./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8 --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 e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 --- 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-e04fb08 [2022-11-16 12:26:29,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:26:29,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:26:29,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:26:29,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:26:29,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:26:29,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:26:29,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:26:29,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:26:29,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:26:29,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:26:29,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:26:29,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:26:29,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:26:29,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:26:29,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:26:29,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:26:29,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:26:29,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:26:29,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:26:29,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:26:29,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:26:29,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:26:29,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:26:29,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:26:29,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:26:29,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:26:29,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:26:29,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:26:29,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:26:29,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:26:29,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:26:29,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:26:29,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:26:29,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:26:29,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:26:29,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:26:29,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:26:29,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:26:29,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:26:29,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:26:29,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:26:29,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:26:29,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:26:29,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:26:29,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:26:29,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:26:29,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:26:29,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:26:29,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:26:29,369 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:26:29,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:26:29,370 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:26:29,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:26:29,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:26:29,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:26:29,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:26:29,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:26:29,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:26:29,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:26:29,372 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:26:29,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:26:29,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:26:29,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:26:29,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:26:29,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:26:29,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:26:29,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:26:29,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:26:29,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:26:29,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:26:29,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:26:29,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:26:29,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:26:29,376 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:26:29,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:26:29,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:26:29,377 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_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 [2022-11-16 12:26:29,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:26:29,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:26:29,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:26:29,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:26:29,694 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:26:29,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/fib_safe-12.i [2022-11-16 12:26:29,774 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/data/2abca90ed/495fef7e79724ee7a632434cd546924e/FLAG03d956e7a [2022-11-16 12:26:30,343 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:26:30,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/sv-benchmarks/c/pthread/fib_safe-12.i [2022-11-16 12:26:30,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/data/2abca90ed/495fef7e79724ee7a632434cd546924e/FLAG03d956e7a [2022-11-16 12:26:30,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/data/2abca90ed/495fef7e79724ee7a632434cd546924e [2022-11-16 12:26:30,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:26:30,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:26:30,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:26:30,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:26:30,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:26:30,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:26:30" (1/1) ... [2022-11-16 12:26:30,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5e1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:30, skipping insertion in model container [2022-11-16 12:26:30,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:26:30" (1/1) ... [2022-11-16 12:26:30,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:26:30,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:26:31,084 WARN L229 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_3423b068-a39e-42b7-b888-0a0637d9857c/sv-benchmarks/c/pthread/fib_safe-12.i[30241,30254] [2022-11-16 12:26:31,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:26:31,121 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:26:31,173 WARN L229 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_3423b068-a39e-42b7-b888-0a0637d9857c/sv-benchmarks/c/pthread/fib_safe-12.i[30241,30254] [2022-11-16 12:26:31,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:26:31,214 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:26:31,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31 WrapperNode [2022-11-16 12:26:31,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:26:31,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:26:31,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:26:31,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:26:31,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,291 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-16 12:26:31,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:26:31,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:26:31,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:26:31,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:26:31,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,336 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:26:31,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:26:31,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:26:31,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:26:31,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (1/1) ... [2022-11-16 12:26:31,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:26:31,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:31,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:26:31,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:26:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 12:26:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 12:26:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 12:26:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 12:26:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:26:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:26:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:26:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:26:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:26:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:26:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:26:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:26:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:26:31,443 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:26:31,624 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:26:31,626 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:26:31,872 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:26:31,902 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:26:31,903 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:26:31,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:26:31 BoogieIcfgContainer [2022-11-16 12:26:31,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:26:31,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:26:31,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:26:31,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:26:31,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:26:30" (1/3) ... [2022-11-16 12:26:31,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1363d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:26:31, skipping insertion in model container [2022-11-16 12:26:31,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:31" (2/3) ... [2022-11-16 12:26:31,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1363d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:26:31, skipping insertion in model container [2022-11-16 12:26:31,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:26:31" (3/3) ... [2022-11-16 12:26:31,920 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-12.i [2022-11-16 12:26:31,929 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:26:31,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:26:31,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 12:26:31,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:26:32,011 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:26:32,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-16 12:26:32,106 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-16 12:26:32,107 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:26:32,113 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 138 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. [2022-11-16 12:26:32,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-16 12:26:32,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-16 12:26:32,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:26:32,139 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;@43fc7e76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:26:32,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-16 12:26:32,154 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-16 12:26:32,154 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:26:32,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:32,155 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] [2022-11-16 12:26:32,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 479483913, now seen corresponding path program 1 times [2022-11-16 12:26:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:32,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501032277] [2022-11-16 12:26:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:32,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501032277] [2022-11-16 12:26:32,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501032277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:32,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:32,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971173410] [2022-11-16 12:26:32,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:32,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:32,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:32,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-16 12:26:32,714 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) [2022-11-16 12:26:32,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:32,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-16 12:26:32,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:33,031 INFO L130 PetriNetUnfolder]: 81/446 cut-off events. [2022-11-16 12:26:33,032 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:26:33,038 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 2442 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. [2022-11-16 12:26:33,044 INFO L137 encePairwiseOnDemand]: 108/120 looper letters, 19 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-16 12:26:33,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 305 flow [2022-11-16 12:26:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:26:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:26:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-11-16 12:26:33,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-16 12:26:33,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-11-16 12:26:33,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-11-16 12:26:33,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:33,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-11-16 12:26:33,081 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) [2022-11-16 12:26:33,089 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) [2022-11-16 12:26:33,090 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) [2022-11-16 12:26:33,092 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 242 flow. Second operand 4 states and 448 transitions. [2022-11-16 12:26:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 305 flow [2022-11-16 12:26:33,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:26:33,104 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 261 flow [2022-11-16 12:26:33,106 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} [2022-11-16 12:26:33,111 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-11-16 12:26:33,111 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 261 flow [2022-11-16 12:26:33,112 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) [2022-11-16 12:26:33,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:33,112 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] [2022-11-16 12:26:33,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:26:33,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1222550988, now seen corresponding path program 1 times [2022-11-16 12:26:33,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:33,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353418251] [2022-11-16 12:26:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:33,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:33,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:33,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353418251] [2022-11-16 12:26:33,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353418251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:33,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:33,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:33,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486988874] [2022-11-16 12:26:33,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:33,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:33,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:33,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:33,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:33,262 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) [2022-11-16 12:26:33,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:33,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:33,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:33,386 INFO L130 PetriNetUnfolder]: 109/314 cut-off events. [2022-11-16 12:26:33,386 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-11-16 12:26:33,390 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 1525 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. [2022-11-16 12:26:33,395 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 32 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2022-11-16 12:26:33,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 385 flow [2022-11-16 12:26:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2022-11-16 12:26:33,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783333333333333 [2022-11-16 12:26:33,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2022-11-16 12:26:33,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2022-11-16 12:26:33,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:33,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2022-11-16 12:26:33,400 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) [2022-11-16 12:26:33,401 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) [2022-11-16 12:26:33,402 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) [2022-11-16 12:26:33,402 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 261 flow. Second operand 5 states and 527 transitions. [2022-11-16 12:26:33,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 385 flow [2022-11-16 12:26:33,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:26:33,406 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 293 flow [2022-11-16 12:26:33,407 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} [2022-11-16 12:26:33,408 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2022-11-16 12:26:33,408 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 293 flow [2022-11-16 12:26:33,408 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) [2022-11-16 12:26:33,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:33,409 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] [2022-11-16 12:26:33,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:26:33,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:33,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1876384738, now seen corresponding path program 1 times [2022-11-16 12:26:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:33,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818057177] [2022-11-16 12:26:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:33,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:33,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:33,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818057177] [2022-11-16 12:26:33,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818057177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:33,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184213627] [2022-11-16 12:26:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:33,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:33,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:33,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:33,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:26:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:33,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:26:33,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:33,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:33,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184213627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:33,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:26:33,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-16 12:26:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833583891] [2022-11-16 12:26:33,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:34,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:26:34,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:34,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:26:34,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:26:34,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-16 12:26:34,005 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) [2022-11-16 12:26:34,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:34,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-16 12:26:34,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:34,562 INFO L130 PetriNetUnfolder]: 235/1245 cut-off events. [2022-11-16 12:26:34,563 INFO L131 PetriNetUnfolder]: For 157/176 co-relation queries the response was YES. [2022-11-16 12:26:34,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 1245 events. 235/1245 cut-off events. For 157/176 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9632 event pairs, 18 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 2070. Up to 245 conditions per place. [2022-11-16 12:26:34,586 INFO L137 encePairwiseOnDemand]: 110/120 looper letters, 48 selfloop transitions, 41 changer transitions 0/192 dead transitions. [2022-11-16 12:26:34,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 192 transitions, 731 flow [2022-11-16 12:26:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:26:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:26:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1944 transitions. [2022-11-16 12:26:34,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-16 12:26:34,593 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1944 transitions. [2022-11-16 12:26:34,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1944 transitions. [2022-11-16 12:26:34,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:34,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1944 transitions. [2022-11-16 12:26:34,601 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) [2022-11-16 12:26:34,606 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) [2022-11-16 12:26:34,609 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) [2022-11-16 12:26:34,609 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 293 flow. Second operand 18 states and 1944 transitions. [2022-11-16 12:26:34,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 192 transitions, 731 flow [2022-11-16 12:26:34,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:26:34,619 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 685 flow [2022-11-16 12:26:34,619 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} [2022-11-16 12:26:34,622 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-16 12:26:34,622 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 685 flow [2022-11-16 12:26:34,623 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) [2022-11-16 12:26:34,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:34,624 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] [2022-11-16 12:26:34,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:26:34,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:34,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:34,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1876384737, now seen corresponding path program 1 times [2022-11-16 12:26:34,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:34,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481865018] [2022-11-16 12:26:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:34,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481865018] [2022-11-16 12:26:34,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481865018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:34,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801299567] [2022-11-16 12:26:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:34,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:34,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:34,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:34,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:26:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:35,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:26:35,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:35,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:35,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801299567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:35,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:26:35,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-16 12:26:35,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328032264] [2022-11-16 12:26:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:35,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:26:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:26:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:26:35,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-16 12:26:35,169 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) [2022-11-16 12:26:35,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:35,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-16 12:26:35,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:35,360 INFO L130 PetriNetUnfolder]: 113/831 cut-off events. [2022-11-16 12:26:35,360 INFO L131 PetriNetUnfolder]: For 2947/3008 co-relation queries the response was YES. [2022-11-16 12:26:35,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 831 events. 113/831 cut-off events. For 2947/3008 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5748 event pairs, 28 based on Foata normal form. 91/812 useless extension candidates. Maximal degree in co-relation 1823. Up to 99 conditions per place. [2022-11-16 12:26:35,375 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 23 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2022-11-16 12:26:35,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 140 transitions, 618 flow [2022-11-16 12:26:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 531 transitions. [2022-11-16 12:26:35,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885 [2022-11-16 12:26:35,377 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 531 transitions. [2022-11-16 12:26:35,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 531 transitions. [2022-11-16 12:26:35,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:35,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 531 transitions. [2022-11-16 12:26:35,379 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) [2022-11-16 12:26:35,380 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) [2022-11-16 12:26:35,383 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) [2022-11-16 12:26:35,383 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 685 flow. Second operand 5 states and 531 transitions. [2022-11-16 12:26:35,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 140 transitions, 618 flow [2022-11-16 12:26:35,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 140 transitions, 533 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-11-16 12:26:35,400 INFO L231 Difference]: Finished difference. Result has 143 places, 136 transitions, 478 flow [2022-11-16 12:26:35,401 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} [2022-11-16 12:26:35,402 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 25 predicate places. [2022-11-16 12:26:35,402 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 136 transitions, 478 flow [2022-11-16 12:26:35,403 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) [2022-11-16 12:26:35,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:35,404 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] [2022-11-16 12:26:35,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:35,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:35,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1210370216, now seen corresponding path program 1 times [2022-11-16 12:26:35,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:35,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009494710] [2022-11-16 12:26:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:35,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:35,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009494710] [2022-11-16 12:26:35,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009494710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:35,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:35,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928499615] [2022-11-16 12:26:35,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:35,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:35,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:35,693 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) [2022-11-16 12:26:35,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:35,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:35,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:35,908 INFO L130 PetriNetUnfolder]: 168/715 cut-off events. [2022-11-16 12:26:35,908 INFO L131 PetriNetUnfolder]: For 1684/1787 co-relation queries the response was YES. [2022-11-16 12:26:35,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 715 events. 168/715 cut-off events. For 1684/1787 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4485 event pairs, 36 based on Foata normal form. 18/667 useless extension candidates. Maximal degree in co-relation 1971. Up to 196 conditions per place. [2022-11-16 12:26:35,932 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 62 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2022-11-16 12:26:35,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 165 transitions, 797 flow [2022-11-16 12:26:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-16 12:26:35,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633333333333333 [2022-11-16 12:26:35,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-16 12:26:35,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-16 12:26:35,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:35,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-16 12:26:35,936 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) [2022-11-16 12:26:35,937 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) [2022-11-16 12:26:35,938 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) [2022-11-16 12:26:35,938 INFO L175 Difference]: Start difference. First operand has 143 places, 136 transitions, 478 flow. Second operand 5 states and 518 transitions. [2022-11-16 12:26:35,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 165 transitions, 797 flow [2022-11-16 12:26:35,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 165 transitions, 794 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:26:35,948 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 507 flow [2022-11-16 12:26:35,948 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} [2022-11-16 12:26:35,950 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2022-11-16 12:26:35,951 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 507 flow [2022-11-16 12:26:35,951 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) [2022-11-16 12:26:35,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:35,951 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] [2022-11-16 12:26:35,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:26:35,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:35,953 INFO L85 PathProgramCache]: Analyzing trace with hash 680542369, now seen corresponding path program 1 times [2022-11-16 12:26:35,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:35,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320136920] [2022-11-16 12:26:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:26:36,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:36,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320136920] [2022-11-16 12:26:36,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320136920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:36,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:36,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:36,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988469271] [2022-11-16 12:26:36,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:36,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:36,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:36,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:36,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:36,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:36,040 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) [2022-11-16 12:26:36,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:36,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:36,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:36,216 INFO L130 PetriNetUnfolder]: 184/634 cut-off events. [2022-11-16 12:26:36,216 INFO L131 PetriNetUnfolder]: For 1629/1766 co-relation queries the response was YES. [2022-11-16 12:26:36,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 634 events. 184/634 cut-off events. For 1629/1766 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4085 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. [2022-11-16 12:26:36,235 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/166 dead transitions. [2022-11-16 12:26:36,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 166 transitions, 855 flow [2022-11-16 12:26:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2022-11-16 12:26:36,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-11-16 12:26:36,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2022-11-16 12:26:36,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2022-11-16 12:26:36,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:36,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2022-11-16 12:26:36,239 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) [2022-11-16 12:26:36,241 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) [2022-11-16 12:26:36,241 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) [2022-11-16 12:26:36,241 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 507 flow. Second operand 5 states and 512 transitions. [2022-11-16 12:26:36,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 166 transitions, 855 flow [2022-11-16 12:26:36,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 166 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:26:36,248 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 525 flow [2022-11-16 12:26:36,249 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} [2022-11-16 12:26:36,249 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 33 predicate places. [2022-11-16 12:26:36,250 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 525 flow [2022-11-16 12:26:36,250 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) [2022-11-16 12:26:36,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:36,250 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] [2022-11-16 12:26:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:26:36,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash -378022715, now seen corresponding path program 1 times [2022-11-16 12:26:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:36,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314904576] [2022-11-16 12:26:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:36,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:36,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:36,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314904576] [2022-11-16 12:26:36,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314904576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:36,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815104754] [2022-11-16 12:26:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:36,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:36,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:36,327 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:36,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:26:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:36,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:26:36,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:36,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:36,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815104754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:36,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:26:36,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:26:36,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895458386] [2022-11-16 12:26:36,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:36,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:26:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:26:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:26:36,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:36,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 525 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) [2022-11-16 12:26:36,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:36,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:36,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:36,699 INFO L130 PetriNetUnfolder]: 176/650 cut-off events. [2022-11-16 12:26:36,700 INFO L131 PetriNetUnfolder]: For 1727/1842 co-relation queries the response was YES. [2022-11-16 12:26:36,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 650 events. 176/650 cut-off events. For 1727/1842 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4069 event pairs, 25 based on Foata normal form. 21/625 useless extension candidates. Maximal degree in co-relation 2089. Up to 135 conditions per place. [2022-11-16 12:26:36,721 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 62 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2022-11-16 12:26:36,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 167 transitions, 869 flow [2022-11-16 12:26:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:26:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:26:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 715 transitions. [2022-11-16 12:26:36,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-11-16 12:26:36,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 715 transitions. [2022-11-16 12:26:36,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 715 transitions. [2022-11-16 12:26:36,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:36,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 715 transitions. [2022-11-16 12:26:36,726 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) [2022-11-16 12:26:36,727 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) [2022-11-16 12:26:36,728 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) [2022-11-16 12:26:36,728 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 525 flow. Second operand 7 states and 715 transitions. [2022-11-16 12:26:36,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 167 transitions, 869 flow [2022-11-16 12:26:36,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 167 transitions, 857 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:26:36,736 INFO L231 Difference]: Finished difference. Result has 153 places, 138 transitions, 521 flow [2022-11-16 12:26:36,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=521, PETRI_PLACES=153, PETRI_TRANSITIONS=138} [2022-11-16 12:26:36,737 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 35 predicate places. [2022-11-16 12:26:36,738 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 138 transitions, 521 flow [2022-11-16 12:26:36,738 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) [2022-11-16 12:26:36,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:36,738 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] [2022-11-16 12:26:36,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:36,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:36,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:36,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash 867254618, now seen corresponding path program 1 times [2022-11-16 12:26:36,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:36,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347925608] [2022-11-16 12:26:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:36,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:37,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:37,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347925608] [2022-11-16 12:26:37,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347925608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:37,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:37,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:37,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409746729] [2022-11-16 12:26:37,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:37,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:37,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:37,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:37,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 120 [2022-11-16 12:26:37,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 138 transitions, 521 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) [2022-11-16 12:26:37,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:37,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 120 [2022-11-16 12:26:37,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:37,531 INFO L130 PetriNetUnfolder]: 713/2602 cut-off events. [2022-11-16 12:26:37,531 INFO L131 PetriNetUnfolder]: For 5841/6209 co-relation queries the response was YES. [2022-11-16 12:26:37,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 2602 events. 713/2602 cut-off events. For 5841/6209 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22441 event pairs, 104 based on Foata normal form. 36/2383 useless extension candidates. Maximal degree in co-relation 7138. Up to 593 conditions per place. [2022-11-16 12:26:37,577 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 86 selfloop transitions, 4 changer transitions 0/192 dead transitions. [2022-11-16 12:26:37,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 192 transitions, 1081 flow [2022-11-16 12:26:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:26:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:26:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2022-11-16 12:26:37,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791666666666667 [2022-11-16 12:26:37,580 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2022-11-16 12:26:37,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2022-11-16 12:26:37,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:37,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2022-11-16 12:26:37,582 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) [2022-11-16 12:26:37,583 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) [2022-11-16 12:26:37,583 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) [2022-11-16 12:26:37,584 INFO L175 Difference]: Start difference. First operand has 153 places, 138 transitions, 521 flow. Second operand 4 states and 422 transitions. [2022-11-16 12:26:37,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 192 transitions, 1081 flow [2022-11-16 12:26:37,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 192 transitions, 1070 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:26:37,595 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 536 flow [2022-11-16 12:26:37,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2022-11-16 12:26:37,598 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 35 predicate places. [2022-11-16 12:26:37,598 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 536 flow [2022-11-16 12:26:37,599 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) [2022-11-16 12:26:37,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:37,600 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] [2022-11-16 12:26:37,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:26:37,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:37,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1564888054, now seen corresponding path program 1 times [2022-11-16 12:26:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:37,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027410662] [2022-11-16 12:26:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:26:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:37,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027410662] [2022-11-16 12:26:37,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027410662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:37,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:37,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946226530] [2022-11-16 12:26:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:37,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:37,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 536 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) [2022-11-16 12:26:37,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:37,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:37,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:37,916 INFO L130 PetriNetUnfolder]: 155/658 cut-off events. [2022-11-16 12:26:37,916 INFO L131 PetriNetUnfolder]: For 1633/1766 co-relation queries the response was YES. [2022-11-16 12:26:37,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 658 events. 155/658 cut-off events. For 1633/1766 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4069 event pairs, 24 based on Foata normal form. 30/651 useless extension candidates. Maximal degree in co-relation 1939. Up to 133 conditions per place. [2022-11-16 12:26:37,942 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2022-11-16 12:26:37,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 167 transitions, 875 flow [2022-11-16 12:26:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2022-11-16 12:26:37,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8483333333333334 [2022-11-16 12:26:37,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2022-11-16 12:26:37,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2022-11-16 12:26:37,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:37,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2022-11-16 12:26:37,956 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) [2022-11-16 12:26:37,961 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) [2022-11-16 12:26:37,961 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) [2022-11-16 12:26:37,961 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 536 flow. Second operand 5 states and 509 transitions. [2022-11-16 12:26:37,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 167 transitions, 875 flow [2022-11-16 12:26:37,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 873 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:26:37,975 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 554 flow [2022-11-16 12:26:37,976 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} [2022-11-16 12:26:37,977 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 38 predicate places. [2022-11-16 12:26:37,977 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 554 flow [2022-11-16 12:26:37,977 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) [2022-11-16 12:26:37,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:37,982 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] [2022-11-16 12:26:37,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:26:37,983 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1266889761, now seen corresponding path program 1 times [2022-11-16 12:26:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:37,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426857692] [2022-11-16 12:26:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:38,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:38,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426857692] [2022-11-16 12:26:38,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426857692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:38,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110187114] [2022-11-16 12:26:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:38,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:38,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:38,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:38,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:26:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:38,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:26:38,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:38,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:38,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110187114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:38,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:26:38,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:26:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907761672] [2022-11-16 12:26:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:38,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:26:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:38,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:26:38,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:26:38,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:38,246 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) [2022-11-16 12:26:38,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:38,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:38,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:38,469 INFO L130 PetriNetUnfolder]: 148/626 cut-off events. [2022-11-16 12:26:38,469 INFO L131 PetriNetUnfolder]: For 1628/1758 co-relation queries the response was YES. [2022-11-16 12:26:38,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 626 events. 148/626 cut-off events. For 1628/1758 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3740 event pairs, 29 based on Foata normal form. 22/605 useless extension candidates. Maximal degree in co-relation 1918. Up to 149 conditions per place. [2022-11-16 12:26:38,495 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 43 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2022-11-16 12:26:38,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 715 flow [2022-11-16 12:26:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:26:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:26:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2022-11-16 12:26:38,498 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8479166666666667 [2022-11-16 12:26:38,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2022-11-16 12:26:38,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2022-11-16 12:26:38,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:38,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2022-11-16 12:26:38,500 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) [2022-11-16 12:26:38,501 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) [2022-11-16 12:26:38,502 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) [2022-11-16 12:26:38,502 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 554 flow. Second operand 4 states and 407 transitions. [2022-11-16 12:26:38,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 715 flow [2022-11-16 12:26:38,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 703 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:26:38,510 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 548 flow [2022-11-16 12:26:38,510 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} [2022-11-16 12:26:38,511 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 37 predicate places. [2022-11-16 12:26:38,511 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 548 flow [2022-11-16 12:26:38,512 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) [2022-11-16 12:26:38,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:38,512 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] [2022-11-16 12:26:38,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:38,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:26:38,717 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)] === [2022-11-16 12:26:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1888633810, now seen corresponding path program 1 times [2022-11-16 12:26:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:38,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975572002] [2022-11-16 12:26:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:38,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:38,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975572002] [2022-11-16 12:26:38,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975572002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:38,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:38,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425005893] [2022-11-16 12:26:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:38,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:38,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-16 12:26:38,806 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) [2022-11-16 12:26:38,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:38,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-16 12:26:38,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:39,354 INFO L130 PetriNetUnfolder]: 844/2627 cut-off events. [2022-11-16 12:26:39,354 INFO L131 PetriNetUnfolder]: For 6059/6425 co-relation queries the response was YES. [2022-11-16 12:26:39,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 2627 events. 844/2627 cut-off events. For 6059/6425 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21503 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. [2022-11-16 12:26:39,391 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 112 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2022-11-16 12:26:39,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 217 transitions, 1344 flow [2022-11-16 12:26:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2022-11-16 12:26:39,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86 [2022-11-16 12:26:39,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2022-11-16 12:26:39,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2022-11-16 12:26:39,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:39,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2022-11-16 12:26:39,395 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) [2022-11-16 12:26:39,396 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) [2022-11-16 12:26:39,397 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) [2022-11-16 12:26:39,397 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 548 flow. Second operand 5 states and 516 transitions. [2022-11-16 12:26:39,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 217 transitions, 1344 flow [2022-11-16 12:26:39,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 1334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:26:39,407 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 570 flow [2022-11-16 12:26:39,408 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} [2022-11-16 12:26:39,408 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 41 predicate places. [2022-11-16 12:26:39,408 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 570 flow [2022-11-16 12:26:39,409 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) [2022-11-16 12:26:39,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:39,409 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] [2022-11-16 12:26:39,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:26:39,409 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)] === [2022-11-16 12:26:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash 904576117, now seen corresponding path program 1 times [2022-11-16 12:26:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:39,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791304843] [2022-11-16 12:26:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:39,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:39,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791304843] [2022-11-16 12:26:39,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791304843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:39,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215983181] [2022-11-16 12:26:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:39,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:39,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:39,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:39,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:26:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:39,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:26:39,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:39,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:40,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215983181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:40,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:26:40,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-16 12:26:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253279670] [2022-11-16 12:26:40,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:40,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:26:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:26:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:26:40,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:40,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 570 flow. Second operand has 17 states, 17 states have (on average 99.82352941176471) internal successors, (1697), 17 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:40,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:40,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:40,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:41,215 INFO L130 PetriNetUnfolder]: 1212/4451 cut-off events. [2022-11-16 12:26:41,215 INFO L131 PetriNetUnfolder]: For 7711/8232 co-relation queries the response was YES. [2022-11-16 12:26:41,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11509 conditions, 4451 events. 1212/4451 cut-off events. For 7711/8232 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 41168 event pairs, 56 based on Foata normal form. 85/4295 useless extension candidates. Maximal degree in co-relation 11435. Up to 692 conditions per place. [2022-11-16 12:26:41,287 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 235 selfloop transitions, 11 changer transitions 0/349 dead transitions. [2022-11-16 12:26:41,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 349 transitions, 2572 flow [2022-11-16 12:26:41,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:26:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:26:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1128 transitions. [2022-11-16 12:26:41,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2022-11-16 12:26:41,292 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1128 transitions. [2022-11-16 12:26:41,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1128 transitions. [2022-11-16 12:26:41,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:41,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1128 transitions. [2022-11-16 12:26:41,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.54545454545455) internal successors, (1128), 11 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:41,300 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) [2022-11-16 12:26:41,301 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) [2022-11-16 12:26:41,301 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 570 flow. Second operand 11 states and 1128 transitions. [2022-11-16 12:26:41,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 349 transitions, 2572 flow [2022-11-16 12:26:41,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 349 transitions, 2570 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:26:41,319 INFO L231 Difference]: Finished difference. Result has 172 places, 148 transitions, 625 flow [2022-11-16 12:26:41,320 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=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=625, PETRI_PLACES=172, PETRI_TRANSITIONS=148} [2022-11-16 12:26:41,321 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 54 predicate places. [2022-11-16 12:26:41,321 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 148 transitions, 625 flow [2022-11-16 12:26:41,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 99.82352941176471) internal successors, (1697), 17 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:41,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:41,323 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] [2022-11-16 12:26:41,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:41,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:26:41,528 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)] === [2022-11-16 12:26:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2022911216, now seen corresponding path program 1 times [2022-11-16 12:26:41,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:41,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878816050] [2022-11-16 12:26:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:41,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878816050] [2022-11-16 12:26:41,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878816050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:41,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884347838] [2022-11-16 12:26:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:41,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:41,729 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:41,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:26:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:41,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:26:41,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:42,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:42,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884347838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:42,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:26:42,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-16 12:26:42,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970765942] [2022-11-16 12:26:42,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:42,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:26:42,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:42,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:26:42,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:26:42,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:42,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 148 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) [2022-11-16 12:26:42,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:42,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:42,990 INFO L130 PetriNetUnfolder]: 1071/4238 cut-off events. [2022-11-16 12:26:42,990 INFO L131 PetriNetUnfolder]: For 7277/7748 co-relation queries the response was YES. [2022-11-16 12:26:43,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11049 conditions, 4238 events. 1071/4238 cut-off events. For 7277/7748 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 39193 event pairs, 56 based on Foata normal form. 100/4093 useless extension candidates. Maximal degree in co-relation 10969. Up to 1302 conditions per place. [2022-11-16 12:26:43,122 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 90 selfloop transitions, 4 changer transitions 0/197 dead transitions. [2022-11-16 12:26:43,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 1183 flow [2022-11-16 12:26:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:26:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:26:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 611 transitions. [2022-11-16 12:26:43,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486111111111111 [2022-11-16 12:26:43,125 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 611 transitions. [2022-11-16 12:26:43,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 611 transitions. [2022-11-16 12:26:43,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:43,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 611 transitions. [2022-11-16 12:26:43,127 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) [2022-11-16 12:26:43,128 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) [2022-11-16 12:26:43,129 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) [2022-11-16 12:26:43,129 INFO L175 Difference]: Start difference. First operand has 172 places, 148 transitions, 625 flow. Second operand 6 states and 611 transitions. [2022-11-16 12:26:43,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 1183 flow [2022-11-16 12:26:43,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 197 transitions, 1169 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-16 12:26:43,145 INFO L231 Difference]: Finished difference. Result has 173 places, 147 transitions, 615 flow [2022-11-16 12:26:43,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=615, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2022-11-16 12:26:43,146 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 55 predicate places. [2022-11-16 12:26:43,146 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 615 flow [2022-11-16 12:26:43,147 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) [2022-11-16 12:26:43,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:43,147 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] [2022-11-16 12:26:43,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:43,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:43,353 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1986225848, now seen corresponding path program 1 times [2022-11-16 12:26:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:43,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835817548] [2022-11-16 12:26:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:43,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:43,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835817548] [2022-11-16 12:26:43,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835817548] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:43,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630901285] [2022-11-16 12:26:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:43,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:43,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:43,497 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:43,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:26:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:43,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:26:43,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:43,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:43,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630901285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:43,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:26:43,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-16 12:26:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621788399] [2022-11-16 12:26:43,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:43,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:26:43,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:43,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:26:43,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:26:43,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-16 12:26:43,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 615 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) [2022-11-16 12:26:43,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:43,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-16 12:26:43,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:45,197 INFO L130 PetriNetUnfolder]: 557/3031 cut-off events. [2022-11-16 12:26:45,197 INFO L131 PetriNetUnfolder]: For 12198/12628 co-relation queries the response was YES. [2022-11-16 12:26:45,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7860 conditions, 3031 events. 557/3031 cut-off events. For 12198/12628 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29574 event pairs, 32 based on Foata normal form. 271/3130 useless extension candidates. Maximal degree in co-relation 7779. Up to 368 conditions per place. [2022-11-16 12:26:45,333 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 50 selfloop transitions, 58 changer transitions 0/222 dead transitions. [2022-11-16 12:26:45,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 222 transitions, 1339 flow [2022-11-16 12:26:45,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:26:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-16 12:26:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2871 transitions. [2022-11-16 12:26:45,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861111111111111 [2022-11-16 12:26:45,361 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2871 transitions. [2022-11-16 12:26:45,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2871 transitions. [2022-11-16 12:26:45,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:45,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2871 transitions. [2022-11-16 12:26:45,370 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) [2022-11-16 12:26:45,376 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) [2022-11-16 12:26:45,377 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) [2022-11-16 12:26:45,378 INFO L175 Difference]: Start difference. First operand has 173 places, 147 transitions, 615 flow. Second operand 27 states and 2871 transitions. [2022-11-16 12:26:45,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 222 transitions, 1339 flow [2022-11-16 12:26:45,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 222 transitions, 1332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:26:45,392 INFO L231 Difference]: Finished difference. Result has 208 places, 183 transitions, 1150 flow [2022-11-16 12:26:45,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=169, 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=1150, PETRI_PLACES=208, PETRI_TRANSITIONS=183} [2022-11-16 12:26:45,393 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 90 predicate places. [2022-11-16 12:26:45,393 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 183 transitions, 1150 flow [2022-11-16 12:26:45,394 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) [2022-11-16 12:26:45,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:45,395 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] [2022-11-16 12:26:45,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:45,600 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)] === [2022-11-16 12:26:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1973892873, now seen corresponding path program 1 times [2022-11-16 12:26:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:45,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691803257] [2022-11-16 12:26:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:45,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:26:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:45,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691803257] [2022-11-16 12:26:45,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691803257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:45,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:45,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310911533] [2022-11-16 12:26:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:45,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:45,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-16 12:26:45,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 183 transitions, 1150 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) [2022-11-16 12:26:45,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:45,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-16 12:26:45,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:48,137 INFO L130 PetriNetUnfolder]: 2877/10782 cut-off events. [2022-11-16 12:26:48,137 INFO L131 PetriNetUnfolder]: For 66622/68315 co-relation queries the response was YES. [2022-11-16 12:26:48,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35877 conditions, 10782 events. 2877/10782 cut-off events. For 66622/68315 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 118668 event pairs, 378 based on Foata normal form. 134/10498 useless extension candidates. Maximal degree in co-relation 35784. Up to 2014 conditions per place. [2022-11-16 12:26:48,280 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 241 selfloop transitions, 8 changer transitions 0/357 dead transitions. [2022-11-16 12:26:48,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 357 transitions, 3524 flow [2022-11-16 12:26:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2022-11-16 12:26:48,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2022-11-16 12:26:48,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2022-11-16 12:26:48,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2022-11-16 12:26:48,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:48,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2022-11-16 12:26:48,284 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) [2022-11-16 12:26:48,285 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) [2022-11-16 12:26:48,286 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) [2022-11-16 12:26:48,286 INFO L175 Difference]: Start difference. First operand has 208 places, 183 transitions, 1150 flow. Second operand 5 states and 508 transitions. [2022-11-16 12:26:48,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 357 transitions, 3524 flow [2022-11-16 12:26:48,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 357 transitions, 3077 flow, removed 184 selfloop flow, removed 8 redundant places. [2022-11-16 12:26:48,393 INFO L231 Difference]: Finished difference. Result has 204 places, 183 transitions, 1029 flow [2022-11-16 12:26:48,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=199, 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=1029, PETRI_PLACES=204, PETRI_TRANSITIONS=183} [2022-11-16 12:26:48,394 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 86 predicate places. [2022-11-16 12:26:48,394 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 183 transitions, 1029 flow [2022-11-16 12:26:48,403 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) [2022-11-16 12:26:48,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:48,403 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] [2022-11-16 12:26:48,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:26:48,404 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)] === [2022-11-16 12:26:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:48,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1061137122, now seen corresponding path program 1 times [2022-11-16 12:26:48,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:48,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197752022] [2022-11-16 12:26:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:48,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:48,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:48,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197752022] [2022-11-16 12:26:48,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197752022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:48,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314861108] [2022-11-16 12:26:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:48,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:48,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:48,482 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:48,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:26:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:48,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:26:48,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:48,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:48,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314861108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:48,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:26:48,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:26:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649331438] [2022-11-16 12:26:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:48,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:26:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:26:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:26:48,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-16 12:26:48,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 183 transitions, 1029 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) [2022-11-16 12:26:48,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:48,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-16 12:26:48,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:50,846 INFO L130 PetriNetUnfolder]: 2705/10078 cut-off events. [2022-11-16 12:26:50,847 INFO L131 PetriNetUnfolder]: For 68756/69876 co-relation queries the response was YES. [2022-11-16 12:26:50,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34690 conditions, 10078 events. 2705/10078 cut-off events. For 68756/69876 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 109487 event pairs, 715 based on Foata normal form. 134/9852 useless extension candidates. Maximal degree in co-relation 34598. Up to 1966 conditions per place. [2022-11-16 12:26:51,175 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 127 selfloop transitions, 5 changer transitions 0/240 dead transitions. [2022-11-16 12:26:51,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 240 transitions, 1813 flow [2022-11-16 12:26:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:26:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:26:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2022-11-16 12:26:51,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-11-16 12:26:51,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2022-11-16 12:26:51,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2022-11-16 12:26:51,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:51,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2022-11-16 12:26:51,190 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) [2022-11-16 12:26:51,192 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) [2022-11-16 12:26:51,193 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) [2022-11-16 12:26:51,194 INFO L175 Difference]: Start difference. First operand has 204 places, 183 transitions, 1029 flow. Second operand 4 states and 405 transitions. [2022-11-16 12:26:51,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 240 transitions, 1813 flow [2022-11-16 12:26:51,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 240 transitions, 1791 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 12:26:51,285 INFO L231 Difference]: Finished difference. Result has 202 places, 182 transitions, 1016 flow [2022-11-16 12:26:51,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=199, 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=1016, PETRI_PLACES=202, PETRI_TRANSITIONS=182} [2022-11-16 12:26:51,286 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 84 predicate places. [2022-11-16 12:26:51,287 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 182 transitions, 1016 flow [2022-11-16 12:26:51,287 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) [2022-11-16 12:26:51,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:51,288 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] [2022-11-16 12:26:51,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 12:26:51,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:26:51,493 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:26:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1340225536, now seen corresponding path program 1 times [2022-11-16 12:26:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:51,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705726357] [2022-11-16 12:26:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:51,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:51,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705726357] [2022-11-16 12:26:51,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705726357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:51,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484276970] [2022-11-16 12:26:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:51,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:51,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:51,667 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:51,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:26:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:51,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:26:51,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:52,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:52,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484276970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:52,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:26:52,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-16 12:26:52,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819845309] [2022-11-16 12:26:52,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:52,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:26:52,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:52,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:26:52,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:26:52,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-16 12:26:52,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 182 transitions, 1016 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) [2022-11-16 12:26:52,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:52,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-16 12:26:52,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:54,964 INFO L130 PetriNetUnfolder]: 1045/6529 cut-off events. [2022-11-16 12:26:54,964 INFO L131 PetriNetUnfolder]: For 103325/103854 co-relation queries the response was YES. [2022-11-16 12:26:55,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18520 conditions, 6529 events. 1045/6529 cut-off events. For 103325/103854 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 76011 event pairs, 32 based on Foata normal form. 596/6819 useless extension candidates. Maximal degree in co-relation 18425. Up to 637 conditions per place. [2022-11-16 12:26:55,076 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 68 selfloop transitions, 157 changer transitions 0/338 dead transitions. [2022-11-16 12:26:55,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 338 transitions, 2792 flow [2022-11-16 12:26:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 12:26:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 12:26:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4778 transitions. [2022-11-16 12:26:55,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848148148148148 [2022-11-16 12:26:55,091 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4778 transitions. [2022-11-16 12:26:55,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4778 transitions. [2022-11-16 12:26:55,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:55,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4778 transitions. [2022-11-16 12:26:55,106 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) [2022-11-16 12:26:55,114 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) [2022-11-16 12:26:55,116 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) [2022-11-16 12:26:55,116 INFO L175 Difference]: Start difference. First operand has 202 places, 182 transitions, 1016 flow. Second operand 45 states and 4778 transitions. [2022-11-16 12:26:55,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 338 transitions, 2792 flow [2022-11-16 12:26:55,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 338 transitions, 2754 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-16 12:26:55,170 INFO L231 Difference]: Finished difference. Result has 261 places, 285 transitions, 2577 flow [2022-11-16 12:26:55,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=196, 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=2577, PETRI_PLACES=261, PETRI_TRANSITIONS=285} [2022-11-16 12:26:55,171 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 143 predicate places. [2022-11-16 12:26:55,171 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 285 transitions, 2577 flow [2022-11-16 12:26:55,172 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) [2022-11-16 12:26:55,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:55,173 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] [2022-11-16 12:26:55,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:55,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:26:55,378 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)] === [2022-11-16 12:26:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash 966342485, now seen corresponding path program 2 times [2022-11-16 12:26:55,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:55,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267050135] [2022-11-16 12:26:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:55,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:55,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267050135] [2022-11-16 12:26:55,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267050135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:55,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50400736] [2022-11-16 12:26:55,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:26:55,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:55,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:55,649 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:55,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:26:55,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:26:55,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:26:55,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:26:55,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:56,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:56,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50400736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:56,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:26:56,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-11-16 12:26:56,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001580065] [2022-11-16 12:26:56,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:56,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 12:26:56,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 12:26:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:26:56,477 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-16 12:26:56,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 285 transitions, 2577 flow. Second operand has 35 states, 35 states have (on average 99.74285714285715) internal successors, (3491), 35 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:56,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:56,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-16 12:26:56,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:08,750 INFO L130 PetriNetUnfolder]: 11098/45135 cut-off events. [2022-11-16 12:27:08,750 INFO L131 PetriNetUnfolder]: For 274732/278984 co-relation queries the response was YES. [2022-11-16 12:27:09,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142328 conditions, 45135 events. 11098/45135 cut-off events. For 274732/278984 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 605671 event pairs, 281 based on Foata normal form. 598/44371 useless extension candidates. Maximal degree in co-relation 142211. Up to 6938 conditions per place. [2022-11-16 12:27:09,703 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 3451 selfloop transitions, 23 changer transitions 0/3576 dead transitions. [2022-11-16 12:27:09,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 3576 transitions, 49879 flow [2022-11-16 12:27:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:27:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 12:27:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2351 transitions. [2022-11-16 12:27:09,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8518115942028985 [2022-11-16 12:27:09,709 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2351 transitions. [2022-11-16 12:27:09,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2351 transitions. [2022-11-16 12:27:09,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:09,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2351 transitions. [2022-11-16 12:27:09,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 102.21739130434783) internal successors, (2351), 23 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:09,720 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) [2022-11-16 12:27:09,721 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) [2022-11-16 12:27:09,721 INFO L175 Difference]: Start difference. First operand has 261 places, 285 transitions, 2577 flow. Second operand 23 states and 2351 transitions. [2022-11-16 12:27:09,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 3576 transitions, 49879 flow [2022-11-16 12:27:10,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 3576 transitions, 44769 flow, removed 2037 selfloop flow, removed 15 redundant places. [2022-11-16 12:27:10,232 INFO L231 Difference]: Finished difference. Result has 273 places, 298 transitions, 2463 flow [2022-11-16 12:27:10,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=246, 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=2463, PETRI_PLACES=273, PETRI_TRANSITIONS=298} [2022-11-16 12:27:10,232 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 155 predicate places. [2022-11-16 12:27:10,233 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 298 transitions, 2463 flow [2022-11-16 12:27:10,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 99.74285714285715) internal successors, (3491), 35 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:10,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:10,234 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] [2022-11-16 12:27:10,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:10,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:27:10,434 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:27:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1886478671, now seen corresponding path program 2 times [2022-11-16 12:27:10,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:10,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314606593] [2022-11-16 12:27:10,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:10,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:10,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314606593] [2022-11-16 12:27:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314606593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:10,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391361939] [2022-11-16 12:27:10,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:27:10,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:10,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:10,720 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:10,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:27:10,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:27:10,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:10,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:27:10,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:11,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:11,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391361939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:11,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:11,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-16 12:27:11,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750661821] [2022-11-16 12:27:11,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:11,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:27:11,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:11,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:27:11,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:27:11,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-16 12:27:11,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 298 transitions, 2463 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) [2022-11-16 12:27:11,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:11,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-16 12:27:11,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:19,976 INFO L130 PetriNetUnfolder]: 3838/23293 cut-off events. [2022-11-16 12:27:19,976 INFO L131 PetriNetUnfolder]: For 764207/766169 co-relation queries the response was YES. [2022-11-16 12:27:20,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74834 conditions, 23293 events. 3838/23293 cut-off events. For 764207/766169 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 333720 event pairs, 96 based on Foata normal form. 1005/22806 useless extension candidates. Maximal degree in co-relation 74712. Up to 2016 conditions per place. [2022-11-16 12:27:20,926 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 106 selfloop transitions, 284 changer transitions 0/516 dead transitions. [2022-11-16 12:27:20,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 516 transitions, 5454 flow [2022-11-16 12:27:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-16 12:27:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-16 12:27:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5819 transitions. [2022-11-16 12:27:20,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816666666666667 [2022-11-16 12:27:20,945 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5819 transitions. [2022-11-16 12:27:20,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5819 transitions. [2022-11-16 12:27:20,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:20,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5819 transitions. [2022-11-16 12:27:20,956 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) [2022-11-16 12:27:20,965 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) [2022-11-16 12:27:20,968 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) [2022-11-16 12:27:20,968 INFO L175 Difference]: Start difference. First operand has 273 places, 298 transitions, 2463 flow. Second operand 55 states and 5819 transitions. [2022-11-16 12:27:20,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 516 transitions, 5454 flow [2022-11-16 12:27:21,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 516 transitions, 5410 flow, removed 11 selfloop flow, removed 10 redundant places. [2022-11-16 12:27:21,438 INFO L231 Difference]: Finished difference. Result has 332 places, 446 transitions, 4995 flow [2022-11-16 12:27:21,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=263, 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=4995, PETRI_PLACES=332, PETRI_TRANSITIONS=446} [2022-11-16 12:27:21,439 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 214 predicate places. [2022-11-16 12:27:21,440 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 446 transitions, 4995 flow [2022-11-16 12:27:21,441 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) [2022-11-16 12:27:21,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:21,441 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] [2022-11-16 12:27:21,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:21,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:21,646 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:27:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 456896474, now seen corresponding path program 1 times [2022-11-16 12:27:21,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:21,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172244129] [2022-11-16 12:27:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:21,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:21,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172244129] [2022-11-16 12:27:21,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172244129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:21,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829073621] [2022-11-16 12:27:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:21,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:21,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:21,834 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:21,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3423b068-a39e-42b7-b888-0a0637d9857c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:27:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:21,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:27:21,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:22,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:22,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829073621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:22,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:22,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-16 12:27:22,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080735264] [2022-11-16 12:27:22,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:22,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:27:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:22,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:27:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:27:22,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-16 12:27:22,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 446 transitions, 4995 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) [2022-11-16 12:27:22,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:22,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-16 12:27:22,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand