1160 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1160) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse1 .cse4)) (.cse3 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= .cse0 4294967295)) (<= 0 (+ .cse0 (select .cse1 .cse2) 2147483648)) (<= .cse0 0) (< (+ .cse3 2147483648) 0) (< 2147483647 .cse3))))) (forall ((v_ArrVal_1160 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1160) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse6 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (select .cse7 .cse4))) (or (not (<= .cse5 4294967295)) (not (<= .cse6 2147483647)) (<= 0 (+ .cse5 (select .cse7 .cse2) 2147483648)) (not (<= 0 (+ .cse6 2147483648))) (<= .cse5 0))))) (forall ((v_ArrVal_1160 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1160) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse10 .cse4)) (.cse8 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= .cse8 2147483647)) (< .cse9 0) (<= 0 (+ .cse9 (select .cse10 .cse2) 2147483648)) (< 0 .cse9) (not (<= 0 (+ .cse8 2147483648))))))) (forall ((v_ArrVal_1160 (Array Int Int))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1160) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse11 (select .cse12 .cse4)) (.cse13 (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse11 0) (<= 0 (+ .cse11 (select .cse12 .cse2) 2147483648)) (< 0 .cse11) (< (+ .cse13 2147483648) 0) (< 2147483647 .cse13))))))) is different from false [2022-12-13 19:07:05,572 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse6 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1158 Int) (v_ArrVal_1160 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse5 .cse6 v_ArrVal_1158)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1160) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (select .cse2 .cse4))) (or (< .cse0 0) (not (<= .cse1 2147483647)) (not (<= 0 (+ .cse1 2147483648))) (< 0 .cse0) (<= 0 (+ (select .cse2 .cse3) 2147483648 .cse0)))))) (forall ((v_ArrVal_1158 Int) (v_ArrVal_1160 (Array Int Int))) (let ((.cse9 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse5 .cse6 v_ArrVal_1158)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1160) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (select .cse9 .cse4))) (or (< (+ .cse7 2147483648) 0) (<= .cse8 0) (< 2147483647 .cse7) (not (<= .cse8 4294967295)) (<= 0 (+ (select .cse9 .cse3) 2147483648 .cse8)))))) (forall ((v_ArrVal_1158 Int) (v_ArrVal_1160 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse5 .cse6 v_ArrVal_1158)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1160) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse11 (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse10 (select .cse12 .cse4))) (or (< .cse10 0) (< (+ .cse11 2147483648) 0) (< 2147483647 .cse11) (< 0 .cse10) (<= 0 (+ (select .cse12 .cse3) 2147483648 .cse10)))))) (forall ((v_ArrVal_1158 Int) (v_ArrVal_1160 (Array Int Int))) (let ((.cse15 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse5 .cse6 v_ArrVal_1158)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1160) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse13 (select .cse15 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse14 (select .cse15 .cse4))) (or (not (<= .cse13 2147483647)) (<= .cse14 0) (not (<= 0 (+ .cse13 2147483648))) (not (<= .cse14 4294967295)) (<= 0 (+ (select .cse15 .cse3) 2147483648 .cse14)))))))) is different from false [2022-12-13 19:07:05,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:05,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 771 treesize of output 446 [2022-12-13 19:07:05,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 474 treesize of output 441 [2022-12-13 19:07:05,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 383 [2022-12-13 19:07:05,703 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:05,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 418 treesize of output 422 [2022-12-13 19:07:05,742 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:05,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 514 treesize of output 504 [2022-12-13 19:07:05,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 463 treesize of output 443 [2022-12-13 19:07:05,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 443 treesize of output 423 [2022-12-13 19:07:05,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:05,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 440 treesize of output 444 [2022-12-13 19:07:05,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 383 [2022-12-13 19:07:05,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:05,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 539 treesize of output 489 [2022-12-13 19:07:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-13 19:07:07,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878475574] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:07,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:07,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2022-12-13 19:07:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934423441] [2022-12-13 19:07:07,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:07,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 19:07:07,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:07,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 19:07:07,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=400, Unknown=2, NotChecked=82, Total=552 [2022-12-13 19:07:07,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1397 [2022-12-13 19:07:07,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 189 transitions, 3656 flow. Second operand has 24 states, 24 states have (on average 429.375) internal successors, (10305), 24 states have internal predecessors, (10305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:07,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:07,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1397 [2022-12-13 19:07:07,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:16,066 INFO L130 PetriNetUnfolder]: 6557/11159 cut-off events. [2022-12-13 19:07:16,066 INFO L131 PetriNetUnfolder]: For 130508/130508 co-relation queries the response was YES. [2022-12-13 19:07:16,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98576 conditions, 11159 events. 6557/11159 cut-off events. For 130508/130508 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 83999 event pairs, 1524 based on Foata normal form. 74/10765 useless extension candidates. Maximal degree in co-relation 98542. Up to 4092 conditions per place. [2022-12-13 19:07:16,143 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 483 selfloop transitions, 156 changer transitions 0/639 dead transitions. [2022-12-13 19:07:16,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 639 transitions, 12441 flow [2022-12-13 19:07:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 19:07:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-13 19:07:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 19451 transitions. [2022-12-13 19:07:16,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3094090511413346 [2022-12-13 19:07:16,157 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 19451 transitions. [2022-12-13 19:07:16,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 19451 transitions. [2022-12-13 19:07:16,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:16,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 19451 transitions. [2022-12-13 19:07:16,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 432.24444444444447) internal successors, (19451), 45 states have internal predecessors, (19451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:16,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 1397.0) internal successors, (64262), 46 states have internal predecessors, (64262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:16,198 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 1397.0) internal successors, (64262), 46 states have internal predecessors, (64262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:16,199 INFO L175 Difference]: Start difference. First operand has 199 places, 189 transitions, 3656 flow. Second operand 45 states and 19451 transitions. [2022-12-13 19:07:16,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 639 transitions, 12441 flow [2022-12-13 19:07:16,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 639 transitions, 11537 flow, removed 132 selfloop flow, removed 13 redundant places. [2022-12-13 19:07:16,448 INFO L231 Difference]: Finished difference. Result has 235 places, 261 transitions, 5376 flow [2022-12-13 19:07:16,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=3472, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5376, PETRI_PLACES=235, PETRI_TRANSITIONS=261} [2022-12-13 19:07:16,448 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 163 predicate places. [2022-12-13 19:07:16,448 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 261 transitions, 5376 flow [2022-12-13 19:07:16,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 429.375) internal successors, (10305), 24 states have internal predecessors, (10305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:16,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:16,449 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 19:07:16,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-12-13 19:07:16,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-12-13 19:07:16,651 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:07:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash -438693199, now seen corresponding path program 2 times [2022-12-13 19:07:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:16,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627337587] [2022-12-13 19:07:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:16,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:16,970 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 19:07:16,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627337587] [2022-12-13 19:07:16,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627337587] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216815249] [2022-12-13 19:07:16,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:07:16,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:16,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:16,971 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:16,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 19:07:17,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:07:17,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:07:17,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 19:07:17,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:17,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:07:17,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:07:17,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:07:17,938 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 19:07:17,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:19,738 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1197 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1197) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse0 2147483648) 0) (< 2147483647 .cse0) (< 0 (+ (select .cse1 .cse2) 9223372039002259456)))))) (forall ((v_ArrVal_1197 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1197) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse3 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= .cse3 2147483647)) (< 0 (+ (select .cse4 .cse2) 9223372039002259456)) (not (<= 0 .cse3)))))) (forall ((v_ArrVal_1197 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1197) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse6 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (select .cse7 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (not (<= .cse5 4294967295)) (not (<= 0 (+ .cse6 .cse5 2147483648))) (not (<= 0 (+ 9223372039002259455 .cse5))) (< 0 (+ (select .cse7 .cse2) 9223372039002259456)) (not (<= (+ .cse6 .cse5) 2147483647)))))) (forall ((v_ArrVal_1197 (Array Int Int))) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1197) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse8 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ .cse8 2147483648))) (< 0 (+ (select .cse9 .cse2) 9223372039002259456)) (<= 0 .cse8))))))) is different from false [2022-12-13 19:07:19,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:19,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 393 treesize of output 214 [2022-12-13 19:07:19,780 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:19,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 416 treesize of output 358 [2022-12-13 19:07:19,790 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:19,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 322 treesize of output 298 [2022-12-13 19:07:19,799 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:19,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 298 treesize of output 290 [2022-12-13 19:07:19,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:19,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 290 treesize of output 282 [2022-12-13 19:07:19,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:19,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 282 treesize of output 274 [2022-12-13 19:07:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 19:07:20,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216815249] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:20,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:20,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 19:07:20,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288618058] [2022-12-13 19:07:20,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:20,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 19:07:20,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:20,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 19:07:20,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=410, Unknown=1, NotChecked=40, Total=506 [2022-12-13 19:07:20,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 504 out of 1397 [2022-12-13 19:07:20,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 261 transitions, 5376 flow. Second operand has 23 states, 23 states have (on average 505.4347826086956) internal successors, (11625), 23 states have internal predecessors, (11625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:20,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:20,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 504 of 1397 [2022-12-13 19:07:20,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:25,621 INFO L130 PetriNetUnfolder]: 6509/11043 cut-off events. [2022-12-13 19:07:25,621 INFO L131 PetriNetUnfolder]: For 128289/128289 co-relation queries the response was YES. [2022-12-13 19:07:25,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96569 conditions, 11043 events. 6509/11043 cut-off events. For 128289/128289 co-relation queries the response was YES. Maximal size of possible extension queue 839. Compared 82643 event pairs, 1997 based on Foata normal form. 3/10584 useless extension candidates. Maximal degree in co-relation 96530. Up to 6610 conditions per place. [2022-12-13 19:07:25,700 INFO L137 encePairwiseOnDemand]: 1386/1397 looper letters, 231 selfloop transitions, 126 changer transitions 0/357 dead transitions. [2022-12-13 19:07:25,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 357 transitions, 7377 flow [2022-12-13 19:07:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 19:07:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 19:07:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 8142 transitions. [2022-12-13 19:07:25,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36426270579813885 [2022-12-13 19:07:25,706 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 8142 transitions. [2022-12-13 19:07:25,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 8142 transitions. [2022-12-13 19:07:25,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:25,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 8142 transitions. [2022-12-13 19:07:25,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 508.875) internal successors, (8142), 16 states have internal predecessors, (8142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:25,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1397.0) internal successors, (23749), 17 states have internal predecessors, (23749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:25,722 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1397.0) internal successors, (23749), 17 states have internal predecessors, (23749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:25,722 INFO L175 Difference]: Start difference. First operand has 235 places, 261 transitions, 5376 flow. Second operand 16 states and 8142 transitions. [2022-12-13 19:07:25,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 357 transitions, 7377 flow [2022-12-13 19:07:25,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 357 transitions, 6895 flow, removed 40 selfloop flow, removed 18 redundant places. [2022-12-13 19:07:25,924 INFO L231 Difference]: Finished difference. Result has 231 places, 257 transitions, 5090 flow [2022-12-13 19:07:25,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4787, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5090, PETRI_PLACES=231, PETRI_TRANSITIONS=257} [2022-12-13 19:07:25,925 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 159 predicate places. [2022-12-13 19:07:25,925 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 257 transitions, 5090 flow [2022-12-13 19:07:25,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 505.4347826086956) internal successors, (11625), 23 states have internal predecessors, (11625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:25,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:25,926 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 19:07:25,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-13 19:07:26,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:26,128 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:07:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:26,129 INFO L85 PathProgramCache]: Analyzing trace with hash -438693078, now seen corresponding path program 3 times [2022-12-13 19:07:26,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:26,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932446816] [2022-12-13 19:07:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:26,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:26,629 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 19:07:26,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:26,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932446816] [2022-12-13 19:07:26,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932446816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:26,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021683621] [2022-12-13 19:07:26,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:07:26,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:26,631 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:26,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 19:07:26,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:07:26,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:07:26,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 19:07:26,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:26,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:07:26,876 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 19:07:26,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:07:26,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:07:26,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:07:27,468 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-12-13 19:07:27,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 535 treesize of output 476 [2022-12-13 19:07:27,876 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 19:07:27,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:29,245 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1236 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse2 .cse3)) (.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse0 2147483648) (< 2147483647 (+ .cse1 .cse0)) (not (<= 0 (+ .cse1 2147483648))))))) (forall ((v_ArrVal_1236 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse4 (select .cse6 .cse3)) (.cse5 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse4 2147483648) (< 2147483647 (+ .cse5 .cse4)) (< (+ .cse5 2147483648) 0))))))) is different from false [2022-12-13 19:07:29,272 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse5 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1236 (Array Int Int)) (v_ArrVal_1235 Int)) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse4 .cse5 v_ArrVal_1235)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (select .cse2 .cse3))) (or (< 2147483647 (+ .cse0 .cse1)) (not (<= 0 (+ .cse1 2147483648))) (< .cse0 2147483648))))) (forall ((v_ArrVal_1236 (Array Int Int)) (v_ArrVal_1235 Int)) (let ((.cse8 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse4 .cse5 v_ArrVal_1235)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse6 (select .cse8 .cse3)) (.cse7 (select .cse8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 (+ .cse6 .cse7)) (< .cse6 2147483648) (< (+ .cse7 2147483648) 0))))))) is different from false [2022-12-13 19:07:29,310 INFO L321 Elim1Store]: treesize reduction 58, result has 45.8 percent of original size [2022-12-13 19:07:29,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 246 treesize of output 152 [2022-12-13 19:07:29,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 154 [2022-12-13 19:07:29,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2022-12-13 19:07:29,332 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:29,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 138 [2022-12-13 19:07:29,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:29,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 168 [2022-12-13 19:07:29,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:29,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 112 [2022-12-13 19:07:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-13 19:07:29,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021683621] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:29,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:29,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2022-12-13 19:07:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774156295] [2022-12-13 19:07:29,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:29,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 19:07:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:29,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 19:07:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=443, Unknown=2, NotChecked=86, Total=600 [2022-12-13 19:07:29,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1397 [2022-12-13 19:07:29,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 257 transitions, 5090 flow. Second operand has 25 states, 25 states have (on average 416.32) internal successors, (10408), 25 states have internal predecessors, (10408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:29,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:29,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1397 [2022-12-13 19:07:29,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:38,112 INFO L130 PetriNetUnfolder]: 6710/11372 cut-off events. [2022-12-13 19:07:38,112 INFO L131 PetriNetUnfolder]: For 140063/140063 co-relation queries the response was YES. [2022-12-13 19:07:38,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98337 conditions, 11372 events. 6710/11372 cut-off events. For 140063/140063 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 85264 event pairs, 1564 based on Foata normal form. 94/10999 useless extension candidates. Maximal degree in co-relation 98297. Up to 4645 conditions per place. [2022-12-13 19:07:38,184 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 644 selfloop transitions, 147 changer transitions 0/791 dead transitions. [2022-12-13 19:07:38,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 791 transitions, 13916 flow [2022-12-13 19:07:38,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 19:07:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-13 19:07:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 18073 transitions. [2022-12-13 19:07:38,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.30086064823292435 [2022-12-13 19:07:38,196 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 18073 transitions. [2022-12-13 19:07:38,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 18073 transitions. [2022-12-13 19:07:38,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:38,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 18073 transitions. [2022-12-13 19:07:38,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 420.30232558139534) internal successors, (18073), 43 states have internal predecessors, (18073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:38,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 1397.0) internal successors, (61468), 44 states have internal predecessors, (61468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:38,234 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 1397.0) internal successors, (61468), 44 states have internal predecessors, (61468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:38,234 INFO L175 Difference]: Start difference. First operand has 231 places, 257 transitions, 5090 flow. Second operand 43 states and 18073 transitions. [2022-12-13 19:07:38,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 791 transitions, 13916 flow [2022-12-13 19:07:38,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 791 transitions, 13640 flow, removed 10 selfloop flow, removed 15 redundant places. [2022-12-13 19:07:38,453 INFO L231 Difference]: Finished difference. Result has 260 places, 268 transitions, 5337 flow [2022-12-13 19:07:38,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4554, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5337, PETRI_PLACES=260, PETRI_TRANSITIONS=268} [2022-12-13 19:07:38,454 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 188 predicate places. [2022-12-13 19:07:38,454 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 268 transitions, 5337 flow [2022-12-13 19:07:38,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 416.32) internal successors, (10408), 25 states have internal predecessors, (10408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:38,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:38,455 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:38,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-13 19:07:38,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:38,656 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:07:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash -664228151, now seen corresponding path program 2 times [2022-12-13 19:07:38,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:38,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391126738] [2022-12-13 19:07:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:38,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:39,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391126738] [2022-12-13 19:07:39,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391126738] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:39,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056822224] [2022-12-13 19:07:39,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:07:39,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:39,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:39,197 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:39,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 19:07:39,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:07:39,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:07:39,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 19:07:39,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:39,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:07:39,492 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 19:07:39,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:07:39,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:07:39,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:07:39,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:07:39,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:07:39,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:39,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 427 treesize of output 275 [2022-12-13 19:07:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:40,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:41,968 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1279 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1279) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1280) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse1 (select .cse3 .cse4))) (let ((.cse2 (+ .cse0 .cse1))) (or (< (+ .cse0 2147483648) 0) (< .cse1 2147483648) (< .cse2 c_~cap2~0) (<= c_~cap2~0 .cse0) (< 2147483647 .cse2)))))) (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1279 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1279) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1280) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse5 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (select .cse7 .cse4))) (or (< (+ .cse5 2147483648) 0) (< .cse6 2147483648) (< .cse5 c_~cap2~0) (< 2147483647 (+ .cse5 .cse6)))))))) is different from false [2022-12-13 19:07:41,999 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse5 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1277 Int) (v_ArrVal_1279 (Array Int Int))) (let ((.cse2 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse4 .cse5 v_ArrVal_1277)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1279) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1280) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse1 (select .cse2 .cse3))) (or (< (+ .cse0 2147483648) 0) (< .cse0 c_~cap2~0) (< .cse1 2147483648) (< 2147483647 (+ .cse0 .cse1)))))) (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1277 Int) (v_ArrVal_1279 (Array Int Int))) (let ((.cse9 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse4 .cse5 v_ArrVal_1277)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1279) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1280) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (select .cse9 .cse3))) (let ((.cse6 (+ .cse7 .cse8))) (or (< .cse6 c_~cap2~0) (< (+ .cse7 2147483648) 0) (< .cse8 2147483648) (<= c_~cap2~0 .cse7) (< 2147483647 .cse6)))))))) is different from false [2022-12-13 19:07:42,036 INFO L321 Elim1Store]: treesize reduction 58, result has 45.8 percent of original size [2022-12-13 19:07:42,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 398 treesize of output 228 [2022-12-13 19:07:42,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 666 treesize of output 635 [2022-12-13 19:07:42,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:42,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1250 treesize of output 1186 [2022-12-13 19:07:42,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1152 treesize of output 1112 [2022-12-13 19:07:42,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1112 treesize of output 1032 [2022-12-13 19:07:42,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:42,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1074 treesize of output 1048 [2022-12-13 19:07:42,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:42,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1004 treesize of output 976 [2022-12-13 19:07:42,170 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:42,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 976 treesize of output 920 [2022-12-13 19:07:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-13 19:07:43,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056822224] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:43,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:43,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:07:43,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980562601] [2022-12-13 19:07:43,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:43,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:07:43,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:07:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=481, Unknown=4, NotChecked=90, Total=650 [2022-12-13 19:07:44,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 1397 [2022-12-13 19:07:44,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 268 transitions, 5337 flow. Second operand has 26 states, 26 states have (on average 493.2692307692308) internal successors, (12825), 26 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:44,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:44,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 1397 [2022-12-13 19:07:44,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:53,015 INFO L130 PetriNetUnfolder]: 5908/10088 cut-off events. [2022-12-13 19:07:53,015 INFO L131 PetriNetUnfolder]: For 158358/158358 co-relation queries the response was YES. [2022-12-13 19:07:53,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85311 conditions, 10088 events. 5908/10088 cut-off events. For 158358/158358 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 75668 event pairs, 454 based on Foata normal form. 556/10211 useless extension candidates. Maximal degree in co-relation 85268. Up to 2191 conditions per place. [2022-12-13 19:07:53,080 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 964 selfloop transitions, 60 changer transitions 24/1048 dead transitions. [2022-12-13 19:07:53,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1048 transitions, 24566 flow [2022-12-13 19:07:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 19:07:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 19:07:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 11563 transitions. [2022-12-13 19:07:53,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3598705300177399 [2022-12-13 19:07:53,088 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 11563 transitions. [2022-12-13 19:07:53,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 11563 transitions. [2022-12-13 19:07:53,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:53,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 11563 transitions. [2022-12-13 19:07:53,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 502.7391304347826) internal successors, (11563), 23 states have internal predecessors, (11563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:53,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 1397.0) internal successors, (33528), 24 states have internal predecessors, (33528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:53,112 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 1397.0) internal successors, (33528), 24 states have internal predecessors, (33528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:53,112 INFO L175 Difference]: Start difference. First operand has 260 places, 268 transitions, 5337 flow. Second operand 23 states and 11563 transitions. [2022-12-13 19:07:53,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1048 transitions, 24566 flow [2022-12-13 19:07:53,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 1048 transitions, 24339 flow, removed 35 selfloop flow, removed 28 redundant places. [2022-12-13 19:07:53,296 INFO L231 Difference]: Finished difference. Result has 253 places, 249 transitions, 4932 flow [2022-12-13 19:07:53,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4812, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4932, PETRI_PLACES=253, PETRI_TRANSITIONS=249} [2022-12-13 19:07:53,297 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 181 predicate places. [2022-12-13 19:07:53,297 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 249 transitions, 4932 flow [2022-12-13 19:07:53,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 493.2692307692308) internal successors, (12825), 26 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:53,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:53,298 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:53,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 19:07:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-13 19:07:53,499 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:07:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash -664228189, now seen corresponding path program 2 times [2022-12-13 19:07:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:53,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736568647] [2022-12-13 19:07:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:53,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:53,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:53,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736568647] [2022-12-13 19:07:53,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736568647] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:53,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482437455] [2022-12-13 19:07:53,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:07:53,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:53,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:53,818 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:53,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 19:07:54,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:07:54,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:07:54,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 19:07:54,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:54,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:07:54,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:07:54,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:07:54,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:07:54,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:07:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:54,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:56,851 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse19 (* c_~j~0 4))) (let ((.cse9 (<= 0 c_~bag2~0)) (.cse0 (not (<= c_~bag2~0 4294967295))) (.cse1 (not (<= (+ c_~bag2~0 c_~sum2~0) 2147483647))) (.cse2 (not (<= 0 (+ c_~bag2~0 c_~sum2~0 2147483648)))) (.cse4 (+ c_~A~0.offset 8 .cse19)) (.cse8 (+ c_~A~0.offset .cse19)) (.cse7 (+ c_~A~0.offset .cse19 4))) (and (or .cse0 .cse1 .cse2 (forall ((v_ArrVal_1322 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1322) c_~A~0.base))) (let ((.cse5 (select .cse3 .cse8)) (.cse6 (select .cse3 .cse7))) (or (< (select .cse3 .cse4) 4294967296) (not (<= 0 (+ .cse5 .cse6 2147483648))) (not (<= (+ .cse5 c_~bag2~0) 2147483647)) (< c_~bag2~0 (+ .cse6 1)))))) (not .cse9)) (or .cse1 .cse2 .cse9 (forall ((v_ArrVal_1322 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1322) c_~A~0.base))) (let ((.cse11 (select .cse10 .cse8)) (.cse12 (select .cse10 .cse7))) (or (< (select .cse10 .cse4) 4294967296) (not (<= 0 (+ .cse11 .cse12 2147483648))) (< 4294967295 .cse11) (< 2147483647 (+ .cse11 c_~bag2~0)) (< c_~bag2~0 (+ .cse12 1))))))) (forall ((v_ArrVal_1322 (Array Int Int))) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1322) c_~A~0.base))) (let ((.cse15 (select .cse13 .cse7)) (.cse14 (select .cse13 .cse8))) (or (< (select .cse13 .cse4) 4294967296) (< (+ .cse14 9223372039002259455) 0) (not (<= 0 (+ .cse14 .cse15 c_~bag2~0 2147483648))) (not (<= .cse14 4294967295)) (not (<= 0 (+ .cse14 c_~bag2~0 2147483648))) (not (<= (+ .cse14 .cse15 c_~bag2~0) 2147483647)) (not (<= (+ .cse14 c_~bag2~0) 2147483647)))))) (or .cse0 .cse1 .cse2 (forall ((v_ArrVal_1322 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1322) c_~A~0.base))) (let ((.cse17 (select .cse18 .cse7)) (.cse16 (select .cse18 .cse8))) (or (< (+ .cse16 .cse17 2147483648) 0) (< (select .cse18 .cse4) 4294967296) (not (<= 0 (+ .cse16 c_~bag2~0 c_~sum2~0 2147483648))) (not (<= (+ .cse16 c_~bag2~0 c_~sum2~0) 2147483647)) (< 4294967295 .cse17) (< 2147483647 (+ .cse16 .cse17)) (not (<= 0 (+ .cse16 c_~bag2~0 2147483648))) (not (<= (+ .cse16 c_~bag2~0) 2147483647)))))))))) is different from false [2022-12-13 19:07:57,003 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1322 (Array Int Int)) (v_ArrVal_1321 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1321) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1322) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse3 (select .cse1 .cse4)) (.cse0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= .cse0 2147483647)) (< (select .cse1 .cse2) 4294967296) (< 0 (+ .cse3 1)) (not (<= 0 (+ .cse3 .cse0 2147483648))))))) (forall ((v_ArrVal_1322 (Array Int Int)) (v_ArrVal_1321 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1321) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1322) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse5 (select .cse7 .cse4)) (.cse6 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 (+ .cse5 .cse6)) (not (<= .cse6 2147483647)) (< (select .cse7 .cse2) 4294967296) (not (<= 0 (+ .cse6 2147483648))) (< (+ .cse5 .cse6 2147483648) 0))))) (forall ((v_ArrVal_1322 (Array Int Int)) (v_ArrVal_1321 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1321) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1322) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse8 (select .cse10 .cse4)) (.cse9 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 (+ .cse8 .cse9)) (< (select .cse10 .cse2) 4294967296) (< (+ .cse8 .cse9 2147483648) 0) (< (+ .cse9 2147483648) 0) (< 2147483647 .cse9))))))) is different from false [2022-12-13 19:07:57,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:57,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 505 treesize of output 290 [2022-12-13 19:07:57,058 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:57,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1258 treesize of output 1160 [2022-12-13 19:07:57,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:57,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1126 treesize of output 1086 [2022-12-13 19:07:57,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:57,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1086 treesize of output 1066 [2022-12-13 19:07:57,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:57,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1066 treesize of output 1002 [2022-12-13 19:07:57,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:57,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1002 treesize of output 970 [2022-12-13 19:07:57,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:57,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 970 treesize of output 930 [2022-12-13 19:07:57,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:07:57,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 930 treesize of output 910 [2022-12-13 19:07:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 19:07:57,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482437455] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:57,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:57,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:07:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943988740] [2022-12-13 19:07:57,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:57,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:07:57,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:07:57,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=493, Unknown=2, NotChecked=90, Total=650 [2022-12-13 19:07:57,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:07:57,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 249 transitions, 4932 flow. Second operand has 26 states, 26 states have (on average 497.2692307692308) internal successors, (12929), 26 states have internal predecessors, (12929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:57,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:57,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:07:57,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:08:04,051 INFO L130 PetriNetUnfolder]: 5163/9013 cut-off events. [2022-12-13 19:08:04,051 INFO L131 PetriNetUnfolder]: For 150621/150621 co-relation queries the response was YES. [2022-12-13 19:08:04,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77875 conditions, 9013 events. 5163/9013 cut-off events. For 150621/150621 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 67620 event pairs, 186 based on Foata normal form. 546/9260 useless extension candidates. Maximal degree in co-relation 77831. Up to 2144 conditions per place. [2022-12-13 19:08:04,113 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 739 selfloop transitions, 53 changer transitions 24/816 dead transitions. [2022-12-13 19:08:04,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 816 transitions, 18999 flow [2022-12-13 19:08:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:08:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 19:08:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 8601 transitions. [2022-12-13 19:08:04,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3621626173733631 [2022-12-13 19:08:04,120 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 8601 transitions. [2022-12-13 19:08:04,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 8601 transitions. [2022-12-13 19:08:04,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:08:04,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 8601 transitions. [2022-12-13 19:08:04,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 505.94117647058823) internal successors, (8601), 17 states have internal predecessors, (8601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:04,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1397.0) internal successors, (25146), 18 states have internal predecessors, (25146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:04,136 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1397.0) internal successors, (25146), 18 states have internal predecessors, (25146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:04,136 INFO L175 Difference]: Start difference. First operand has 253 places, 249 transitions, 4932 flow. Second operand 17 states and 8601 transitions. [2022-12-13 19:08:04,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 816 transitions, 18999 flow [2022-12-13 19:08:04,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 816 transitions, 18925 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-12-13 19:08:04,289 INFO L231 Difference]: Finished difference. Result has 254 places, 237 transitions, 4745 flow [2022-12-13 19:08:04,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4639, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4745, PETRI_PLACES=254, PETRI_TRANSITIONS=237} [2022-12-13 19:08:04,290 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 182 predicate places. [2022-12-13 19:08:04,290 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 237 transitions, 4745 flow [2022-12-13 19:08:04,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 497.2692307692308) internal successors, (12929), 26 states have internal predecessors, (12929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:04,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:08:04,291 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 19:08:04,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-12-13 19:08:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-12-13 19:08:04,492 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:08:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash -438693131, now seen corresponding path program 3 times [2022-12-13 19:08:04,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:04,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305420812] [2022-12-13 19:08:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:04,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:04,816 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 19:08:04,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:04,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305420812] [2022-12-13 19:08:04,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305420812] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:04,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325998833] [2022-12-13 19:08:04,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:08:04,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:04,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:04,817 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:04,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 19:08:05,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:08:05,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:08:05,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 19:08:05,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:05,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:08:05,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:08:05,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:08:05,669 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 19:08:05,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:07,235 WARN L837 $PredicateComparison]: unable to prove that (or (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (let ((.cse5 (not (< 2 c_~N~0))) (.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (or (forall ((v_ArrVal_1359 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1359) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (select .cse2 .cse4))) (or (not (<= .cse0 4294967295)) (not (<= (+ .cse1 .cse0) 2147483647)) (< (select .cse2 .cse3) 4294967296) (not (<= 0 (+ .cse1 .cse0 2147483648))) (not (<= 0 (+ 9223372039002259455 .cse0))))))) .cse5) (or (forall ((v_ArrVal_1359 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1359) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select .cse6 .cse3) 4294967296) (not (<= .cse7 2147483647)) (not (<= 0 (+ .cse7 2147483648))))))) .cse5) (or .cse5 (forall ((v_ArrVal_1359 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1359) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse10 .cse4)) (.cse8 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= (+ .cse8 .cse9) 2147483647)) (< (select .cse10 .cse3) 4294967296) (< 2147483647 .cse8) (not (<= 0 (+ .cse8 .cse9 2147483648))) (< (+ .cse8 2147483648) 0)))))) (or (<= c_~N~0 2) (forall ((v_ArrVal_1359 (Array Int Int))) (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1359) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse12 (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select .cse11 .cse3) 4294967296) (< 2147483647 .cse12) (< (+ .cse12 2147483648) 0))))))))) is different from false [2022-12-13 19:08:07,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:07,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 267 [2022-12-13 19:08:07,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:07,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 492 treesize of output 414 [2022-12-13 19:08:07,303 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:07,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 380 treesize of output 360 [2022-12-13 19:08:07,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:07,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 360 treesize of output 352 [2022-12-13 19:08:07,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:07,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 352 treesize of output 344 [2022-12-13 19:08:07,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:07,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 344 treesize of output 320 [2022-12-13 19:08:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 19:08:07,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325998833] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:07,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:07,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 19:08:07,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818071215] [2022-12-13 19:08:07,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:07,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 19:08:07,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 19:08:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=403, Unknown=1, NotChecked=40, Total=506 [2022-12-13 19:08:07,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 1397 [2022-12-13 19:08:07,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 237 transitions, 4745 flow. Second operand has 23 states, 23 states have (on average 496.4347826086956) internal successors, (11418), 23 states have internal predecessors, (11418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:07,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:08:07,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 1397 [2022-12-13 19:08:07,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:08:18,052 INFO L130 PetriNetUnfolder]: 6000/10275 cut-off events. [2022-12-13 19:08:18,052 INFO L131 PetriNetUnfolder]: For 140599/140599 co-relation queries the response was YES. [2022-12-13 19:08:18,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93370 conditions, 10275 events. 6000/10275 cut-off events. For 140599/140599 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 76514 event pairs, 1425 based on Foata normal form. 63/10041 useless extension candidates. Maximal degree in co-relation 93326. Up to 3521 conditions per place. [2022-12-13 19:08:18,120 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 374 selfloop transitions, 184 changer transitions 15/573 dead transitions. [2022-12-13 19:08:18,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 573 transitions, 11043 flow [2022-12-13 19:08:18,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 19:08:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-13 19:08:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 22019 transitions. [2022-12-13 19:08:18,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35821891065269734 [2022-12-13 19:08:18,132 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 22019 transitions. [2022-12-13 19:08:18,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 22019 transitions. [2022-12-13 19:08:18,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:08:18,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 22019 transitions. [2022-12-13 19:08:18,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 500.4318181818182) internal successors, (22019), 44 states have internal predecessors, (22019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:18,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 1397.0) internal successors, (62865), 45 states have internal predecessors, (62865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:18,175 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 1397.0) internal successors, (62865), 45 states have internal predecessors, (62865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:18,175 INFO L175 Difference]: Start difference. First operand has 254 places, 237 transitions, 4745 flow. Second operand 44 states and 22019 transitions. [2022-12-13 19:08:18,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 573 transitions, 11043 flow [2022-12-13 19:08:18,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 573 transitions, 10458 flow, removed 32 selfloop flow, removed 9 redundant places. [2022-12-13 19:08:18,429 INFO L231 Difference]: Finished difference. Result has 297 places, 297 transitions, 6693 flow [2022-12-13 19:08:18,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=4529, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6693, PETRI_PLACES=297, PETRI_TRANSITIONS=297} [2022-12-13 19:08:18,429 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 225 predicate places. [2022-12-13 19:08:18,429 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 297 transitions, 6693 flow [2022-12-13 19:08:18,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 496.4347826086956) internal successors, (11418), 23 states have internal predecessors, (11418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:18,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:08:18,430 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:08:18,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-12-13 19:08:18,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-12-13 19:08:18,631 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:08:18,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash -714588230, now seen corresponding path program 2 times [2022-12-13 19:08:18,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:18,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864727862] [2022-12-13 19:08:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:18,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:19,027 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 19:08:19,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:19,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864727862] [2022-12-13 19:08:19,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864727862] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:19,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527896341] [2022-12-13 19:08:19,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:08:19,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:19,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:19,029 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:19,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 19:08:19,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:08:19,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:08:19,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 19:08:19,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:19,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:08:19,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:08:19,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:08:19,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:08:19,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 94 [2022-12-13 19:08:20,048 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 19:08:20,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:20,071 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1401 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1401) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) is different from false [2022-12-13 19:08:21,468 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1400 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1400))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse0 2147483648) 0) (forall ((v_ArrVal_1401 (Array Int Int))) (< 0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1401) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) 9223372039002259456))) (< 2147483647 .cse0))))) (forall ((v_ArrVal_1401 (Array Int Int)) (v_ArrVal_1400 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1400))) (let ((.cse6 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse5 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (select .cse6 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (< 0 (+ (select (select (store .cse3 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1401) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) 9223372039002259456)) (not (<= 0 (+ .cse4 .cse5 2147483648))) (not (<= 0 (+ .cse4 9223372039002259455))) (not (<= (+ .cse4 .cse5) 2147483647)) (not (<= .cse4 4294967295))))))) (forall ((v_ArrVal_1400 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1400))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ .cse7 2147483648))) (not (<= .cse7 2147483647)) (forall ((v_ArrVal_1401 (Array Int Int))) (< 0 (+ (select (select (store .cse8 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1401) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) 9223372039002259456))))))))) is different from false [2022-12-13 19:08:21,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:21,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 187 [2022-12-13 19:08:21,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:21,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 533 treesize of output 483 [2022-12-13 19:08:21,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 447 treesize of output 439 [2022-12-13 19:08:21,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:21,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 439 treesize of output 415 [2022-12-13 19:08:21,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 415 treesize of output 399 [2022-12-13 19:08:21,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 399 treesize of output 391 [2022-12-13 19:08:21,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:21,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 391 treesize of output 383 [2022-12-13 19:08:21,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:21,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 383 treesize of output 371 [2022-12-13 19:08:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 19:08:21,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527896341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:21,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:21,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:08:21,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584962440] [2022-12-13 19:08:21,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:21,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:08:21,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:21,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:08:21,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=493, Unknown=2, NotChecked=90, Total=650 [2022-12-13 19:08:21,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1397 [2022-12-13 19:08:21,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 297 transitions, 6693 flow. Second operand has 26 states, 26 states have (on average 502.38461538461536) internal successors, (13062), 26 states have internal predecessors, (13062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:21,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:08:21,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1397 [2022-12-13 19:08:21,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:08:28,271 INFO L130 PetriNetUnfolder]: 6787/11843 cut-off events. [2022-12-13 19:08:28,271 INFO L131 PetriNetUnfolder]: For 148397/148397 co-relation queries the response was YES. [2022-12-13 19:08:28,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111593 conditions, 11843 events. 6787/11843 cut-off events. For 148397/148397 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 92184 event pairs, 1245 based on Foata normal form. 674/12172 useless extension candidates. Maximal degree in co-relation 111540. Up to 3396 conditions per place. [2022-12-13 19:08:28,367 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 444 selfloop transitions, 136 changer transitions 11/591 dead transitions. [2022-12-13 19:08:28,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 591 transitions, 11858 flow [2022-12-13 19:08:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:08:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 19:08:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 7146 transitions. [2022-12-13 19:08:28,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36537478269761736 [2022-12-13 19:08:28,373 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 7146 transitions. [2022-12-13 19:08:28,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 7146 transitions. [2022-12-13 19:08:28,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:08:28,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 7146 transitions. [2022-12-13 19:08:28,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 510.42857142857144) internal successors, (7146), 14 states have internal predecessors, (7146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:28,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1397.0) internal successors, (20955), 15 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:28,388 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1397.0) internal successors, (20955), 15 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:28,388 INFO L175 Difference]: Start difference. First operand has 297 places, 297 transitions, 6693 flow. Second operand 14 states and 7146 transitions. [2022-12-13 19:08:28,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 591 transitions, 11858 flow [2022-12-13 19:08:29,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 591 transitions, 11612 flow, removed 33 selfloop flow, removed 27 redundant places. [2022-12-13 19:08:29,061 INFO L231 Difference]: Finished difference. Result has 284 places, 301 transitions, 7247 flow [2022-12-13 19:08:29,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6066, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7247, PETRI_PLACES=284, PETRI_TRANSITIONS=301} [2022-12-13 19:08:29,061 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 212 predicate places. [2022-12-13 19:08:29,061 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 301 transitions, 7247 flow [2022-12-13 19:08:29,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 502.38461538461536) internal successors, (13062), 26 states have internal predecessors, (13062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:29,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:08:29,063 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:08:29,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-12-13 19:08:29,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-12-13 19:08:29,264 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:08:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash 883768174, now seen corresponding path program 3 times [2022-12-13 19:08:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:29,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127190132] [2022-12-13 19:08:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:29,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:08:29,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127190132] [2022-12-13 19:08:29,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127190132] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925953919] [2022-12-13 19:08:29,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:08:29,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:29,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:29,502 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:29,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 19:08:29,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:08:29,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:08:29,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:08:29,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:30,672 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-13 19:08:30,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 754 treesize of output 482 [2022-12-13 19:08:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:08:30,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:33,172 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2022-12-13 19:08:33,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1314 treesize of output 756 [2022-12-13 19:08:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:08:33,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925953919] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:33,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:33,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2022-12-13 19:08:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122440254] [2022-12-13 19:08:33,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:33,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 19:08:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 19:08:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-12-13 19:08:34,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 1397 [2022-12-13 19:08:34,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 301 transitions, 7247 flow. Second operand has 25 states, 25 states have (on average 528.4) internal successors, (13210), 25 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:34,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:08:34,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 1397 [2022-12-13 19:08:34,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:08:40,012 INFO L130 PetriNetUnfolder]: 6273/11073 cut-off events. [2022-12-13 19:08:40,012 INFO L131 PetriNetUnfolder]: For 276118/276118 co-relation queries the response was YES. [2022-12-13 19:08:40,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107961 conditions, 11073 events. 6273/11073 cut-off events. For 276118/276118 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 87359 event pairs, 1190 based on Foata normal form. 448/11176 useless extension candidates. Maximal degree in co-relation 107911. Up to 3140 conditions per place. [2022-12-13 19:08:40,092 INFO L137 encePairwiseOnDemand]: 1388/1397 looper letters, 746 selfloop transitions, 34 changer transitions 102/882 dead transitions. [2022-12-13 19:08:40,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 882 transitions, 25399 flow [2022-12-13 19:08:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:08:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 19:08:40,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 7516 transitions. [2022-12-13 19:08:40,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38429287248184885 [2022-12-13 19:08:40,098 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 7516 transitions. [2022-12-13 19:08:40,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 7516 transitions. [2022-12-13 19:08:40,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:08:40,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 7516 transitions. [2022-12-13 19:08:40,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 536.8571428571429) internal successors, (7516), 14 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:40,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1397.0) internal successors, (20955), 15 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:40,113 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1397.0) internal successors, (20955), 15 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:40,113 INFO L175 Difference]: Start difference. First operand has 284 places, 301 transitions, 7247 flow. Second operand 14 states and 7516 transitions. [2022-12-13 19:08:40,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 882 transitions, 25399 flow [2022-12-13 19:08:40,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 882 transitions, 23418 flow, removed 82 selfloop flow, removed 13 redundant places. [2022-12-13 19:08:40,434 INFO L231 Difference]: Finished difference. Result has 283 places, 281 transitions, 6509 flow [2022-12-13 19:08:40,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6687, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6509, PETRI_PLACES=283, PETRI_TRANSITIONS=281} [2022-12-13 19:08:40,435 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 211 predicate places. [2022-12-13 19:08:40,435 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 281 transitions, 6509 flow [2022-12-13 19:08:40,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 528.4) internal successors, (13210), 25 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:40,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:08:40,436 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:08:40,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-12-13 19:08:40,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-12-13 19:08:40,638 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:08:40,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash -951695325, now seen corresponding path program 1 times [2022-12-13 19:08:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:40,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709132459] [2022-12-13 19:08:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:41,110 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 19:08:41,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:41,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709132459] [2022-12-13 19:08:41,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709132459] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:41,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638469177] [2022-12-13 19:08:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:41,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:41,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:41,111 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:41,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-13 19:08:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:41,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 19:08:41,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:41,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 19:08:41,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:08:41,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:08:41,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:08:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:08:41,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:08:42,659 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 19:08:42,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:44,546 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1483 (Array Int Int)) (v_ArrVal_1482 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1482) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1483) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (select .cse3 .cse5)) (.cse2 (select .cse3 .cse4))) (or (not (<= 0 (+ .cse0 .cse1 2147483648))) (< .cse2 0) (not (<= .cse1 2147483647)) (<= 0 (+ .cse0 .cse2 2147483648)))))) (forall ((v_ArrVal_1483 (Array Int Int)) (v_ArrVal_1482 (Array Int Int))) (let ((.cse9 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1482) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1483) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse9 .cse4)) (.cse8 (select .cse9 .cse5)) (.cse6 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse6) (< .cse7 0) (<= 0 (+ .cse8 .cse7 2147483648)) (< (+ .cse8 2147483647 .cse6) 0))))))) is different from false [2022-12-13 19:08:44,582 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse7 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1480 Int) (v_ArrVal_1483 (Array Int Int)) (v_ArrVal_1482 (Array Int Int))) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_1480)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1482) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1483) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse3 .cse5)) (.cse2 (select .cse3 .cse4)) (.cse0 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ .cse0 .cse1 2147483648))) (<= 0 (+ .cse1 .cse2 2147483648)) (< .cse2 0) (not (<= .cse0 2147483647)))))) (forall ((v_ArrVal_1480 Int) (v_ArrVal_1483 (Array Int Int)) (v_ArrVal_1482 (Array Int Int))) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_1480)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1482) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1483) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse11 .cse4)) (.cse10 (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (select .cse11 .cse5))) (or (<= 0 (+ .cse8 .cse9 2147483648)) (< 2147483647 .cse10) (< .cse9 0) (< (+ .cse10 2147483647 .cse8) 0))))))) is different from false [2022-12-13 19:08:44,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:44,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 417 treesize of output 237 [2022-12-13 19:08:44,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:44,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1224 treesize of output 1182 [2022-12-13 19:08:44,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1141 treesize of output 1101 [2022-12-13 19:08:44,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1101 treesize of output 1021 [2022-12-13 19:08:44,714 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:44,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1081 treesize of output 1047 [2022-12-13 19:08:44,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:44,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 981 treesize of output 941 [2022-12-13 19:08:44,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:08:44,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 941 treesize of output 861 [2022-12-13 19:08:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-13 19:08:45,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638469177] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:45,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:45,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2022-12-13 19:08:45,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254063019] [2022-12-13 19:08:45,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:45,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 19:08:45,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:45,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 19:08:45,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=562, Unknown=3, NotChecked=98, Total=756 [2022-12-13 19:08:45,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1397 [2022-12-13 19:08:46,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 281 transitions, 6509 flow. Second operand has 28 states, 28 states have (on average 417.2857142857143) internal successors, (11684), 28 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:46,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:08:46,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1397 [2022-12-13 19:08:46,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:08:56,730 INFO L130 PetriNetUnfolder]: 6371/11218 cut-off events. [2022-12-13 19:08:56,731 INFO L131 PetriNetUnfolder]: For 126066/126066 co-relation queries the response was YES. [2022-12-13 19:08:56,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110309 conditions, 11218 events. 6371/11218 cut-off events. For 126066/126066 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 88249 event pairs, 805 based on Foata normal form. 59/10904 useless extension candidates. Maximal degree in co-relation 110261. Up to 2605 conditions per place. [2022-12-13 19:08:56,813 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 648 selfloop transitions, 208 changer transitions 85/941 dead transitions. [2022-12-13 19:08:56,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 941 transitions, 17468 flow [2022-12-13 19:08:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 19:08:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-13 19:08:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 17821 transitions. [2022-12-13 19:08:56,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3037290793196305 [2022-12-13 19:08:56,825 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 17821 transitions. [2022-12-13 19:08:56,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 17821 transitions. [2022-12-13 19:08:56,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:08:56,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 17821 transitions. [2022-12-13 19:08:56,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 424.3095238095238) internal successors, (17821), 42 states have internal predecessors, (17821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:56,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 1397.0) internal successors, (60071), 43 states have internal predecessors, (60071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:56,864 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 1397.0) internal successors, (60071), 43 states have internal predecessors, (60071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:56,864 INFO L175 Difference]: Start difference. First operand has 283 places, 281 transitions, 6509 flow. Second operand 42 states and 17821 transitions. [2022-12-13 19:08:56,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 941 transitions, 17468 flow [2022-12-13 19:08:57,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 941 transitions, 17009 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-12-13 19:08:57,402 INFO L231 Difference]: Finished difference. Result has 311 places, 317 transitions, 7802 flow [2022-12-13 19:08:57,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6431, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=7802, PETRI_PLACES=311, PETRI_TRANSITIONS=317} [2022-12-13 19:08:57,402 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 239 predicate places. [2022-12-13 19:08:57,402 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 317 transitions, 7802 flow [2022-12-13 19:08:57,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 417.2857142857143) internal successors, (11684), 28 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:08:57,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:08:57,403 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:08:57,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-12-13 19:08:57,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:57,605 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:08:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash -951695329, now seen corresponding path program 2 times [2022-12-13 19:08:57,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:57,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354723113] [2022-12-13 19:08:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:58,079 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 19:08:58,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:58,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354723113] [2022-12-13 19:08:58,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354723113] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:58,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213587670] [2022-12-13 19:08:58,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:08:58,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:58,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:58,081 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:58,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-13 19:08:58,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:08:58,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:08:58,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 19:08:58,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:58,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:08:58,371 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 19:08:58,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:08:58,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:08:58,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:08:58,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:08:58,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:08:59,047 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-12-13 19:08:59,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 535 treesize of output 476 [2022-12-13 19:08:59,382 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 19:08:59,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:09:00,946 INFO L321 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2022-12-13 19:09:00,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 83 [2022-12-13 19:09:00,956 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:00,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 204 [2022-12-13 19:09:00,962 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:00,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 157 [2022-12-13 19:09:00,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:00,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 99 [2022-12-13 19:09:01,210 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 19:09:01,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213587670] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:09:01,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:09:01,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2022-12-13 19:09:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103309894] [2022-12-13 19:09:01,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:09:01,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 19:09:01,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:09:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 19:09:01,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=638, Unknown=25, NotChecked=0, Total=756 [2022-12-13 19:09:05,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 1397 [2022-12-13 19:09:05,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 317 transitions, 7802 flow. Second operand has 28 states, 28 states have (on average 422.25) internal successors, (11823), 28 states have internal predecessors, (11823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:05,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:09:05,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 1397 [2022-12-13 19:09:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:09:11,898 INFO L130 PetriNetUnfolder]: 6019/10581 cut-off events. [2022-12-13 19:09:11,898 INFO L131 PetriNetUnfolder]: For 131088/131088 co-relation queries the response was YES. [2022-12-13 19:09:11,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107339 conditions, 10581 events. 6019/10581 cut-off events. For 131088/131088 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 81937 event pairs, 1108 based on Foata normal form. 59/10275 useless extension candidates. Maximal degree in co-relation 107290. Up to 3948 conditions per place. [2022-12-13 19:09:11,978 INFO L137 encePairwiseOnDemand]: 1386/1397 looper letters, 552 selfloop transitions, 143 changer transitions 7/702 dead transitions. [2022-12-13 19:09:11,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 702 transitions, 14210 flow [2022-12-13 19:09:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:09:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 19:09:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7324 transitions. [2022-12-13 19:09:11,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.308391932291886 [2022-12-13 19:09:11,984 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7324 transitions. [2022-12-13 19:09:11,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7324 transitions. [2022-12-13 19:09:11,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:09:11,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7324 transitions. [2022-12-13 19:09:11,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 430.8235294117647) internal successors, (7324), 17 states have internal predecessors, (7324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:11,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1397.0) internal successors, (25146), 18 states have internal predecessors, (25146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:12,001 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1397.0) internal successors, (25146), 18 states have internal predecessors, (25146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:12,001 INFO L175 Difference]: Start difference. First operand has 311 places, 317 transitions, 7802 flow. Second operand 17 states and 7324 transitions. [2022-12-13 19:09:12,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 702 transitions, 14210 flow [2022-12-13 19:09:12,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 702 transitions, 13561 flow, removed 52 selfloop flow, removed 26 redundant places. [2022-12-13 19:09:12,456 INFO L231 Difference]: Finished difference. Result has 297 places, 314 transitions, 7333 flow [2022-12-13 19:09:12,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=7047, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7333, PETRI_PLACES=297, PETRI_TRANSITIONS=314} [2022-12-13 19:09:12,456 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 225 predicate places. [2022-12-13 19:09:12,456 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 314 transitions, 7333 flow [2022-12-13 19:09:12,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 422.25) internal successors, (11823), 28 states have internal predecessors, (11823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:12,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:09:12,458 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:09:12,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-12-13 19:09:12,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:09:12,659 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:09:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:09:12,660 INFO L85 PathProgramCache]: Analyzing trace with hash -951695382, now seen corresponding path program 3 times [2022-12-13 19:09:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:09:12,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420577641] [2022-12-13 19:09:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:09:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:09:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:13,051 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 19:09:13,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:09:13,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420577641] [2022-12-13 19:09:13,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420577641] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:09:13,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762585855] [2022-12-13 19:09:13,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:09:13,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:09:13,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:09:13,053 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:09:13,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 19:09:13,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:09:13,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:09:13,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 19:09:13,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:09:13,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 19:09:13,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:09:13,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:09:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:09:13,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:09:14,144 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 19:09:14,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:09:15,686 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse24 (* c_~i~0 4)) (.cse10 (<= 0 c_~bag1~0))) (let ((.cse4 (not (< (+ 2 c_~i~0) c_~N~0))) (.cse5 (not .cse10)) (.cse6 (< 4294967295 c_~bag1~0)) (.cse11 (not (<= 0 (+ c_~bag1~0 c_~sum1~0 2147483648)))) (.cse9 (< (+ 9223372039002259455 c_~bag1~0) 0)) (.cse8 (not (<= (+ c_~bag1~0 c_~sum1~0) 2147483647))) (.cse2 (+ c_~A~0.offset .cse24 8)) (.cse20 (+ c_~A~0.offset .cse24 4)) (.cse3 (+ c_~A~0.offset .cse24))) (and (or (forall ((v_ArrVal_1569 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (< 4294967295 .cse0) (< (select .cse1 .cse2) 4294967296) (not (<= 0 (+ c_~bag1~0 .cse0 2147483648))) (< (+ c_~bag1~0 c_~sum1~0 .cse0 2147483648) 0) (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse0)) (not (<= (+ c_~bag1~0 .cse0) 2147483647)) (not (<= 0 (+ 9223372039002259455 .cse0))))))) .cse4) (or .cse4 (let ((.cse7 (forall ((v_ArrVal_1569 (Array Int Int))) (let ((.cse16 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) c_~A~0.base))) (let ((.cse15 (select .cse16 .cse3))) (or (<= 0 .cse15) (< (select .cse16 .cse2) 4294967296) (not (<= 0 (+ c_~bag1~0 c_~sum1~0 .cse15 2147483648)))))))) (.cse12 (forall ((v_ArrVal_1569 (Array Int Int))) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) c_~A~0.base))) (let ((.cse14 (select .cse13 .cse3))) (or (< (select .cse13 .cse2) 4294967296) (not (<= (+ c_~bag1~0 c_~sum1~0 .cse14) 2147483647)) (not (<= 0 .cse14)))))))) (and (or .cse5 .cse6 .cse7 .cse8) (or .cse9 .cse10 .cse7 .cse8) (or .cse11 .cse5 .cse6 .cse12) (or .cse11 .cse12 .cse9 .cse10)))) (or .cse4 (forall ((v_ArrVal_1569 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) c_~A~0.base))) (let ((.cse19 (select .cse18 .cse20)) (.cse17 (select .cse18 .cse3))) (or (< 4294967295 .cse17) (< (select .cse18 .cse2) 4294967296) (not (<= 0 (+ c_~bag1~0 .cse17 2147483648))) (not (<= (+ c_~bag1~0 .cse19 .cse17) 2147483647)) (not (<= (+ c_~bag1~0 .cse17) 2147483647)) (not (<= 0 (+ c_~bag1~0 .cse19 .cse17 2147483648))) (not (<= 0 (+ 9223372039002259455 .cse17)))))))) (or .cse4 (and (or .cse11 .cse5 .cse6 .cse8) (or .cse11 .cse9 .cse10 .cse8)) (forall ((v_ArrVal_1569 (Array Int Int))) (let ((.cse21 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) c_~A~0.base))) (let ((.cse23 (select .cse21 .cse3)) (.cse22 (select .cse21 .cse20))) (or (< (select .cse21 .cse2) 4294967296) (not (<= 0 (+ .cse22 .cse23 2147483648))) (not (<= (+ .cse22 .cse23) 2147483647)) (not (<= 0 (+ 9223372039002259455 .cse22))) (< 4294967295 .cse22))))))))) is different from false [2022-12-13 19:09:16,103 WARN L837 $PredicateComparison]: unable to prove that (or (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (let ((.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (not (< 2 c_~N~0))) (.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse2 (select .cse3 .cse5)) (.cse1 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse1 .cse2 2147483648) 0) (< 2147483647 .cse1) (< 2147483647 (+ .cse1 .cse2)) (< (+ .cse1 2147483648) 0) (< (select .cse3 .cse4) 4294967296)))))) (or (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int))) (let ((.cse8 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (select .cse8 .cse5))) (or (not (<= 0 (+ 9223372039002259455 .cse6))) (not (<= (+ .cse7 .cse6) 2147483647)) (< 4294967295 .cse6) (< (select .cse8 .cse4) 4294967296) (not (<= 0 (+ .cse7 .cse6 2147483648))))))) .cse0) (or .cse0 (and (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ .cse9 2147483648))) (<= 0 .cse9) (< (select .cse10 .cse4) 4294967296))))) (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse11 (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 .cse11)) (not (<= .cse11 2147483647)) (< (select .cse12 .cse4) 4294967296))))))) (or .cse0 (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int))) (let ((.cse14 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse13 (select .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse13) (< (+ .cse13 2147483648) 0) (< (select .cse14 .cse4) 4294967296))))))))) is different from false [2022-12-13 19:09:16,144 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 633 treesize of output 370 [2022-12-13 19:09:16,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1645 treesize of output 1515 [2022-12-13 19:09:16,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1481 treesize of output 1465 [2022-12-13 19:09:16,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1465 treesize of output 1457 [2022-12-13 19:09:16,248 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1457 treesize of output 1441 [2022-12-13 19:09:16,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1441 treesize of output 1433 [2022-12-13 19:09:16,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1433 treesize of output 1393 [2022-12-13 19:09:16,327 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1393 treesize of output 1297 [2022-12-13 19:09:16,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1297 treesize of output 1281 [2022-12-13 19:09:16,380 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1281 treesize of output 1273 [2022-12-13 19:09:16,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1273 treesize of output 1225 [2022-12-13 19:09:16,433 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:16,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1225 treesize of output 1205 [2022-12-13 19:09:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-13 19:09:17,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762585855] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:09:17,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:09:17,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:09:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88045248] [2022-12-13 19:09:17,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:09:17,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:09:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:09:17,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:09:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=483, Unknown=2, NotChecked=90, Total=650 [2022-12-13 19:09:17,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 1397 [2022-12-13 19:09:17,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 314 transitions, 7333 flow. Second operand has 26 states, 26 states have (on average 493.38461538461536) internal successors, (12828), 26 states have internal predecessors, (12828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:17,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:09:17,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 1397 [2022-12-13 19:09:17,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:09:28,900 INFO L130 PetriNetUnfolder]: 6336/11115 cut-off events. [2022-12-13 19:09:28,900 INFO L131 PetriNetUnfolder]: For 166506/166506 co-relation queries the response was YES. [2022-12-13 19:09:28,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108471 conditions, 11115 events. 6336/11115 cut-off events. For 166506/166506 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 87373 event pairs, 1268 based on Foata normal form. 110/10711 useless extension candidates. Maximal degree in co-relation 108427. Up to 2609 conditions per place. [2022-12-13 19:09:29,021 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 548 selfloop transitions, 203 changer transitions 28/779 dead transitions. [2022-12-13 19:09:29,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 779 transitions, 14892 flow [2022-12-13 19:09:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 19:09:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 19:09:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 17018 transitions. [2022-12-13 19:09:29,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3582887700534759 [2022-12-13 19:09:29,031 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 17018 transitions. [2022-12-13 19:09:29,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 17018 transitions. [2022-12-13 19:09:29,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:09:29,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 17018 transitions. [2022-12-13 19:09:29,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 500.52941176470586) internal successors, (17018), 34 states have internal predecessors, (17018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:29,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 1397.0) internal successors, (48895), 35 states have internal predecessors, (48895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:29,064 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 1397.0) internal successors, (48895), 35 states have internal predecessors, (48895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:29,064 INFO L175 Difference]: Start difference. First operand has 297 places, 314 transitions, 7333 flow. Second operand 34 states and 17018 transitions. [2022-12-13 19:09:29,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 779 transitions, 14892 flow [2022-12-13 19:09:29,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 779 transitions, 14706 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-12-13 19:09:29,464 INFO L231 Difference]: Finished difference. Result has 320 places, 329 transitions, 8220 flow [2022-12-13 19:09:29,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=7104, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8220, PETRI_PLACES=320, PETRI_TRANSITIONS=329} [2022-12-13 19:09:29,464 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 248 predicate places. [2022-12-13 19:09:29,464 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 329 transitions, 8220 flow [2022-12-13 19:09:29,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 493.38461538461536) internal successors, (12828), 26 states have internal predecessors, (12828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:29,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:09:29,465 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:09:29,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-12-13 19:09:29,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:09:29,666 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:09:29,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:09:29,667 INFO L85 PathProgramCache]: Analyzing trace with hash -714588162, now seen corresponding path program 4 times [2022-12-13 19:09:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:09:29,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569649571] [2022-12-13 19:09:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:09:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:09:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:09:30,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:09:30,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569649571] [2022-12-13 19:09:30,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569649571] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:09:30,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705550391] [2022-12-13 19:09:30,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:09:30,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:09:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:09:30,124 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:09:30,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-13 19:09:30,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:09:30,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:09:30,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 19:09:30,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:09:30,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:09:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:09:30,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:09:31,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:09:31,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 90 [2022-12-13 19:09:31,210 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 19:09:31,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:09:33,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:33,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 254 treesize of output 147 [2022-12-13 19:09:33,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:33,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 461 treesize of output 419 [2022-12-13 19:09:33,123 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:33,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 385 treesize of output 357 [2022-12-13 19:09:33,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 357 treesize of output 341 [2022-12-13 19:09:33,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:33,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 341 treesize of output 329 [2022-12-13 19:09:33,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 313 [2022-12-13 19:09:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:09:33,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705550391] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:09:33,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:09:33,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:09:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814152829] [2022-12-13 19:09:33,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:09:33,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:09:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:09:33,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:09:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=532, Unknown=3, NotChecked=0, Total=650 [2022-12-13 19:09:35,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 1397 [2022-12-13 19:09:35,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 329 transitions, 8220 flow. Second operand has 26 states, 26 states have (on average 515.3846153846154) internal successors, (13400), 26 states have internal predecessors, (13400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:35,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:09:35,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 1397 [2022-12-13 19:09:35,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:09:42,602 INFO L130 PetriNetUnfolder]: 6267/10979 cut-off events. [2022-12-13 19:09:42,602 INFO L131 PetriNetUnfolder]: For 172372/172372 co-relation queries the response was YES. [2022-12-13 19:09:42,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110556 conditions, 10979 events. 6267/10979 cut-off events. For 172372/172372 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 85522 event pairs, 1477 based on Foata normal form. 130/10600 useless extension candidates. Maximal degree in co-relation 110507. Up to 3012 conditions per place. [2022-12-13 19:09:42,686 INFO L137 encePairwiseOnDemand]: 1385/1397 looper letters, 332 selfloop transitions, 158 changer transitions 7/497 dead transitions. [2022-12-13 19:09:42,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 497 transitions, 11301 flow [2022-12-13 19:09:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 19:09:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 19:09:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 10938 transitions. [2022-12-13 19:09:42,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3728397586665303 [2022-12-13 19:09:42,693 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 10938 transitions. [2022-12-13 19:09:42,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 10938 transitions. [2022-12-13 19:09:42,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:09:42,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 10938 transitions. [2022-12-13 19:09:42,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 520.8571428571429) internal successors, (10938), 21 states have internal predecessors, (10938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:42,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1397.0) internal successors, (30734), 22 states have internal predecessors, (30734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:42,713 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1397.0) internal successors, (30734), 22 states have internal predecessors, (30734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:42,713 INFO L175 Difference]: Start difference. First operand has 320 places, 329 transitions, 8220 flow. Second operand 21 states and 10938 transitions. [2022-12-13 19:09:42,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 497 transitions, 11301 flow [2022-12-13 19:09:43,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 497 transitions, 10705 flow, removed 14 selfloop flow, removed 30 redundant places. [2022-12-13 19:09:43,150 INFO L231 Difference]: Finished difference. Result has 309 places, 338 transitions, 8265 flow [2022-12-13 19:09:43,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=7453, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8265, PETRI_PLACES=309, PETRI_TRANSITIONS=338} [2022-12-13 19:09:43,151 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 237 predicate places. [2022-12-13 19:09:43,151 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 338 transitions, 8265 flow [2022-12-13 19:09:43,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 515.3846153846154) internal successors, (13400), 26 states have internal predecessors, (13400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:43,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:09:43,152 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:09:43,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-12-13 19:09:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:09:43,353 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:09:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:09:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash -721112985, now seen corresponding path program 2 times [2022-12-13 19:09:43,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:09:43,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028094663] [2022-12-13 19:09:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:09:43,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:09:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:43,809 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 19:09:43,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:09:43,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028094663] [2022-12-13 19:09:43,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028094663] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:09:43,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143774142] [2022-12-13 19:09:43,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:09:43,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:09:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:09:43,810 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:09:43,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-13 19:09:44,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:09:44,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:09:44,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 19:09:44,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:09:44,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:09:44,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:09:44,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:09:44,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:09:44,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:09:44,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2022-12-13 19:09:45,158 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 19:09:45,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:09:46,883 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1654 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1654))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse0) (forall ((v_ArrVal_1655 (Array Int Int))) (let ((.cse3 (select (store .cse6 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse3 .cse5)) (.cse2 (select .cse3 .cse4))) (or (< .cse1 0) (<= 0 (+ .cse2 .cse1 2147483648)) (< (+ 2147483647 .cse2 .cse0) 0))))) (< (+ .cse0 2147483648) 0))))) (forall ((v_ArrVal_1654 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1654))) (let ((.cse7 (select (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= .cse7 2147483647)) (forall ((v_ArrVal_1655 (Array Int Int))) (let ((.cse10 (select (store .cse11 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse8 (select .cse10 .cse4)) (.cse9 (select .cse10 .cse5))) (or (not (<= 0 (+ .cse8 .cse7 2147483648))) (< .cse9 0) (<= 0 (+ .cse8 .cse9 2147483648)))))))))))) is different from false [2022-12-13 19:09:46,921 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse8 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1654 (Array Int Int)) (v_ArrVal_1653 Int)) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_1653)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1654))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (forall ((v_ArrVal_1655 (Array Int Int))) (let ((.cse3 (select (store .cse6 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse3 .cse5)) (.cse1 (select .cse3 .cse4))) (or (<= 0 (+ .cse0 .cse1 2147483648)) (not (<= 0 (+ .cse0 .cse2 2147483648))) (< .cse1 0))))) (not (<= .cse2 2147483647)))))) (forall ((v_ArrVal_1654 (Array Int Int)) (v_ArrVal_1653 Int)) (let ((.cse13 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_1653)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1654))) (let ((.cse9 (select (select .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse9) (forall ((v_ArrVal_1655 (Array Int Int))) (let ((.cse12 (select (store .cse13 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse10 (select .cse12 .cse5)) (.cse11 (select .cse12 .cse4))) (or (<= 0 (+ .cse10 .cse11 2147483648)) (< (+ .cse10 .cse9 2147483647) 0) (< .cse11 0))))) (< (+ .cse9 2147483648) 0))))))) is different from false [2022-12-13 19:09:46,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:46,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 437 treesize of output 237 [2022-12-13 19:09:46,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 486 treesize of output 453 [2022-12-13 19:09:46,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 434 treesize of output 402 [2022-12-13 19:09:46,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 362 [2022-12-13 19:09:46,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:46,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 381 treesize of output 373 [2022-12-13 19:09:47,021 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:47,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1040 treesize of output 942 [2022-12-13 19:09:47,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:47,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 876 treesize of output 796 [2022-12-13 19:09:47,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:09:47,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 796 treesize of output 738 [2022-12-13 19:09:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-13 19:09:48,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143774142] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:09:48,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:09:48,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2022-12-13 19:09:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833187760] [2022-12-13 19:09:48,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:09:48,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 19:09:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:09:48,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 19:09:48,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=568, Unknown=3, NotChecked=98, Total=756 [2022-12-13 19:09:48,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1397 [2022-12-13 19:09:48,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 338 transitions, 8265 flow. Second operand has 28 states, 28 states have (on average 417.2857142857143) internal successors, (11684), 28 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:48,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:09:48,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1397 [2022-12-13 19:09:48,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:09:59,083 INFO L130 PetriNetUnfolder]: 6047/10578 cut-off events. [2022-12-13 19:09:59,083 INFO L131 PetriNetUnfolder]: For 147989/147989 co-relation queries the response was YES. [2022-12-13 19:09:59,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104634 conditions, 10578 events. 6047/10578 cut-off events. For 147989/147989 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 82048 event pairs, 799 based on Foata normal form. 84/10308 useless extension candidates. Maximal degree in co-relation 104590. Up to 2547 conditions per place. [2022-12-13 19:09:59,159 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 659 selfloop transitions, 214 changer transitions 35/908 dead transitions. [2022-12-13 19:09:59,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 908 transitions, 17131 flow [2022-12-13 19:09:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 19:09:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-13 19:09:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 16130 transitions. [2022-12-13 19:09:59,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.30384658855442115 [2022-12-13 19:09:59,171 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 16130 transitions. [2022-12-13 19:09:59,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 16130 transitions. [2022-12-13 19:09:59,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:09:59,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 16130 transitions. [2022-12-13 19:09:59,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 424.4736842105263) internal successors, (16130), 38 states have internal predecessors, (16130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:59,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 1397.0) internal successors, (54483), 39 states have internal predecessors, (54483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:59,211 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 1397.0) internal successors, (54483), 39 states have internal predecessors, (54483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:59,212 INFO L175 Difference]: Start difference. First operand has 309 places, 338 transitions, 8265 flow. Second operand 38 states and 16130 transitions. [2022-12-13 19:09:59,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 908 transitions, 17131 flow [2022-12-13 19:09:59,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 908 transitions, 17067 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-12-13 19:09:59,573 INFO L231 Difference]: Finished difference. Result has 339 places, 334 transitions, 8411 flow [2022-12-13 19:09:59,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=7901, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8411, PETRI_PLACES=339, PETRI_TRANSITIONS=334} [2022-12-13 19:09:59,573 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 267 predicate places. [2022-12-13 19:09:59,573 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 334 transitions, 8411 flow [2022-12-13 19:09:59,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 417.2857142857143) internal successors, (11684), 28 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:09:59,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:09:59,575 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:09:59,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-12-13 19:09:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-12-13 19:09:59,776 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:09:59,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:09:59,777 INFO L85 PathProgramCache]: Analyzing trace with hash -714828049, now seen corresponding path program 3 times [2022-12-13 19:09:59,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:09:59,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817245207] [2022-12-13 19:09:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:09:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:09:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:00,324 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 19:10:00,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:00,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817245207] [2022-12-13 19:10:00,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817245207] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:00,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385944498] [2022-12-13 19:10:00,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:10:00,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:00,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:00,325 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:00,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-12-13 19:10:00,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:10:00,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:10:00,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 19:10:00,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:00,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 19:10:00,668 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-13 19:10:00,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-12-13 19:10:00,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:10:00,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-12-13 19:10:01,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:10:01,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2022-12-13 19:10:01,692 INFO L321 Elim1Store]: treesize reduction 10, result has 69.7 percent of original size [2022-12-13 19:10:01,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 546 treesize of output 504 [2022-12-13 19:10:02,510 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 19:10:02,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:10:04,644 INFO L321 Elim1Store]: treesize reduction 20, result has 63.0 percent of original size [2022-12-13 19:10:04,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 214 treesize of output 114 [2022-12-13 19:10:04,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:04,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 269 treesize of output 241 [2022-12-13 19:10:04,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 102 [2022-12-13 19:10:04,679 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:04,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 129 [2022-12-13 19:10:05,100 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 19:10:05,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385944498] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:10:05,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:10:05,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2022-12-13 19:10:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244350864] [2022-12-13 19:10:05,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:10:05,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 19:10:05,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 19:10:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=641, Unknown=3, NotChecked=0, Total=756 [2022-12-13 19:10:13,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1397 [2022-12-13 19:10:13,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 334 transitions, 8411 flow. Second operand has 28 states, 28 states have (on average 413.2857142857143) internal successors, (11572), 28 states have internal predecessors, (11572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:13,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:13,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1397 [2022-12-13 19:10:13,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:23,298 INFO L130 PetriNetUnfolder]: 6017/10428 cut-off events. [2022-12-13 19:10:23,298 INFO L131 PetriNetUnfolder]: For 207413/207413 co-relation queries the response was YES. [2022-12-13 19:10:23,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106721 conditions, 10428 events. 6017/10428 cut-off events. For 207413/207413 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 78653 event pairs, 1385 based on Foata normal form. 351/10393 useless extension candidates. Maximal degree in co-relation 106676. Up to 3044 conditions per place. [2022-12-13 19:10:23,373 INFO L137 encePairwiseOnDemand]: 1385/1397 looper letters, 518 selfloop transitions, 148 changer transitions 21/687 dead transitions. [2022-12-13 19:10:23,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 687 transitions, 14422 flow [2022-12-13 19:10:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 19:10:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 19:10:23,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 11754 transitions. [2022-12-13 19:10:23,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3004908477349422 [2022-12-13 19:10:23,382 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 11754 transitions. [2022-12-13 19:10:23,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 11754 transitions. [2022-12-13 19:10:23,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:23,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 11754 transitions. [2022-12-13 19:10:23,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 419.7857142857143) internal successors, (11754), 28 states have internal predecessors, (11754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 1397.0) internal successors, (40513), 29 states have internal predecessors, (40513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,407 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 1397.0) internal successors, (40513), 29 states have internal predecessors, (40513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,407 INFO L175 Difference]: Start difference. First operand has 339 places, 334 transitions, 8411 flow. Second operand 28 states and 11754 transitions. [2022-12-13 19:10:23,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 687 transitions, 14422 flow [2022-12-13 19:10:23,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 687 transitions, 14071 flow, removed 19 selfloop flow, removed 25 redundant places. [2022-12-13 19:10:23,791 INFO L231 Difference]: Finished difference. Result has 341 places, 348 transitions, 8753 flow [2022-12-13 19:10:23,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=7555, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8753, PETRI_PLACES=341, PETRI_TRANSITIONS=348} [2022-12-13 19:10:23,791 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 269 predicate places. [2022-12-13 19:10:23,791 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 348 transitions, 8753 flow [2022-12-13 19:10:23,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 413.2857142857143) internal successors, (11572), 28 states have internal predecessors, (11572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:23,792 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1] [2022-12-13 19:10:23,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-12-13 19:10:23,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-12-13 19:10:23,994 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:10:23,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:23,994 INFO L85 PathProgramCache]: Analyzing trace with hash -677182103, now seen corresponding path program 3 times [2022-12-13 19:10:23,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:23,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751730920] [2022-12-13 19:10:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:23,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:24,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751730920] [2022-12-13 19:10:24,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751730920] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903596179] [2022-12-13 19:10:24,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:10:24,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:24,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:24,266 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:24,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-12-13 19:10:24,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 19:10:24,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:10:24,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 19:10:24,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:24,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 19:10:24,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:10:24,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 19:10:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:26,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:10:30,277 WARN L837 $PredicateComparison]: unable to prove that (or (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (let ((.cse14 (not (< 3 c_~N~0))) (.cse1 (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse10 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (<= c_~N~0 3))) (and (or (forall ((v_ArrVal_1736 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse3 (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse2 (select .cse0 .cse4))) (or (< 0 (+ (select .cse0 .cse1) 9223372039002259456)) (not (<= 0 (+ 9223372039002259455 .cse2))) (not (<= (+ .cse2 .cse3) 2147483647)) (not (<= 0 (+ .cse2 2147483648 .cse3))) (not (<= .cse2 4294967295)))))) .cse5) (or (forall ((v_ArrVal_1736 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse8 (select .cse7 .cse10)) (.cse9 (select .cse7 .cse4)) (.cse6 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ 2147483648 .cse6) 0) (< 0 (+ (select .cse7 .cse1) 9223372039002259456)) (< 2147483647 .cse6) (< 2147483647 (+ .cse8 .cse9 .cse6)) (not (<= (+ .cse9 .cse6) 2147483647)) (< (+ .cse8 .cse9 2147483648 .cse6) 0) (not (<= 0 (+ .cse9 2147483648 .cse6))))))) .cse5) (or (forall ((v_ArrVal_1736 (Array Int Int))) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse12 (select .cse13 .cse4)) (.cse11 (select .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ 2147483648 .cse11) 0) (< (+ .cse12 2147483648 .cse11) 0) (< 0 (+ (select .cse13 .cse1) 9223372039002259456)) (< 2147483647 .cse11) (< 2147483647 (+ .cse12 .cse11)))))) .cse14) (or (forall ((v_ArrVal_1736 (Array Int Int))) (let ((.cse17 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse16 (select .cse17 .cse4)) (.cse15 (select .cse17 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ 2147483648 .cse15))) (< (+ .cse16 2147483648 .cse15) 0) (< 0 (+ (select .cse17 .cse1) 9223372039002259456)) (not (<= .cse15 2147483647)) (< 2147483647 (+ .cse16 .cse15)))))) .cse14) (or .cse14 (forall ((v_ArrVal_1736 (Array Int Int))) (let ((.cse19 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse18 (select .cse19 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse21 (select .cse19 .cse4)) (.cse20 (select .cse19 .cse10))) (or (not (<= 0 (+ 2147483648 .cse18))) (< 0 (+ (select .cse19 .cse1) 9223372039002259456)) (not (<= .cse20 4294967295)) (not (<= .cse18 2147483647)) (not (<= (+ .cse20 .cse21) 2147483647)) (not (<= 0 (+ .cse20 .cse21 2147483648))) (not (<= 0 (+ 9223372039002259455 .cse20)))))))) (or .cse14 (forall ((v_ArrVal_1736 (Array Int Int))) (let ((.cse23 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse22 (select .cse23 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse25 (select .cse23 .cse4)) (.cse24 (select .cse23 .cse10))) (or (< (+ 2147483648 .cse22) 0) (< 0 (+ (select .cse23 .cse1) 9223372039002259456)) (< 2147483647 .cse22) (not (<= .cse24 4294967295)) (not (<= (+ .cse24 .cse25) 2147483647)) (not (<= 0 (+ .cse24 .cse25 2147483648))) (not (<= 0 (+ 9223372039002259455 .cse24)))))))) (or (forall ((v_ArrVal_1736 (Array Int Int))) (let ((.cse26 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse27 (select .cse26 .cse10)) (.cse29 (select .cse26 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse28 (select .cse26 .cse4))) (or (< 0 (+ (select .cse26 .cse1) 9223372039002259456)) (< 2147483647 (+ .cse27 .cse28 .cse29)) (not (<= 0 (+ 9223372039002259455 .cse28))) (not (<= (+ .cse28 .cse29) 2147483647)) (< (+ .cse27 .cse28 2147483648 .cse29) 0) (not (<= 0 (+ .cse28 2147483648 .cse29))) (not (<= .cse28 4294967295)))))) .cse5)))) is different from false [2022-12-13 19:10:30,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1582 treesize of output 815 [2022-12-13 19:10:30,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1474 treesize of output 1164 [2022-12-13 19:10:30,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1118 treesize of output 1086 [2022-12-13 19:10:30,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1086 treesize of output 1042 [2022-12-13 19:10:30,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1042 treesize of output 1018 [2022-12-13 19:10:30,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1018 treesize of output 998 [2022-12-13 19:10:30,497 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 998 treesize of output 958 [2022-12-13 19:10:30,520 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 958 treesize of output 938 [2022-12-13 19:10:30,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:30,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 938 treesize of output 906 [2022-12-13 19:10:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 19:10:31,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903596179] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:10:31,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:10:31,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:10:31,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359071243] [2022-12-13 19:10:31,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:10:31,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:10:31,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:31,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:10:31,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=467, Unknown=1, NotChecked=46, Total=650 [2022-12-13 19:10:31,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 1397 [2022-12-13 19:10:31,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 348 transitions, 8753 flow. Second operand has 26 states, 26 states have (on average 496.5) internal successors, (12909), 26 states have internal predecessors, (12909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:31,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:31,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 1397 [2022-12-13 19:10:31,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:37,726 INFO L130 PetriNetUnfolder]: 5053/8822 cut-off events. [2022-12-13 19:10:37,726 INFO L131 PetriNetUnfolder]: For 147629/147629 co-relation queries the response was YES. [2022-12-13 19:10:37,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90852 conditions, 8822 events. 5053/8822 cut-off events. For 147629/147629 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 64634 event pairs, 998 based on Foata normal form. 259/8695 useless extension candidates. Maximal degree in co-relation 90801. Up to 3044 conditions per place. [2022-12-13 19:10:37,786 INFO L137 encePairwiseOnDemand]: 1386/1397 looper letters, 160 selfloop transitions, 154 changer transitions 104/418 dead transitions. [2022-12-13 19:10:37,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 418 transitions, 9544 flow [2022-12-13 19:10:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 19:10:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 19:10:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 14498 transitions. [2022-12-13 19:10:37,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3578604398588108 [2022-12-13 19:10:37,795 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 14498 transitions. [2022-12-13 19:10:37,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 14498 transitions. [2022-12-13 19:10:37,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:37,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 14498 transitions. [2022-12-13 19:10:37,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 499.9310344827586) internal successors, (14498), 29 states have internal predecessors, (14498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:37,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 1397.0) internal successors, (41910), 30 states have internal predecessors, (41910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:37,827 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 1397.0) internal successors, (41910), 30 states have internal predecessors, (41910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:37,827 INFO L175 Difference]: Start difference. First operand has 341 places, 348 transitions, 8753 flow. Second operand 29 states and 14498 transitions. [2022-12-13 19:10:37,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 418 transitions, 9544 flow [2022-12-13 19:10:38,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 418 transitions, 9189 flow, removed 27 selfloop flow, removed 26 redundant places. [2022-12-13 19:10:38,177 INFO L231 Difference]: Finished difference. Result has 336 places, 250 transitions, 6683 flow [2022-12-13 19:10:38,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6741, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6683, PETRI_PLACES=336, PETRI_TRANSITIONS=250} [2022-12-13 19:10:38,177 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 264 predicate places. [2022-12-13 19:10:38,177 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 250 transitions, 6683 flow [2022-12-13 19:10:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 496.5) internal successors, (12909), 26 states have internal predecessors, (12909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:38,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:38,179 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:38,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-12-13 19:10:38,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-12-13 19:10:38,380 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:10:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1606578045, now seen corresponding path program 4 times [2022-12-13 19:10:38,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:38,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671210349] [2022-12-13 19:10:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:38,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:38,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671210349] [2022-12-13 19:10:38,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671210349] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:38,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549410939] [2022-12-13 19:10:38,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:10:38,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:38,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:38,939 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:38,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-12-13 19:10:39,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:10:39,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:10:39,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 19:10:39,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:39,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:10:39,328 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 19:10:39,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 19:10:39,369 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 19:10:39,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 19:10:39,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:10:39,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:10:39,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:10:39,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:10:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:39,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:10:42,041 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (* c_~j~0 4))) (let ((.cse2 (+ c_~A~0.offset 8 .cse12)) (.cse4 (+ c_~A~0.offset .cse12)) (.cse5 (+ c_~A~0.offset .cse12 4))) (and (forall ((v_ArrVal_1790 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) c_~A~0.base))) (let ((.cse3 (select .cse1 .cse5)) (.cse0 (select .cse1 .cse4))) (or (not (<= 0 (+ c_~bag2~0 .cse0 2147483648))) (< 0 (+ (select .cse1 .cse2) 9223372039002259456)) (not (<= (+ c_~bag2~0 .cse0) 2147483647)) (< (+ 9223372039002259455 .cse0) 0) (not (<= (+ c_~bag2~0 .cse3 .cse0) 2147483647)) (not (<= 0 (+ c_~bag2~0 .cse3 .cse0 2147483648))) (not (<= .cse0 4294967295)))))) (or (not (<= c_~bag2~0 4294967295)) (not (<= (+ c_~bag2~0 c_~sum2~0) 2147483647)) (not (<= 0 (+ c_~bag2~0 c_~sum2~0 2147483648))) (and (forall ((v_ArrVal_1790 (Array Int Int))) (let ((.cse8 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) c_~A~0.base))) (let ((.cse7 (select .cse8 .cse5)) (.cse6 (select .cse8 .cse4))) (or (not (<= 0 (+ c_~bag2~0 c_~sum2~0 .cse6 2147483648))) (not (<= 0 (+ c_~bag2~0 .cse6 2147483648))) (< 4294967295 .cse7) (< 0 (+ (select .cse8 .cse2) 9223372039002259456)) (< 2147483647 (+ .cse7 .cse6)) (< (+ .cse7 .cse6 2147483648) 0) (not (<= (+ c_~bag2~0 .cse6) 2147483647)) (not (<= (+ c_~bag2~0 c_~sum2~0 .cse6) 2147483647)))))) (forall ((v_ArrVal_1790 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) c_~A~0.base))) (let ((.cse9 (select .cse10 .cse5)) (.cse11 (select .cse10 .cse4))) (or (< c_~bag2~0 (+ .cse9 1)) (< 0 (+ (select .cse10 .cse2) 9223372039002259456)) (not (<= (+ c_~bag2~0 .cse11) 2147483647)) (not (<= 0 (+ .cse9 .cse11 2147483648))) (not (<= .cse11 4294967295))))))))))) is different from false [2022-12-13 19:10:42,182 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1790 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse2 .cse4)) (.cse0 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse0 2147483648) 0) (< 2147483647 .cse0) (< (+ .cse1 .cse0 2147483648) 0) (< 2147483647 (+ .cse1 .cse0)) (< 0 (+ (select .cse2 .cse3) 9223372039002259456)))))) (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1790 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse6 (select .cse7 .cse4)) (.cse5 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ .cse5 2147483648))) (not (<= .cse5 2147483647)) (< (+ .cse6 .cse5 2147483648) 0) (< 2147483647 (+ .cse6 .cse5)) (< 0 (+ (select .cse7 .cse3) 9223372039002259456)))))) (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1790 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse9 (select .cse10 .cse4))) (or (< 2147483647 .cse8) (< (+ .cse9 .cse8 2147483648) 0) (< 0 (+ (select .cse10 .cse3) 9223372039002259456)) (< 0 (+ .cse9 1)))))))) is different from false [2022-12-13 19:10:42,228 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse6 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1790 (Array Int Int)) (v_ArrVal_1788 Int)) (let ((.cse1 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse5 .cse6 v_ArrVal_1788)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse3 (select .cse1 .cse4)) (.cse0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ .cse0 2147483648))) (not (<= .cse0 2147483647)) (< 0 (+ (select .cse1 .cse2) 9223372039002259456)) (< 2147483647 (+ .cse3 .cse0)) (< (+ .cse3 .cse0 2147483648) 0))))) (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1790 (Array Int Int)) (v_ArrVal_1788 Int)) (let ((.cse7 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse5 .cse6 v_ArrVal_1788)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse7 .cse4)) (.cse8 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 0 (+ (select .cse7 .cse2) 9223372039002259456)) (< (+ .cse8 2147483648) 0) (< 2147483647 (+ .cse9 .cse8)) (< (+ .cse9 .cse8 2147483648) 0) (< 2147483647 .cse8))))) (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1790 (Array Int Int)) (v_ArrVal_1788 Int)) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse5 .cse6 v_ArrVal_1788)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse10 (select .cse11 .cse4)) (.cse12 (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 0 (+ .cse10 1)) (< 0 (+ (select .cse11 .cse2) 9223372039002259456)) (< (+ .cse10 .cse12 2147483648) 0) (< 2147483647 .cse12))))))) is different from false [2022-12-13 19:10:42,343 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse6 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse7 (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|))) (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221| Int)) (or (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1786 Int) (v_ArrVal_1790 (Array Int Int)) (v_ArrVal_1788 Int)) (let ((.cse2 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (store .cse5 .cse6 v_ArrVal_1786) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_1788)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (select .cse2 .cse4))) (or (< (+ .cse0 .cse1 2147483648) 0) (< 2147483647 .cse1) (< 0 (+ (select .cse2 .cse3) 9223372039002259456)) (< 0 (+ .cse0 1)))))) (not (<= .cse7 |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221|)))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221| Int)) (or (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1786 Int) (v_ArrVal_1790 (Array Int Int)) (v_ArrVal_1788 Int)) (let ((.cse10 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (store .cse5 .cse6 v_ArrVal_1786) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_1788)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse8 (select .cse10 .cse4)) (.cse9 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse8 .cse9 2147483648) 0) (not (<= .cse9 2147483647)) (not (<= 0 (+ .cse9 2147483648))) (< 2147483647 (+ .cse8 .cse9)) (< 0 (+ (select .cse10 .cse3) 9223372039002259456)))))) (not (<= .cse7 |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221|)))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221| Int)) (or (forall ((v_ArrVal_1789 (Array Int Int)) (v_ArrVal_1786 Int) (v_ArrVal_1790 (Array Int Int)) (v_ArrVal_1788 Int)) (let ((.cse13 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (store .cse5 .cse6 v_ArrVal_1786) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_1788)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1789) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1790) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse11 (select .cse13 .cse4)) (.cse12 (select .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse11 .cse12 2147483648) 0) (< 2147483647 .cse12) (< (+ .cse12 2147483648) 0) (< 2147483647 (+ .cse11 .cse12)) (< 0 (+ (select .cse13 .cse3) 9223372039002259456)))))) (not (<= .cse7 |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_221|)))))) is different from false [2022-12-13 19:10:42,536 INFO L321 Elim1Store]: treesize reduction 228, result has 41.7 percent of original size [2022-12-13 19:10:42,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 793 treesize of output 489 [2022-12-13 19:10:42,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 767 treesize of output 740 [2022-12-13 19:10:42,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 19:10:42,621 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:42,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1385 treesize of output 1361 [2022-12-13 19:10:42,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1274 treesize of output 1234 [2022-12-13 19:10:42,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1234 treesize of output 1154 [2022-12-13 19:10:42,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 19:10:42,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:42,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 1193 treesize of output 1225 [2022-12-13 19:10:42,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1138 treesize of output 1118 [2022-12-13 19:10:42,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1118 treesize of output 1086 [2022-12-13 19:10:42,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1086 treesize of output 1070 [2022-12-13 19:10:42,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1070 treesize of output 1030 [2022-12-13 19:10:42,983 INFO L321 Elim1Store]: treesize reduction 12, result has 83.6 percent of original size [2022-12-13 19:10:42,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1069 treesize of output 1097 [2022-12-13 19:10:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2022-12-13 19:10:44,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549410939] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:10:44,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:10:44,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-13 19:10:44,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383527935] [2022-12-13 19:10:44,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:10:44,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 19:10:44,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 19:10:44,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=685, Unknown=4, NotChecked=220, Total=992 [2022-12-13 19:10:44,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:10:44,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 250 transitions, 6683 flow. Second operand has 32 states, 32 states have (on average 497.21875) internal successors, (15911), 32 states have internal predecessors, (15911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:44,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:44,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:10:44,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:50,772 INFO L130 PetriNetUnfolder]: 4360/7503 cut-off events. [2022-12-13 19:10:50,772 INFO L131 PetriNetUnfolder]: For 246636/246636 co-relation queries the response was YES. [2022-12-13 19:10:50,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79160 conditions, 7503 events. 4360/7503 cut-off events. For 246636/246636 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 54589 event pairs, 166 based on Foata normal form. 178/7295 useless extension candidates. Maximal degree in co-relation 79113. Up to 1886 conditions per place. [2022-12-13 19:10:50,825 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 864 selfloop transitions, 40 changer transitions 60/964 dead transitions. [2022-12-13 19:10:50,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 964 transitions, 30309 flow [2022-12-13 19:10:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:10:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 19:10:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 8588 transitions. [2022-12-13 19:10:50,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3616152259042486 [2022-12-13 19:10:50,847 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 8588 transitions. [2022-12-13 19:10:50,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 8588 transitions. [2022-12-13 19:10:50,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:50,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 8588 transitions. [2022-12-13 19:10:50,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 505.1764705882353) internal successors, (8588), 17 states have internal predecessors, (8588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:50,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1397.0) internal successors, (25146), 18 states have internal predecessors, (25146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:50,862 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1397.0) internal successors, (25146), 18 states have internal predecessors, (25146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:50,862 INFO L175 Difference]: Start difference. First operand has 336 places, 250 transitions, 6683 flow. Second operand 17 states and 8588 transitions. [2022-12-13 19:10:50,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 964 transitions, 30309 flow [2022-12-13 19:10:51,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 964 transitions, 28991 flow, removed 26 selfloop flow, removed 17 redundant places. [2022-12-13 19:10:51,090 INFO L231 Difference]: Finished difference. Result has 278 places, 248 transitions, 6507 flow [2022-12-13 19:10:51,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6507, PETRI_PLACES=278, PETRI_TRANSITIONS=248} [2022-12-13 19:10:51,090 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 206 predicate places. [2022-12-13 19:10:51,090 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 248 transitions, 6507 flow [2022-12-13 19:10:51,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 497.21875) internal successors, (15911), 32 states have internal predecessors, (15911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:51,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:51,092 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:10:51,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-12-13 19:10:51,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-12-13 19:10:51,293 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:10:51,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash -419769942, now seen corresponding path program 5 times [2022-12-13 19:10:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154169965] [2022-12-13 19:10:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:52,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:52,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154169965] [2022-12-13 19:10:52,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154169965] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:52,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298178251] [2022-12-13 19:10:52,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 19:10:52,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:52,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:52,169 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:52,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-12-13 19:10:52,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 19:10:52,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:10:52,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 19:10:52,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:52,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:10:52,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:10:52,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:10:52,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:10:52,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:10:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:10:52,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2022-12-13 19:10:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:53,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:10:54,836 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1838 (Array Int Int)) (v_ArrVal_1837 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1837))) (let ((.cse2 (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse2 .cse5)) (.cse1 (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= .cse0 4294967295)) (not (<= 0 (+ 9223372039002259455 .cse0))) (not (<= 0 (+ .cse0 .cse1 2147483648))) (not (<= (+ .cse0 .cse1) 2147483647)) (< (select .cse2 .cse3) 4294967296)))))) (forall ((v_ArrVal_1837 (Array Int Int))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1837))) (let ((.cse7 (select (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (forall ((v_ArrVal_1838 (Array Int Int))) (let ((.cse8 (select (store .cse9 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse6 (select .cse8 .cse5))) (or (not (<= 0 (+ .cse6 .cse7 2147483648))) (not (<= (+ .cse6 .cse7) 2147483647)) (< (select .cse8 .cse3) 4294967296))))) (< (+ .cse7 2147483648) 0) (< 2147483647 .cse7))))) (forall ((v_ArrVal_1837 (Array Int Int))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1837))) (let ((.cse11 (select (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (forall ((v_ArrVal_1838 (Array Int Int))) (< (select (select (store .cse10 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse3) 4294967296)) (< (+ .cse11 2147483648) 0) (< 2147483647 .cse11))))) (forall ((v_ArrVal_1837 (Array Int Int))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1837))) (let ((.cse13 (select (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (forall ((v_ArrVal_1838 (Array Int Int))) (< (select (select (store .cse12 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse3) 4294967296)) (not (<= .cse13 2147483647)) (not (<= 0 (+ .cse13 2147483648))))))))) is different from false [2022-12-13 19:10:54,903 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse7 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1835 Int) (v_ArrVal_1837 (Array Int Int))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_1835)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1837))) (let ((.cse0 (select (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse0) (forall ((v_ArrVal_1838 (Array Int Int))) (let ((.cse2 (select (store .cse5 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse2 .cse4))) (or (not (<= 0 (+ .cse1 .cse0 2147483648))) (not (<= (+ .cse1 .cse0) 2147483647)) (< (select .cse2 .cse3) 4294967296))))) (< (+ .cse0 2147483648) 0))))) (forall ((v_ArrVal_1835 Int) (v_ArrVal_1837 (Array Int Int))) (let ((.cse9 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_1835)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1837))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ .cse8 2147483648))) (not (<= .cse8 2147483647)) (forall ((v_ArrVal_1838 (Array Int Int))) (< (select (select (store .cse9 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse3) 4294967296)))))) (forall ((v_ArrVal_1835 Int) (v_ArrVal_1837 (Array Int Int))) (let ((.cse11 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_1835)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1837))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse10) (< (+ .cse10 2147483648) 0) (forall ((v_ArrVal_1838 (Array Int Int))) (< (select (select (store .cse11 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse3) 4294967296)))))) (forall ((v_ArrVal_1838 (Array Int Int)) (v_ArrVal_1835 Int) (v_ArrVal_1837 (Array Int Int))) (let ((.cse15 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_1835)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1837))) (let ((.cse14 (select (store .cse15 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse12 (select .cse14 .cse4)) (.cse13 (select (select .cse15 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= 0 (+ .cse12 .cse13 2147483648))) (not (<= .cse12 4294967295)) (not (<= 0 (+ 9223372039002259455 .cse12))) (not (<= (+ .cse12 .cse13) 2147483647)) (< (select .cse14 .cse3) 4294967296)))))))) is different from false [2022-12-13 19:10:55,013 INFO L321 Elim1Store]: treesize reduction 116, result has 45.5 percent of original size [2022-12-13 19:10:55,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 649 treesize of output 420 [2022-12-13 19:10:55,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1488 treesize of output 1411 [2022-12-13 19:10:55,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:55,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1357 treesize of output 1363 [2022-12-13 19:10:55,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1332 treesize of output 1324 [2022-12-13 19:10:55,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1324 treesize of output 1316 [2022-12-13 19:10:55,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:55,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1850 treesize of output 1802 [2022-12-13 19:10:55,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1761 treesize of output 1721 [2022-12-13 19:10:55,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1721 treesize of output 1681 [2022-12-13 19:10:55,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1681 treesize of output 1669 [2022-12-13 19:10:55,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:55,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1686 treesize of output 1688 [2022-12-13 19:10:55,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1657 treesize of output 1641 [2022-12-13 19:10:55,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1641 treesize of output 1529 [2022-12-13 19:10:55,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1529 treesize of output 1441 [2022-12-13 19:10:55,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:10:55,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1563 treesize of output 1457 [2022-12-13 19:10:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-13 19:10:56,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298178251] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:10:56,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:10:56,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 19:10:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994313684] [2022-12-13 19:10:56,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:10:56,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 19:10:56,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 19:10:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=624, Unknown=4, NotChecked=102, Total=812 [2022-12-13 19:10:57,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 1397 [2022-12-13 19:10:57,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 248 transitions, 6507 flow. Second operand has 29 states, 29 states have (on average 498.3448275862069) internal successors, (14452), 29 states have internal predecessors, (14452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:57,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:57,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 1397 [2022-12-13 19:10:57,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:11:01,714 INFO L130 PetriNetUnfolder]: 4199/7229 cut-off events. [2022-12-13 19:11:01,714 INFO L131 PetriNetUnfolder]: For 139500/139500 co-relation queries the response was YES. [2022-12-13 19:11:01,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76309 conditions, 7229 events. 4199/7229 cut-off events. For 139500/139500 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 51406 event pairs, 871 based on Foata normal form. 113/6968 useless extension candidates. Maximal degree in co-relation 76264. Up to 2489 conditions per place. [2022-12-13 19:11:01,783 INFO L137 encePairwiseOnDemand]: 1386/1397 looper letters, 334 selfloop transitions, 109 changer transitions 7/450 dead transitions. [2022-12-13 19:11:01,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 450 transitions, 10369 flow [2022-12-13 19:11:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:11:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 19:11:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 7086 transitions. [2022-12-13 19:11:01,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3623069843542284 [2022-12-13 19:11:01,791 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 7086 transitions. [2022-12-13 19:11:01,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 7086 transitions. [2022-12-13 19:11:01,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:11:01,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 7086 transitions. [2022-12-13 19:11:01,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 506.14285714285717) internal successors, (7086), 14 states have internal predecessors, (7086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:01,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1397.0) internal successors, (20955), 15 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:01,812 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1397.0) internal successors, (20955), 15 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:01,812 INFO L175 Difference]: Start difference. First operand has 278 places, 248 transitions, 6507 flow. Second operand 14 states and 7086 transitions. [2022-12-13 19:11:01,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 450 transitions, 10369 flow [2022-12-13 19:11:02,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 450 transitions, 10077 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-13 19:11:02,079 INFO L231 Difference]: Finished difference. Result has 283 places, 246 transitions, 6682 flow [2022-12-13 19:11:02,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6361, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6682, PETRI_PLACES=283, PETRI_TRANSITIONS=246} [2022-12-13 19:11:02,079 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 211 predicate places. [2022-12-13 19:11:02,079 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 246 transitions, 6682 flow [2022-12-13 19:11:02,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 498.3448275862069) internal successors, (14452), 29 states have internal predecessors, (14452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:02,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:11:02,081 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:11:02,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-12-13 19:11:02,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-12-13 19:11:02,282 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:11:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:11:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash -426054829, now seen corresponding path program 4 times [2022-12-13 19:11:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:11:02,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484405492] [2022-12-13 19:11:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:11:02,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:11:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:11:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:11:03,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:11:03,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484405492] [2022-12-13 19:11:03,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484405492] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:11:03,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935037199] [2022-12-13 19:11:03,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:11:03,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:11:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:11:03,294 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:11:03,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-12-13 19:11:03,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:11:03,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:11:03,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 19:11:03,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:11:03,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:11:03,634 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 19:11:03,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:11:03,677 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 19:11:03,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-12-13 19:11:03,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:11:03,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 19:11:04,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:11:04,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-12-13 19:11:04,473 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-12-13 19:11:04,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 548 treesize of output 489 [2022-12-13 19:11:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:11:05,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:11:06,781 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1888 (Array Int Int)) (|ULTIMATE.start_create_fresh_int_array_~i~1#1| Int) (v_ArrVal_1887 (Array Int Int)) (v_ArrVal_1886 Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |ULTIMATE.start_create_fresh_int_array_~i~1#1| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_1886)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1887))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1888) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (< (+ .cse0 2147483648) 0) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (< 2147483647 (+ .cse1 .cse0)) (< .cse1 2147483648))))) (not (< 2 c_~N~0))) is different from false [2022-12-13 19:11:06,964 INFO L321 Elim1Store]: treesize reduction 76, result has 42.0 percent of original size [2022-12-13 19:11:06,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 106 [2022-12-13 19:11:07,014 INFO L321 Elim1Store]: treesize reduction 12, result has 77.4 percent of original size [2022-12-13 19:11:07,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 546 treesize of output 498 [2022-12-13 19:11:07,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 364 treesize of output 322 [2022-12-13 19:11:07,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 371 treesize of output 323 [2022-12-13 19:11:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-13 19:11:07,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935037199] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:11:07,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:11:07,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-13 19:11:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062391578] [2022-12-13 19:11:07,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:11:07,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 19:11:07,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:11:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 19:11:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=812, Unknown=13, NotChecked=58, Total=992 [2022-12-13 19:11:08,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1397 [2022-12-13 19:11:08,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 246 transitions, 6682 flow. Second operand has 32 states, 32 states have (on average 413.21875) internal successors, (13223), 32 states have internal predecessors, (13223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:08,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:11:08,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1397 [2022-12-13 19:11:08,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:11:16,335 INFO L130 PetriNetUnfolder]: 4020/6941 cut-off events. [2022-12-13 19:11:16,335 INFO L131 PetriNetUnfolder]: For 140720/140720 co-relation queries the response was YES. [2022-12-13 19:11:16,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73701 conditions, 6941 events. 4020/6941 cut-off events. For 140720/140720 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 49174 event pairs, 687 based on Foata normal form. 113/6696 useless extension candidates. Maximal degree in co-relation 73655. Up to 1812 conditions per place. [2022-12-13 19:11:16,383 INFO L137 encePairwiseOnDemand]: 1385/1397 looper letters, 442 selfloop transitions, 136 changer transitions 35/613 dead transitions. [2022-12-13 19:11:16,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 613 transitions, 12736 flow [2022-12-13 19:11:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 19:11:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 19:11:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 9691 transitions. [2022-12-13 19:11:16,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.30160903800068467 [2022-12-13 19:11:16,391 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 9691 transitions. [2022-12-13 19:11:16,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 9691 transitions. [2022-12-13 19:11:16,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:11:16,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 9691 transitions. [2022-12-13 19:11:16,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 421.3478260869565) internal successors, (9691), 23 states have internal predecessors, (9691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:16,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 1397.0) internal successors, (33528), 24 states have internal predecessors, (33528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:16,413 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 1397.0) internal successors, (33528), 24 states have internal predecessors, (33528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:16,413 INFO L175 Difference]: Start difference. First operand has 283 places, 246 transitions, 6682 flow. Second operand 23 states and 9691 transitions. [2022-12-13 19:11:16,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 613 transitions, 12736 flow [2022-12-13 19:11:16,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 613 transitions, 12577 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-12-13 19:11:16,630 INFO L231 Difference]: Finished difference. Result has 297 places, 249 transitions, 6878 flow [2022-12-13 19:11:16,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6362, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6878, PETRI_PLACES=297, PETRI_TRANSITIONS=249} [2022-12-13 19:11:16,630 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 225 predicate places. [2022-12-13 19:11:16,630 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 249 transitions, 6878 flow [2022-12-13 19:11:16,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 413.21875) internal successors, (13223), 32 states have internal predecessors, (13223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:16,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:11:16,631 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:11:16,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-12-13 19:11:16,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:11:16,833 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:11:16,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:11:16,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1178826334, now seen corresponding path program 4 times [2022-12-13 19:11:16,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:11:16,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204441674] [2022-12-13 19:11:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:11:16,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:11:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:11:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:11:17,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:11:17,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204441674] [2022-12-13 19:11:17,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204441674] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:11:17,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777372252] [2022-12-13 19:11:17,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:11:17,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:11:17,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:11:17,386 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:11:17,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-13 19:11:17,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:11:17,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:11:17,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 19:11:17,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:11:17,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:11:17,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:11:17,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:11:17,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:11:17,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 19:11:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:11:19,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:11:26,223 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse3 .cse6)) (.cse0 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse2 (select .cse3 .cse5))) (or (not (<= 0 (+ .cse0 .cse1 .cse2 2147483648))) (not (<= .cse0 2147483647)) (< 0 (+ .cse1 .cse2 1)) (< 0 (+ .cse2 1)) (< (select .cse3 .cse4) 4294967296) (not (<= 0 (+ .cse0 .cse2 2147483648))))))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (select .cse10 .cse6)) (.cse9 (select .cse10 .cse5))) (or (< 2147483647 .cse7) (< (+ .cse7 .cse8 .cse9 2147483648) 0) (< (+ .cse7 .cse9 2147483648) 0) (< 2147483647 (+ .cse7 .cse8 .cse9)) (< 0 (+ .cse9 1)) (< (select .cse10 .cse4) 4294967296))))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse14 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse11 (select .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse12 (select .cse14 .cse6)) (.cse13 (select .cse14 .cse5))) (or (< (+ .cse11 2147483648) 0) (< 2147483647 .cse11) (< (+ .cse11 .cse12 .cse13 2147483648) 0) (< 2147483647 (+ .cse11 .cse13)) (< (+ .cse11 .cse13 2147483648) 0) (< 2147483647 (+ .cse11 .cse12 .cse13)) (< (select .cse14 .cse4) 4294967296))))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse18 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse15 (select .cse18 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse17 (select .cse18 .cse6)) (.cse16 (select .cse18 .cse5))) (or (< 2147483647 .cse15) (< .cse15 0) (< 2147483647 (+ .cse15 .cse16)) (< (+ .cse15 .cse16 2147483648) 0) (< 2147483647 (+ .cse17 .cse16)) (< 4294967295 .cse17) (< (+ .cse17 .cse16 2147483648) 0) (< (select .cse18 .cse4) 4294967296))))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse22 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse20 (select .cse22 .cse6)) (.cse21 (select .cse22 .cse5)) (.cse19 (select .cse22 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse19 (+ .cse20 .cse21 1)) (< .cse19 (+ .cse20 1)) (< 2147483647 (+ .cse19 .cse21)) (< (+ .cse20 .cse21 2147483648) 0) (< (select .cse22 .cse4) 4294967296) (<= 0 .cse19))))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse26 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse23 (select .cse26 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse24 (select .cse26 .cse6)) (.cse25 (select .cse26 .cse5))) (or (< (+ .cse23 2147483648) 0) (< .cse23 (+ .cse24 1)) (< .cse25 1) (< 2147483647 (+ .cse23 .cse25)) (< (+ .cse24 .cse25 2147483648) 0) (< (select .cse26 .cse4) 4294967296))))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse30 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse27 (select .cse30 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse29 (select .cse30 .cse6)) (.cse28 (select .cse30 .cse5))) (or (< (+ .cse27 2147483648) 0) (< .cse28 1) (< 2147483647 (+ .cse27 .cse28)) (< 2147483647 (+ .cse29 .cse28)) (< (+ .cse29 .cse28 2147483648) 0) (< (select .cse30 .cse4) 4294967296))))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse34 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse31 (select .cse34 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse32 (select .cse34 .cse6)) (.cse33 (select .cse34 .cse5))) (or (< 2147483647 .cse31) (< .cse31 (+ .cse32 .cse33 1)) (< .cse31 (+ .cse32 1)) (< .cse31 0) (< 2147483647 (+ .cse31 .cse33)) (< (+ .cse32 .cse33 2147483648) 0) (< (select .cse34 .cse4) 4294967296))))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1933 (Array Int Int))) (let ((.cse38 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1933) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1934) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse37 (select .cse38 .cse6)) (.cse36 (select .cse38 .cse5)) (.cse35 (select .cse38 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse35 2147483648) 0) (< 2147483647 (+ .cse35 .cse36)) (< (+ .cse35 .cse36 2147483648) 0) (< 2147483647 (+ .cse37 .cse36)) (< (+ .cse37 .cse36 2147483648) 0) (< (select .cse38 .cse4) 4294967296) (<= 0 .cse35))))))) is different from false [2022-12-13 19:11:26,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:26,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 2570 treesize of output 1407 [2022-12-13 19:11:26,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:26,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 7050 treesize of output 6282 [2022-12-13 19:11:26,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:26,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6238 treesize of output 6158 [2022-12-13 19:11:26,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:26,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6158 treesize of output 6118 [2022-12-13 19:11:26,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:26,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6118 treesize of output 6038 [2022-12-13 19:11:26,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:26,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6038 treesize of output 5966 [2022-12-13 19:11:26,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:26,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5966 treesize of output 5822 [2022-12-13 19:11:26,933 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:26,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5822 treesize of output 5750 [2022-12-13 19:11:27,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5750 treesize of output 5674 [2022-12-13 19:11:27,117 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5674 treesize of output 5522 [2022-12-13 19:11:27,221 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5522 treesize of output 5462 [2022-12-13 19:11:27,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5462 treesize of output 5342 [2022-12-13 19:11:27,400 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5342 treesize of output 5306 [2022-12-13 19:11:27,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5306 treesize of output 5242 [2022-12-13 19:11:27,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5242 treesize of output 5114 [2022-12-13 19:11:27,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5114 treesize of output 5042 [2022-12-13 19:11:27,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5042 treesize of output 5006 [2022-12-13 19:11:27,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5006 treesize of output 4846 [2022-12-13 19:11:27,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:27,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4846 treesize of output 4778 [2022-12-13 19:11:28,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:28,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4778 treesize of output 4744 [2022-12-13 19:11:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-13 19:11:32,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777372252] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:11:32,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:11:32,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-13 19:11:32,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697701174] [2022-12-13 19:11:32,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:11:32,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 19:11:32,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:11:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 19:11:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=846, Unknown=5, NotChecked=58, Total=992 [2022-12-13 19:11:33,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:11:33,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 249 transitions, 6878 flow. Second operand has 32 states, 32 states have (on average 497.21875) internal successors, (15911), 32 states have internal predecessors, (15911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:33,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:11:33,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:11:33,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:11:46,966 INFO L130 PetriNetUnfolder]: 5164/8937 cut-off events. [2022-12-13 19:11:46,966 INFO L131 PetriNetUnfolder]: For 313267/313267 co-relation queries the response was YES. [2022-12-13 19:11:47,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98854 conditions, 8937 events. 5164/8937 cut-off events. For 313267/313267 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 66420 event pairs, 146 based on Foata normal form. 130/8539 useless extension candidates. Maximal degree in co-relation 98804. Up to 2234 conditions per place. [2022-12-13 19:11:47,058 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 1041 selfloop transitions, 52 changer transitions 75/1168 dead transitions. [2022-12-13 19:11:47,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1168 transitions, 37339 flow [2022-12-13 19:11:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 19:11:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 19:11:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 10118 transitions. [2022-12-13 19:11:47,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3621331424481031 [2022-12-13 19:11:47,064 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 10118 transitions. [2022-12-13 19:11:47,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 10118 transitions. [2022-12-13 19:11:47,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:11:47,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 10118 transitions. [2022-12-13 19:11:47,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 505.9) internal successors, (10118), 20 states have internal predecessors, (10118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:47,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1397.0) internal successors, (29337), 21 states have internal predecessors, (29337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:47,082 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1397.0) internal successors, (29337), 21 states have internal predecessors, (29337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:47,082 INFO L175 Difference]: Start difference. First operand has 297 places, 249 transitions, 6878 flow. Second operand 20 states and 10118 transitions. [2022-12-13 19:11:47,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1168 transitions, 37339 flow [2022-12-13 19:11:47,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 1168 transitions, 36287 flow, removed 101 selfloop flow, removed 15 redundant places. [2022-12-13 19:11:47,318 INFO L231 Difference]: Finished difference. Result has 302 places, 260 transitions, 7002 flow [2022-12-13 19:11:47,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6674, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7002, PETRI_PLACES=302, PETRI_TRANSITIONS=260} [2022-12-13 19:11:47,319 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 230 predicate places. [2022-12-13 19:11:47,319 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 260 transitions, 7002 flow [2022-12-13 19:11:47,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 497.21875) internal successors, (15911), 32 states have internal predecessors, (15911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:47,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:11:47,320 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:11:47,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-12-13 19:11:47,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:11:47,521 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:11:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:11:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1178826302, now seen corresponding path program 5 times [2022-12-13 19:11:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:11:47,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206928546] [2022-12-13 19:11:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:11:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:11:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:11:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:11:48,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:11:48,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206928546] [2022-12-13 19:11:48,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206928546] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:11:48,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333788702] [2022-12-13 19:11:48,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 19:11:48,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:11:48,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:11:48,046 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:11:48,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-13 19:11:48,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 19:11:48,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:11:48,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 19:11:48,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:11:48,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:11:48,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:11:48,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:11:48,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:11:48,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:11:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:11:50,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:11:56,419 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1979) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1980) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (select .cse3 .cse6)) (.cse2 (select .cse3 .cse5))) (or (not (<= 0 (+ .cse0 .cse1 .cse2 2147483648))) (not (<= 0 (+ .cse0 .cse1 2147483648))) (< 0 (+ .cse0 1)) (< 0 (+ (select .cse3 .cse4) 9223372039002259456)) (not (<= .cse1 2147483647)) (< 0 (+ .cse0 .cse2 1)))))) (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse9 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1979) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1980) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse9 .cse6)) (.cse10 (select .cse9 .cse5)) (.cse8 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= (+ .cse7 .cse8) 2147483647)) (not (<= 0 (+ .cse7 .cse8 2147483648))) (< 0 (+ (select .cse9 .cse4) 9223372039002259456)) (< 4294967295 .cse10) (< (+ .cse7 .cse10 2147483648) 0) (not (<= .cse8 2147483647)) (< 2147483647 (+ .cse7 .cse10)) (not (<= 0 (+ .cse8 2147483648))))))) (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse14 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1979) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1980) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse11 (select .cse14 .cse6)) (.cse13 (select .cse14 .cse5)) (.cse12 (select .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= (+ .cse11 .cse12) 2147483647)) (< .cse12 (+ .cse13 1)) (< .cse12 (+ .cse11 .cse13 1)) (not (<= 0 (+ .cse11 .cse13 2147483648))) (< 0 (+ (select .cse14 .cse4) 9223372039002259456)) (not (<= .cse12 2147483647)))))) (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse18 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1979) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1980) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse15 (select .cse18 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse16 (select .cse18 .cse5)) (.cse17 (select .cse18 .cse6))) (or (< .cse15 (+ .cse16 1)) (< (+ .cse15 2147483648) 0) (< 2147483647 (+ .cse17 .cse15)) (< 0 (+ (select .cse18 .cse4) 9223372039002259456)) (< (+ .cse17 .cse16 2147483648) 0) (< .cse17 1))))) (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse22 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1979) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1980) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse19 (select .cse22 .cse6)) (.cse20 (select .cse22 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse21 (select .cse22 .cse5))) (or (< (+ .cse19 .cse20 2147483648) 0) (< (+ .cse19 .cse20 .cse21 2147483648) 0) (< 2147483647 .cse20) (< 0 (+ .cse19 1)) (< 0 (+ (select .cse22 .cse4) 9223372039002259456)) (< 2147483647 (+ .cse19 .cse20 .cse21)))))) (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse25 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1979) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1980) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse23 (select .cse25 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse24 (select .cse25 .cse6)) (.cse26 (select .cse25 .cse5))) (or (< (+ .cse23 2147483648) 0) (< 2147483647 (+ .cse24 .cse23)) (< 0 (+ (select .cse25 .cse4) 9223372039002259456)) (< (+ .cse24 .cse26 2147483648) 0) (< .cse24 1) (< 2147483647 (+ .cse24 .cse26)))))) (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse30 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1979) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1980) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse27 (select .cse30 .cse6)) (.cse28 (select .cse30 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse29 (select .cse30 .cse5))) (or (< (+ .cse27 .cse28 2147483648) 0) (< (+ .cse27 .cse28 .cse29 2147483648) 0) (< (+ .cse28 2147483648) 0) (< 2147483647 .cse28) (< 2147483647 (+ .cse27 .cse28)) (< 0 (+ (select .cse30 .cse4) 9223372039002259456)) (< 2147483647 (+ .cse27 .cse28 .cse29)))))))) is different from false [2022-12-13 19:11:56,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1993 treesize of output 1106 [2022-12-13 19:11:56,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 4423 treesize of output 3959 [2022-12-13 19:11:56,600 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3913 treesize of output 3841 [2022-12-13 19:11:56,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3841 treesize of output 3805 [2022-12-13 19:11:56,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3805 treesize of output 3733 [2022-12-13 19:11:56,763 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3733 treesize of output 3665 [2022-12-13 19:11:56,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3665 treesize of output 3631 [2022-12-13 19:11:56,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3631 treesize of output 3567 [2022-12-13 19:11:56,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3567 treesize of output 3439 [2022-12-13 19:11:56,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:56,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3439 treesize of output 3379 [2022-12-13 19:11:57,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:57,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3379 treesize of output 3259 [2022-12-13 19:11:57,104 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:57,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3259 treesize of output 3179 [2022-12-13 19:11:57,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:57,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3179 treesize of output 3099 [2022-12-13 19:11:57,213 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:57,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3099 treesize of output 3059 [2022-12-13 19:11:57,268 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:57,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3059 treesize of output 3023 [2022-12-13 19:11:57,336 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:11:57,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3023 treesize of output 2983 [2022-12-13 19:11:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-13 19:11:59,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333788702] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:11:59,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:11:59,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-13 19:11:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941153250] [2022-12-13 19:11:59,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:11:59,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 19:11:59,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:11:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 19:11:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=843, Unknown=8, NotChecked=58, Total=992 [2022-12-13 19:11:59,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:11:59,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 260 transitions, 7002 flow. Second operand has 32 states, 32 states have (on average 497.21875) internal successors, (15911), 32 states have internal predecessors, (15911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:59,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:11:59,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:11:59,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:12:11,435 INFO L130 PetriNetUnfolder]: 4953/8532 cut-off events. [2022-12-13 19:12:11,435 INFO L131 PetriNetUnfolder]: For 281048/281048 co-relation queries the response was YES. [2022-12-13 19:12:11,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97169 conditions, 8532 events. 4953/8532 cut-off events. For 281048/281048 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 62398 event pairs, 146 based on Foata normal form. 166/8170 useless extension candidates. Maximal degree in co-relation 97118. Up to 2194 conditions per place. [2022-12-13 19:12:11,500 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 1022 selfloop transitions, 50 changer transitions 75/1147 dead transitions. [2022-12-13 19:12:11,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1147 transitions, 35762 flow [2022-12-13 19:12:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 19:12:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 19:12:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 10116 transitions. [2022-12-13 19:12:11,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36206156048675736 [2022-12-13 19:12:11,507 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 10116 transitions. [2022-12-13 19:12:11,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 10116 transitions. [2022-12-13 19:12:11,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:12:11,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 10116 transitions. [2022-12-13 19:12:11,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 505.8) internal successors, (10116), 20 states have internal predecessors, (10116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:11,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1397.0) internal successors, (29337), 21 states have internal predecessors, (29337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:11,528 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1397.0) internal successors, (29337), 21 states have internal predecessors, (29337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:11,528 INFO L175 Difference]: Start difference. First operand has 302 places, 260 transitions, 7002 flow. Second operand 20 states and 10116 transitions. [2022-12-13 19:12:11,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1147 transitions, 35762 flow [2022-12-13 19:12:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1147 transitions, 35696 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-12-13 19:12:11,776 INFO L231 Difference]: Finished difference. Result has 312 places, 258 transitions, 6996 flow [2022-12-13 19:12:11,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6896, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6996, PETRI_PLACES=312, PETRI_TRANSITIONS=258} [2022-12-13 19:12:11,776 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 240 predicate places. [2022-12-13 19:12:11,776 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 258 transitions, 6996 flow [2022-12-13 19:12:11,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 497.21875) internal successors, (15911), 32 states have internal predecessors, (15911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:11,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:12:11,777 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:12:11,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-12-13 19:12:11,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-12-13 19:12:11,979 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:12:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:12:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1178826372, now seen corresponding path program 3 times [2022-12-13 19:12:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:12:11,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499149842] [2022-12-13 19:12:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:12:11,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:12:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:12:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:12:12,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:12:12,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499149842] [2022-12-13 19:12:12,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499149842] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:12:12,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388987047] [2022-12-13 19:12:12,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:12:12,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:12:12,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:12:12,521 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:12:12,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-12-13 19:12:12,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:12:12,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:12:12,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 19:12:12,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:12:12,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 19:12:12,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 19:12:13,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:12:13,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-13 19:12:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:12:13,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-13 19:12:14,043 INFO L321 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-12-13 19:12:14,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 751 treesize of output 504 [2022-12-13 19:12:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:12:15,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:12:18,385 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse36 (* c_~j~0 4)) (.cse15 (+ c_~j~0 3))) (let ((.cse23 (not (<= (+ c_~bag2~0 c_~sum2~0) 2147483647))) (.cse24 (not (<= 0 (+ c_~bag2~0 c_~sum2~0 2147483648)))) (.cse25 (<= 0 c_~bag2~0)) (.cse8 (not (< .cse15 c_~N~0))) (.cse5 (+ c_~A~0.offset 8 .cse36)) (.cse6 (+ c_~A~0.offset .cse36)) (.cse7 (+ c_~A~0.offset .cse36 4))) (and (or (forall ((v_ArrVal_2028 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) c_~A~0.base))) (let ((.cse2 (select .cse4 .cse7)) (.cse1 (select .cse4 .cse6)) (.cse3 (select .cse4 .cse5))) (let ((.cse0 (+ .cse2 c_~bag2~0 .cse1 .cse3))) (or (not (<= c_~cap2~0 .cse0)) (not (< (+ c_~bag2~0 .cse1) c_~cap2~0)) (not (<= (+ .cse2 c_~bag2~0 .cse1 c_~sum2~0) 2147483647)) (not (<= 0 (+ .cse2 c_~bag2~0 .cse1 c_~sum2~0 2147483648))) (not (<= .cse0 2147483647)) (not (<= .cse1 4294967295)) (not (<= 0 (+ .cse2 c_~bag2~0 .cse1 2147483648))) (not (< (+ .cse2 c_~bag2~0 .cse1) c_~cap2~0)) (not (<= 0 (+ 9223372039002259455 .cse1))) (not (<= 0 (+ c_~bag2~0 .cse1 2147483648))) (< .cse3 2147483648)))))) .cse8) (or (and (or .cse8 (forall ((v_ArrVal_2028 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) c_~A~0.base))) (let ((.cse11 (select .cse14 .cse7)) (.cse9 (select .cse14 .cse6)) (.cse12 (select .cse14 .cse5))) (let ((.cse10 (+ .cse11 .cse9 .cse12)) (.cse13 (+ c_~bag2~0 .cse9))) (or (< 4294967295 .cse9) (not (<= .cse10 2147483647)) (not (< (+ .cse11 .cse9) c_~cap2~0)) (not (<= c_~cap2~0 .cse10)) (not (<= 0 (+ .cse11 c_~bag2~0 .cse9 c_~sum2~0 2147483648))) (not (<= 0 (+ .cse11 .cse9 2147483648))) (< .cse12 2147483648) (< 2147483647 .cse13) (< .cse13 c_~cap2~0))))))) (or (<= c_~N~0 .cse15) (forall ((v_ArrVal_2028 (Array Int Int))) (let ((.cse22 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) c_~A~0.base))) (let ((.cse17 (select .cse22 .cse6)) (.cse18 (select .cse22 .cse7)) (.cse16 (select .cse22 .cse5))) (let ((.cse19 (+ .cse18 .cse16)) (.cse20 (+ .cse18 .cse17)) (.cse21 (+ c_~bag2~0 .cse17))) (or (< 4294967295 .cse16) (< (+ c_~bag2~0 .cse17 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse17 c_~sum2~0)) (< (+ .cse18 .cse17 2147483648) 0) (< (+ .cse18 c_~bag2~0 .cse17 c_~sum2~0 2147483648) 0) (< .cse19 c_~cap2~0) (< 2147483647 .cse20) (< 2147483647 .cse19) (< .cse20 c_~cap2~0) (< .cse16 2147483648) (< 2147483647 .cse21) (< .cse21 c_~cap2~0)))))))) .cse23 .cse24 .cse25) (or (not (<= c_~bag2~0 4294967295)) .cse23 .cse24 (not .cse25) (and (or .cse8 (forall ((v_ArrVal_2028 (Array Int Int))) (let ((.cse29 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) c_~A~0.base))) (let ((.cse27 (select .cse29 .cse7)) (.cse28 (select .cse29 .cse5)) (.cse26 (select .cse29 .cse6))) (or (not (<= (+ c_~bag2~0 .cse26) 2147483647)) (not (<= c_~cap2~0 (+ .cse27 .cse26))) (not (<= 0 (+ .cse27 c_~bag2~0 .cse26 c_~sum2~0 2147483648))) (not (<= (+ .cse27 .cse28) 2147483647)) (not (<= 0 (+ .cse27 .cse26 2147483648))) (not (<= .cse28 4294967295)) (< .cse28 2147483648) (not (<= (+ c_~bag2~0 .cse26 c_~sum2~0) 2147483647))))))) (or .cse8 (forall ((v_ArrVal_2028 (Array Int Int))) (let ((.cse35 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) c_~A~0.base))) (let ((.cse32 (select .cse35 .cse7)) (.cse33 (select .cse35 .cse6)) (.cse34 (select .cse35 .cse5))) (let ((.cse31 (+ .cse32 .cse33 .cse34)) (.cse30 (+ c_~bag2~0 .cse33))) (or (not (<= .cse30 2147483647)) (not (<= .cse31 2147483647)) (not (< (+ .cse32 .cse33) c_~cap2~0)) (not (<= c_~cap2~0 .cse31)) (not (<= c_~cap2~0 .cse30)) (not (<= 0 (+ .cse32 c_~bag2~0 .cse33 c_~sum2~0 2147483648))) (not (<= 0 (+ .cse32 .cse33 2147483648))) (< .cse34 2147483648)))))))))))) is different from false [2022-12-13 19:12:18,749 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse0 (not (< 3 c_~N~0))) (.cse6 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse7 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_2028 (Array Int Int)) (v_ArrVal_2027 (Array Int Int))) (let ((.cse5 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2027) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse3 (select .cse5 .cse7)) (.cse2 (select .cse5 .cse6)) (.cse4 (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (let ((.cse1 (+ .cse3 .cse2 .cse4))) (or (not (<= c_~cap2~0 .cse1)) (< .cse2 2147483648) (not (< (+ .cse3 .cse4) c_~cap2~0)) (not (<= .cse1 2147483647)) (not (<= .cse4 2147483647)) (not (<= c_~cap2~0 .cse4)) (not (<= 0 (+ .cse3 .cse4 2147483648))))))))) (or (forall ((v_ArrVal_2028 (Array Int Int)) (v_ArrVal_2027 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2027) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse10 (select .cse11 .cse6)) (.cse8 (select .cse11 .cse7)) (.cse9 (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= c_~cap2~0 (+ .cse8 .cse9))) (< .cse10 2147483648) (not (<= .cse10 4294967295)) (not (<= (+ .cse8 .cse10) 2147483647)) (not (<= .cse9 2147483647)) (not (<= 0 (+ .cse8 .cse9 2147483648))))))) .cse0) (or .cse0 (forall ((v_ArrVal_2028 (Array Int Int)) (v_ArrVal_2027 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2027) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse15 (select .cse16 .cse7)) (.cse13 (select .cse16 .cse6)) (.cse14 (select .cse16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (let ((.cse12 (+ .cse15 .cse13 .cse14))) (or (< .cse12 c_~cap2~0) (< .cse13 2147483648) (<= c_~cap2~0 .cse14) (< 2147483647 .cse12) (<= c_~cap2~0 (+ .cse15 .cse14)) (< (+ .cse15 .cse14 2147483648) 0) (< (+ .cse14 2147483648) 0))))))))) (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) is different from false [2022-12-13 19:12:18,846 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (let ((.cse9 (not (< 3 c_~N~0))) (.cse5 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse8 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (or (forall ((v_ArrVal_2028 (Array Int Int)) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2026 Int)) (let ((.cse4 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_2026)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2027) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse4 .cse6)) (.cse2 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse3 (select .cse4 .cse5))) (let ((.cse0 (+ .cse1 .cse2 .cse3))) (or (< 2147483647 .cse0) (<= c_~cap2~0 (+ .cse1 .cse2)) (< (+ .cse1 .cse2 2147483648) 0) (< .cse0 c_~cap2~0) (<= c_~cap2~0 .cse2) (< .cse3 2147483648) (< (+ .cse2 2147483648) 0)))))) .cse9) (or (forall ((v_ArrVal_2028 (Array Int Int)) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2026 Int)) (let ((.cse13 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_2026)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2027) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse10 (select .cse13 .cse6)) (.cse11 (select .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse12 (select .cse13 .cse5))) (or (not (<= 0 (+ .cse10 .cse11 2147483648))) (not (<= .cse11 2147483647)) (not (<= (+ .cse10 .cse12) 2147483647)) (< .cse12 2147483648) (not (<= c_~cap2~0 (+ .cse10 .cse11))) (not (<= .cse12 4294967295)))))) .cse9) (or .cse9 (forall ((v_ArrVal_2028 (Array Int Int)) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2026 Int)) (let ((.cse18 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_2026)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2027) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2028) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse16 (select .cse18 .cse6)) (.cse14 (select .cse18 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse17 (select .cse18 .cse5))) (let ((.cse15 (+ .cse16 .cse14 .cse17))) (or (not (<= c_~cap2~0 .cse14)) (not (<= c_~cap2~0 .cse15)) (not (<= .cse15 2147483647)) (not (<= 0 (+ .cse16 .cse14 2147483648))) (not (<= .cse14 2147483647)) (< .cse17 2147483648) (not (< (+ .cse16 .cse14) c_~cap2~0))))))))))) is different from false [2022-12-13 19:12:18,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:12:18,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 1208 treesize of output 611 [2022-12-13 19:12:18,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1650 treesize of output 1613 [2022-12-13 19:12:18,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1596 treesize of output 1476 [2022-12-13 19:12:18,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:12:18,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1520 treesize of output 1472 [2022-12-13 19:12:19,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1416 treesize of output 1356 [2022-12-13 19:12:19,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1356 treesize of output 1316 [2022-12-13 19:12:19,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:12:19,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2318 treesize of output 2208 [2022-12-13 19:12:19,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2167 treesize of output 2087 [2022-12-13 19:12:19,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2087 treesize of output 1927 [2022-12-13 19:12:19,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1927 treesize of output 1847 [2022-12-13 19:12:19,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:12:19,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1953 treesize of output 1901 [2022-12-13 19:12:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-13 19:12:21,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388987047] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:12:21,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:12:21,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-13 19:12:21,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496241638] [2022-12-13 19:12:21,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:12:21,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 19:12:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:12:21,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 19:12:21,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=719, Unknown=3, NotChecked=168, Total=992 [2022-12-13 19:12:22,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 1397 [2022-12-13 19:12:22,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 258 transitions, 6996 flow. Second operand has 32 states, 32 states have (on average 493.21875) internal successors, (15783), 32 states have internal predecessors, (15783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:22,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:12:22,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 1397 [2022-12-13 19:12:22,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:12:41,582 INFO L130 PetriNetUnfolder]: 10162/16449 cut-off events. [2022-12-13 19:12:41,583 INFO L131 PetriNetUnfolder]: For 502971/502971 co-relation queries the response was YES. [2022-12-13 19:12:41,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196469 conditions, 16449 events. 10162/16449 cut-off events. For 502971/502971 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 118586 event pairs, 170 based on Foata normal form. 304/15521 useless extension candidates. Maximal degree in co-relation 196419. Up to 3911 conditions per place. [2022-12-13 19:12:41,833 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 1898 selfloop transitions, 123 changer transitions 108/2129 dead transitions. [2022-12-13 19:12:41,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 2129 transitions, 65026 flow [2022-12-13 19:12:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 19:12:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-13 19:12:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 18641 transitions. [2022-12-13 19:12:41,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36063765985025825 [2022-12-13 19:12:41,843 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 18641 transitions. [2022-12-13 19:12:41,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 18641 transitions. [2022-12-13 19:12:41,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:12:41,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 18641 transitions. [2022-12-13 19:12:41,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 503.81081081081084) internal successors, (18641), 37 states have internal predecessors, (18641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:41,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 1397.0) internal successors, (53086), 38 states have internal predecessors, (53086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:41,879 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 1397.0) internal successors, (53086), 38 states have internal predecessors, (53086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:41,879 INFO L175 Difference]: Start difference. First operand has 312 places, 258 transitions, 6996 flow. Second operand 37 states and 18641 transitions. [2022-12-13 19:12:41,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 2129 transitions, 65026 flow [2022-12-13 19:12:42,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 2129 transitions, 64877 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-13 19:12:42,278 INFO L231 Difference]: Finished difference. Result has 339 places, 340 transitions, 8943 flow [2022-12-13 19:12:42,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=6849, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8943, PETRI_PLACES=339, PETRI_TRANSITIONS=340} [2022-12-13 19:12:42,278 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 267 predicate places. [2022-12-13 19:12:42,278 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 340 transitions, 8943 flow [2022-12-13 19:12:42,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 493.21875) internal successors, (15783), 32 states have internal predecessors, (15783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:42,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:12:42,280 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:12:42,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-12-13 19:12:42,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:12:42,481 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:12:42,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:12:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1178826377, now seen corresponding path program 3 times [2022-12-13 19:12:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:12:42,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92083720] [2022-12-13 19:12:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:12:42,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:12:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:12:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:12:43,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:12:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92083720] [2022-12-13 19:12:43,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92083720] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:12:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984554498] [2022-12-13 19:12:43,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:12:43,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:12:43,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:12:43,203 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:12:43,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-12-13 19:12:43,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:12:43,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:12:43,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 19:12:43,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:12:43,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 19:12:43,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2022-12-13 19:12:43,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:12:43,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-12-13 19:12:43,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:12:43,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-12-13 19:12:44,752 INFO L321 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-12-13 19:12:44,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 768 treesize of output 511 [2022-12-13 19:12:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:12:45,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:12:48,719 WARN L837 $PredicateComparison]: unable to prove that (or (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (let ((.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (not (< 3 c_~N~0)))) (and (or (forall ((v_ArrVal_2076 (Array Int Int)) (v_ArrVal_2075 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2075) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2076) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse3 .cse5)) (.cse0 (select .cse3 .cse4)) (.cse2 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 0 (+ 2147483649 .cse0)) (< 2147483647 (+ .cse1 .cse2)) (< (+ .cse2 2147483648) 0) (< (+ .cse1 .cse0) (+ .cse2 1)))))) .cse6) (or (forall ((v_ArrVal_2076 (Array Int Int)) (v_ArrVal_2075 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2075) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2076) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse10 .cse4)) (.cse8 (select .cse10 .cse5)) (.cse9 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 0 (+ 2147483649 .cse7)) (not (<= 0 (+ .cse8 .cse7 2147483648))) (not (<= (+ .cse8 .cse9) 2147483647)) (not (<= 0 (+ .cse9 2147483648))))))) .cse6)))) is different from false [2022-12-13 19:12:48,761 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (let ((.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse7 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (not (< 3 c_~N~0)))) (and (or (forall ((v_ArrVal_2073 Int) (v_ArrVal_2076 (Array Int Int)) (v_ArrVal_2075 (Array Int Int))) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_2073)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2075) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2076) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse1 (select .cse3 .cse5)) (.cse0 (select .cse3 .cse4))) (or (not (<= 0 (+ .cse0 .cse1 2147483648))) (not (<= 0 (+ .cse2 2147483648))) (not (<= (+ .cse2 .cse1) 2147483647)) (< 0 (+ 2147483649 .cse0)))))) .cse8) (or (forall ((v_ArrVal_2073 Int) (v_ArrVal_2076 (Array Int Int)) (v_ArrVal_2075 (Array Int Int))) (let ((.cse12 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_2073)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2075) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2076) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse12 .cse4)) (.cse11 (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse10 (select .cse12 .cse5))) (or (< (+ .cse9 .cse10) (+ .cse11 1)) (< (+ .cse11 2147483648) 0) (< 0 (+ 2147483649 .cse9)) (< 2147483647 (+ .cse11 .cse10)))))) .cse8)))) is different from false [2022-12-13 19:12:48,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:12:48,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 463 treesize of output 263 [2022-12-13 19:12:48,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:12:48,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 978 treesize of output 960 [2022-12-13 19:12:48,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 914 treesize of output 874 [2022-12-13 19:12:48,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 874 treesize of output 854 [2022-12-13 19:12:48,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 854 treesize of output 810 [2022-12-13 19:12:48,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:12:48,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 870 treesize of output 832 [2022-12-13 19:12:48,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:12:48,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 766 treesize of output 678 [2022-12-13 19:12:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-13 19:12:50,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984554498] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:12:50,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:12:50,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-13 19:12:50,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358930672] [2022-12-13 19:12:50,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:12:50,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 19:12:50,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:12:50,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 19:12:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=750, Unknown=3, NotChecked=114, Total=992 [2022-12-13 19:12:50,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 1397 [2022-12-13 19:12:50,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 340 transitions, 8943 flow. Second operand has 32 states, 32 states have (on average 493.21875) internal successors, (15783), 32 states have internal predecessors, (15783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:12:50,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:12:50,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 1397 [2022-12-13 19:12:50,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:12:58,478 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 146 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:13:06,492 INFO L130 PetriNetUnfolder]: 9124/15051 cut-off events. [2022-12-13 19:13:06,492 INFO L131 PetriNetUnfolder]: For 472048/472048 co-relation queries the response was YES. [2022-12-13 19:13:06,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180949 conditions, 15051 events. 9124/15051 cut-off events. For 472048/472048 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 109975 event pairs, 234 based on Foata normal form. 720/14695 useless extension candidates. Maximal degree in co-relation 180898. Up to 5309 conditions per place. [2022-12-13 19:13:06,620 INFO L137 encePairwiseOnDemand]: 1386/1397 looper letters, 1043 selfloop transitions, 92 changer transitions 50/1185 dead transitions. [2022-12-13 19:13:06,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1185 transitions, 35889 flow [2022-12-13 19:13:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 19:13:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 19:13:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 11545 transitions. [2022-12-13 19:13:06,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35931032336372976 [2022-12-13 19:13:06,628 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 11545 transitions. [2022-12-13 19:13:06,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 11545 transitions. [2022-12-13 19:13:06,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:13:06,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 11545 transitions. [2022-12-13 19:13:06,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 501.95652173913044) internal successors, (11545), 23 states have internal predecessors, (11545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:06,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 1397.0) internal successors, (33528), 24 states have internal predecessors, (33528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:06,652 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 1397.0) internal successors, (33528), 24 states have internal predecessors, (33528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:06,652 INFO L175 Difference]: Start difference. First operand has 339 places, 340 transitions, 8943 flow. Second operand 23 states and 11545 transitions. [2022-12-13 19:13:06,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1185 transitions, 35889 flow [2022-12-13 19:13:07,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1185 transitions, 35521 flow, removed 124 selfloop flow, removed 14 redundant places. [2022-12-13 19:13:07,175 INFO L231 Difference]: Finished difference. Result has 347 places, 322 transitions, 8276 flow [2022-12-13 19:13:07,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=8092, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8276, PETRI_PLACES=347, PETRI_TRANSITIONS=322} [2022-12-13 19:13:07,176 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 275 predicate places. [2022-12-13 19:13:07,176 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 322 transitions, 8276 flow [2022-12-13 19:13:07,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 493.21875) internal successors, (15783), 32 states have internal predecessors, (15783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:07,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:13:07,177 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-13 19:13:07,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-12-13 19:13:07,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-12-13 19:13:07,379 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:13:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:13:07,380 INFO L85 PathProgramCache]: Analyzing trace with hash -120313614, now seen corresponding path program 4 times [2022-12-13 19:13:07,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:13:07,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428235500] [2022-12-13 19:13:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:13:07,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:13:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:13:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:13:07,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:13:07,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428235500] [2022-12-13 19:13:07,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428235500] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:13:07,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380821879] [2022-12-13 19:13:07,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:13:07,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:13:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:13:07,905 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:13:07,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-12-13 19:13:08,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:13:08,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:13:08,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 19:13:08,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:13:08,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 19:13:08,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 19:13:08,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:13:08,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-13 19:13:09,701 INFO L321 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-12-13 19:13:09,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 647 treesize of output 564 [2022-12-13 19:13:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:13:12,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:13:15,541 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse4 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (not (< 3 c_~N~0)))) (and (or (forall ((v_ArrVal_2119 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse3 .cse5)) (.cse1 (select .cse3 .cse4)) (.cse2 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse0 2147483648) (< 4294967295 .cse0) (not (<= (+ .cse1 .cse0) 2147483647)) (not (<= 0 (+ .cse1 .cse2 2147483648))) (not (<= .cse2 2147483647)))))) .cse6) (or (forall ((v_ArrVal_2119 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse10 .cse5)) (.cse8 (select .cse10 .cse4)) (.cse9 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse7 2147483648) (not (<= (+ .cse8 .cse7 .cse9) 2147483647)) (< 2147483647 .cse9) (not (<= 0 (+ .cse8 .cse9 2147483648))) (< (+ .cse9 2147483648) 0))))) .cse6) (or (<= c_~N~0 3) (forall ((v_ArrVal_2119 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse11 (select .cse14 .cse4)) (.cse13 (select .cse14 .cse5)) (.cse12 (select .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse11 .cse12 2147483648) 0) (< .cse13 2147483648) (< 4294967295 .cse13) (< 2147483647 (+ .cse11 .cse13)) (< 2147483647 .cse12)))))) (or (forall ((v_ArrVal_2119 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse15 (select .cse18 .cse5)) (.cse17 (select .cse18 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse16 (select .cse18 .cse4))) (or (< .cse15 2147483648) (not (<= (+ .cse16 .cse15 .cse17) 2147483647)) (not (<= 0 (+ .cse16 .cse17 2147483648))) (< 4294967295 .cse16) (not (<= 0 (+ 9223372039002259455 .cse16))))))) .cse6))) (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) is different from false [2022-12-13 19:13:15,629 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse8 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (not (< 3 c_~N~0)))) (and (or .cse0 (forall ((v_ArrVal_2119 (Array Int Int)) (v_ArrVal_2117 Int)) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_2117)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse4 .cse6)) (.cse2 (select .cse4 .cse5)) (.cse3 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse1 2147483648) (< 4294967295 .cse1) (not (<= (+ .cse2 .cse1) 2147483647)) (not (<= .cse3 2147483647)) (not (<= 0 (+ .cse2 .cse3 2147483648)))))))) (or (<= c_~N~0 3) (forall ((v_ArrVal_2119 (Array Int Int)) (v_ArrVal_2117 Int)) (let ((.cse12 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_2117)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse12 .cse6)) (.cse10 (select .cse12 .cse5)) (.cse11 (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse9 2147483648) (< 4294967295 .cse9) (< 2147483647 (+ .cse10 .cse9)) (< (+ .cse10 .cse11 2147483648) 0) (< 2147483647 .cse11)))))) (or (forall ((v_ArrVal_2119 (Array Int Int)) (v_ArrVal_2117 Int)) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_2117)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse13 (select .cse16 .cse6)) (.cse15 (select .cse16 .cse5)) (.cse14 (select .cse16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse13 2147483648) (< (+ .cse14 2147483648) 0) (not (<= (+ .cse15 .cse13 .cse14) 2147483647)) (< 2147483647 .cse14) (not (<= 0 (+ .cse15 .cse14 2147483648))))))) .cse0) (or (forall ((v_ArrVal_2119 (Array Int Int)) (v_ArrVal_2117 Int)) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse7 .cse8 v_ArrVal_2117)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse17 (select .cse20 .cse6)) (.cse18 (select .cse20 .cse5)) (.cse19 (select .cse20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse17 2147483648) (< 4294967295 .cse18) (not (<= (+ .cse18 .cse17 .cse19) 2147483647)) (not (<= 0 (+ 9223372039002259455 .cse18))) (not (<= 0 (+ .cse18 .cse19 2147483648))))))) .cse0))) (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) is different from false [2022-12-13 19:13:15,693 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:15,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 964 treesize of output 519 [2022-12-13 19:13:15,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 549 treesize of output 524 [2022-12-13 19:13:15,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:15,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 505 treesize of output 505 [2022-12-13 19:13:15,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 462 treesize of output 438 [2022-12-13 19:13:15,798 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:15,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 664 treesize of output 608 [2022-12-13 19:13:15,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 524 treesize of output 500 [2022-12-13 19:13:15,842 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:15,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 622 treesize of output 580 [2022-12-13 19:13:15,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:15,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 630 treesize of output 572 [2022-12-13 19:13:15,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:15,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 448 treesize of output 420 [2022-12-13 19:13:15,913 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:15,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 420 treesize of output 396 [2022-12-13 19:13:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-13 19:13:17,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380821879] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:13:17,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:13:17,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2022-12-13 19:13:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975999678] [2022-12-13 19:13:17,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:13:17,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 19:13:17,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:13:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 19:13:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=720, Unknown=2, NotChecked=110, Total=930 [2022-12-13 19:13:17,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1397 [2022-12-13 19:13:17,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 322 transitions, 8276 flow. Second operand has 31 states, 31 states have (on average 416.35483870967744) internal successors, (12907), 31 states have internal predecessors, (12907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:17,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:13:17,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1397 [2022-12-13 19:13:17,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:13:47,624 INFO L130 PetriNetUnfolder]: 15212/23482 cut-off events. [2022-12-13 19:13:47,624 INFO L131 PetriNetUnfolder]: For 652891/652891 co-relation queries the response was YES. [2022-12-13 19:13:47,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276898 conditions, 23482 events. 15212/23482 cut-off events. For 652891/652891 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 160396 event pairs, 2706 based on Foata normal form. 583/22327 useless extension candidates. Maximal degree in co-relation 276852. Up to 6860 conditions per place. [2022-12-13 19:13:47,851 INFO L137 encePairwiseOnDemand]: 1383/1397 looper letters, 1342 selfloop transitions, 365 changer transitions 55/1762 dead transitions. [2022-12-13 19:13:47,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1762 transitions, 39743 flow [2022-12-13 19:13:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-13 19:13:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-12-13 19:13:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 31616 transitions. [2022-12-13 19:13:47,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.30175137198759244 [2022-12-13 19:13:47,872 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 31616 transitions. [2022-12-13 19:13:47,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 31616 transitions. [2022-12-13 19:13:47,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:13:47,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 31616 transitions. [2022-12-13 19:13:47,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 421.5466666666667) internal successors, (31616), 75 states have internal predecessors, (31616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:47,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 1397.0) internal successors, (106172), 76 states have internal predecessors, (106172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:47,942 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 1397.0) internal successors, (106172), 76 states have internal predecessors, (106172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:47,942 INFO L175 Difference]: Start difference. First operand has 347 places, 322 transitions, 8276 flow. Second operand 75 states and 31616 transitions. [2022-12-13 19:13:47,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1762 transitions, 39743 flow [2022-12-13 19:13:48,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1762 transitions, 39155 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-12-13 19:13:48,926 INFO L231 Difference]: Finished difference. Result has 421 places, 573 transitions, 16708 flow [2022-12-13 19:13:48,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=8151, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=16708, PETRI_PLACES=421, PETRI_TRANSITIONS=573} [2022-12-13 19:13:48,927 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 349 predicate places. [2022-12-13 19:13:48,927 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 573 transitions, 16708 flow [2022-12-13 19:13:48,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 416.35483870967744) internal successors, (12907), 31 states have internal predecessors, (12907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:13:48,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:13:48,928 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-13 19:13:48,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-12-13 19:13:49,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-12-13 19:13:49,129 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:13:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:13:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash -120313610, now seen corresponding path program 3 times [2022-12-13 19:13:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:13:49,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073805876] [2022-12-13 19:13:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:13:49,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:13:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:13:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:13:49,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:13:49,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073805876] [2022-12-13 19:13:49,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073805876] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:13:49,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219062798] [2022-12-13 19:13:49,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:13:49,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:13:49,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:13:49,731 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:13:49,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-12-13 19:13:50,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 19:13:50,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:13:50,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 19:13:50,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:13:50,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 19:13:50,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2022-12-13 19:13:50,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:13:50,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-12-13 19:13:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:13:52,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:13:56,270 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse6 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (<= c_~N~0 3))) (and (or .cse0 (forall ((v_ArrVal_2162 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2162) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse1 (select .cse5 .cse8)) (.cse2 (select .cse5 .cse7)) (.cse3 (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (select .cse5 .cse6))) (or (< .cse1 0) (<= 0 (+ .cse1 .cse2 2147483648)) (< 2147483647 (+ .cse3 .cse4)) (< 4294967295 .cse4) (< (+ 9223372039002259455 .cse4) 0) (< (+ 2147483647 .cse2 .cse3 .cse4) 0)))))) (or (forall ((v_ArrVal_2162 (Array Int Int))) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2162) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse13 .cse8)) (.cse11 (select .cse13 .cse7)) (.cse10 (select .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse12 (select .cse13 .cse6))) (or (< .cse9 0) (< (+ .cse10 2147483648) 0) (< (+ 2147483647 .cse11 .cse12) 0) (<= 0 (+ .cse9 .cse11 2147483648)) (< 2147483647 (+ .cse10 .cse12)))))) .cse0) (or (forall ((v_ArrVal_2162 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2162) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse15 (select .cse18 .cse8)) (.cse14 (select .cse18 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse16 (select .cse18 .cse7)) (.cse17 (select .cse18 .cse6))) (or (not (<= 0 (+ .cse14 2147483648))) (< .cse15 0) (<= 0 (+ .cse15 .cse16 2147483648)) (not (<= (+ .cse14 .cse17) 2147483647)) (not (<= 0 (+ .cse16 .cse17 2147483648))))))) .cse0) (or (forall ((v_ArrVal_2162 (Array Int Int))) (let ((.cse23 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2162) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse19 (select .cse23 .cse8)) (.cse21 (select .cse23 .cse7)) (.cse20 (select .cse23 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse22 (select .cse23 .cse6))) (or (< .cse19 0) (< (+ .cse20 2147483648) 0) (<= 0 (+ .cse19 .cse21 2147483648)) (< 2147483647 (+ .cse20 .cse22)) (< 2147483647 .cse20) (< (+ 2147483647 .cse21 .cse20 .cse22) 0))))) .cse0))) (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) is different from false [2022-12-13 19:13:56,372 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (let ((.cse5 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse7 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse9 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse10 (<= c_~N~0 3))) (and (or (forall ((v_ArrVal_2160 Int) (v_ArrVal_2162 (Array Int Int))) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse8 .cse9 v_ArrVal_2160)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2162) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse1 (select .cse4 .cse7)) (.cse3 (select .cse4 .cse6)) (.cse2 (select .cse4 .cse5))) (or (< 2147483647 (+ .cse0 .cse1)) (< 4294967295 .cse1) (< (+ 9223372039002259455 .cse1) 0) (< (+ .cse0 2147483647 .cse1 .cse2) 0) (< .cse3 0) (<= 0 (+ .cse3 .cse2 2147483648)))))) .cse10) (or (forall ((v_ArrVal_2160 Int) (v_ArrVal_2162 (Array Int Int))) (let ((.cse15 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse8 .cse9 v_ArrVal_2160)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2162) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse12 (select .cse15 .cse7)) (.cse11 (select .cse15 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse14 (select .cse15 .cse6)) (.cse13 (select .cse15 .cse5))) (or (not (<= (+ .cse11 .cse12) 2147483647)) (not (<= 0 (+ .cse12 .cse13 2147483648))) (not (<= 0 (+ .cse11 2147483648))) (< .cse14 0) (<= 0 (+ .cse14 .cse13 2147483648)))))) .cse10) (or (forall ((v_ArrVal_2160 Int) (v_ArrVal_2162 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse8 .cse9 v_ArrVal_2160)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2162) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse17 (select .cse20 .cse7)) (.cse16 (select .cse20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse19 (select .cse20 .cse6)) (.cse18 (select .cse20 .cse5))) (or (< 2147483647 (+ .cse16 .cse17)) (< (+ .cse16 2147483647 .cse17 .cse18) 0) (< (+ .cse16 2147483648) 0) (< 2147483647 .cse16) (< .cse19 0) (<= 0 (+ .cse19 .cse18 2147483648)))))) .cse10) (or (forall ((v_ArrVal_2160 Int) (v_ArrVal_2162 (Array Int Int))) (let ((.cse25 (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse8 .cse9 v_ArrVal_2160)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2162) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse21 (select .cse25 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse23 (select .cse25 .cse6)) (.cse22 (select .cse25 .cse7)) (.cse24 (select .cse25 .cse5))) (or (< 2147483647 (+ .cse21 .cse22)) (< (+ .cse21 2147483648) 0) (< .cse23 0) (<= 0 (+ .cse23 .cse24 2147483648)) (< (+ 2147483647 .cse22 .cse24) 0))))) .cse10)))) is different from false [2022-12-13 19:13:56,438 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:56,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 1152 treesize of output 587 [2022-12-13 19:13:56,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 672 treesize of output 641 [2022-12-13 19:13:56,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 624 treesize of output 588 [2022-12-13 19:13:56,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:56,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 650 treesize of output 630 [2022-12-13 19:13:56,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:56,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 569 treesize of output 575 [2022-12-13 19:13:56,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:56,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 682 treesize of output 630 [2022-12-13 19:13:56,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:56,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 802 treesize of output 694 [2022-12-13 19:13:56,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:56,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 528 treesize of output 500 [2022-12-13 19:13:56,690 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:56,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 500 treesize of output 468 [2022-12-13 19:13:56,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:13:56,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 468 treesize of output 440 [2022-12-13 19:14:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-13 19:14:00,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219062798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:14:00,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:14:00,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2022-12-13 19:14:00,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042646453] [2022-12-13 19:14:00,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:14:00,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 19:14:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:14:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 19:14:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=719, Unknown=2, NotChecked=110, Total=930 [2022-12-13 19:14:00,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1397 [2022-12-13 19:14:00,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 573 transitions, 16708 flow. Second operand has 31 states, 31 states have (on average 416.35483870967744) internal successors, (12907), 31 states have internal predecessors, (12907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:00,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:14:00,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1397 [2022-12-13 19:14:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:14:07,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:14:31,544 INFO L130 PetriNetUnfolder]: 15603/23852 cut-off events. [2022-12-13 19:14:31,544 INFO L131 PetriNetUnfolder]: For 684141/684141 co-relation queries the response was YES. [2022-12-13 19:14:31,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291468 conditions, 23852 events. 15603/23852 cut-off events. For 684141/684141 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 158191 event pairs, 2716 based on Foata normal form. 344/22452 useless extension candidates. Maximal degree in co-relation 291409. Up to 6072 conditions per place. [2022-12-13 19:14:31,822 INFO L137 encePairwiseOnDemand]: 1384/1397 looper letters, 1343 selfloop transitions, 378 changer transitions 36/1757 dead transitions. [2022-12-13 19:14:31,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1757 transitions, 40418 flow [2022-12-13 19:14:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-13 19:14:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-12-13 19:14:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 29916 transitions. [2022-12-13 19:14:31,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.30161210642523717 [2022-12-13 19:14:31,843 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 29916 transitions. [2022-12-13 19:14:31,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 29916 transitions. [2022-12-13 19:14:31,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:14:31,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 29916 transitions. [2022-12-13 19:14:31,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 421.3521126760563) internal successors, (29916), 71 states have internal predecessors, (29916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:31,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 1397.0) internal successors, (100584), 72 states have internal predecessors, (100584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:31,925 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 1397.0) internal successors, (100584), 72 states have internal predecessors, (100584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:31,925 INFO L175 Difference]: Start difference. First operand has 421 places, 573 transitions, 16708 flow. Second operand 71 states and 29916 transitions. [2022-12-13 19:14:31,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1757 transitions, 40418 flow [2022-12-13 19:14:33,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1757 transitions, 40121 flow, removed 85 selfloop flow, removed 21 redundant places. [2022-12-13 19:14:33,937 INFO L231 Difference]: Finished difference. Result has 473 places, 572 transitions, 16896 flow [2022-12-13 19:14:33,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=15155, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=353, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=16896, PETRI_PLACES=473, PETRI_TRANSITIONS=572} [2022-12-13 19:14:33,938 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 401 predicate places. [2022-12-13 19:14:33,938 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 572 transitions, 16896 flow [2022-12-13 19:14:33,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 416.35483870967744) internal successors, (12907), 31 states have internal predecessors, (12907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:33,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:14:33,939 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:14:33,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-12-13 19:14:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-12-13 19:14:34,139 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:14:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1735694745, now seen corresponding path program 4 times [2022-12-13 19:14:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:14:34,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008512004] [2022-12-13 19:14:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:14:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:34,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:14:34,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008512004] [2022-12-13 19:14:34,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008512004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:14:34,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103569679] [2022-12-13 19:14:34,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:14:34,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:14:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:14:34,869 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:14:34,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-12-13 19:14:35,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:14:35,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:14:35,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 19:14:35,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:35,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 19:14:35,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-12-13 19:14:35,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 19:14:35,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:35,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:14:35,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:35,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:14:36,282 INFO L321 Elim1Store]: treesize reduction 28, result has 9.7 percent of original size [2022-12-13 19:14:36,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 701 treesize of output 490 [2022-12-13 19:14:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:36,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:14:39,845 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse7 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_2216 (Array Int Int)) (v_ArrVal_2215 (Array Int Int)) (v_ArrVal_2214 Int)) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_2214)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2215) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2216) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse1 (select .cse3 .cse5)) (.cse0 (select .cse3 .cse4))) (or (not (<= 0 (+ .cse0 .cse1 2147483648))) (not (<= 0 (+ .cse2 2147483648))) (not (<= (+ .cse2 .cse1) 2147483647)) (<= 0 (+ .cse0 2147483648)))))) (forall ((v_ArrVal_2216 (Array Int Int)) (v_ArrVal_2215 (Array Int Int)) (v_ArrVal_2214 Int)) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse6 .cse7 v_ArrVal_2214)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2215) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2216) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse10 (select .cse11 .cse4)) (.cse9 (select .cse11 .cse5)) (.cse8 (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse8 2147483648) 0) (< 2147483647 (+ .cse8 .cse9)) (<= 0 (+ .cse10 2147483648)) (< (+ .cse10 .cse9) (+ .cse8 1)))))))) is different from false [2022-12-13 19:14:39,880 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse13 (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|))) (let ((.cse4 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse7 (+ .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (+ .cse13 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_2216 (Array Int Int)) (v_ArrVal_2215 (Array Int Int)) (v_ArrVal_2211 Int) (v_ArrVal_2214 Int)) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (store .cse6 .cse7 v_ArrVal_2211) .cse8 v_ArrVal_2214)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2215) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2216) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse0 (select .cse3 .cse5)) (.cse2 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse1 (select .cse3 .cse4))) (or (< (+ .cse0 .cse1) (+ .cse2 1)) (< 2147483647 (+ .cse0 .cse2)) (< (+ 2147483648 .cse2) 0) (<= 0 (+ .cse1 2147483648)))))) (forall ((v_ArrVal_2216 (Array Int Int)) (v_ArrVal_2215 (Array Int Int)) (v_ArrVal_2211 Int) (v_ArrVal_2214 Int)) (let ((.cse12 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (store .cse6 .cse7 v_ArrVal_2211) .cse8 v_ArrVal_2214)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2215) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2216) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse9 (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse10 (select .cse12 .cse5)) (.cse11 (select .cse12 .cse4))) (or (not (<= 0 (+ 2147483648 .cse9))) (not (<= (+ .cse10 .cse9) 2147483647)) (not (<= 0 (+ .cse10 .cse11 2147483648))) (<= 0 (+ .cse11 2147483648))))))))) is different from false [2022-12-13 19:14:39,906 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:14:39,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 559 treesize of output 281 [2022-12-13 19:14:39,933 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:14:39,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1318 treesize of output 1268 [2022-12-13 19:14:39,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1222 treesize of output 1142 [2022-12-13 19:14:39,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1142 treesize of output 1102 [2022-12-13 19:14:40,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:14:40,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1162 treesize of output 1124 [2022-12-13 19:14:40,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:14:40,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1058 treesize of output 1014 [2022-12-13 19:14:40,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:14:40,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1014 treesize of output 926 [2022-12-13 19:14:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-13 19:14:40,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103569679] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:14:40,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:14:40,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2022-12-13 19:14:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865107201] [2022-12-13 19:14:40,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:14:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 19:14:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:14:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 19:14:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=8, NotChecked=122, Total=1122 [2022-12-13 19:14:40,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1397 [2022-12-13 19:14:40,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 572 transitions, 16896 flow. Second operand has 34 states, 34 states have (on average 497.20588235294116) internal successors, (16905), 34 states have internal predecessors, (16905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:40,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:14:40,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1397 [2022-12-13 19:14:40,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:14:56,652 INFO L130 PetriNetUnfolder]: 15307/23334 cut-off events. [2022-12-13 19:14:56,652 INFO L131 PetriNetUnfolder]: For 1145683/1145683 co-relation queries the response was YES. [2022-12-13 19:14:56,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293561 conditions, 23334 events. 15307/23334 cut-off events. For 1145683/1145683 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 156087 event pairs, 226 based on Foata normal form. 182/21731 useless extension candidates. Maximal degree in co-relation 293497. Up to 5932 conditions per place. [2022-12-13 19:14:56,935 INFO L137 encePairwiseOnDemand]: 1387/1397 looper letters, 3047 selfloop transitions, 102 changer transitions 190/3339 dead transitions. [2022-12-13 19:14:56,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 3339 transitions, 114397 flow [2022-12-13 19:14:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 19:14:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 19:14:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 17245 transitions. [2022-12-13 19:14:56,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3630679186492063 [2022-12-13 19:14:56,946 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 17245 transitions. [2022-12-13 19:14:56,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 17245 transitions. [2022-12-13 19:14:56,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:14:56,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 17245 transitions. [2022-12-13 19:14:56,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 507.20588235294116) internal successors, (17245), 34 states have internal predecessors, (17245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:56,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 1397.0) internal successors, (48895), 35 states have internal predecessors, (48895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:56,984 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 1397.0) internal successors, (48895), 35 states have internal predecessors, (48895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:56,984 INFO L175 Difference]: Start difference. First operand has 473 places, 572 transitions, 16896 flow. Second operand 34 states and 17245 transitions. [2022-12-13 19:14:56,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 3339 transitions, 114397 flow [2022-12-13 19:14:58,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 3339 transitions, 111978 flow, removed 266 selfloop flow, removed 49 redundant places. [2022-12-13 19:14:58,562 INFO L231 Difference]: Finished difference. Result has 455 places, 569 transitions, 16513 flow [2022-12-13 19:14:58,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1397, PETRI_DIFFERENCE_MINUEND_FLOW=16309, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=16513, PETRI_PLACES=455, PETRI_TRANSITIONS=569} [2022-12-13 19:14:58,563 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 383 predicate places. [2022-12-13 19:14:58,563 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 569 transitions, 16513 flow [2022-12-13 19:14:58,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 497.20588235294116) internal successors, (16905), 34 states have internal predecessors, (16905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:58,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:14:58,564 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 19:14:58,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-12-13 19:14:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:14:58,765 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-12-13 19:14:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1019081377, now seen corresponding path program 1 times [2022-12-13 19:14:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:14:58,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93583711] [2022-12-13 19:14:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:14:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 19:14:59,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:14:59,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93583711] [2022-12-13 19:14:59,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93583711] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:14:59,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53900048] [2022-12-13 19:14:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:59,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:14:59,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:14:59,022 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:14:59,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2439ef-b569-4609-b4ad-ee24eedd606b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-12-13 19:14:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:59,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:14:59,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 19:14:59,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:14:59,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53900048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:14:59,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:14:59,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 19:14:59,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645240532] [2022-12-13 19:14:59,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:14:59,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:14:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:14:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:14:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:14:59,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 553 out of 1397 [2022-12-13 19:14:59,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 569 transitions, 16513 flow. Second operand has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 3 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:59,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:14:59,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 553 of 1397 [2022-12-13 19:14:59,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand