./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN --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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- 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-6b4ec56 [2022-11-20 11:29:43,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:29:43,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:29:43,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:29:43,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:29:43,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:29:43,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:29:43,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:29:43,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:29:43,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:29:43,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:29:43,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:29:43,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:29:43,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:29:43,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:29:43,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:29:43,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:29:43,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:29:43,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:29:43,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:29:43,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:29:43,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:29:43,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:29:43,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:29:43,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:29:43,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:29:43,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:29:43,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:29:43,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:29:43,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:29:43,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:29:43,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:29:43,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:29:43,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:29:43,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:29:43,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:29:43,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:29:43,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:29:43,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:29:43,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:29:43,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:29:43,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:29:43,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:29:43,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:29:43,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:29:43,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:29:43,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:29:43,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:29:43,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:29:43,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:29:43,419 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:29:43,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:29:43,421 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:29:43,421 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:29:43,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:29:43,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:29:43,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:29:43,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:29:43,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:29:43,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:29:43,423 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:29:43,423 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:29:43,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:29:43,424 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:29:43,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:29:43,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:29:43,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:29:43,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:29:43,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:29:43,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:29:43,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:29:43,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:29:43,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:29:43,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:29:43,429 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:29:43,429 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:29:43,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:29:43,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2022-11-20 11:29:43,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:29:43,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:29:43,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:29:43,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:29:43,765 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:29:43,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 11:29:47,089 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:29:47,381 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:29:47,382 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 11:29:47,397 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/data/37a9cd6a0/5f047c0464bf4be79d73a6337054b879/FLAG966d12dc4 [2022-11-20 11:29:47,418 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/data/37a9cd6a0/5f047c0464bf4be79d73a6337054b879 [2022-11-20 11:29:47,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:29:47,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:29:47,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:47,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:29:47,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:29:47,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:47,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796cd196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47, skipping insertion in model container [2022-11-20 11:29:47,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:47,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:29:47,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:29:47,643 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_db7cb890-87dd-452e-962d-2f1570feff46/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-20 11:29:47,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:47,861 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:29:47,881 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_db7cb890-87dd-452e-962d-2f1570feff46/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-20 11:29:47,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:47,956 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:29:47,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47 WrapperNode [2022-11-20 11:29:47,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:47,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:29:47,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:29:47,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:29:47,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:47,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,033 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-20 11:29:48,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:29:48,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:29:48,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:29:48,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:29:48,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,084 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:29:48,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:29:48,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:29:48,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:29:48,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (1/1) ... [2022-11-20 11:29:48,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:29:48,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:48,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:29:48,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:29:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-20 11:29:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-20 11:29:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:29:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:29:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:29:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:29:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:29:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:29:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:29:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:29:48,198 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:29:48,336 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:29:48,339 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:29:48,727 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:29:48,735 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:29:48,735 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:29:48,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:29:48 BoogieIcfgContainer [2022-11-20 11:29:48,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:29:48,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:29:48,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:29:48,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:29:48,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:29:47" (1/3) ... [2022-11-20 11:29:48,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59497478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:29:48, skipping insertion in model container [2022-11-20 11:29:48,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:47" (2/3) ... [2022-11-20 11:29:48,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59497478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:29:48, skipping insertion in model container [2022-11-20 11:29:48,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:29:48" (3/3) ... [2022-11-20 11:29:48,747 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 11:29:48,757 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:29:48,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:29:48,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 11:29:48,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:29:48,877 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:29:48,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 259 flow [2022-11-20 11:29:49,079 INFO L130 PetriNetUnfolder]: 10/126 cut-off events. [2022-11-20 11:29:49,081 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:29:49,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 126 events. 10/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-20 11:29:49,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 127 transitions, 259 flow [2022-11-20 11:29:49,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 126 transitions, 255 flow [2022-11-20 11:29:49,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:29:49,134 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;@503a0f10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:29:49,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-20 11:29:49,158 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-20 11:29:49,158 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:29:49,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:49,159 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:49,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:49,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:49,166 INFO L85 PathProgramCache]: Analyzing trace with hash 118733176, now seen corresponding path program 1 times [2022-11-20 11:29:49,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:49,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407369706] [2022-11-20 11:29:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:49,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:49,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407369706] [2022-11-20 11:29:49,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407369706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:49,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:49,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:49,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691430903] [2022-11-20 11:29:49,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:49,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:29:49,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:49,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:29:49,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:29:49,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 11:29:49,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:49,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:49,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 11:29:49,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:50,175 INFO L130 PetriNetUnfolder]: 127/500 cut-off events. [2022-11-20 11:29:50,177 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:29:50,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 500 events. 