./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/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_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/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_89348fd5-753c-4695-a937-3dbc814caac8/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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- 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 17:14:13,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:14:13,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:14:13,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:14:13,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:14:13,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:14:13,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:14:13,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:14:13,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:14:13,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:14:13,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:14:13,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:14:13,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:14:13,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:14:13,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:14:13,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:14:13,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:14:13,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:14:13,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:14:13,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:14:13,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:14:13,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:14:13,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:14:13,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:14:13,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:14:13,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:14:13,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:14:13,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:14:13,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:14:13,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:14:13,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:14:13,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:14:13,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:14:13,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:14:13,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:14:13,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:14:13,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:14:13,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:14:13,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:14:13,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:14:13,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:14:13,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 17:14:13,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:14:13,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:14:13,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:14:13,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:14:13,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:14:13,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:14:13,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:14:13,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:14:13,286 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:14:13,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:14:13,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:14:13,287 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:14:13,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:14:13,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:14:13,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:14:13,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:14:13,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:14:13,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:14:13,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:14:13,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:14:13,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:14:13,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:14:13,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:14:13,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:14:13,290 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:14:13,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:14:13,290 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:14:13,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:14:13,290 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:14:13,290 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_89348fd5-753c-4695-a937-3dbc814caac8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-12-13 17:14:13,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:14:13,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:14:13,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:14:13,483 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:14:13,483 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:14:13,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-12-13 17:14:16,146 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:14:16,296 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:14:16,297 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-12-13 17:14:16,302 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/data/f392ddbf1/fc0832eaf59245789f5976dd57afb8dd/FLAG4f4df264b [2022-12-13 17:14:16,315 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/data/f392ddbf1/fc0832eaf59245789f5976dd57afb8dd [2022-12-13 17:14:16,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:14:16,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:14:16,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:14:16,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:14:16,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:14:16,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4e7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16, skipping insertion in model container [2022-12-13 17:14:16,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:14:16,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:14:16,507 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_89348fd5-753c-4695-a937-3dbc814caac8/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-12-13 17:14:16,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:14:16,523 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:14:16,540 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_89348fd5-753c-4695-a937-3dbc814caac8/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-12-13 17:14:16,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:14:16,556 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:14:16,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16 WrapperNode [2022-12-13 17:14:16,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:14:16,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:14:16,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:14:16,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:14:16,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,599 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 328 [2022-12-13 17:14:16,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:14:16,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:14:16,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:14:16,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:14:16,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:14:16,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:14:16,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:14:16,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:14:16,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (1/1) ... [2022-12-13 17:14:16,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:14:16,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:16,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:14:16,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:14:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:14:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:14:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:14:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:14:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 17:14:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 17:14:16,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 17:14:16,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 17:14:16,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:14:16,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:14:16,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:14:16,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:14:16,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:14:16,704 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 17:14:16,793 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:14:16,794 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:14:17,185 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:14:17,196 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:14:17,196 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 17:14:17,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:14:17 BoogieIcfgContainer [2022-12-13 17:14:17,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:14:17,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:14:17,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:14:17,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:14:17,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:14:16" (1/3) ... [2022-12-13 17:14:17,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bd39d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:14:17, skipping insertion in model container [2022-12-13 17:14:17,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:16" (2/3) ... [2022-12-13 17:14:17,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bd39d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:14:17, skipping insertion in model container [2022-12-13 17:14:17,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:14:17" (3/3) ... [2022-12-13 17:14:17,205 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-12-13 17:14:17,211 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:14:17,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:14:17,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-12-13 17:14:17,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:14:17,289 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:14:17,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 453 transitions, 922 flow [2022-12-13 17:14:17,417 INFO L130 PetriNetUnfolder]: 32/451 cut-off events. [2022-12-13 17:14:17,418 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:14:17,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 451 events. 32/451 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 595 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2022-12-13 17:14:17,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 453 transitions, 922 flow [2022-12-13 17:14:17,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 433 transitions, 878 flow [2022-12-13 17:14:17,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:14:17,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 433 transitions, 878 flow [2022-12-13 17:14:17,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 433 transitions, 878 flow [2022-12-13 17:14:17,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 433 transitions, 878 flow [2022-12-13 17:14:17,502 INFO L130 PetriNetUnfolder]: 31/433 cut-off events. [2022-12-13 17:14:17,502 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:14:17,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 433 events. 31/433 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 593 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2022-12-13 17:14:17,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 13832 [2022-12-13 17:14:34,070 INFO L134 LiptonReduction]: Checked pairs total: 16100 [2022-12-13 17:14:34,070 INFO L136 LiptonReduction]: Total number of compositions: 546 [2022-12-13 17:14:34,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:14:34,084 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;@17d7351c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:14:34,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-12-13 17:14:34,086 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 17:14:34,086 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:14:34,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:34,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 17:14:34,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1772, now seen corresponding path program 1 times [2022-12-13 17:14:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:34,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526932579] [2022-12-13 17:14:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:34,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:34,165 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 17:14:34,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:34,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526932579] [2022-12-13 17:14:34,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526932579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:34,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:34,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 17:14:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902073979] [2022-12-13 17:14:34,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:34,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:14:34,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:34,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:14:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:14:34,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 999 [2022-12-13 17:14:34,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 426.5) internal successors, (853), 2 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:34,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 999 [2022-12-13 17:14:34,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:34,334 INFO L130 PetriNetUnfolder]: 213/399 cut-off events. [2022-12-13 17:14:34,335 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 17:14:34,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 399 events. 213/399 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1557 event pairs, 195 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 726. Up to 400 conditions per place. [2022-12-13 17:14:34,338 INFO L137 encePairwiseOnDemand]: 991/999 looper letters, 45 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2022-12-13 17:14:34,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 196 flow [2022-12-13 17:14:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:14:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 17:14:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 906 transitions. [2022-12-13 17:14:34,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2022-12-13 17:14:34,357 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 906 transitions. [2022-12-13 17:14:34,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 906 transitions. [2022-12-13 17:14:34,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:34,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 906 transitions. [2022-12-13 17:14:34,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 453.0) internal successors, (906), 2 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 999.0) internal successors, (2997), 3 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,376 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 999.0) internal successors, (2997), 3 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,378 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 120 flow. Second operand 2 states and 906 transitions. [2022-12-13 17:14:34,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 196 flow [2022-12-13 17:14:34,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 17:14:34,382 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 93 flow [2022-12-13 17:14:34,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2022-12-13 17:14:34,387 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2022-12-13 17:14:34,387 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 93 flow [2022-12-13 17:14:34,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 426.5) internal successors, (853), 2 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:34,388 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:14:34,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:14:34,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash 56504, now seen corresponding path program 1 times [2022-12-13 17:14:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:34,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664334268] [2022-12-13 17:14:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:34,545 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 17:14:34,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:34,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664334268] [2022-12-13 17:14:34,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664334268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:34,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:34,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:14:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883626008] [2022-12-13 17:14:34,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:34,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:34,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:34,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:34,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:34,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 999 [2022-12-13 17:14:34,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:34,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 999 [2022-12-13 17:14:34,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:34,824 INFO L130 PetriNetUnfolder]: 425/791 cut-off events. [2022-12-13 17:14:34,824 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:14:34,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 791 events. 425/791 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3740 event pairs, 390 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1606. Up to 399 conditions per place. [2022-12-13 17:14:34,827 INFO L137 encePairwiseOnDemand]: 991/999 looper letters, 81 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2022-12-13 17:14:34,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 85 transitions, 346 flow [2022-12-13 17:14:34,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1349 transitions. [2022-12-13 17:14:34,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4501167834501168 [2022-12-13 17:14:34,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1349 transitions. [2022-12-13 17:14:34,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1349 transitions. [2022-12-13 17:14:34,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:34,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1349 transitions. [2022-12-13 17:14:34,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.6666666666667) internal successors, (1349), 3 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,839 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 93 flow. Second operand 3 states and 1349 transitions. [2022-12-13 17:14:34,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 85 transitions, 346 flow [2022-12-13 17:14:34,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:14:34,841 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 129 flow [2022-12-13 17:14:34,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2022-12-13 17:14:34,841 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2022-12-13 17:14:34,842 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 129 flow [2022-12-13 17:14:34,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:34,842 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:14:34,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:14:34,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash 56561, now seen corresponding path program 1 times [2022-12-13 17:14:34,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:34,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256419720] [2022-12-13 17:14:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:34,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:34,886 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 17:14:34,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:34,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256419720] [2022-12-13 17:14:34,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256419720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:34,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:34,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:14:34,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315047427] [2022-12-13 17:14:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:34,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:34,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 999 [2022-12-13 17:14:34,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:34,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:34,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 999 [2022-12-13 17:14:34,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:35,075 INFO L130 PetriNetUnfolder]: 425/787 cut-off events. [2022-12-13 17:14:35,075 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:14:35,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 787 events. 425/787 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3721 event pairs, 390 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 1613. Up to 787 conditions per place. [2022-12-13 17:14:35,078 INFO L137 encePairwiseOnDemand]: 996/999 looper letters, 45 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2022-12-13 17:14:35,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 217 flow [2022-12-13 17:14:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:35,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:35,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1299 transitions. [2022-12-13 17:14:35,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43343343343343343 [2022-12-13 17:14:35,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1299 transitions. [2022-12-13 17:14:35,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1299 transitions. [2022-12-13 17:14:35,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:35,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1299 transitions. [2022-12-13 17:14:35,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,088 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 129 flow. Second operand 3 states and 1299 transitions. [2022-12-13 17:14:35,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 217 flow [2022-12-13 17:14:35,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:14:35,089 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 119 flow [2022-12-13 17:14:35,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-12-13 17:14:35,090 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2022-12-13 17:14:35,090 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 119 flow [2022-12-13 17:14:35,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:35,091 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:14:35,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:14:35,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:35,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash 56562, now seen corresponding path program 1 times [2022-12-13 17:14:35,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:35,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707745527] [2022-12-13 17:14:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:35,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:35,141 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 17:14:35,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:35,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707745527] [2022-12-13 17:14:35,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707745527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:35,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:35,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:14:35,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416070250] [2022-12-13 17:14:35,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:35,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:35,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:35,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:35,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 999 [2022-12-13 17:14:35,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:35,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 999 [2022-12-13 17:14:35,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:35,323 INFO L130 PetriNetUnfolder]: 425/783 cut-off events. [2022-12-13 17:14:35,323 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:14:35,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 783 events. 425/783 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3690 event pairs, 390 based on Foata normal form. 2/431 useless extension candidates. Maximal degree in co-relation 1602. Up to 783 conditions per place. [2022-12-13 17:14:35,327 INFO L137 encePairwiseOnDemand]: 996/999 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2022-12-13 17:14:35,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 203 flow [2022-12-13 17:14:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1303 transitions. [2022-12-13 17:14:35,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43476810143476813 [2022-12-13 17:14:35,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1303 transitions. [2022-12-13 17:14:35,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1303 transitions. [2022-12-13 17:14:35,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:35,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1303 transitions. [2022-12-13 17:14:35,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 434.3333333333333) internal successors, (1303), 3 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,339 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 119 flow. Second operand 3 states and 1303 transitions. [2022-12-13 17:14:35,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 203 flow [2022-12-13 17:14:35,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:14:35,340 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 116 flow [2022-12-13 17:14:35,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2022-12-13 17:14:35,341 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2022-12-13 17:14:35,341 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 116 flow [2022-12-13 17:14:35,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:35,342 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:14:35,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:14:35,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:35,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1756756, now seen corresponding path program 1 times [2022-12-13 17:14:35,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:35,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704923401] [2022-12-13 17:14:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:35,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:35,396 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 17:14:35,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:35,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704923401] [2022-12-13 17:14:35,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704923401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:35,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:35,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:14:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518431200] [2022-12-13 17:14:35,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:35,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:35,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:35,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:35,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:35,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 999 [2022-12-13 17:14:35,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:35,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 999 [2022-12-13 17:14:35,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:35,564 INFO L130 PetriNetUnfolder]: 425/781 cut-off events. [2022-12-13 17:14:35,564 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:14:35,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 781 events. 425/781 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3675 event pairs, 390 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1599. Up to 781 conditions per place. [2022-12-13 17:14:35,566 INFO L137 encePairwiseOnDemand]: 997/999 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-12-13 17:14:35,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 200 flow [2022-12-13 17:14:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1301 transitions. [2022-12-13 17:14:35,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43410076743410075 [2022-12-13 17:14:35,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1301 transitions. [2022-12-13 17:14:35,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1301 transitions. [2022-12-13 17:14:35,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:35,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1301 transitions. [2022-12-13 17:14:35,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.6666666666667) internal successors, (1301), 3 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,581 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 116 flow. Second operand 3 states and 1301 transitions. [2022-12-13 17:14:35,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 200 flow [2022-12-13 17:14:35,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:14:35,582 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 115 flow [2022-12-13 17:14:35,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2022-12-13 17:14:35,583 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2022-12-13 17:14:35,583 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 115 flow [2022-12-13 17:14:35,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:35,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:14:35,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:14:35,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1756788, now seen corresponding path program 1 times [2022-12-13 17:14:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:35,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577413355] [2022-12-13 17:14:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:35,627 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 17:14:35,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:35,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577413355] [2022-12-13 17:14:35,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577413355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:35,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:35,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:14:35,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692005118] [2022-12-13 17:14:35,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:35,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:35,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:35,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:35,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:35,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 999 [2022-12-13 17:14:35,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:35,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 999 [2022-12-13 17:14:35,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:35,809 INFO L130 PetriNetUnfolder]: 425/779 cut-off events. [2022-12-13 17:14:35,809 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:14:35,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 779 events. 425/779 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3668 event pairs, 390 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1596. Up to 779 conditions per place. [2022-12-13 17:14:35,811 INFO L137 encePairwiseOnDemand]: 997/999 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 17:14:35,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 197 flow [2022-12-13 17:14:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1294 transitions. [2022-12-13 17:14:35,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4317650984317651 [2022-12-13 17:14:35,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1294 transitions. [2022-12-13 17:14:35,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1294 transitions. [2022-12-13 17:14:35,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:35,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1294 transitions. [2022-12-13 17:14:35,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,820 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 115 flow. Second operand 3 states and 1294 transitions. [2022-12-13 17:14:35,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 197 flow [2022-12-13 17:14:35,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:14:35,820 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 114 flow [2022-12-13 17:14:35,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2022-12-13 17:14:35,821 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2022-12-13 17:14:35,821 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 114 flow [2022-12-13 17:14:35,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:35,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:14:35,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:14:35,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:35,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1754157, now seen corresponding path program 1 times [2022-12-13 17:14:35,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:35,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146534022] [2022-12-13 17:14:35,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:35,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:35,858 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 17:14:35,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:35,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146534022] [2022-12-13 17:14:35,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146534022] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:35,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759793225] [2022-12-13 17:14:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:35,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:35,860 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:35,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:14:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:35,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:14:35,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:35,954 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 17:14:35,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:14:35,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759793225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:35,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:14:35,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 17:14:35,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194216360] [2022-12-13 17:14:35,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:35,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:14:35,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:35,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:14:35,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:14:35,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 999 [2022-12-13 17:14:35,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 420.75) internal successors, (1683), 4 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:35,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:35,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 999 [2022-12-13 17:14:35,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:36,260 INFO L130 PetriNetUnfolder]: 425/777 cut-off events. [2022-12-13 17:14:36,260 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:14:36,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 777 events. 425/777 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3591 event pairs, 390 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1591. Up to 390 conditions per place. [2022-12-13 17:14:36,264 INFO L137 encePairwiseOnDemand]: 993/999 looper letters, 67 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2022-12-13 17:14:36,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 313 flow [2022-12-13 17:14:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:14:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:14:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1753 transitions. [2022-12-13 17:14:36,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4386886886886887 [2022-12-13 17:14:36,268 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1753 transitions. [2022-12-13 17:14:36,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1753 transitions. [2022-12-13 17:14:36,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:36,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1753 transitions. [2022-12-13 17:14:36,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 438.25) internal successors, (1753), 4 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:36,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:36,276 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:36,276 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 114 flow. Second operand 4 states and 1753 transitions. [2022-12-13 17:14:36,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 313 flow [2022-12-13 17:14:36,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:14:36,277 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 113 flow [2022-12-13 17:14:36,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2022-12-13 17:14:36,278 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2022-12-13 17:14:36,278 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 113 flow [2022-12-13 17:14:36,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 420.75) internal successors, (1683), 4 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:36,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:36,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:14:36,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:14:36,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:36,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1754158, now seen corresponding path program 1 times [2022-12-13 17:14:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:36,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354112594] [2022-12-13 17:14:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:36,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:36,512 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 17:14:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:36,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354112594] [2022-12-13 17:14:36,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354112594] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:36,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645650134] [2022-12-13 17:14:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:36,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:36,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:36,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:36,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:14:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:36,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:14:36,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:36,576 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 17:14:36,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:14:36,587 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 17:14:36,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645650134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:14:36,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:14:36,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 17:14:36,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792211868] [2022-12-13 17:14:36,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:14:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:36,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:36,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:36,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 999 [2022-12-13 17:14:36,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 113 flow. Second operand has 7 states, 7 states have (on average 421.14285714285717) internal successors, (2948), 7 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:36,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:36,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 999 [2022-12-13 17:14:36,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:37,175 INFO L130 PetriNetUnfolder]: 1061/1938 cut-off events. [2022-12-13 17:14:37,175 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:14:37,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 1938 events. 1061/1938 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10774 event pairs, 975 based on Foata normal form. 0/1076 useless extension candidates. Maximal degree in co-relation 3965. Up to 391 conditions per place. [2022-12-13 17:14:37,181 INFO L137 encePairwiseOnDemand]: 993/999 looper letters, 160 selfloop transitions, 13 changer transitions 0/173 dead transitions. [2022-12-13 17:14:37,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 173 transitions, 761 flow [2022-12-13 17:14:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:14:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:14:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2699 transitions. [2022-12-13 17:14:37,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4502836169502836 [2022-12-13 17:14:37,192 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2699 transitions. [2022-12-13 17:14:37,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2699 transitions. [2022-12-13 17:14:37,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:37,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2699 transitions. [2022-12-13 17:14:37,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 449.8333333333333) internal successors, (2699), 6 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:37,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 999.0) internal successors, (6993), 7 states have internal predecessors, (6993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:37,204 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 999.0) internal successors, (6993), 7 states have internal predecessors, (6993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:37,204 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 113 flow. Second operand 6 states and 2699 transitions. [2022-12-13 17:14:37,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 173 transitions, 761 flow [2022-12-13 17:14:37,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 173 transitions, 753 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:14:37,206 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 204 flow [2022-12-13 17:14:37,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2022-12-13 17:14:37,207 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2022-12-13 17:14:37,207 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 204 flow [2022-12-13 17:14:37,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 421.14285714285717) internal successors, (2948), 7 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:37,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:37,209 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:14:37,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:14:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:37,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:37,411 INFO L85 PathProgramCache]: Analyzing trace with hash 54465133, now seen corresponding path program 1 times [2022-12-13 17:14:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:37,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596034356] [2022-12-13 17:14:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:37,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:37,556 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 17:14:37,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:37,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596034356] [2022-12-13 17:14:37,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596034356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:37,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:37,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:14:37,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774348420] [2022-12-13 17:14:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:37,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:37,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:37,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:37,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:37,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 999 [2022-12-13 17:14:37,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:37,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:37,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 999 [2022-12-13 17:14:37,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:38,149 INFO L130 PetriNetUnfolder]: 2111/3833 cut-off events. [2022-12-13 17:14:38,149 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 17:14:38,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7848 conditions, 3833 events. 2111/3833 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 25144 event pairs, 1950 based on Foata normal form. 0/2133 useless extension candidates. Maximal degree in co-relation 7840. Up to 1939 conditions per place. [2022-12-13 17:14:38,159 INFO L137 encePairwiseOnDemand]: 991/999 looper letters, 71 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-12-13 17:14:38,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 409 flow [2022-12-13 17:14:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1327 transitions. [2022-12-13 17:14:38,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4427761094427761 [2022-12-13 17:14:38,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1327 transitions. [2022-12-13 17:14:38,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1327 transitions. [2022-12-13 17:14:38,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:38,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1327 transitions. [2022-12-13 17:14:38,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.3333333333333) internal successors, (1327), 3 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,170 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 204 flow. Second operand 3 states and 1327 transitions. [2022-12-13 17:14:38,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 409 flow [2022-12-13 17:14:38,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 390 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 17:14:38,173 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 221 flow [2022-12-13 17:14:38,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2022-12-13 17:14:38,174 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2022-12-13 17:14:38,174 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 221 flow [2022-12-13 17:14:38,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:38,175 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:14:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:14:38,175 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:38,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1688422092, now seen corresponding path program 1 times [2022-12-13 17:14:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:38,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755185485] [2022-12-13 17:14:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:14:38,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755185485] [2022-12-13 17:14:38,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755185485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:38,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:38,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:14:38,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851957608] [2022-12-13 17:14:38,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:38,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:38,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:38,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:38,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 999 [2022-12-13 17:14:38,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:38,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 999 [2022-12-13 17:14:38,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:38,817 INFO L130 PetriNetUnfolder]: 2110/3832 cut-off events. [2022-12-13 17:14:38,817 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 17:14:38,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7911 conditions, 3832 events. 2110/3832 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 25139 event pairs, 1950 based on Foata normal form. 1/2153 useless extension candidates. Maximal degree in co-relation 7901. Up to 3832 conditions per place. [2022-12-13 17:14:38,835 INFO L137 encePairwiseOnDemand]: 996/999 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-12-13 17:14:38,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 319 flow [2022-12-13 17:14:38,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:38,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1293 transitions. [2022-12-13 17:14:38,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4314314314314314 [2022-12-13 17:14:38,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1293 transitions. [2022-12-13 17:14:38,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1293 transitions. [2022-12-13 17:14:38,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:38,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1293 transitions. [2022-12-13 17:14:38,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,841 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 221 flow. Second operand 3 states and 1293 transitions. [2022-12-13 17:14:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 319 flow [2022-12-13 17:14:38,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:14:38,844 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 213 flow [2022-12-13 17:14:38,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2022-12-13 17:14:38,844 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2022-12-13 17:14:38,844 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 213 flow [2022-12-13 17:14:38,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:38,845 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:14:38,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:14:38,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:38,846 INFO L85 PathProgramCache]: Analyzing trace with hash 723595063, now seen corresponding path program 1 times [2022-12-13 17:14:38,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:38,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335445763] [2022-12-13 17:14:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:38,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:38,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335445763] [2022-12-13 17:14:38,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335445763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:38,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:38,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:38,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899799701] [2022-12-13 17:14:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:14:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:14:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:14:38,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 999 [2022-12-13 17:14:38,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 413.5) internal successors, (1654), 4 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:38,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 999 [2022-12-13 17:14:38,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:39,470 INFO L130 PetriNetUnfolder]: 1689/3069 cut-off events. [2022-12-13 17:14:39,470 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 17:14:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6332 conditions, 3069 events. 1689/3069 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 19434 event pairs, 1560 based on Foata normal form. 1/1718 useless extension candidates. Maximal degree in co-relation 6322. Up to 3064 conditions per place. [2022-12-13 17:14:39,479 INFO L137 encePairwiseOnDemand]: 994/999 looper letters, 44 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2022-12-13 17:14:39,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 315 flow [2022-12-13 17:14:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:14:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:14:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1688 transitions. [2022-12-13 17:14:39,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42242242242242245 [2022-12-13 17:14:39,481 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1688 transitions. [2022-12-13 17:14:39,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1688 transitions. [2022-12-13 17:14:39,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:39,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1688 transitions. [2022-12-13 17:14:39,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 422.0) internal successors, (1688), 4 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 17:14:39,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:39,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:39,486 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 213 flow. Second operand 4 states and 1688 transitions. [2022-12-13 17:14:39,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 315 flow [2022-12-13 17:14:39,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 311 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 17:14:39,488 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 232 flow [2022-12-13 17:14:39,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2022-12-13 17:14:39,488 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2022-12-13 17:14:39,488 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 232 flow [2022-12-13 17:14:39,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 413.5) internal successors, (1654), 4 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:39,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:39,489 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 17:14:39,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:14:39,489 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 720998905, now seen corresponding path program 2 times [2022-12-13 17:14:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:39,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401325954] [2022-12-13 17:14:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:39,544 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 17:14:39,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:39,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401325954] [2022-12-13 17:14:39,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401325954] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:39,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432494949] [2022-12-13 17:14:39,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:14:39,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:39,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:39,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:14:39,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:14:39,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:14:39,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:14:39,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:39,630 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 17:14:39,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:14:39,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432494949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:39,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:14:39,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 17:14:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348466209] [2022-12-13 17:14:39,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:14:39,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 999 [2022-12-13 17:14:39,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:39,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:39,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 999 [2022-12-13 17:14:39,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:40,099 INFO L130 PetriNetUnfolder]: 1689/3067 cut-off events. [2022-12-13 17:14:40,099 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-13 17:14:40,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6332 conditions, 3067 events. 1689/3067 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 19414 event pairs, 1560 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 6321. Up to 3067 conditions per place. [2022-12-13 17:14:40,109 INFO L137 encePairwiseOnDemand]: 996/999 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2022-12-13 17:14:40,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 310 flow [2022-12-13 17:14:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1303 transitions. [2022-12-13 17:14:40,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43476810143476813 [2022-12-13 17:14:40,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1303 transitions. [2022-12-13 17:14:40,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1303 transitions. [2022-12-13 17:14:40,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:40,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1303 transitions. [2022-12-13 17:14:40,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 434.3333333333333) internal successors, (1303), 3 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,118 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 232 flow. Second operand 3 states and 1303 transitions. [2022-12-13 17:14:40,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 310 flow [2022-12-13 17:14:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 270 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-12-13 17:14:40,119 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 174 flow [2022-12-13 17:14:40,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2022-12-13 17:14:40,120 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2022-12-13 17:14:40,120 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 174 flow [2022-12-13 17:14:40,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:40,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:40,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:14:40,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:14:40,321 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:40,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 955499643, now seen corresponding path program 1 times [2022-12-13 17:14:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:40,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749504173] [2022-12-13 17:14:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:40,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:40,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:40,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749504173] [2022-12-13 17:14:40,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749504173] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:40,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870315560] [2022-12-13 17:14:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:40,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:40,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:40,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:40,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:14:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:40,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:14:40,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:40,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:14:40,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870315560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:40,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:14:40,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 17:14:40,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172917768] [2022-12-13 17:14:40,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:40,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:14:40,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:14:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:14:40,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 999 [2022-12-13 17:14:40,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:40,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 999 [2022-12-13 17:14:40,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:40,979 INFO L130 PetriNetUnfolder]: 1689/3059 cut-off events. [2022-12-13 17:14:40,979 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:14:40,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 3059 events. 1689/3059 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 19362 event pairs, 1560 based on Foata normal form. 0/1715 useless extension candidates. Maximal degree in co-relation 6278. Up to 1528 conditions per place. [2022-12-13 17:14:40,987 INFO L137 encePairwiseOnDemand]: 993/999 looper letters, 66 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2022-12-13 17:14:40,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 355 flow [2022-12-13 17:14:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:14:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:14:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1741 transitions. [2022-12-13 17:14:40,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43568568568568566 [2022-12-13 17:14:40,989 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1741 transitions. [2022-12-13 17:14:40,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1741 transitions. [2022-12-13 17:14:40,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:40,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1741 transitions. [2022-12-13 17:14:40,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 435.25) internal successors, (1741), 4 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,994 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 174 flow. Second operand 4 states and 1741 transitions. [2022-12-13 17:14:40,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 355 flow [2022-12-13 17:14:40,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:14:40,995 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 173 flow [2022-12-13 17:14:40,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2022-12-13 17:14:40,996 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2022-12-13 17:14:40,996 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 173 flow [2022-12-13 17:14:40,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:40,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:41,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:14:41,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 17:14:41,198 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash 955499645, now seen corresponding path program 1 times [2022-12-13 17:14:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:41,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349350516] [2022-12-13 17:14:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:41,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349350516] [2022-12-13 17:14:41,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349350516] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:41,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18421165] [2022-12-13 17:14:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:41,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:41,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:41,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:41,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:14:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:41,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:14:41,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:41,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:14:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:41,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18421165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:14:41,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:14:41,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:14:41,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809005663] [2022-12-13 17:14:41,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:14:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:41,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:41,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 999 [2022-12-13 17:14:41,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 421.7142857142857) internal successors, (2952), 7 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:41,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:41,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 999 [2022-12-13 17:14:41,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:42,553 INFO L130 PetriNetUnfolder]: 4209/7607 cut-off events. [2022-12-13 17:14:42,553 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 17:14:42,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15589 conditions, 7607 events. 4209/7607 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 55938 event pairs, 3900 based on Foata normal form. 0/4279 useless extension candidates. Maximal degree in co-relation 15582. Up to 1544 conditions per place. [2022-12-13 17:14:42,572 INFO L137 encePairwiseOnDemand]: 993/999 looper letters, 135 selfloop transitions, 13 changer transitions 0/148 dead transitions. [2022-12-13 17:14:42,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 148 transitions, 707 flow [2022-12-13 17:14:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:14:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:14:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2663 transitions. [2022-12-13 17:14:42,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4442776109442776 [2022-12-13 17:14:42,576 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2663 transitions. [2022-12-13 17:14:42,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2663 transitions. [2022-12-13 17:14:42,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:42,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2663 transitions. [2022-12-13 17:14:42,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 443.8333333333333) internal successors, (2663), 6 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:42,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 999.0) internal successors, (6993), 7 states have internal predecessors, (6993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:42,583 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 999.0) internal successors, (6993), 7 states have internal predecessors, (6993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:42,583 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 173 flow. Second operand 6 states and 2663 transitions. [2022-12-13 17:14:42,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 148 transitions, 707 flow [2022-12-13 17:14:42,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 148 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:14:42,584 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 264 flow [2022-12-13 17:14:42,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2022-12-13 17:14:42,585 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2022-12-13 17:14:42,585 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 264 flow [2022-12-13 17:14:42,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 421.7142857142857) internal successors, (2952), 7 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:42,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:42,585 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:42,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:14:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:42,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1750425056, now seen corresponding path program 2 times [2022-12-13 17:14:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:42,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741178561] [2022-12-13 17:14:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:14:42,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:42,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741178561] [2022-12-13 17:14:42,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741178561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:42,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72160172] [2022-12-13 17:14:42,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:14:42,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:42,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:42,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:14:42,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:14:42,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:14:42,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:14:42,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:14:42,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:14:42,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72160172] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:42,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:14:42,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 17:14:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201541983] [2022-12-13 17:14:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:42,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:42,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:14:42,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 999 [2022-12-13 17:14:42,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:42,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:42,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 999 [2022-12-13 17:14:42,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:43,976 INFO L130 PetriNetUnfolder]: 4209/7599 cut-off events. [2022-12-13 17:14:43,976 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-13 17:14:43,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15644 conditions, 7599 events. 4209/7599 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 55807 event pairs, 3900 based on Foata normal form. 8/4287 useless extension candidates. Maximal degree in co-relation 15634. Up to 7584 conditions per place. [2022-12-13 17:14:43,998 INFO L137 encePairwiseOnDemand]: 996/999 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2022-12-13 17:14:43,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 352 flow [2022-12-13 17:14:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:14:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1299 transitions. [2022-12-13 17:14:44,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43343343343343343 [2022-12-13 17:14:44,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1299 transitions. [2022-12-13 17:14:44,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1299 transitions. [2022-12-13 17:14:44,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:44,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1299 transitions. [2022-12-13 17:14:44,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:44,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:44,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 999.0) internal successors, (3996), 4 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:44,007 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 264 flow. Second operand 3 states and 1299 transitions. [2022-12-13 17:14:44,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 352 flow [2022-12-13 17:14:44,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 307 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-13 17:14:44,009 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 201 flow [2022-12-13 17:14:44,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2022-12-13 17:14:44,009 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2022-12-13 17:14:44,009 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 201 flow [2022-12-13 17:14:44,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:44,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:44,009 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:44,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 17:14:44,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:14:44,210 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:44,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:44,211 INFO L85 PathProgramCache]: Analyzing trace with hash -806079582, now seen corresponding path program 1 times [2022-12-13 17:14:44,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:44,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296185105] [2022-12-13 17:14:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:44,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:44,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:44,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296185105] [2022-12-13 17:14:44,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296185105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:44,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:44,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419271537] [2022-12-13 17:14:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:44,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:14:44,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:14:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:14:44,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 999 [2022-12-13 17:14:44,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 414.75) internal successors, (1659), 4 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 17:14:44,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:44,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 999 [2022-12-13 17:14:44,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:45,413 INFO L130 PetriNetUnfolder]: 4205/7595 cut-off events. [2022-12-13 17:14:45,413 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 17:14:45,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15537 conditions, 7595 events. 4205/7595 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 55683 event pairs, 3900 based on Foata normal form. 0/4275 useless extension candidates. Maximal degree in co-relation 15530. Up to 7591 conditions per place. [2022-12-13 17:14:45,429 INFO L137 encePairwiseOnDemand]: 995/999 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2022-12-13 17:14:45,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 303 flow [2022-12-13 17:14:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:14:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:14:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1681 transitions. [2022-12-13 17:14:45,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42067067067067065 [2022-12-13 17:14:45,431 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1681 transitions. [2022-12-13 17:14:45,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1681 transitions. [2022-12-13 17:14:45,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:45,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1681 transitions. [2022-12-13 17:14:45,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 420.25) internal successors, (1681), 4 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:45,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:45,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:45,436 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 201 flow. Second operand 4 states and 1681 transitions. [2022-12-13 17:14:45,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 303 flow [2022-12-13 17:14:45,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:14:45,437 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 202 flow [2022-12-13 17:14:45,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2022-12-13 17:14:45,437 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2022-12-13 17:14:45,437 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 202 flow [2022-12-13 17:14:45,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 414.75) internal successors, (1659), 4 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 17:14:45,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:45,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:45,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 17:14:45,438 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash -908686299, now seen corresponding path program 1 times [2022-12-13 17:14:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:45,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544853444] [2022-12-13 17:14:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:14:45,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:45,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544853444] [2022-12-13 17:14:45,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544853444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:45,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:45,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:45,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714933131] [2022-12-13 17:14:45,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:45,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:14:45,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:14:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:14:45,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 999 [2022-12-13 17:14:45,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 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 17:14:45,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:45,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 999 [2022-12-13 17:14:45,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:46,359 INFO L130 PetriNetUnfolder]: 3369/6091 cut-off events. [2022-12-13 17:14:46,359 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 17:14:46,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12490 conditions, 6091 events. 3369/6091 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 43271 event pairs, 3120 based on Foata normal form. 4/3439 useless extension candidates. Maximal degree in co-relation 12483. Up to 6075 conditions per place. [2022-12-13 17:14:46,376 INFO L137 encePairwiseOnDemand]: 995/999 looper letters, 47 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2022-12-13 17:14:46,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 308 flow [2022-12-13 17:14:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:14:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:14:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1681 transitions. [2022-12-13 17:14:46,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42067067067067065 [2022-12-13 17:14:46,380 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1681 transitions. [2022-12-13 17:14:46,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1681 transitions. [2022-12-13 17:14:46,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:46,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1681 transitions. [2022-12-13 17:14:46,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 420.25) internal successors, (1681), 4 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:46,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:46,386 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 999.0) internal successors, (4995), 5 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:46,386 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 202 flow. Second operand 4 states and 1681 transitions. [2022-12-13 17:14:46,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 308 flow [2022-12-13 17:14:46,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 302 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 17:14:46,387 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 215 flow [2022-12-13 17:14:46,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2022-12-13 17:14:46,388 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2022-12-13 17:14:46,388 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 215 flow [2022-12-13 17:14:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 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 17:14:46,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:46,388 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:46,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 17:14:46,389 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:14:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1033905767, now seen corresponding path program 1 times [2022-12-13 17:14:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:46,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654361711] [2022-12-13 17:14:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:47,265 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 17:14:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654361711] [2022-12-13 17:14:47,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654361711] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:47,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735512168] [2022-12-13 17:14:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:47,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:47,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:47,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:47,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:14:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:47,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 17:14:47,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:47,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:14:47,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:14:47,431 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 17:14:47,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 17:14:47,481 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 17:14:47,536 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:14:47,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:14:47,577 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 17:14:47,667 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 17:14:47,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 17:14:47,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 17:14:47,786 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 17:14:47,786 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 16 treesize of output 18 [2022-12-13 17:14:47,831 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 17:14:47,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:14:47,866 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 17:14:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:14:47,911 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 17:14:47,937 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 17:14:47,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:14:47,993 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_444) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 9223372039002259456)) is different from false [2022-12-13 17:14:50,281 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:14:50,281 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 35 treesize of output 36 [2022-12-13 17:14:50,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:14:50,299 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 4897 treesize of output 4773 [2022-12-13 17:14:50,359 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 4758 treesize of output 4374 [2022-12-13 17:14:50,402 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 2187 treesize of output 2091 [2022-12-13 17:14:50,436 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 4278 treesize of output 3510 [2022-12-13 17:14:50,483 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 3510 treesize of output 3318 [2022-12-13 17:15:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 17:15:01,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735512168] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:01,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:01,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 17:15:01,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344638472] [2022-12-13 17:15:01,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:01,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 17:15:01,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 17:15:01,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=584, Unknown=12, NotChecked=52, Total=812 [2022-12-13 17:15:01,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 999 [2022-12-13 17:15:01,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 215 flow. Second operand has 29 states, 29 states have (on average 347.3448275862069) internal successors, (10073), 29 states have internal predecessors, (10073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:01,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:15:01,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 999 [2022-12-13 17:15:01,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:15:02,233 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_444) c_~get_2~0.base) .cse0) 9223372039002259456)) (forall ((v_ArrVal_444 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_444) c_~get_2~0.base) .cse0) 9223372039002259456)) (forall ((v_ArrVal_441 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106| Int) (v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106|) 0)) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_441) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_444) c_~get_2~0.base) .cse0) 9223372039002259456))) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106| Int)) (or (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_444) c_~get_2~0.base) .cse0) 9223372039002259456)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106|) 0)))))) is different from false [2022-12-13 17:15:02,407 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_444) c_~get_2~0.base) .cse0) 9223372039002259456)) (forall ((v_ArrVal_441 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106| Int) (v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106|) 0)) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_441) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_444) c_~get_2~0.base) .cse0) 9223372039002259456))) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106| Int)) (or (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_444) c_~get_2~0.base) .cse0) 9223372039002259456)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_106|) 0)))))) is different from false [2022-12-13 17:15:04,436 INFO L130 PetriNetUnfolder]: 6349/11553 cut-off events. [2022-12-13 17:15:04,436 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 17:15:04,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23792 conditions, 11553 events. 6349/11553 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 92901 event pairs, 4290 based on Foata normal form. 0/6653 useless extension candidates. Maximal degree in co-relation 23784. Up to 5112 conditions per place. [2022-12-13 17:15:04,467 INFO L137 encePairwiseOnDemand]: 986/999 looper letters, 118 selfloop transitions, 21 changer transitions 0/139 dead transitions. [2022-12-13 17:15:04,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 139 transitions, 772 flow [2022-12-13 17:15:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:15:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 17:15:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5300 transitions. [2022-12-13 17:15:04,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35368702035368704 [2022-12-13 17:15:04,473 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5300 transitions. [2022-12-13 17:15:04,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5300 transitions. [2022-12-13 17:15:04,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:15:04,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5300 transitions. [2022-12-13 17:15:04,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 353.3333333333333) internal successors, (5300), 15 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:04,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 999.0) internal successors, (15984), 16 states have internal predecessors, (15984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:04,487 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 999.0) internal successors, (15984), 16 states have internal predecessors, (15984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:04,487 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 215 flow. Second operand 15 states and 5300 transitions. [2022-12-13 17:15:04,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 139 transitions, 772 flow [2022-12-13 17:15:04,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 139 transitions, 734 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 17:15:04,489 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 357 flow [2022-12-13 17:15:04,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=357, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2022-12-13 17:15:04,490 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2022-12-13 17:15:04,490 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 357 flow [2022-12-13 17:15:04,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 347.3448275862069) internal successors, (10073), 29 states have internal predecessors, (10073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:04,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:15:04,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:04,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 17:15:04,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:15:04,692 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:15:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1033905747, now seen corresponding path program 1 times [2022-12-13 17:15:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:04,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639185123] [2022-12-13 17:15:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:15:05,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:05,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639185123] [2022-12-13 17:15:05,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639185123] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:15:05,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219247838] [2022-12-13 17:15:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:05,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:05,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:15:05,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:15:05,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:15:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:05,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 17:15:05,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:05,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-13 17:15:05,738 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 17:15:05,829 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:15:05,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:15:05,878 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 17:15:05,936 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:15:05,937 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 11 treesize of output 11 [2022-12-13 17:15:05,986 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 17:15:06,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:15:06,038 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 17:15:06,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:15:06,092 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 17:15:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:15:06,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:06,156 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_506 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_506) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset)) 2147483648)) is different from false [2022-12-13 17:15:08,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:15:08,489 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 35 treesize of output 36 [2022-12-13 17:15:08,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:15:08,501 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 2449 treesize of output 2389 [2022-12-13 17:15:08,522 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 2374 treesize of output 2278 [2022-12-13 17:15:08,544 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 2278 treesize of output 2086 [2022-12-13 17:15:08,567 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 2086 treesize of output 1702 [2022-12-13 17:15:08,593 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 875 treesize of output 827 [2022-12-13 17:15:10,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:15:10,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 204 treesize of output 311 [2022-12-13 17:15:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:15:10,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219247838] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:10,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:10,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-12-13 17:15:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017170182] [2022-12-13 17:15:10,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:10,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 17:15:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 17:15:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=516, Unknown=7, NotChecked=48, Total=702 [2022-12-13 17:15:10,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 999 [2022-12-13 17:15:10,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 357 flow. Second operand has 27 states, 27 states have (on average 346.2962962962963) internal successors, (9350), 27 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:10,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:15:10,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 999 [2022-12-13 17:15:10,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:15:11,124 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (* c_~id_3~0 4))) (let ((.cse0 (+ |c_#StackHeapBarrier| 1)) (.cse1 (+ .cse2 c_~get_5~0.offset))) (and (<= .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) (forall ((v_ArrVal_506 (Array Int Int)) (v_ArrVal_505 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_505) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_506) c_~get_5~0.base) .cse1) 2147483648)) (or (forall ((v_ArrVal_504 (Array Int Int)) (v_ArrVal_503 (Array Int Int)) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_505 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108| Int) (|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_109| Int) (v_ArrVal_502 Int)) (or (< (select (select (store (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_109| v_ArrVal_503) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108| v_ArrVal_504) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_505) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_506) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_109| v_ArrVal_502) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_109|) 0)))) (< |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108| Int)) (or (forall ((v_ArrVal_504 (Array Int Int)) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_505 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108| v_ArrVal_504) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_505) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_506) c_~get_5~0.base) .cse1) 2147483648)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108|) 0)))) (<= 0 c_~id_3~0) (<= .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base|) (forall ((v_ArrVal_504 (Array Int Int)) (v_ArrVal_503 (Array Int Int)) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_505 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108| Int)) (or (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_503) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108| v_ArrVal_504) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_505) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_506) c_~get_5~0.base) .cse1) 2147483648) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_108|) 0)))) (forall ((v_ArrVal_504 (Array Int Int)) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_505 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_504) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_505) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_506) c_~get_5~0.base) .cse1) 2147483648))))) is different from false [2022-12-13 17:15:13,654 INFO L130 PetriNetUnfolder]: 6238/11772 cut-off events. [2022-12-13 17:15:13,654 INFO L131 PetriNetUnfolder]: For 2095/2095 co-relation queries the response was YES. [2022-12-13 17:15:13,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28803 conditions, 11772 events. 6238/11772 cut-off events. For 2095/2095 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 97865 event pairs, 4309 based on Foata normal form. 0/8314 useless extension candidates. Maximal degree in co-relation 28789. Up to 4319 conditions per place. [2022-12-13 17:15:13,686 INFO L137 encePairwiseOnDemand]: 983/999 looper letters, 165 selfloop transitions, 38 changer transitions 0/203 dead transitions. [2022-12-13 17:15:13,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 203 transitions, 1275 flow [2022-12-13 17:15:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:15:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 17:15:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5316 transitions. [2022-12-13 17:15:13,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35475475475475476 [2022-12-13 17:15:13,692 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5316 transitions. [2022-12-13 17:15:13,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5316 transitions. [2022-12-13 17:15:13,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:15:13,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5316 transitions. [2022-12-13 17:15:13,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 354.4) internal successors, (5316), 15 states have internal predecessors, (5316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:13,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 999.0) internal successors, (15984), 16 states have internal predecessors, (15984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:13,705 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 999.0) internal successors, (15984), 16 states have internal predecessors, (15984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:13,705 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 357 flow. Second operand 15 states and 5316 transitions. [2022-12-13 17:15:13,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 203 transitions, 1275 flow [2022-12-13 17:15:13,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 203 transitions, 1253 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-12-13 17:15:13,711 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 653 flow [2022-12-13 17:15:13,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=999, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=653, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2022-12-13 17:15:13,711 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2022-12-13 17:15:13,711 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 653 flow [2022-12-13 17:15:13,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 346.2962962962963) internal successors, (9350), 27 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:13,712 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:15:13,712 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:13,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 17:15:13,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:13,914 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 17:15:13,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1033905749, now seen corresponding path program 1 times [2022-12-13 17:15:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:13,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424724913] [2022-12-13 17:15:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:13,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:14,581 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 17:15:14,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:14,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424724913] [2022-12-13 17:15:14,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424724913] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:15:14,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298861769] [2022-12-13 17:15:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:14,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:14,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:15:14,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:15:14,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89348fd5-753c-4695-a937-3dbc814caac8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:15:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:14,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 17:15:14,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:14,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-13 17:15:14,751 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 17:15:14,824 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:15:14,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:15:14,872 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 17:15:14,926 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:15:14,926 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 11 treesize of output 11 [2022-12-13 17:15:14,971 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 17:15:15,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:15:15,015 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 17:15:15,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:15:15,068 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 17:15:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:15:15,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:15,207 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_568 (Array Int Int)) (v_ArrVal_567 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_567) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_568) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset))))) is different from false [2022-12-13 17:15:17,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:15:17,456 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 37 treesize of output 38 [2022-12-13 17:15:17,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:15:17,483 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 21635 treesize of output 21127 [2022-12-13 17:15:17,571 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 21110 treesize of output 18038 [2022-12-13 17:15:17,657 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 18038 treesize of output 17654 [2022-12-13 17:15:17,744 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 17654 treesize of output 16118 [2022-12-13 17:15:17,839 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 16118 treesize of output 15350