./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-12.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_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/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_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/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_e4acc03a-df78-495b-bca9-8060c47c46b8/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 a5c5d988dfb4f4b1be585294c8ab62a2f94aeccbe1abf374969f6d5f0322e73d --- 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 09:27:51,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:51,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:51,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:51,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:51,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:51,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:51,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:51,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:51,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:51,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:51,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:51,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:51,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:51,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:51,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:51,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:51,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:51,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:51,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:51,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:51,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:51,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:51,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:51,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:51,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:51,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:51,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:51,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:51,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:51,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:51,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:51,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:51,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:51,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:51,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:51,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:51,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:51,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:51,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:51,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:51,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:27:51,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:51,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:51,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:51,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:51,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:51,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:51,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:51,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:51,555 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:51,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:51,557 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:51,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:27:51,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:51,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:51,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:51,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:51,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:51,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:51,559 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:27:51,560 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:51,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:51,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:51,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:51,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:51,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:51,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:51,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:51,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:51,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:51,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:51,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:51,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:51,565 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:51,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:51,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:51,566 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_e4acc03a-df78-495b-bca9-8060c47c46b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5c5d988dfb4f4b1be585294c8ab62a2f94aeccbe1abf374969f6d5f0322e73d [2022-11-20 09:27:51,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:51,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:51,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:51,901 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:51,901 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:51,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/fib_unsafe-12.i [2022-11-20 09:27:55,052 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:55,359 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:55,360 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/sv-benchmarks/c/pthread/fib_unsafe-12.i [2022-11-20 09:27:55,376 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/data/be3048144/f2fa6607174f40c9ab94ddfe25465961/FLAG6e5ae1d29 [2022-11-20 09:27:55,395 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/data/be3048144/f2fa6607174f40c9ab94ddfe25465961 [2022-11-20 09:27:55,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:55,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:55,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:55,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:55,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:55,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5592826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55, skipping insertion in model container [2022-11-20 09:27:55,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:55,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:56,053 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_e4acc03a-df78-495b-bca9-8060c47c46b8/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2022-11-20 09:27:56,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:56,103 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:56,164 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_e4acc03a-df78-495b-bca9-8060c47c46b8/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2022-11-20 09:27:56,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:56,212 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:56,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56 WrapperNode [2022-11-20 09:27:56,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:56,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:56,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:56,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:56,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,277 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-20 09:27:56,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:56,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:56,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:56,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:56,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,341 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:56,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:56,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:56,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:56,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:56,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:56,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:56,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 09:27:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 09:27:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 09:27:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 09:27:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 09:27:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 09:27:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:56,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:56,457 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 09:27:56,602 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:56,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:56,858 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:56,890 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:56,890 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 09:27:56,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:56 BoogieIcfgContainer [2022-11-20 09:27:56,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:56,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:56,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:56,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:56,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:55" (1/3) ... [2022-11-20 09:27:56,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d43b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:56, skipping insertion in model container [2022-11-20 09:27:56,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56" (2/3) ... [2022-11-20 09:27:56,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d43b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:56, skipping insertion in model container [2022-11-20 09:27:56,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:56" (3/3) ... [2022-11-20 09:27:56,902 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-12.i [2022-11-20 09:27:56,911 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:27:56,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:56,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 09:27:56,922 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:27:57,033 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:27:57,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-20 09:27:57,182 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-20 09:27:57,183 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:57,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-20 09:27:57,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-20 09:27:57,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-20 09:27:57,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:57,232 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;@49169577, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:57,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 09:27:57,261 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-20 09:27:57,265 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:57,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:57,266 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] [2022-11-20 09:27:57,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:27:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash 112959114, now seen corresponding path program 1 times [2022-11-20 09:27:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:57,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905387476] [2022-11-20 09:27:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,710 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 09:27:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:57,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905387476] [2022-11-20 09:27:57,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905387476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:57,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:57,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:57,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604288702] [2022-11-20 09:27:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:57,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:57,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:57,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 09:27:57,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 09:27:57,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:57,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 09:27:57,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:58,001 INFO L130 PetriNetUnfolder]: 81/446 cut-off events. [2022-11-20 09:27:58,001 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 09:27:58,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 446 events. 81/446 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2407 event pairs, 33 based on Foata normal form. 57/372 useless extension candidates. Maximal degree in co-relation 544. Up to 81 conditions per place. [2022-11-20 09:27:58,010 INFO L137 encePairwiseOnDemand]: 108/120 looper letters, 19 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-20 09:27:58,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 305 flow [2022-11-20 09:27:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:27:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:27:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-11-20 09:27:58,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-20 09:27:58,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-11-20 09:27:58,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-11-20 09:27:58,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:58,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-11-20 09:27:58,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 09:27:58,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 09:27:58,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 09:27:58,043 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 242 flow. Second operand 4 states and 448 transitions. [2022-11-20 09:27:58,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 305 flow [2022-11-20 09:27:58,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:27:58,051 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 261 flow [2022-11-20 09:27:58,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2022-11-20 09:27:58,057 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-11-20 09:27:58,057 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 261 flow [2022-11-20 09:27:58,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 09:27:58,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:58,058 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] [2022-11-20 09:27:58,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:58,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:27:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1179537421, now seen corresponding path program 1 times [2022-11-20 09:27:58,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:58,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607414441] [2022-11-20 09:27:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:58,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,217 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 09:27:58,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:58,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607414441] [2022-11-20 09:27:58,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607414441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:58,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:58,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:58,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532186747] [2022-11-20 09:27:58,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:58,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:58,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:58,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:27:58,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 261 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 09:27:58,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:58,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:27:58,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:58,355 INFO L130 PetriNetUnfolder]: 109/314 cut-off events. [2022-11-20 09:27:58,355 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-11-20 09:27:58,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 314 events. 109/314 cut-off events. For 40/59 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1518 event pairs, 13 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 620. Up to 109 conditions per place. [2022-11-20 09:27:58,365 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 32 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2022-11-20 09:27:58,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 385 flow [2022-11-20 09:27:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2022-11-20 09:27:58,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783333333333333 [2022-11-20 09:27:58,388 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2022-11-20 09:27:58,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2022-11-20 09:27:58,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:58,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2022-11-20 09:27:58,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 09:27:58,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:27:58,393 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:27:58,393 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 261 flow. Second operand 5 states and 527 transitions. [2022-11-20 09:27:58,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 385 flow [2022-11-20 09:27:58,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:27:58,397 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 293 flow [2022-11-20 09:27:58,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=119, 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=293, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2022-11-20 09:27:58,398 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2022-11-20 09:27:58,398 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 293 flow [2022-11-20 09:27:58,399 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 09:27:58,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:58,399 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:27:58,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:58,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:27:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash 652098173, now seen corresponding path program 1 times [2022-11-20 09:27:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:58,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372244949] [2022-11-20 09:27:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:58,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:58,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:58,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372244949] [2022-11-20 09:27:58,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372244949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:58,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134944546] [2022-11-20 09:27:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:58,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:58,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:58,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:58,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:27:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:27:58,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:58,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:58,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134944546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:58,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:58,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-20 09:27:58,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656361418] [2022-11-20 09:27:58,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:58,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:27:58,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:58,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:27:58,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:58,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 09:27:58,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 293 flow. Second operand has 11 states, 11 states have (on average 103.54545454545455) internal successors, (1139), 11 states have internal predecessors, (1139), 0 states have call successors, (0), 0 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 09:27:58,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:58,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 09:27:58,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:59,399 INFO L130 PetriNetUnfolder]: 235/1253 cut-off events. [2022-11-20 09:27:59,399 INFO L131 PetriNetUnfolder]: For 156/169 co-relation queries the response was YES. [2022-11-20 09:27:59,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 1253 events. 235/1253 cut-off events. For 156/169 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9649 event pairs, 23 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2072. Up to 245 conditions per place. [2022-11-20 09:27:59,416 INFO L137 encePairwiseOnDemand]: 110/120 looper letters, 48 selfloop transitions, 41 changer transitions 0/192 dead transitions. [2022-11-20 09:27:59,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 192 transitions, 731 flow [2022-11-20 09:27:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:27:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 09:27:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1944 transitions. [2022-11-20 09:27:59,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-20 09:27:59,421 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1944 transitions. [2022-11-20 09:27:59,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1944 transitions. [2022-11-20 09:27:59,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:59,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1944 transitions. [2022-11-20 09:27:59,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 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 09:27:59,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 120.0) internal successors, (2280), 19 states have internal predecessors, (2280), 0 states have call successors, (0), 0 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 09:27:59,433 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 120.0) internal successors, (2280), 19 states have internal predecessors, (2280), 0 states have call successors, (0), 0 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 09:27:59,434 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 293 flow. Second operand 18 states and 1944 transitions. [2022-11-20 09:27:59,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 192 transitions, 731 flow [2022-11-20 09:27:59,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:59,440 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 685 flow [2022-11-20 09:27:59,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=685, PETRI_PLACES=157, PETRI_TRANSITIONS=160} [2022-11-20 09:27:59,441 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-20 09:27:59,441 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 685 flow [2022-11-20 09:27:59,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 103.54545454545455) internal successors, (1139), 11 states have internal predecessors, (1139), 0 states have call successors, (0), 0 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 09:27:59,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:59,442 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:27:59,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:59,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:59,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:27:59,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash 652098174, now seen corresponding path program 1 times [2022-11-20 09:27:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:59,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198874085] [2022-11-20 09:27:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:59,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:59,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198874085] [2022-11-20 09:27:59,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198874085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:59,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493105693] [2022-11-20 09:27:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:59,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:59,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:59,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:59,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:27:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:59,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:27:59,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:00,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:00,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493105693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:00,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:00,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-20 09:28:00,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994509191] [2022-11-20 09:28:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:00,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:00,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 09:28:00,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 160 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 09:28:00,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:00,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 09:28:00,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:00,224 INFO L130 PetriNetUnfolder]: 113/831 cut-off events. [2022-11-20 09:28:00,224 INFO L131 PetriNetUnfolder]: For 2930/2991 co-relation queries the response was YES. [2022-11-20 09:28:00,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 831 events. 113/831 cut-off events. For 2930/2991 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5767 event pairs, 28 based on Foata normal form. 91/812 useless extension candidates. Maximal degree in co-relation 1826. Up to 99 conditions per place. [2022-11-20 09:28:00,240 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 23 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2022-11-20 09:28:00,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 140 transitions, 618 flow [2022-11-20 09:28:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:28:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 531 transitions. [2022-11-20 09:28:00,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885 [2022-11-20 09:28:00,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 531 transitions. [2022-11-20 09:28:00,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 531 transitions. [2022-11-20 09:28:00,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:00,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 531 transitions. [2022-11-20 09:28:00,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 09:28:00,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:00,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:00,248 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 685 flow. Second operand 5 states and 531 transitions. [2022-11-20 09:28:00,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 140 transitions, 618 flow [2022-11-20 09:28:00,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 140 transitions, 533 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-11-20 09:28:00,268 INFO L231 Difference]: Finished difference. Result has 143 places, 136 transitions, 478 flow [2022-11-20 09:28:00,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=143, PETRI_TRANSITIONS=136} [2022-11-20 09:28:00,270 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 25 predicate places. [2022-11-20 09:28:00,270 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 136 transitions, 478 flow [2022-11-20 09:28:00,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 09:28:00,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:00,271 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] [2022-11-20 09:28:00,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:00,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:00,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash -82011894, now seen corresponding path program 1 times [2022-11-20 09:28:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940182735] [2022-11-20 09:28:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:00,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,596 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 09:28:00,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:00,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940182735] [2022-11-20 09:28:00,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940182735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:00,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:00,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65099650] [2022-11-20 09:28:00,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:00,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:00,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:00,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:00,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:28:00,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 136 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 09:28:00,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:00,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:28:00,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:00,852 INFO L130 PetriNetUnfolder]: 168/711 cut-off events. [2022-11-20 09:28:00,852 INFO L131 PetriNetUnfolder]: For 1690/1794 co-relation queries the response was YES. [2022-11-20 09:28:00,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 711 events. 168/711 cut-off events. For 1690/1794 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4448 event pairs, 36 based on Foata normal form. 18/664 useless extension candidates. Maximal degree in co-relation 1965. Up to 197 conditions per place. [2022-11-20 09:28:00,876 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 62 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2022-11-20 09:28:00,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 165 transitions, 797 flow [2022-11-20 09:28:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:28:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-20 09:28:00,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633333333333333 [2022-11-20 09:28:00,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-20 09:28:00,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-20 09:28:00,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:00,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-20 09:28:00,882 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 09:28:00,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:00,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:00,884 INFO L175 Difference]: Start difference. First operand has 143 places, 136 transitions, 478 flow. Second operand 5 states and 518 transitions. [2022-11-20 09:28:00,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 165 transitions, 797 flow [2022-11-20 09:28:00,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 165 transitions, 794 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:28:00,892 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 507 flow [2022-11-20 09:28:00,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2022-11-20 09:28:00,895 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2022-11-20 09:28:00,895 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 507 flow [2022-11-20 09:28:00,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 09:28:00,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:00,896 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:28:00,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:28:00,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:00,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:00,897 INFO L85 PathProgramCache]: Analyzing trace with hash -398869696, now seen corresponding path program 1 times [2022-11-20 09:28:00,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:00,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539653955] [2022-11-20 09:28:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:00,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:00,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539653955] [2022-11-20 09:28:00,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539653955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:00,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:00,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557031780] [2022-11-20 09:28:00,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:00,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:00,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:00,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:00,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:28:00,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 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 09:28:00,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:00,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:28:00,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:01,175 INFO L130 PetriNetUnfolder]: 184/634 cut-off events. [2022-11-20 09:28:01,175 INFO L131 PetriNetUnfolder]: For 1633/1770 co-relation queries the response was YES. [2022-11-20 09:28:01,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 634 events. 184/634 cut-off events. For 1633/1770 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4045 event pairs, 26 based on Foata normal form. 33/617 useless extension candidates. Maximal degree in co-relation 2000. Up to 138 conditions per place. [2022-11-20 09:28:01,198 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/166 dead transitions. [2022-11-20 09:28:01,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 166 transitions, 855 flow [2022-11-20 09:28:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:28:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2022-11-20 09:28:01,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-11-20 09:28:01,200 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2022-11-20 09:28:01,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2022-11-20 09:28:01,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:01,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2022-11-20 09:28:01,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 09:28:01,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:01,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:01,204 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 507 flow. Second operand 5 states and 512 transitions. [2022-11-20 09:28:01,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 166 transitions, 855 flow [2022-11-20 09:28:01,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 166 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:28:01,212 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 525 flow [2022-11-20 09:28:01,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2022-11-20 09:28:01,216 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 33 predicate places. [2022-11-20 09:28:01,216 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 525 flow [2022-11-20 09:28:01,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 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 09:28:01,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:01,216 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] [2022-11-20 09:28:01,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:28:01,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:01,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1768695099, now seen corresponding path program 1 times [2022-11-20 09:28:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:01,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459355361] [2022-11-20 09:28:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:01,319 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 09:28:01,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:01,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459355361] [2022-11-20 09:28:01,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459355361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:01,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:01,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:01,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066368934] [2022-11-20 09:28:01,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:01,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:01,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:01,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:01,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:01,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 120 [2022-11-20 09:28:01,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 09:28:01,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:01,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 120 [2022-11-20 09:28:01,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:01,829 INFO L130 PetriNetUnfolder]: 713/2625 cut-off events. [2022-11-20 09:28:01,829 INFO L131 PetriNetUnfolder]: For 5825/6193 co-relation queries the response was YES. [2022-11-20 09:28:01,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 2625 events. 713/2625 cut-off events. For 5825/6193 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22638 event pairs, 104 based on Foata normal form. 36/2406 useless extension candidates. Maximal degree in co-relation 7202. Up to 593 conditions per place. [2022-11-20 09:28:01,947 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 86 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-20 09:28:01,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 193 transitions, 1085 flow [2022-11-20 09:28:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2022-11-20 09:28:01,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791666666666667 [2022-11-20 09:28:01,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2022-11-20 09:28:01,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2022-11-20 09:28:01,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:01,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2022-11-20 09:28:01,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 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 09:28:01,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 09:28:01,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 09:28:01,958 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 525 flow. Second operand 4 states and 422 transitions. [2022-11-20 09:28:01,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 193 transitions, 1085 flow [2022-11-20 09:28:01,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 193 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:28:01,972 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 539 flow [2022-11-20 09:28:01,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2022-11-20 09:28:01,973 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 35 predicate places. [2022-11-20 09:28:01,974 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 539 flow [2022-11-20 09:28:01,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 09:28:01,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:01,974 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:28:01,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:28:01,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:01,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash 519941638, now seen corresponding path program 1 times [2022-11-20 09:28:01,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:01,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536878921] [2022-11-20 09:28:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:02,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:02,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536878921] [2022-11-20 09:28:02,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536878921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:02,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038543307] [2022-11-20 09:28:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:02,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:02,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:02,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:28:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:02,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:28:02,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:02,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:02,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038543307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:02,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:02,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:28:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406514576] [2022-11-20 09:28:02,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:02,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:02,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:02,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:02,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:28:02,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 539 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 09:28:02,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:02,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:28:02,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:02,625 INFO L130 PetriNetUnfolder]: 180/725 cut-off events. [2022-11-20 09:28:02,625 INFO L131 PetriNetUnfolder]: For 1792/1908 co-relation queries the response was YES. [2022-11-20 09:28:02,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 725 events. 180/725 cut-off events. For 1792/1908 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4811 event pairs, 30 based on Foata normal form. 23/700 useless extension candidates. Maximal degree in co-relation 2181. Up to 136 conditions per place. [2022-11-20 09:28:02,660 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 62 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-20 09:28:02,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 169 transitions, 883 flow [2022-11-20 09:28:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 715 transitions. [2022-11-20 09:28:02,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-11-20 09:28:02,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 715 transitions. [2022-11-20 09:28:02,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 715 transitions. [2022-11-20 09:28:02,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:02,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 715 transitions. [2022-11-20 09:28:02,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 09:28:02,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 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 09:28:02,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 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 09:28:02,670 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 539 flow. Second operand 7 states and 715 transitions. [2022-11-20 09:28:02,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 169 transitions, 883 flow [2022-11-20 09:28:02,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 169 transitions, 881 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:28:02,680 INFO L231 Difference]: Finished difference. Result has 157 places, 140 transitions, 545 flow [2022-11-20 09:28:02,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=157, PETRI_TRANSITIONS=140} [2022-11-20 09:28:02,683 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-20 09:28:02,684 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 140 transitions, 545 flow [2022-11-20 09:28:02,685 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 09:28:02,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:02,685 INFO L209 CegarLoopForPetriNet]: trace histogram [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 09:28:02,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:02,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 09:28:02,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:02,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:02,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1863821652, now seen corresponding path program 1 times [2022-11-20 09:28:02,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:02,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992238839] [2022-11-20 09:28:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:02,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:02,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:02,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992238839] [2022-11-20 09:28:02,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992238839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:02,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:02,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:02,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589061044] [2022-11-20 09:28:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:02,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:02,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:28:02,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 140 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 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 09:28:02,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:02,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:28:02,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:03,205 INFO L130 PetriNetUnfolder]: 155/639 cut-off events. [2022-11-20 09:28:03,205 INFO L131 PetriNetUnfolder]: For 1661/1773 co-relation queries the response was YES. [2022-11-20 09:28:03,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 639 events. 155/639 cut-off events. For 1661/1773 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3865 event pairs, 25 based on Foata normal form. 31/638 useless extension candidates. Maximal degree in co-relation 1926. Up to 133 conditions per place. [2022-11-20 09:28:03,234 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2022-11-20 09:28:03,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 167 transitions, 884 flow [2022-11-20 09:28:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:03,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:28:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2022-11-20 09:28:03,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8483333333333334 [2022-11-20 09:28:03,237 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2022-11-20 09:28:03,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2022-11-20 09:28:03,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:03,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2022-11-20 09:28:03,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 09:28:03,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:03,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:03,241 INFO L175 Difference]: Start difference. First operand has 157 places, 140 transitions, 545 flow. Second operand 5 states and 509 transitions. [2022-11-20 09:28:03,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 167 transitions, 884 flow [2022-11-20 09:28:03,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 873 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 09:28:03,250 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 554 flow [2022-11-20 09:28:03,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2022-11-20 09:28:03,251 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 38 predicate places. [2022-11-20 09:28:03,252 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 554 flow [2022-11-20 09:28:03,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 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 09:28:03,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:03,253 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:28:03,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:28:03,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1943896707, now seen corresponding path program 1 times [2022-11-20 09:28:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:03,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429411399] [2022-11-20 09:28:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:03,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:03,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429411399] [2022-11-20 09:28:03,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429411399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142326593] [2022-11-20 09:28:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:03,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:03,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:03,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:03,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:28:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:28:03,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:03,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:03,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142326593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:03,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:03,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 09:28:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538582037] [2022-11-20 09:28:03,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:03,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:03,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:03,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:28:03,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:28:03,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 554 flow. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 09:28:03,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:03,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:28:03,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:03,745 INFO L130 PetriNetUnfolder]: 148/585 cut-off events. [2022-11-20 09:28:03,746 INFO L131 PetriNetUnfolder]: For 1504/1605 co-relation queries the response was YES. [2022-11-20 09:28:03,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 585 events. 148/585 cut-off events. For 1504/1605 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3325 event pairs, 29 based on Foata normal form. 23/572 useless extension candidates. Maximal degree in co-relation 1819. Up to 150 conditions per place. [2022-11-20 09:28:03,768 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 43 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2022-11-20 09:28:03,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 715 flow [2022-11-20 09:28:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:03,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2022-11-20 09:28:03,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8479166666666667 [2022-11-20 09:28:03,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2022-11-20 09:28:03,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2022-11-20 09:28:03,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:03,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2022-11-20 09:28:03,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 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 09:28:03,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 09:28:03,773 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 09:28:03,774 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 554 flow. Second operand 4 states and 407 transitions. [2022-11-20 09:28:03,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 715 flow [2022-11-20 09:28:03,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 703 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:28:03,780 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 548 flow [2022-11-20 09:28:03,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-20 09:28:03,782 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 37 predicate places. [2022-11-20 09:28:03,782 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 548 flow [2022-11-20 09:28:03,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 09:28:03,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:03,783 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] [2022-11-20 09:28:03,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:03,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:28:03,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:03,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:03,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1261891889, now seen corresponding path program 1 times [2022-11-20 09:28:03,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:03,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63003152] [2022-11-20 09:28:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:03,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:04,061 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 09:28:04,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:04,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63003152] [2022-11-20 09:28:04,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63003152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:04,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:04,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075221965] [2022-11-20 09:28:04,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:04,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:04,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:04,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 09:28:04,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 09:28:04,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:04,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 09:28:04,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:04,615 INFO L130 PetriNetUnfolder]: 844/2627 cut-off events. [2022-11-20 09:28:04,615 INFO L131 PetriNetUnfolder]: For 6060/6426 co-relation queries the response was YES. [2022-11-20 09:28:04,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 2627 events. 844/2627 cut-off events. For 6060/6426 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21451 event pairs, 86 based on Foata normal form. 12/2393 useless extension candidates. Maximal degree in co-relation 7634. Up to 664 conditions per place. [2022-11-20 09:28:04,656 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 112 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2022-11-20 09:28:04,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 217 transitions, 1344 flow [2022-11-20 09:28:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:28:04,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2022-11-20 09:28:04,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86 [2022-11-20 09:28:04,659 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2022-11-20 09:28:04,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2022-11-20 09:28:04,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:04,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2022-11-20 09:28:04,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 09:28:04,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:04,663 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:04,664 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 548 flow. Second operand 5 states and 516 transitions. [2022-11-20 09:28:04,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 217 transitions, 1344 flow [2022-11-20 09:28:04,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 1334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:28:04,675 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 570 flow [2022-11-20 09:28:04,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=570, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2022-11-20 09:28:04,676 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 41 predicate places. [2022-11-20 09:28:04,676 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 570 flow [2022-11-20 09:28:04,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 09:28:04,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:04,677 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:28:04,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:28:04,677 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:04,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:04,678 INFO L85 PathProgramCache]: Analyzing trace with hash 831417940, now seen corresponding path program 1 times [2022-11-20 09:28:04,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:04,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907230433] [2022-11-20 09:28:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:04,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:04,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907230433] [2022-11-20 09:28:04,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907230433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:04,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873048504] [2022-11-20 09:28:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:04,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:04,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:04,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:04,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:28:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:04,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:28:04,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:05,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:05,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873048504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:05,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:05,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-20 09:28:05,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21052132] [2022-11-20 09:28:05,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:05,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:28:05,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:05,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:28:05,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:05,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:28:05,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 570 flow. Second operand has 17 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 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 09:28:05,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:05,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:28:05,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:06,341 INFO L130 PetriNetUnfolder]: 1218/4514 cut-off events. [2022-11-20 09:28:06,342 INFO L131 PetriNetUnfolder]: For 7970/8507 co-relation queries the response was YES. [2022-11-20 09:28:06,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 4514 events. 1218/4514 cut-off events. For 7970/8507 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 42178 event pairs, 80 based on Foata normal form. 78/4332 useless extension candidates. Maximal degree in co-relation 11661. Up to 690 conditions per place. [2022-11-20 09:28:06,408 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 211 selfloop transitions, 11 changer transitions 0/325 dead transitions. [2022-11-20 09:28:06,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 325 transitions, 2340 flow [2022-11-20 09:28:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:28:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:28:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1126 transitions. [2022-11-20 09:28:06,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.853030303030303 [2022-11-20 09:28:06,412 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1126 transitions. [2022-11-20 09:28:06,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1126 transitions. [2022-11-20 09:28:06,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:06,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1126 transitions. [2022-11-20 09:28:06,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.36363636363636) internal successors, (1126), 11 states have internal predecessors, (1126), 0 states have call successors, (0), 0 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 09:28:06,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 09:28:06,421 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 09:28:06,421 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 570 flow. Second operand 11 states and 1126 transitions. [2022-11-20 09:28:06,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 325 transitions, 2340 flow [2022-11-20 09:28:06,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 325 transitions, 2338 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:28:06,438 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 625 flow [2022-11-20 09:28:06,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=625, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2022-11-20 09:28:06,439 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 54 predicate places. [2022-11-20 09:28:06,439 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 625 flow [2022-11-20 09:28:06,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 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 09:28:06,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:06,441 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:28:06,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:06,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 09:28:06,646 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:06,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:06,647 INFO L85 PathProgramCache]: Analyzing trace with hash 4152592, now seen corresponding path program 1 times [2022-11-20 09:28:06,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:06,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641840318] [2022-11-20 09:28:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:06,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:06,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:06,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641840318] [2022-11-20 09:28:06,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641840318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:06,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612271527] [2022-11-20 09:28:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:06,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:06,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:06,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:06,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:28:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:07,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:28:07,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:07,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:07,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612271527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:07,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:07,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-20 09:28:07,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275242668] [2022-11-20 09:28:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:07,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:07,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:28:07,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:28:07,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 147 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 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 09:28:07,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:07,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:28:07,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:08,234 INFO L130 PetriNetUnfolder]: 1071/4238 cut-off events. [2022-11-20 09:28:08,234 INFO L131 PetriNetUnfolder]: For 7379/7850 co-relation queries the response was YES. [2022-11-20 09:28:08,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 4238 events. 1071/4238 cut-off events. For 7379/7850 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 39183 event pairs, 56 based on Foata normal form. 100/4093 useless extension candidates. Maximal degree in co-relation 11014. Up to 1302 conditions per place. [2022-11-20 09:28:08,302 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 90 selfloop transitions, 4 changer transitions 0/197 dead transitions. [2022-11-20 09:28:08,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 1189 flow [2022-11-20 09:28:08,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:28:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:28:08,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 611 transitions. [2022-11-20 09:28:08,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486111111111111 [2022-11-20 09:28:08,305 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 611 transitions. [2022-11-20 09:28:08,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 611 transitions. [2022-11-20 09:28:08,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:08,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 611 transitions. [2022-11-20 09:28:08,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 0 states have call successors, (0), 0 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 09:28:08,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 09:28:08,309 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 09:28:08,310 INFO L175 Difference]: Start difference. First operand has 172 places, 147 transitions, 625 flow. Second operand 6 states and 611 transitions. [2022-11-20 09:28:08,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 1189 flow [2022-11-20 09:28:08,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 197 transitions, 1173 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 09:28:08,326 INFO L231 Difference]: Finished difference. Result has 173 places, 147 transitions, 623 flow [2022-11-20 09:28:08,326 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2022-11-20 09:28:08,327 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 55 predicate places. [2022-11-20 09:28:08,327 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 623 flow [2022-11-20 09:28:08,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 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 09:28:08,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:08,328 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 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 09:28:08,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 09:28:08,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:28:08,533 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash -866080606, now seen corresponding path program 1 times [2022-11-20 09:28:08,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:08,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272656103] [2022-11-20 09:28:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:08,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:08,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:08,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272656103] [2022-11-20 09:28:08,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272656103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:08,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055839116] [2022-11-20 09:28:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:08,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:08,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:08,658 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:08,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:28:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:08,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:28:08,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:08,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:09,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055839116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:09,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:09,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-20 09:28:09,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685072265] [2022-11-20 09:28:09,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:09,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:28:09,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:09,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:28:09,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:09,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 09:28:09,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 623 flow. Second operand has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 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 09:28:09,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:09,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 09:28:09,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:10,406 INFO L130 PetriNetUnfolder]: 559/2830 cut-off events. [2022-11-20 09:28:10,406 INFO L131 PetriNetUnfolder]: For 12042/12379 co-relation queries the response was YES. [2022-11-20 09:28:10,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7835 conditions, 2830 events. 559/2830 cut-off events. For 12042/12379 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26979 event pairs, 28 based on Foata normal form. 286/2964 useless extension candidates. Maximal degree in co-relation 7753. Up to 368 conditions per place. [2022-11-20 09:28:10,458 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 50 selfloop transitions, 58 changer transitions 0/222 dead transitions. [2022-11-20 09:28:10,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 222 transitions, 1347 flow [2022-11-20 09:28:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 09:28:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 09:28:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2871 transitions. [2022-11-20 09:28:10,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861111111111111 [2022-11-20 09:28:10,465 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2871 transitions. [2022-11-20 09:28:10,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2871 transitions. [2022-11-20 09:28:10,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:10,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2871 transitions. [2022-11-20 09:28:10,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 106.33333333333333) internal successors, (2871), 27 states have internal predecessors, (2871), 0 states have call successors, (0), 0 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 09:28:10,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 120.0) internal successors, (3360), 28 states have internal predecessors, (3360), 0 states have call successors, (0), 0 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 09:28:10,481 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 120.0) internal successors, (3360), 28 states have internal predecessors, (3360), 0 states have call successors, (0), 0 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 09:28:10,481 INFO L175 Difference]: Start difference. First operand has 173 places, 147 transitions, 623 flow. Second operand 27 states and 2871 transitions. [2022-11-20 09:28:10,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 222 transitions, 1347 flow [2022-11-20 09:28:10,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 222 transitions, 1338 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 09:28:10,498 INFO L231 Difference]: Finished difference. Result has 209 places, 183 transitions, 1156 flow [2022-11-20 09:28:10,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1156, PETRI_PLACES=209, PETRI_TRANSITIONS=183} [2022-11-20 09:28:10,499 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 91 predicate places. [2022-11-20 09:28:10,499 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 183 transitions, 1156 flow [2022-11-20 09:28:10,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 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 09:28:10,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:10,501 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:28:10,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:10,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:10,707 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash 751591720, now seen corresponding path program 1 times [2022-11-20 09:28:10,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:10,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568756546] [2022-11-20 09:28:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:10,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:10,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:10,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568756546] [2022-11-20 09:28:10,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568756546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:10,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:10,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485190730] [2022-11-20 09:28:10,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:10,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:10,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 09:28:10,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 183 transitions, 1156 flow. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 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 09:28:10,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:10,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 09:28:10,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:12,960 INFO L130 PetriNetUnfolder]: 2877/10782 cut-off events. [2022-11-20 09:28:12,960 INFO L131 PetriNetUnfolder]: For 66444/68147 co-relation queries the response was YES. [2022-11-20 09:28:13,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35965 conditions, 10782 events. 2877/10782 cut-off events. For 66444/68147 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 118481 event pairs, 378 based on Foata normal form. 134/10498 useless extension candidates. Maximal degree in co-relation 35871. Up to 2014 conditions per place. [2022-11-20 09:28:13,111 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 241 selfloop transitions, 8 changer transitions 0/357 dead transitions. [2022-11-20 09:28:13,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 357 transitions, 3530 flow [2022-11-20 09:28:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:28:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2022-11-20 09:28:13,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2022-11-20 09:28:13,114 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2022-11-20 09:28:13,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2022-11-20 09:28:13,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:13,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2022-11-20 09:28:13,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 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 09:28:13,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:13,117 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 09:28:13,117 INFO L175 Difference]: Start difference. First operand has 209 places, 183 transitions, 1156 flow. Second operand 5 states and 508 transitions. [2022-11-20 09:28:13,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 357 transitions, 3530 flow [2022-11-20 09:28:13,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 357 transitions, 3083 flow, removed 184 selfloop flow, removed 8 redundant places. [2022-11-20 09:28:13,234 INFO L231 Difference]: Finished difference. Result has 205 places, 183 transitions, 1035 flow [2022-11-20 09:28:13,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=205, PETRI_TRANSITIONS=183} [2022-11-20 09:28:13,236 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 87 predicate places. [2022-11-20 09:28:13,236 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 183 transitions, 1035 flow [2022-11-20 09:28:13,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 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 09:28:13,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:13,253 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] [2022-11-20 09:28:13,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:28:13,253 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1824507043, now seen corresponding path program 1 times [2022-11-20 09:28:13,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:13,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106183660] [2022-11-20 09:28:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:13,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:13,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:13,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106183660] [2022-11-20 09:28:13,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106183660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:13,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17310128] [2022-11-20 09:28:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:13,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:13,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:13,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:13,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:28:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:28:13,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:13,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:13,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17310128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:13,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:13,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 09:28:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611688428] [2022-11-20 09:28:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:13,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:13,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:13,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:28:13,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 09:28:13,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 183 transitions, 1035 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 09:28:13,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:13,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 09:28:13,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:16,017 INFO L130 PetriNetUnfolder]: 2705/10078 cut-off events. [2022-11-20 09:28:16,017 INFO L131 PetriNetUnfolder]: For 69078/70200 co-relation queries the response was YES. [2022-11-20 09:28:16,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34798 conditions, 10078 events. 2705/10078 cut-off events. For 69078/70200 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 109601 event pairs, 715 based on Foata normal form. 134/9852 useless extension candidates. Maximal degree in co-relation 34705. Up to 1966 conditions per place. [2022-11-20 09:28:16,158 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 127 selfloop transitions, 5 changer transitions 0/240 dead transitions. [2022-11-20 09:28:16,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 240 transitions, 1819 flow [2022-11-20 09:28:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2022-11-20 09:28:16,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-11-20 09:28:16,160 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2022-11-20 09:28:16,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2022-11-20 09:28:16,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:16,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2022-11-20 09:28:16,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 09:28:16,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 09:28:16,163 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 09:28:16,164 INFO L175 Difference]: Start difference. First operand has 205 places, 183 transitions, 1035 flow. Second operand 4 states and 405 transitions. [2022-11-20 09:28:16,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 240 transitions, 1819 flow [2022-11-20 09:28:16,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 240 transitions, 1797 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 09:28:16,261 INFO L231 Difference]: Finished difference. Result has 203 places, 182 transitions, 1022 flow [2022-11-20 09:28:16,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1022, PETRI_PLACES=203, PETRI_TRANSITIONS=182} [2022-11-20 09:28:16,261 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 85 predicate places. [2022-11-20 09:28:16,262 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 182 transitions, 1022 flow [2022-11-20 09:28:16,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 09:28:16,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:16,263 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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] [2022-11-20 09:28:16,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:16,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:16,469 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:16,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:16,469 INFO L85 PathProgramCache]: Analyzing trace with hash 956941888, now seen corresponding path program 1 times [2022-11-20 09:28:16,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:16,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609123032] [2022-11-20 09:28:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:16,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:16,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609123032] [2022-11-20 09:28:16,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609123032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361440379] [2022-11-20 09:28:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:16,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:16,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:16,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:16,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:28:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:16,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:28:16,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:17,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:17,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361440379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:17,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:17,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-20 09:28:17,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944838712] [2022-11-20 09:28:17,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:17,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 09:28:17,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 09:28:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:28:17,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 09:28:17,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 182 transitions, 1022 flow. Second operand has 23 states, 23 states have (on average 103.3913043478261) internal successors, (2378), 23 states have internal predecessors, (2378), 0 states have call successors, (0), 0 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 09:28:17,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:17,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 09:28:17,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:20,501 INFO L130 PetriNetUnfolder]: 1044/6317 cut-off events. [2022-11-20 09:28:20,501 INFO L131 PetriNetUnfolder]: For 102376/102929 co-relation queries the response was YES. [2022-11-20 09:28:20,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 6317 events. 1044/6317 cut-off events. For 102376/102929 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 73063 event pairs, 32 based on Foata normal form. 618/6612 useless extension candidates. Maximal degree in co-relation 18249. Up to 628 conditions per place. [2022-11-20 09:28:20,624 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 68 selfloop transitions, 157 changer transitions 0/338 dead transitions. [2022-11-20 09:28:20,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 338 transitions, 2798 flow [2022-11-20 09:28:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 09:28:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 09:28:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4778 transitions. [2022-11-20 09:28:20,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848148148148148 [2022-11-20 09:28:20,632 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4778 transitions. [2022-11-20 09:28:20,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4778 transitions. [2022-11-20 09:28:20,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:20,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4778 transitions. [2022-11-20 09:28:20,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 106.17777777777778) internal successors, (4778), 45 states have internal predecessors, (4778), 0 states have call successors, (0), 0 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 09:28:20,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 120.0) internal successors, (5520), 46 states have internal predecessors, (5520), 0 states have call successors, (0), 0 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 09:28:20,652 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 120.0) internal successors, (5520), 46 states have internal predecessors, (5520), 0 states have call successors, (0), 0 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 09:28:20,652 INFO L175 Difference]: Start difference. First operand has 203 places, 182 transitions, 1022 flow. Second operand 45 states and 4778 transitions. [2022-11-20 09:28:20,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 338 transitions, 2798 flow [2022-11-20 09:28:20,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 338 transitions, 2760 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-20 09:28:20,719 INFO L231 Difference]: Finished difference. Result has 262 places, 285 transitions, 2583 flow [2022-11-20 09:28:20,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2583, PETRI_PLACES=262, PETRI_TRANSITIONS=285} [2022-11-20 09:28:20,720 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 144 predicate places. [2022-11-20 09:28:20,720 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 285 transitions, 2583 flow [2022-11-20 09:28:20,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 103.3913043478261) internal successors, (2378), 23 states have internal predecessors, (2378), 0 states have call successors, (0), 0 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 09:28:20,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:20,721 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 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] [2022-11-20 09:28:20,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:20,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:28:20,927 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1322986484, now seen corresponding path program 2 times [2022-11-20 09:28:20,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:20,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699004119] [2022-11-20 09:28:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:21,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:21,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699004119] [2022-11-20 09:28:21,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699004119] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:21,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536069270] [2022-11-20 09:28:21,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:21,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:21,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:21,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:21,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:28:21,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:28:21,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:21,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:28:21,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:21,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:22,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536069270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:22,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:22,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-11-20 09:28:22,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782185015] [2022-11-20 09:28:22,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:22,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 09:28:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 09:28:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 09:28:22,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 09:28:22,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 285 transitions, 2583 flow. Second operand has 35 states, 35 states have (on average 99.8) internal successors, (3493), 35 states have internal predecessors, (3493), 0 states have call successors, (0), 0 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 09:28:22,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:22,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 09:28:22,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:36,133 INFO L130 PetriNetUnfolder]: 11112/45860 cut-off events. [2022-11-20 09:28:36,134 INFO L131 PetriNetUnfolder]: For 290793/295203 co-relation queries the response was YES. [2022-11-20 09:28:36,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146290 conditions, 45860 events. 11112/45860 cut-off events. For 290793/295203 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 618881 event pairs, 408 based on Foata normal form. 588/45035 useless extension candidates. Maximal degree in co-relation 146172. Up to 6934 conditions per place. [2022-11-20 09:28:37,234 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 3288 selfloop transitions, 23 changer transitions 0/3413 dead transitions. [2022-11-20 09:28:37,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 3413 transitions, 47563 flow [2022-11-20 09:28:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:28:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 09:28:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2349 transitions. [2022-11-20 09:28:37,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8510869565217392 [2022-11-20 09:28:37,239 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2349 transitions. [2022-11-20 09:28:37,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2349 transitions. [2022-11-20 09:28:37,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:37,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2349 transitions. [2022-11-20 09:28:37,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 102.1304347826087) internal successors, (2349), 23 states have internal predecessors, (2349), 0 states have call successors, (0), 0 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 09:28:37,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 120.0) internal successors, (2880), 24 states have internal predecessors, (2880), 0 states have call successors, (0), 0 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 09:28:37,253 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 120.0) internal successors, (2880), 24 states have internal predecessors, (2880), 0 states have call successors, (0), 0 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 09:28:37,253 INFO L175 Difference]: Start difference. First operand has 262 places, 285 transitions, 2583 flow. Second operand 23 states and 2349 transitions. [2022-11-20 09:28:37,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 3413 transitions, 47563 flow [2022-11-20 09:28:37,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 3413 transitions, 42696 flow, removed 1940 selfloop flow, removed 15 redundant places. [2022-11-20 09:28:37,857 INFO L231 Difference]: Finished difference. Result has 274 places, 298 transitions, 2485 flow [2022-11-20 09:28:37,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2485, PETRI_PLACES=274, PETRI_TRANSITIONS=298} [2022-11-20 09:28:37,858 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 156 predicate places. [2022-11-20 09:28:37,858 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 298 transitions, 2485 flow [2022-11-20 09:28:37,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 99.8) internal successors, (3493), 35 states have internal predecessors, (3493), 0 states have call successors, (0), 0 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 09:28:37,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:37,859 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 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] [2022-11-20 09:28:37,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:38,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:28:38,065 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:38,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:38,066 INFO L85 PathProgramCache]: Analyzing trace with hash 738930051, now seen corresponding path program 2 times [2022-11-20 09:28:38,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:38,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805629438] [2022-11-20 09:28:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:38,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:38,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:38,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805629438] [2022-11-20 09:28:38,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805629438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:38,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941389049] [2022-11-20 09:28:38,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:38,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:38,509 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:38,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:28:38,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:28:38,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:38,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:28:38,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:38,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:39,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941389049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:39,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:39,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 09:28:39,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772078628] [2022-11-20 09:28:39,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:39,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 09:28:39,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 09:28:39,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-11-20 09:28:39,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 09:28:39,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 298 transitions, 2485 flow. Second operand has 29 states, 29 states have (on average 103.3103448275862) internal successors, (2996), 29 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 09:28:39,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:39,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 09:28:39,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:49,120 INFO L130 PetriNetUnfolder]: 3810/23013 cut-off events. [2022-11-20 09:28:49,120 INFO L131 PetriNetUnfolder]: For 778583/780559 co-relation queries the response was YES. [2022-11-20 09:28:49,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74758 conditions, 23013 events. 3810/23013 cut-off events. For 778583/780559 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 329528 event pairs, 96 based on Foata normal form. 1061/22624 useless extension candidates. Maximal degree in co-relation 74634. Up to 2009 conditions per place. [2022-11-20 09:28:49,898 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 106 selfloop transitions, 284 changer transitions 0/516 dead transitions. [2022-11-20 09:28:49,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 516 transitions, 5476 flow [2022-11-20 09:28:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 09:28:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-20 09:28:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5819 transitions. [2022-11-20 09:28:49,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816666666666667 [2022-11-20 09:28:49,911 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5819 transitions. [2022-11-20 09:28:49,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5819 transitions. [2022-11-20 09:28:49,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:49,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5819 transitions. [2022-11-20 09:28:49,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 105.8) internal successors, (5819), 55 states have internal predecessors, (5819), 0 states have call successors, (0), 0 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 09:28:49,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 120.0) internal successors, (6720), 56 states have internal predecessors, (6720), 0 states have call successors, (0), 0 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 09:28:49,946 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 120.0) internal successors, (6720), 56 states have internal predecessors, (6720), 0 states have call successors, (0), 0 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 09:28:49,947 INFO L175 Difference]: Start difference. First operand has 274 places, 298 transitions, 2485 flow. Second operand 55 states and 5819 transitions. [2022-11-20 09:28:49,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 516 transitions, 5476 flow [2022-11-20 09:28:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 516 transitions, 5394 flow, removed 25 selfloop flow, removed 12 redundant places. [2022-11-20 09:28:50,587 INFO L231 Difference]: Finished difference. Result has 331 places, 446 transitions, 4979 flow [2022-11-20 09:28:50,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=4979, PETRI_PLACES=331, PETRI_TRANSITIONS=446} [2022-11-20 09:28:50,588 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 213 predicate places. [2022-11-20 09:28:50,589 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 446 transitions, 4979 flow [2022-11-20 09:28:50,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 103.3103448275862) internal successors, (2996), 29 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 09:28:50,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:50,590 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 09:28:50,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:50,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:50,804 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 09:28:50,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash 789398012, now seen corresponding path program 1 times [2022-11-20 09:28:50,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:50,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039096745] [2022-11-20 09:28:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:50,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:51,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:51,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039096745] [2022-11-20 09:28:51,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039096745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:51,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182553465] [2022-11-20 09:28:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:51,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:51,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:51,095 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:51,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4acc03a-df78-495b-bca9-8060c47c46b8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:28:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:28:51,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:51,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:51,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182553465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:51,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:51,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-20 09:28:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723592108] [2022-11-20 09:28:51,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 09:28:51,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:51,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 09:28:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:28:51,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 09:28:51,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 446 transitions, 4979 flow. Second operand has 26 states, 26 states have (on average 103.34615384615384) internal successors, (2687), 26 states have internal predecessors, (2687), 0 states have call successors, (0), 0 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 09:28:51,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:51,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 09:28:51,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:11,826 INFO L130 PetriNetUnfolder]: 6696/39494 cut-off events. [2022-11-20 09:29:11,826 INFO L131 PetriNetUnfolder]: For 2098841/2101413 co-relation queries the response was YES. [2022-11-20 09:29:13,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146229 conditions, 39494 events. 6696/39494 cut-off events. For 2098841/2101413 co-relation queries the response was YES. Maximal size of possible extension queue 2417. Compared 616045 event pairs, 120 based on Foata normal form. 1316/38109 useless extension candidates. Maximal degree in co-relation 146092. Up to 3787 conditions per place.