127/500 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2377 event pairs, 44 based on Foata normal form. 51/450 useless extension candidates. Maximal degree in co-relation 692. Up to 190 conditions per place. [2022-11-20 11:29:50,189 INFO L137 encePairwiseOnDemand]: 113/127 looper letters, 36 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2022-11-20 11:29:50,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 135 transitions, 353 flow [2022-11-20 11:29:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:29:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:29:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-11-20 11:29:50,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2022-11-20 11:29:50,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-11-20 11:29:50,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-11-20 11:29:50,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:50,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-11-20 11:29:50,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,249 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,251 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 255 flow. Second operand 5 states and 555 transitions. [2022-11-20 11:29:50,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 135 transitions, 353 flow [2022-11-20 11:29:50,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:29:50,263 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 270 flow [2022-11-20 11:29:50,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2022-11-20 11:29:50,274 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2022-11-20 11:29:50,274 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 270 flow [2022-11-20 11:29:50,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:50,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:50,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:29:50,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash -66083864, now seen corresponding path program 1 times [2022-11-20 11:29:50,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:50,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852620516] [2022-11-20 11:29:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:50,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:50,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:50,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852620516] [2022-11-20 11:29:50,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852620516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:50,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:50,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019606716] [2022-11-20 11:29:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:50,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:29:50,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:50,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:29:50,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:29:50,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-20 11:29:50,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:50,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-20 11:29:50,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:50,781 INFO L130 PetriNetUnfolder]: 24/333 cut-off events. [2022-11-20 11:29:50,787 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-20 11:29:50,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 333 events. 24/333 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1033 event pairs, 5 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 354. Up to 20 conditions per place. [2022-11-20 11:29:50,794 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 15 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2022-11-20 11:29:50,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 322 flow [2022-11-20 11:29:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:29:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:29:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-11-20 11:29:50,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755905511811024 [2022-11-20 11:29:50,798 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-11-20 11:29:50,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-11-20 11:29:50,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:50,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-11-20 11:29:50,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,804 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,804 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 270 flow. Second operand 5 states and 556 transitions. [2022-11-20 11:29:50,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 322 flow [2022-11-20 11:29:50,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 126 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:29:50,819 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 298 flow [2022-11-20 11:29:50,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-11-20 11:29:50,821 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 7 predicate places. [2022-11-20 11:29:50,821 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 298 flow [2022-11-20 11:29:50,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:50,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:50,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:29:50,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:50,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash 812908136, now seen corresponding path program 1 times [2022-11-20 11:29:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:50,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467964301] [2022-11-20 11:29:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:51,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:51,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467964301] [2022-11-20 11:29:51,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467964301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:51,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:51,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:51,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768723523] [2022-11-20 11:29:51,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:51,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:51,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:51,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:51,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2022-11-20 11:29:51,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:51,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2022-11-20 11:29:51,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:51,095 INFO L130 PetriNetUnfolder]: 11/215 cut-off events. [2022-11-20 11:29:51,095 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 11:29:51,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 215 events. 11/215 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 446 event pairs, 1 based on Foata normal form. 5/207 useless extension candidates. Maximal degree in co-relation 226. Up to 16 conditions per place. [2022-11-20 11:29:51,098 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 8 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2022-11-20 11:29:51,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 324 flow [2022-11-20 11:29:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:29:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2022-11-20 11:29:51,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2022-11-20 11:29:51,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2022-11-20 11:29:51,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2022-11-20 11:29:51,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:51,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2022-11-20 11:29:51,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,105 INFO L175 Difference]: Start difference. First operand has 127 places, 122 transitions, 298 flow. Second operand 3 states and 333 transitions. [2022-11-20 11:29:51,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 324 flow [2022-11-20 11:29:51,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 122 transitions, 320 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-20 11:29:51,110 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 304 flow [2022-11-20 11:29:51,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2022-11-20 11:29:51,112 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 8 predicate places. [2022-11-20 11:29:51,112 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 304 flow [2022-11-20 11:29:51,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:51,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:51,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:29:51,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash -101091001, now seen corresponding path program 1 times [2022-11-20 11:29:51,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:51,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272328150] [2022-11-20 11:29:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:51,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:51,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:51,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272328150] [2022-11-20 11:29:51,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272328150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:51,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:51,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:29:51,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164679897] [2022-11-20 11:29:51,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:51,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:29:51,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:51,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:29:51,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:29:51,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-20 11:29:51,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:51,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-20 11:29:51,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:51,554 INFO L130 PetriNetUnfolder]: 98/502 cut-off events. [2022-11-20 11:29:51,554 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-20 11:29:51,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 502 events. 98/502 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2262 event pairs, 20 based on Foata normal form. 3/457 useless extension candidates. Maximal degree in co-relation 774. Up to 81 conditions per place. [2022-11-20 11:29:51,558 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 51 selfloop transitions, 10 changer transitions 0/153 dead transitions. [2022-11-20 11:29:51,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 153 transitions, 498 flow [2022-11-20 11:29:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:29:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:29:51,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions. [2022-11-20 11:29:51,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864173228346457 [2022-11-20 11:29:51,562 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions. [2022-11-20 11:29:51,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions. [2022-11-20 11:29:51,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:51,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions. [2022-11-20 11:29:51,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,568 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,568 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 304 flow. Second operand 8 states and 799 transitions. [2022-11-20 11:29:51,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 153 transitions, 498 flow [2022-11-20 11:29:51,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 153 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:29:51,574 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 362 flow [2022-11-20 11:29:51,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2022-11-20 11:29:51,575 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2022-11-20 11:29:51,575 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 362 flow [2022-11-20 11:29:51,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:51,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:51,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:29:51,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:51,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2015844594, now seen corresponding path program 1 times [2022-11-20 11:29:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:51,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300393543] [2022-11-20 11:29:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:51,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:51,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:51,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300393543] [2022-11-20 11:29:51,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300393543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:51,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:51,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:51,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627256022] [2022-11-20 11:29:51,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:51,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:29:51,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:51,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:29:51,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:29:51,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 11:29:51,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:51,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 11:29:51,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:51,812 INFO L130 PetriNetUnfolder]: 36/474 cut-off events. [2022-11-20 11:29:51,812 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-11-20 11:29:51,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 474 events. 36/474 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1575 event pairs, 8 based on Foata normal form. 7/465 useless extension candidates. Maximal degree in co-relation 682. Up to 57 conditions per place. [2022-11-20 11:29:51,816 INFO L137 encePairwiseOnDemand]: 118/127 looper letters, 23 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2022-11-20 11:29:51,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 426 flow [2022-11-20 11:29:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:29:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:29:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-20 11:29:51,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815748031496063 [2022-11-20 11:29:51,818 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-20 11:29:51,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-20 11:29:51,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:51,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-20 11:29:51,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,823 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,823 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 362 flow. Second operand 5 states and 518 transitions. [2022-11-20 11:29:51,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 426 flow [2022-11-20 11:29:51,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:29:51,828 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 384 flow [2022-11-20 11:29:51,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-11-20 11:29:51,829 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2022-11-20 11:29:51,829 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 384 flow [2022-11-20 11:29:51,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:51,830 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:51,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:29:51,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:51,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1372599684, now seen corresponding path program 1 times [2022-11-20 11:29:51,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:51,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915918735] [2022-11-20 11:29:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:51,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:29:51,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:51,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915918735] [2022-11-20 11:29:51,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915918735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:51,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:51,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194519135] [2022-11-20 11:29:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:29:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:51,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:29:51,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:29:51,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 11:29:51,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:51,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:51,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 11:29:51,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:52,078 INFO L130 PetriNetUnfolder]: 53/474 cut-off events. [2022-11-20 11:29:52,078 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-11-20 11:29:52,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 474 events. 53/474 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1753 event pairs, 17 based on Foata normal form. 6/454 useless extension candidates. Maximal degree in co-relation 768. Up to 59 conditions per place. [2022-11-20 11:29:52,083 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 23 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2022-11-20 11:29:52,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 133 transitions, 485 flow [2022-11-20 11:29:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:29:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:29:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-20 11:29:52,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815748031496063 [2022-11-20 11:29:52,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-20 11:29:52,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-20 11:29:52,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:52,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-20 11:29:52,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,093 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,093 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 384 flow. Second operand 5 states and 518 transitions. [2022-11-20 11:29:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 133 transitions, 485 flow [2022-11-20 11:29:52,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:29:52,102 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 428 flow [2022-11-20 11:29:52,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2022-11-20 11:29:52,105 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 20 predicate places. [2022-11-20 11:29:52,105 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 428 flow [2022-11-20 11:29:52,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:52,106 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:52,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:29:52,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:52,107 INFO L85 PathProgramCache]: Analyzing trace with hash -399082489, now seen corresponding path program 1 times [2022-11-20 11:29:52,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:52,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99702622] [2022-11-20 11:29:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:52,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:52,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:52,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99702622] [2022-11-20 11:29:52,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99702622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:52,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653578278] [2022-11-20 11:29:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:52,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:52,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:52,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:52,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:29:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:52,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:29:52,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:52,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:52,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653578278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:52,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:29:52,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:29:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923333991] [2022-11-20 11:29:52,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:29:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:29:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:29:52,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 11:29:52,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:52,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 11:29:52,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:52,852 INFO L130 PetriNetUnfolder]: 55/521 cut-off events. [2022-11-20 11:29:52,852 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-11-20 11:29:52,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 521 events. 55/521 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1765 event pairs, 14 based on Foata normal form. 9/503 useless extension candidates. Maximal degree in co-relation 893. Up to 76 conditions per place. [2022-11-20 11:29:52,858 INFO L137 encePairwiseOnDemand]: 118/127 looper letters, 34 selfloop transitions, 10 changer transitions 2/143 dead transitions. [2022-11-20 11:29:52,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 143 transitions, 598 flow [2022-11-20 11:29:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:29:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:29:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2022-11-20 11:29:52,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8155230596175478 [2022-11-20 11:29:52,861 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2022-11-20 11:29:52,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2022-11-20 11:29:52,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:52,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2022-11-20 11:29:52,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,867 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 428 flow. Second operand 7 states and 725 transitions. [2022-11-20 11:29:52,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 143 transitions, 598 flow [2022-11-20 11:29:52,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 578 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-20 11:29:52,873 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 492 flow [2022-11-20 11:29:52,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2022-11-20 11:29:52,874 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2022-11-20 11:29:52,874 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 492 flow [2022-11-20 11:29:52,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:52,875 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:52,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:53,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:29:53,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:53,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1279354972, now seen corresponding path program 1 times [2022-11-20 11:29:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:53,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528985364] [2022-11-20 11:29:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:53,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:53,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528985364] [2022-11-20 11:29:53,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528985364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738133107] [2022-11-20 11:29:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:53,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:53,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:53,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:53,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:29:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:53,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:29:53,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:53,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:53,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738133107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:53,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:29:53,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:29:53,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91410792] [2022-11-20 11:29:53,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:53,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:29:53,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:29:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:29:53,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-20 11:29:53,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 492 flow. Second operand has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:53,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:53,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-20 11:29:53,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:54,079 INFO L130 PetriNetUnfolder]: 47/884 cut-off events. [2022-11-20 11:29:54,080 INFO L131 PetriNetUnfolder]: For 669/669 co-relation queries the response was YES. [2022-11-20 11:29:54,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 884 events. 47/884 cut-off events. For 669/669 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3683 event pairs, 0 based on Foata normal form. 9/862 useless extension candidates. Maximal degree in co-relation 1550. Up to 51 conditions per place. [2022-11-20 11:29:54,089 INFO L137 encePairwiseOnDemand]: 120/127 looper letters, 23 selfloop transitions, 18 changer transitions 1/159 dead transitions. [2022-11-20 11:29:54,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 159 transitions, 652 flow [2022-11-20 11:29:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:29:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:29:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1971 transitions. [2022-11-20 11:29:54,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8622047244094488 [2022-11-20 11:29:54,096 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1971 transitions. [2022-11-20 11:29:54,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1971 transitions. [2022-11-20 11:29:54,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:54,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1971 transitions. [2022-11-20 11:29:54,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 109.5) internal successors, (1971), 18 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:54,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:54,113 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:54,113 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 492 flow. Second operand 18 states and 1971 transitions. [2022-11-20 11:29:54,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 159 transitions, 652 flow [2022-11-20 11:29:54,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 159 transitions, 644 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-20 11:29:54,123 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 590 flow [2022-11-20 11:29:54,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=590, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2022-11-20 11:29:54,128 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 45 predicate places. [2022-11-20 11:29:54,129 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 590 flow [2022-11-20 11:29:54,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:54,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:54,130 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:54,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:54,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:54,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:54,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:54,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1005298776, now seen corresponding path program 1 times [2022-11-20 11:29:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:54,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065228165] [2022-11-20 11:29:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:54,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065228165] [2022-11-20 11:29:54,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065228165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:54,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256831321] [2022-11-20 11:29:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:54,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:54,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:54,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:54,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:29:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:54,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:29:54,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:54,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:54,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256831321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:54,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:29:54,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:29:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004304796] [2022-11-20 11:29:54,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:54,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:29:54,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:29:54,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:29:54,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-20 11:29:54,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:54,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:54,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-20 11:29:54,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:55,043 INFO L130 PetriNetUnfolder]: 47/871 cut-off events. [2022-11-20 11:29:55,043 INFO L131 PetriNetUnfolder]: For 756/756 co-relation queries the response was YES. [2022-11-20 11:29:55,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 871 events. 47/871 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3573 event pairs, 0 based on Foata normal form. 13/853 useless extension candidates. Maximal degree in co-relation 1582. Up to 56 conditions per place. [2022-11-20 11:29:55,052 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 15 selfloop transitions, 11 changer transitions 1/144 dead transitions. [2022-11-20 11:29:55,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 144 transitions, 627 flow [2022-11-20 11:29:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:29:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:29:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-11-20 11:29:55,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638920134983127 [2022-11-20 11:29:55,056 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-11-20 11:29:55,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-11-20 11:29:55,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:55,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-11-20 11:29:55,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:55,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:55,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:55,062 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 590 flow. Second operand 7 states and 768 transitions. [2022-11-20 11:29:55,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 144 transitions, 627 flow [2022-11-20 11:29:55,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 144 transitions, 595 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 11:29:55,070 INFO L231 Difference]: Finished difference. Result has 161 places, 140 transitions, 553 flow [2022-11-20 11:29:55,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=553, PETRI_PLACES=161, PETRI_TRANSITIONS=140} [2022-11-20 11:29:55,072 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 41 predicate places. [2022-11-20 11:29:55,072 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 140 transitions, 553 flow [2022-11-20 11:29:55,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:55,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:55,073 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:55,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:55,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:29:55,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -800840621, now seen corresponding path program 1 times [2022-11-20 11:29:55,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:55,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585634572] [2022-11-20 11:29:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:55,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:55,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585634572] [2022-11-20 11:29:55,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585634572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:55,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441911551] [2022-11-20 11:29:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:55,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:55,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:55,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:55,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:29:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:55,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:29:55,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:55,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:55,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441911551] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:55,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:29:55,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 11:29:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312616889] [2022-11-20 11:29:55,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:55,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:29:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:29:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:29:55,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-20 11:29:55,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 140 transitions, 553 flow. Second operand has 16 states, 16 states have (on average 95.3125) internal successors, (1525), 16 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:55,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:55,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-20 11:29:55,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:56,632 INFO L130 PetriNetUnfolder]: 268/1599 cut-off events. [2022-11-20 11:29:56,632 INFO L131 PetriNetUnfolder]: For 2060/2060 co-relation queries the response was YES. [2022-11-20 11:29:56,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1599 events. 268/1599 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9829 event pairs, 46 based on Foata normal form. 42/1566 useless extension candidates. Maximal degree in co-relation 3345. Up to 132 conditions per place. [2022-11-20 11:29:56,647 INFO L137 encePairwiseOnDemand]: 114/127 looper letters, 63 selfloop transitions, 34 changer transitions 2/198 dead transitions. [2022-11-20 11:29:56,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 198 transitions, 1013 flow [2022-11-20 11:29:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:29:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:29:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2021 transitions. [2022-11-20 11:29:56,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7577802774653168 [2022-11-20 11:29:56,653 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2021 transitions. [2022-11-20 11:29:56,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2021 transitions. [2022-11-20 11:29:56,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:56,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2021 transitions. [2022-11-20 11:29:56,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.23809523809524) internal successors, (2021), 21 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:56,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 127.0) internal successors, (2794), 22 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:56,666 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 127.0) internal successors, (2794), 22 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:56,666 INFO L175 Difference]: Start difference. First operand has 161 places, 140 transitions, 553 flow. Second operand 21 states and 2021 transitions. [2022-11-20 11:29:56,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 198 transitions, 1013 flow [2022-11-20 11:29:56,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 198 transitions, 978 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-20 11:29:56,677 INFO L231 Difference]: Finished difference. Result has 179 places, 154 transitions, 743 flow [2022-11-20 11:29:56,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=743, PETRI_PLACES=179, PETRI_TRANSITIONS=154} [2022-11-20 11:29:56,679 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 59 predicate places. [2022-11-20 11:29:56,679 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 154 transitions, 743 flow [2022-11-20 11:29:56,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.3125) internal successors, (1525), 16 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:56,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:56,680 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:56,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:56,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:56,886 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1608210795, now seen corresponding path program 1 times [2022-11-20 11:29:56,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:56,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091978570] [2022-11-20 11:29:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:56,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:29:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:56,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091978570] [2022-11-20 11:29:56,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091978570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:56,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:56,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:29:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949282556] [2022-11-20 11:29:56,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:56,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:29:56,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:29:56,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:29:56,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-20 11:29:56,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 154 transitions, 743 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:56,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:56,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-20 11:29:56,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:57,557 INFO L130 PetriNetUnfolder]: 267/1654 cut-off events. [2022-11-20 11:29:57,557 INFO L131 PetriNetUnfolder]: For 3060/3060 co-relation queries the response was YES. [2022-11-20 11:29:57,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1654 events. 267/1654 cut-off events. For 3060/3060 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10323 event pairs, 40 based on Foata normal form. 34/1619 useless extension candidates. Maximal degree in co-relation 3640. Up to 233 conditions per place. [2022-11-20 11:29:57,575 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 37 selfloop transitions, 29 changer transitions 0/165 dead transitions. [2022-11-20 11:29:57,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 926 flow [2022-11-20 11:29:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:29:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:29:57,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 774 transitions. [2022-11-20 11:29:57,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7618110236220472 [2022-11-20 11:29:57,579 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 774 transitions. [2022-11-20 11:29:57,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 774 transitions. [2022-11-20 11:29:57,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:57,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 774 transitions. [2022-11-20 11:29:57,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:57,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:57,584 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:57,584 INFO L175 Difference]: Start difference. First operand has 179 places, 154 transitions, 743 flow. Second operand 8 states and 774 transitions. [2022-11-20 11:29:57,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 926 flow [2022-11-20 11:29:57,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 849 flow, removed 19 selfloop flow, removed 8 redundant places. [2022-11-20 11:29:57,599 INFO L231 Difference]: Finished difference. Result has 177 places, 155 transitions, 788 flow [2022-11-20 11:29:57,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=177, PETRI_TRANSITIONS=155} [2022-11-20 11:29:57,600 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 57 predicate places. [2022-11-20 11:29:57,600 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 155 transitions, 788 flow [2022-11-20 11:29:57,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:57,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:57,601 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:29:57,602 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:57,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1097852462, now seen corresponding path program 1 times [2022-11-20 11:29:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:57,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004032691] [2022-11-20 11:29:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:57,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:29:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:57,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004032691] [2022-11-20 11:29:57,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004032691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:57,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869471324] [2022-11-20 11:29:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:57,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:57,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:57,873 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:57,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:29:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:58,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:29:58,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:29:58,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:29:58,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869471324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:58,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:29:58,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:29:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366136636] [2022-11-20 11:29:58,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:58,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:29:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:29:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:29:58,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 11:29:58,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 155 transitions, 788 flow. Second operand has 18 states, 18 states have (on average 101.38888888888889) internal successors, (1825), 18 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:58,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:58,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 11:29:58,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:59,168 INFO L130 PetriNetUnfolder]: 136/1387 cut-off events. [2022-11-20 11:29:59,169 INFO L131 PetriNetUnfolder]: For 2865/2865 co-relation queries the response was YES. [2022-11-20 11:29:59,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1387 events. 136/1387 cut-off events. For 2865/2865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7774 event pairs, 60 based on Foata normal form. 4/1308 useless extension candidates. Maximal degree in co-relation 3016. Up to 212 conditions per place. [2022-11-20 11:29:59,182 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 81 selfloop transitions, 35 changer transitions 3/224 dead transitions. [2022-11-20 11:29:59,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 224 transitions, 1441 flow [2022-11-20 11:29:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:29:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:29:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2256 transitions. [2022-11-20 11:29:59,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.807444523979957 [2022-11-20 11:29:59,188 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2256 transitions. [2022-11-20 11:29:59,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2256 transitions. [2022-11-20 11:29:59,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:59,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2256 transitions. [2022-11-20 11:29:59,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 102.54545454545455) internal successors, (2256), 22 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:59,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 127.0) internal successors, (2921), 23 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:59,202 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 127.0) internal successors, (2921), 23 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:59,202 INFO L175 Difference]: Start difference. First operand has 177 places, 155 transitions, 788 flow. Second operand 22 states and 2256 transitions. [2022-11-20 11:29:59,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 224 transitions, 1441 flow [2022-11-20 11:29:59,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 224 transitions, 1380 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-20 11:29:59,216 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 1045 flow [2022-11-20 11:29:59,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1045, PETRI_PLACES=200, PETRI_TRANSITIONS=174} [2022-11-20 11:29:59,217 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 80 predicate places. [2022-11-20 11:29:59,217 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 1045 flow [2022-11-20 11:29:59,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.38888888888889) internal successors, (1825), 18 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:59,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:59,218 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:59,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:59,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:29:59,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:29:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash -667910424, now seen corresponding path program 2 times [2022-11-20 11:29:59,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:59,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482794684] [2022-11-20 11:29:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:59,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:59,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:59,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482794684] [2022-11-20 11:29:59,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482794684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:59,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490746153] [2022-11-20 11:29:59,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:29:59,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:59,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:59,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:59,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:29:59,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:29:59,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:59,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:29:59,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:00,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:00,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490746153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:00,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:30:00,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-20 11:30:00,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057643889] [2022-11-20 11:30:00,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:00,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:30:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:30:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:30:00,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-20 11:30:00,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 174 transitions, 1045 flow. Second operand has 24 states, 24 states have (on average 109.66666666666667) internal successors, (2632), 24 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:00,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:00,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-20 11:30:00,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:01,803 INFO L130 PetriNetUnfolder]: 124/2566 cut-off events. [2022-11-20 11:30:01,804 INFO L131 PetriNetUnfolder]: For 5066/5066 co-relation queries the response was YES. [2022-11-20 11:30:01,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 2566 events. 124/2566 cut-off events. For 5066/5066 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 12439 event pairs, 0 based on Foata normal form. 33/2508 useless extension candidates. Maximal degree in co-relation 5425. Up to 117 conditions per place. [2022-11-20 11:30:01,833 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 47 selfloop transitions, 32 changer transitions 1/231 dead transitions. [2022-11-20 11:30:01,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1397 flow [2022-11-20 11:30:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:30:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:30:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3510 transitions. [2022-11-20 11:30:01,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8636811023622047 [2022-11-20 11:30:01,842 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3510 transitions. [2022-11-20 11:30:01,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3510 transitions. [2022-11-20 11:30:01,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:01,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3510 transitions. [2022-11-20 11:30:01,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 109.6875) internal successors, (3510), 32 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:01,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 127.0) internal successors, (4191), 33 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:01,880 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 127.0) internal successors, (4191), 33 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:01,880 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 1045 flow. Second operand 32 states and 3510 transitions. [2022-11-20 11:30:01,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1397 flow [2022-11-20 11:30:01,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 1367 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-20 11:30:01,908 INFO L231 Difference]: Finished difference. Result has 235 places, 193 transitions, 1207 flow [2022-11-20 11:30:01,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1207, PETRI_PLACES=235, PETRI_TRANSITIONS=193} [2022-11-20 11:30:01,910 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 115 predicate places. [2022-11-20 11:30:01,910 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 193 transitions, 1207 flow [2022-11-20 11:30:01,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 109.66666666666667) internal successors, (2632), 24 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:01,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:01,911 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:01,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:02,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:30:02,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:30:02,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:02,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1567588292, now seen corresponding path program 2 times [2022-11-20 11:30:02,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:02,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245837906] [2022-11-20 11:30:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:02,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 455 proven. 532 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:30:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:02,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245837906] [2022-11-20 11:30:02,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245837906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:30:02,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374067138] [2022-11-20 11:30:02,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:30:02,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:02,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:30:02,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:30:02,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:30:03,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:30:03,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:03,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:30:03,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 80 proven. 877 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-20 11:30:03,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 80 proven. 877 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-20 11:30:04,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374067138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:04,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:30:04,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-20 11:30:04,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071448997] [2022-11-20 11:30:04,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:04,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:30:04,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:30:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:30:04,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 11:30:04,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 193 transitions, 1207 flow. Second operand has 34 states, 34 states have (on average 101.5) internal successors, (3451), 34 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:04,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:04,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 11:30:04,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:06,597 INFO L130 PetriNetUnfolder]: 383/3751 cut-off events. [2022-11-20 11:30:06,597 INFO L131 PetriNetUnfolder]: For 9810/9810 co-relation queries the response was YES. [2022-11-20 11:30:06,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8920 conditions, 3751 events. 383/3751 cut-off events. For 9810/9810 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 23391 event pairs, 172 based on Foata normal form. 8/3537 useless extension candidates. Maximal degree in co-relation 8833. Up to 625 conditions per place. [2022-11-20 11:30:06,645 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 145 selfloop transitions, 67 changer transitions 3/339 dead transitions. [2022-11-20 11:30:06,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 339 transitions, 2583 flow [2022-11-20 11:30:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 11:30:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-20 11:30:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4708 transitions. [2022-11-20 11:30:06,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8058883943854844 [2022-11-20 11:30:06,656 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4708 transitions. [2022-11-20 11:30:06,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4708 transitions. [2022-11-20 11:30:06,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:06,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4708 transitions. [2022-11-20 11:30:06,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 102.34782608695652) internal successors, (4708), 46 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:06,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:06,682 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:06,682 INFO L175 Difference]: Start difference. First operand has 235 places, 193 transitions, 1207 flow. Second operand 46 states and 4708 transitions. [2022-11-20 11:30:06,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 339 transitions, 2583 flow [2022-11-20 11:30:06,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 339 transitions, 2545 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-20 11:30:06,724 INFO L231 Difference]: Finished difference. Result has 278 places, 226 transitions, 1770 flow [2022-11-20 11:30:06,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1770, PETRI_PLACES=278, PETRI_TRANSITIONS=226} [2022-11-20 11:30:06,726 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 158 predicate places. [2022-11-20 11:30:06,726 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 226 transitions, 1770 flow [2022-11-20 11:30:06,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 101.5) internal successors, (3451), 34 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:06,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:06,728 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:06,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:06,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:30:06,935 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:30:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1262867040, now seen corresponding path program 1 times [2022-11-20 11:30:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:06,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833361173] [2022-11-20 11:30:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 74 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2022-11-20 11:30:07,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:07,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833361173] [2022-11-20 11:30:07,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833361173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:30:07,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207765331] [2022-11-20 11:30:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:07,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:07,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:30:07,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:30:07,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:30:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:30:07,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 67 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-20 11:30:07,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 67 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-20 11:30:08,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207765331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:08,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:30:08,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2022-11-20 11:30:08,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562365524] [2022-11-20 11:30:08,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:08,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:30:08,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:08,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:30:08,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:30:08,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-20 11:30:08,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 226 transitions, 1770 flow. Second operand has 16 states, 16 states have (on average 96.0625) internal successors, (1537), 16 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:08,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:08,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-20 11:30:08,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:12,648 INFO L130 PetriNetUnfolder]: 1527/9547 cut-off events. [2022-11-20 11:30:12,648 INFO L131 PetriNetUnfolder]: For 29181/29181 co-relation queries the response was YES. [2022-11-20 11:30:12,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23775 conditions, 9547 events. 1527/9547 cut-off events. For 29181/29181 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 81451 event pairs, 445 based on Foata normal form. 81/9023 useless extension candidates. Maximal degree in co-relation 23677. Up to 763 conditions per place. [2022-11-20 11:30:12,755 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 147 selfloop transitions, 73 changer transitions 0/338 dead transitions. [2022-11-20 11:30:12,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 338 transitions, 2932 flow [2022-11-20 11:30:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:30:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 11:30:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2434 transitions. [2022-11-20 11:30:12,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7666141732283465 [2022-11-20 11:30:12,762 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2434 transitions. [2022-11-20 11:30:12,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2434 transitions. [2022-11-20 11:30:12,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:12,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2434 transitions. [2022-11-20 11:30:12,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 97.36) internal successors, (2434), 25 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:12,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 127.0) internal successors, (3302), 26 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:12,776 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 127.0) internal successors, (3302), 26 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:12,777 INFO L175 Difference]: Start difference. First operand has 278 places, 226 transitions, 1770 flow. Second operand 25 states and 2434 transitions. [2022-11-20 11:30:12,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 338 transitions, 2932 flow [2022-11-20 11:30:12,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 338 transitions, 2813 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-11-20 11:30:12,894 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 2278 flow [2022-11-20 11:30:12,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2278, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-11-20 11:30:12,896 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 171 predicate places. [2022-11-20 11:30:12,896 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 2278 flow [2022-11-20 11:30:12,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 96.0625) internal successors, (1537), 16 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:12,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:12,897 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:12,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:13,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:30:13,104 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:30:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1119342665, now seen corresponding path program 2 times [2022-11-20 11:30:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:13,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677185109] [2022-11-20 11:30:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 506 proven. 163 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-20 11:30:13,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:13,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677185109] [2022-11-20 11:30:13,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677185109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:30:13,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627008229] [2022-11-20 11:30:13,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:30:13,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:13,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:30:13,615 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:30:13,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:30:13,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:30:13,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:13,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:30:13,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 170 proven. 421 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-20 11:30:14,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 170 proven. 421 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-20 11:30:14,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627008229] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:14,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:30:14,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-20 11:30:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833337711] [2022-11-20 11:30:14,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:14,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:30:14,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:14,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:30:14,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:30:14,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-20 11:30:14,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 2278 flow. Second operand has 24 states, 24 states have (on average 96.0) internal successors, (2304), 24 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:14,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:14,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-20 11:30:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:21,680 INFO L130 PetriNetUnfolder]: 2447/15886 cut-off events. [2022-11-20 11:30:21,681 INFO L131 PetriNetUnfolder]: For 55876/55876 co-relation queries the response was YES. [2022-11-20 11:30:21,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40960 conditions, 15886 events. 2447/15886 cut-off events. For 55876/55876 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 157784 event pairs, 506 based on Foata normal form. 72/14945 useless extension candidates. Maximal degree in co-relation 40854. Up to 1260 conditions per place. [2022-11-20 11:30:21,875 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 142 selfloop transitions, 155 changer transitions 1/416 dead transitions. [2022-11-20 11:30:21,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 416 transitions, 4082 flow [2022-11-20 11:30:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:30:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:30:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3477 transitions. [2022-11-20 11:30:21,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.760498687664042 [2022-11-20 11:30:21,884 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3477 transitions. [2022-11-20 11:30:21,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3477 transitions. [2022-11-20 11:30:21,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:21,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3477 transitions. [2022-11-20 11:30:21,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 96.58333333333333) internal successors, (3477), 36 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:21,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 127.0) internal successors, (4699), 37 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:21,906 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 127.0) internal successors, (4699), 37 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:21,906 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 2278 flow. Second operand 36 states and 3477 transitions. [2022-11-20 11:30:21,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 416 transitions, 4082 flow [2022-11-20 11:30:22,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 416 transitions, 3991 flow, removed 41 selfloop flow, removed 4 redundant places. [2022-11-20 11:30:22,423 INFO L231 Difference]: Finished difference. Result has 327 places, 306 transitions, 3284 flow [2022-11-20 11:30:22,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3284, PETRI_PLACES=327, PETRI_TRANSITIONS=306} [2022-11-20 11:30:22,424 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 207 predicate places. [2022-11-20 11:30:22,424 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 306 transitions, 3284 flow [2022-11-20 11:30:22,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 96.0) internal successors, (2304), 24 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:22,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:22,426 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:22,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:22,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:30:22,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:30:22,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:22,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1636734505, now seen corresponding path program 3 times [2022-11-20 11:30:22,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:22,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122278298] [2022-11-20 11:30:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:22,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 508 proven. 371 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-20 11:30:23,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:23,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122278298] [2022-11-20 11:30:23,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122278298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:30:23,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319288772] [2022-11-20 11:30:23,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:30:23,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:23,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:30:23,245 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:30:23,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:30:23,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 11:30:23,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:23,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:30:23,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 80 proven. 752 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-20 11:30:24,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 80 proven. 752 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-20 11:30:24,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319288772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:24,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:30:24,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 28 [2022-11-20 11:30:24,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524149304] [2022-11-20 11:30:24,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:24,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:30:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:30:24,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:30:24,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-20 11:30:24,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 306 transitions, 3284 flow. Second operand has 28 states, 28 states have (on average 95.92857142857143) internal successors, (2686), 28 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:24,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:24,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-20 11:30:24,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:33,605 INFO L130 PetriNetUnfolder]: 3022/19333 cut-off events. [2022-11-20 11:30:33,605 INFO L131 PetriNetUnfolder]: For 80168/80168 co-relation queries the response was YES. [2022-11-20 11:30:33,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52514 conditions, 19333 events. 3022/19333 cut-off events. For 80168/80168 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 204824 event pairs, 833 based on Foata normal form. 54/18111 useless extension candidates. Maximal degree in co-relation 52403. Up to 1560 conditions per place. [2022-11-20 11:30:33,893 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 237 selfloop transitions, 166 changer transitions 0/521 dead transitions. [2022-11-20 11:30:33,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 521 transitions, 5747 flow [2022-11-20 11:30:33,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 11:30:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-20 11:30:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4472 transitions. [2022-11-20 11:30:33,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.765491270112975 [2022-11-20 11:30:33,902 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4472 transitions. [2022-11-20 11:30:33,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4472 transitions. [2022-11-20 11:30:33,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:33,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4472 transitions. [2022-11-20 11:30:33,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 97.21739130434783) internal successors, (4472), 46 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:33,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:33,931 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:33,931 INFO L175 Difference]: Start difference. First operand has 327 places, 306 transitions, 3284 flow. Second operand 46 states and 4472 transitions. [2022-11-20 11:30:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 521 transitions, 5747 flow [2022-11-20 11:30:34,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 521 transitions, 5669 flow, removed 25 selfloop flow, removed 11 redundant places. [2022-11-20 11:30:34,292 INFO L231 Difference]: Finished difference. Result has 370 places, 343 transitions, 4321 flow [2022-11-20 11:30:34,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4321, PETRI_PLACES=370, PETRI_TRANSITIONS=343} [2022-11-20 11:30:34,294 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 250 predicate places. [2022-11-20 11:30:34,295 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 343 transitions, 4321 flow [2022-11-20 11:30:34,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 95.92857142857143) internal successors, (2686), 28 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:34,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:34,296 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:34,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-20 11:30:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:30:34,503 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:30:34,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash 641505128, now seen corresponding path program 3 times [2022-11-20 11:30:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:34,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99368538] [2022-11-20 11:30:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:35,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:35,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99368538] [2022-11-20 11:30:35,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99368538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:30:35,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450433181] [2022-11-20 11:30:35,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:30:35,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:35,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:30:35,507 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:30:35,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:30:35,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 11:30:35,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:35,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:30:35,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:36,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:37,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450433181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:37,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:30:37,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-11-20 11:30:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373343861] [2022-11-20 11:30:37,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:37,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 11:30:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:37,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 11:30:37,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 11:30:37,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-20 11:30:37,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 343 transitions, 4321 flow. Second operand has 48 states, 48 states have (on average 109.83333333333333) internal successors, (5272), 48 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:37,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:37,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-20 11:30:37,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:53,886 INFO L130 PetriNetUnfolder]: 775/23917 cut-off events. [2022-11-20 11:30:53,887 INFO L131 PetriNetUnfolder]: For 123448/123448 co-relation queries the response was YES. [2022-11-20 11:30:54,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64777 conditions, 23917 events. 775/23917 cut-off events. For 123448/123448 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 204707 event pairs, 0 based on Foata normal form. 283/23237 useless extension candidates. Maximal degree in co-relation 64659. Up to 1159 conditions per place. [2022-11-20 11:30:54,182 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 94 selfloop transitions, 68 changer transitions 2/465 dead transitions. [2022-11-20 11:30:54,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 465 transitions, 5140 flow [2022-11-20 11:30:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-20 11:30:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-11-20 11:30:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 7452 transitions. [2022-11-20 11:30:54,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8628994905048634 [2022-11-20 11:30:54,194 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 7452 transitions. [2022-11-20 11:30:54,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 7452 transitions. [2022-11-20 11:30:54,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:54,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 7452 transitions. [2022-11-20 11:30:54,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 109.58823529411765) internal successors, (7452), 68 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:54,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 127.0) internal successors, (8763), 69 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:54,227 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 127.0) internal successors, (8763), 69 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:54,228 INFO L175 Difference]: Start difference. First operand has 370 places, 343 transitions, 4321 flow. Second operand 68 states and 7452 transitions. [2022-11-20 11:30:54,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 465 transitions, 5140 flow [2022-11-20 11:30:54,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 465 transitions, 5031 flow, removed 26 selfloop flow, removed 14 redundant places. [2022-11-20 11:30:54,830 INFO L231 Difference]: Finished difference. Result has 436 places, 380 transitions, 4629 flow [2022-11-20 11:30:54,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=4212, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=4629, PETRI_PLACES=436, PETRI_TRANSITIONS=380} [2022-11-20 11:30:54,831 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 316 predicate places. [2022-11-20 11:30:54,831 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 380 transitions, 4629 flow [2022-11-20 11:30:54,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 109.83333333333333) internal successors, (5272), 48 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:54,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:54,833 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 15, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:54,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:55,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:30:55,039 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-20 11:30:55,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:55,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1622554033, now seen corresponding path program 4 times [2022-11-20 11:30:55,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:55,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115478343] [2022-11-20 11:30:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:55,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2178 proven. 677 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2022-11-20 11:30:56,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:56,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115478343] [2022-11-20 11:30:56,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115478343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:30:56,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629380340] [2022-11-20 11:30:56,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:30:56,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:56,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:30:56,144 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:30:56,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7cb890-87dd-452e-962d-2f1570feff46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:30:56,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:30:56,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:56,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:30:56,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2269 proven. 799 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-20 11:30:57,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2269 proven. 799 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-20 11:30:57,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629380340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:57,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:30:57,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2022-11-20 11:30:57,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337386161] [2022-11-20 11:30:57,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:57,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:30:57,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:30:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:30:57,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-20 11:30:57,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 380 transitions, 4629 flow. Second operand has 36 states, 36 states have (on average 95.80555555555556) internal successors, (3449), 36 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:57,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:57,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-20 11:30:57,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand