./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a --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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- 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-b5237d8 [2022-11-21 17:23:54,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:23:54,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:23:54,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:23:54,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:23:54,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:23:54,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:23:54,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:23:54,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:23:54,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:23:54,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:23:54,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:23:54,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:23:54,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:23:54,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:23:54,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:23:54,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:23:54,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:23:54,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:23:54,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:23:54,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:23:54,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:23:54,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:23:54,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:23:54,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:23:54,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:23:54,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:23:54,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:23:54,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:23:54,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:23:54,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:23:54,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:23:54,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:23:54,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:23:54,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:23:54,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:23:54,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:23:54,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:23:54,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:23:54,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:23:54,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:23:54,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:23:54,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:23:54,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:23:54,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:23:54,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:23:54,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:23:54,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:23:54,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:23:54,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:23:54,442 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:23:54,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:23:54,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:23:54,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:23:54,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:23:54,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:23:54,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:23:54,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:23:54,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:23:54,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:23:54,446 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:23:54,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:23:54,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:23:54,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:23:54,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:23:54,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:23:54,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:23:54,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:23:54,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:54,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:23:54,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:23:54,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:23:54,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:23:54,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:23:54,455 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:23:54,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:23:54,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:23:54,456 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_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-21 17:23:54,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:23:54,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:23:54,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:23:54,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:23:54,827 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:23:54,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-21 17:23:58,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:23:58,558 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:23:58,558 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-21 17:23:58,577 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/data/d8dd5acd6/71127fa506ed446aa2688c2268f8f4bd/FLAGb3b2bbd09 [2022-11-21 17:23:58,594 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/data/d8dd5acd6/71127fa506ed446aa2688c2268f8f4bd [2022-11-21 17:23:58,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:23:58,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:23:58,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:58,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:23:58,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:23:58,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:58" (1/1) ... [2022-11-21 17:23:58,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6990241b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:58, skipping insertion in model container [2022-11-21 17:23:58,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:58" (1/1) ... [2022-11-21 17:23:58,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:23:58,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:23:59,338 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 17:23:59,338 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 17:23:59,340 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 17:23:59,342 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 17:23:59,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:23:59,421 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:23:59,464 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 17:23:59,464 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 17:23:59,465 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 17:23:59,466 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 17:23:59,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:23:59,556 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:23:59,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59 WrapperNode [2022-11-21 17:23:59,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:59,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:23:59,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:23:59,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:23:59,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,642 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2022-11-21 17:23:59,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:23:59,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:23:59,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:23:59,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:23:59,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,705 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:23:59,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:23:59,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:23:59,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:23:59,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:59,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:23:59,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:23:59,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:23:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-21 17:23:59,823 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-21 17:23:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:23:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 17:23:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:23:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:23:59,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:23:59,824 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 17:23:59,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:23:59,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:23:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 17:23:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:23:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:23:59,827 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:24:00,090 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:24:00,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:24:00,426 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:24:00,436 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:24:00,437 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 17:24:00,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:24:00 BoogieIcfgContainer [2022-11-21 17:24:00,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:24:00,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:24:00,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:24:00,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:24:00,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:23:58" (1/3) ... [2022-11-21 17:24:00,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bffb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:24:00, skipping insertion in model container [2022-11-21 17:24:00,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59" (2/3) ... [2022-11-21 17:24:00,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bffb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:24:00, skipping insertion in model container [2022-11-21 17:24:00,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:24:00" (3/3) ... [2022-11-21 17:24:00,452 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-21 17:24:00,463 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:24:00,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:24:00,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-21 17:24:00,478 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:24:00,675 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 17:24:00,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 203 transitions, 416 flow [2022-11-21 17:24:00,860 INFO L130 PetriNetUnfolder]: 14/201 cut-off events. [2022-11-21 17:24:00,860 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:24:00,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 14/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 503 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-21 17:24:00,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 203 transitions, 416 flow [2022-11-21 17:24:00,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 201 transitions, 408 flow [2022-11-21 17:24:00,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:24:00,896 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;@478cbc27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:24:00,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-21 17:24:00,916 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-11-21 17:24:00,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:24:00,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:00,918 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] [2022-11-21 17:24:00,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:00,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1502815099, now seen corresponding path program 1 times [2022-11-21 17:24:00,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:00,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24015086] [2022-11-21 17:24:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:00,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:01,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:01,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759496564] [2022-11-21 17:24:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:01,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:01,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:01,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:01,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:24:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:01,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:24:01,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:01,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:01,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:01,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24015086] [2022-11-21 17:24:01,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:01,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759496564] [2022-11-21 17:24:01,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759496564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:01,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:01,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:24:01,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361317962] [2022-11-21 17:24:01,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:01,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:01,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:01,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 203 [2022-11-21 17:24:01,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 201 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:01,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:01,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 203 [2022-11-21 17:24:01,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:01,645 INFO L130 PetriNetUnfolder]: 7/253 cut-off events. [2022-11-21 17:24:01,647 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 17:24:01,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 253 events. 7/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 749 event pairs, 0 based on Foata normal form. 8/234 useless extension candidates. Maximal degree in co-relation 221. Up to 17 conditions per place. [2022-11-21 17:24:01,656 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/202 dead transitions. [2022-11-21 17:24:01,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 202 transitions, 460 flow [2022-11-21 17:24:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:24:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-11-21 17:24:01,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9441707717569786 [2022-11-21 17:24:01,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-11-21 17:24:01,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-11-21 17:24:01,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:01,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-11-21 17:24:01,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:01,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:01,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:01,736 INFO L175 Difference]: Start difference. First operand has 194 places, 201 transitions, 408 flow. Second operand 3 states and 575 transitions. [2022-11-21 17:24:01,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 202 transitions, 460 flow [2022-11-21 17:24:01,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 202 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:24:01,750 INFO L231 Difference]: Finished difference. Result has 195 places, 194 transitions, 406 flow [2022-11-21 17:24:01,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=195, PETRI_TRANSITIONS=194} [2022-11-21 17:24:01,761 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 1 predicate places. [2022-11-21 17:24:01,762 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 194 transitions, 406 flow [2022-11-21 17:24:01,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:01,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:01,768 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] [2022-11-21 17:24:01,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:01,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 17:24:01,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:01,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -657374059, now seen corresponding path program 1 times [2022-11-21 17:24:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:01,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546957197] [2022-11-21 17:24:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:02,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:02,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546957197] [2022-11-21 17:24:02,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546957197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:02,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:02,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490812655] [2022-11-21 17:24:02,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:02,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:02,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:02,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 203 [2022-11-21 17:24:02,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 194 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:02,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 203 [2022-11-21 17:24:02,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:02,420 INFO L130 PetriNetUnfolder]: 7/337 cut-off events. [2022-11-21 17:24:02,420 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 17:24:02,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 337 events. 7/337 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 717 event pairs, 0 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 246. Up to 22 conditions per place. [2022-11-21 17:24:02,423 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 17 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2022-11-21 17:24:02,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 200 transitions, 456 flow [2022-11-21 17:24:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:02,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:24:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-11-21 17:24:02,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9326765188834154 [2022-11-21 17:24:02,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-11-21 17:24:02,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-11-21 17:24:02,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:02,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-11-21 17:24:02,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,433 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 406 flow. Second operand 3 states and 568 transitions. [2022-11-21 17:24:02,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 200 transitions, 456 flow [2022-11-21 17:24:02,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 200 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:24:02,440 INFO L231 Difference]: Finished difference. Result has 197 places, 195 transitions, 420 flow [2022-11-21 17:24:02,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=197, PETRI_TRANSITIONS=195} [2022-11-21 17:24:02,441 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 3 predicate places. [2022-11-21 17:24:02,442 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 195 transitions, 420 flow [2022-11-21 17:24:02,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:02,443 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:02,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:24:02,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash -371900578, now seen corresponding path program 1 times [2022-11-21 17:24:02,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:02,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467220096] [2022-11-21 17:24:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:02,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:02,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:02,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733543540] [2022-11-21 17:24:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:02,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:02,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:02,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:02,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:24:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:02,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:24:02,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:02,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:02,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:02,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467220096] [2022-11-21 17:24:02,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:02,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733543540] [2022-11-21 17:24:02,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733543540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:02,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:02,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:02,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801279433] [2022-11-21 17:24:02,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:02,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:02,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:02,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-21 17:24:02,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 195 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:02,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-21 17:24:02,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:03,036 INFO L130 PetriNetUnfolder]: 7/337 cut-off events. [2022-11-21 17:24:03,045 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-21 17:24:03,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 337 events. 7/337 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 717 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 199. Up to 30 conditions per place. [2022-11-21 17:24:03,050 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 23 selfloop transitions, 5 changer transitions 0/204 dead transitions. [2022-11-21 17:24:03,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 204 transitions, 494 flow [2022-11-21 17:24:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:24:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:24:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-21 17:24:03,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9004926108374385 [2022-11-21 17:24:03,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-21 17:24:03,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-21 17:24:03,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:03,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-21 17:24:03,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,062 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,063 INFO L175 Difference]: Start difference. First operand has 197 places, 195 transitions, 420 flow. Second operand 5 states and 914 transitions. [2022-11-21 17:24:03,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 204 transitions, 494 flow [2022-11-21 17:24:03,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 204 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:24:03,068 INFO L231 Difference]: Finished difference. Result has 204 places, 198 transitions, 452 flow [2022-11-21 17:24:03,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=204, PETRI_TRANSITIONS=198} [2022-11-21 17:24:03,071 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 10 predicate places. [2022-11-21 17:24:03,071 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 198 transitions, 452 flow [2022-11-21 17:24:03,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:03,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:03,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:03,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:03,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1355984203, now seen corresponding path program 1 times [2022-11-21 17:24:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:03,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516414364] [2022-11-21 17:24:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:03,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:03,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:03,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651525314] [2022-11-21 17:24:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:03,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:03,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:03,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:24:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:03,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:24:03,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:03,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:03,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516414364] [2022-11-21 17:24:03,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:03,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651525314] [2022-11-21 17:24:03,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651525314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:03,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:03,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:03,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093309410] [2022-11-21 17:24:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:03,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:03,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:03,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-21 17:24:03,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 198 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:03,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-21 17:24:03,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:03,710 INFO L130 PetriNetUnfolder]: 7/333 cut-off events. [2022-11-21 17:24:03,710 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-21 17:24:03,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 333 events. 7/333 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 709 event pairs, 0 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 248. Up to 28 conditions per place. [2022-11-21 17:24:03,714 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 16 selfloop transitions, 5 changer transitions 0/197 dead transitions. [2022-11-21 17:24:03,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 197 transitions, 492 flow [2022-11-21 17:24:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:24:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:24:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 727 transitions. [2022-11-21 17:24:03,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.895320197044335 [2022-11-21 17:24:03,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 727 transitions. [2022-11-21 17:24:03,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 727 transitions. [2022-11-21 17:24:03,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:03,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 727 transitions. [2022-11-21 17:24:03,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,723 INFO L175 Difference]: Start difference. First operand has 204 places, 198 transitions, 452 flow. Second operand 4 states and 727 transitions. [2022-11-21 17:24:03,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 197 transitions, 492 flow [2022-11-21 17:24:03,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 197 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:24:03,730 INFO L231 Difference]: Finished difference. Result has 204 places, 197 transitions, 454 flow [2022-11-21 17:24:03,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=454, PETRI_PLACES=204, PETRI_TRANSITIONS=197} [2022-11-21 17:24:03,732 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 10 predicate places. [2022-11-21 17:24:03,733 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 197 transitions, 454 flow [2022-11-21 17:24:03,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:03,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:03,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:03,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:03,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:03,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 682359355, now seen corresponding path program 1 times [2022-11-21 17:24:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:03,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145670543] [2022-11-21 17:24:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:03,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:03,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294239951] [2022-11-21 17:24:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:03,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:03,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:03,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:03,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:24:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:04,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:24:04,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:04,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:04,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:04,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145670543] [2022-11-21 17:24:04,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:04,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294239951] [2022-11-21 17:24:04,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294239951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:04,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:04,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 17:24:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315376468] [2022-11-21 17:24:04,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:04,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:24:04,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:04,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:24:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:24:04,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-21 17:24:04,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 197 transitions, 454 flow. Second operand has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:04,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:04,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-21 17:24:04,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:04,528 INFO L130 PetriNetUnfolder]: 7/419 cut-off events. [2022-11-21 17:24:04,528 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-21 17:24:04,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 419 events. 7/419 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 461 event pairs, 0 based on Foata normal form. 6/407 useless extension candidates. Maximal degree in co-relation 315. Up to 22 conditions per place. [2022-11-21 17:24:04,531 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 29 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2022-11-21 17:24:04,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 215 transitions, 586 flow [2022-11-21 17:24:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:24:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:24:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1634 transitions. [2022-11-21 17:24:04,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8943623426382047 [2022-11-21 17:24:04,535 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1634 transitions. [2022-11-21 17:24:04,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1634 transitions. [2022-11-21 17:24:04,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:04,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1634 transitions. [2022-11-21 17:24:04,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.55555555555554) internal successors, (1634), 9 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:04,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:04,574 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:04,574 INFO L175 Difference]: Start difference. First operand has 204 places, 197 transitions, 454 flow. Second operand 9 states and 1634 transitions. [2022-11-21 17:24:04,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 215 transitions, 586 flow [2022-11-21 17:24:04,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 215 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:24:04,579 INFO L231 Difference]: Finished difference. Result has 215 places, 201 transitions, 504 flow [2022-11-21 17:24:04,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=215, PETRI_TRANSITIONS=201} [2022-11-21 17:24:04,580 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 21 predicate places. [2022-11-21 17:24:04,580 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 201 transitions, 504 flow [2022-11-21 17:24:04,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:04,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:04,583 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 17:24:04,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-21 17:24:04,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:04,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1573270686, now seen corresponding path program 1 times [2022-11-21 17:24:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:04,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487215545] [2022-11-21 17:24:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:04,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:04,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952189570] [2022-11-21 17:24:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:04,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:04,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:04,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:04,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:24:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:05,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:24:05,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:05,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:05,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:05,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487215545] [2022-11-21 17:24:05,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:05,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952189570] [2022-11-21 17:24:05,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952189570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:05,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:05,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 17:24:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14439097] [2022-11-21 17:24:05,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:05,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:24:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:24:05,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:24:05,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-21 17:24:05,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 201 transitions, 504 flow. Second operand has 14 states, 14 states have (on average 180.64285714285714) internal successors, (2529), 14 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:05,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-21 17:24:05,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:05,929 INFO L130 PetriNetUnfolder]: 13/641 cut-off events. [2022-11-21 17:24:05,930 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-21 17:24:05,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 641 events. 13/641 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1265 event pairs, 0 based on Foata normal form. 4/609 useless extension candidates. Maximal degree in co-relation 535. Up to 19 conditions per place. [2022-11-21 17:24:05,933 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 37 selfloop transitions, 16 changer transitions 0/229 dead transitions. [2022-11-21 17:24:05,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 229 transitions, 718 flow [2022-11-21 17:24:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:24:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 17:24:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2710 transitions. [2022-11-21 17:24:05,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8899835796387521 [2022-11-21 17:24:05,941 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2710 transitions. [2022-11-21 17:24:05,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2710 transitions. [2022-11-21 17:24:05,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:05,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2710 transitions. [2022-11-21 17:24:05,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 180.66666666666666) internal successors, (2710), 15 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,960 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,960 INFO L175 Difference]: Start difference. First operand has 215 places, 201 transitions, 504 flow. Second operand 15 states and 2710 transitions. [2022-11-21 17:24:05,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 229 transitions, 718 flow [2022-11-21 17:24:05,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 700 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 17:24:05,971 INFO L231 Difference]: Finished difference. Result has 224 places, 205 transitions, 553 flow [2022-11-21 17:24:05,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=553, PETRI_PLACES=224, PETRI_TRANSITIONS=205} [2022-11-21 17:24:05,975 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 30 predicate places. [2022-11-21 17:24:05,975 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 205 transitions, 553 flow [2022-11-21 17:24:05,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 180.64285714285714) internal successors, (2529), 14 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:05,977 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 17:24:05,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:06,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:06,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:06,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2027945851, now seen corresponding path program 2 times [2022-11-21 17:24:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:06,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508972104] [2022-11-21 17:24:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:06,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:06,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:06,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324586373] [2022-11-21 17:24:06,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:24:06,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:06,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:06,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:06,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:24:06,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:24:06,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:06,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:24:06,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 17:24:06,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:06,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508972104] [2022-11-21 17:24:06,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:06,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324586373] [2022-11-21 17:24:06,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324586373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:06,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:06,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:06,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270634751] [2022-11-21 17:24:06,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:06,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:06,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-21 17:24:06,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 205 transitions, 553 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:06,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:06,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-21 17:24:06,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:06,797 INFO L130 PetriNetUnfolder]: 13/641 cut-off events. [2022-11-21 17:24:06,798 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-21 17:24:06,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 641 events. 13/641 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1261 event pairs, 0 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 557. Up to 50 conditions per place. [2022-11-21 17:24:06,801 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 29 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-11-21 17:24:06,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 217 transitions, 645 flow [2022-11-21 17:24:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:24:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:24:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 905 transitions. [2022-11-21 17:24:06,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8916256157635468 [2022-11-21 17:24:06,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 905 transitions. [2022-11-21 17:24:06,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 905 transitions. [2022-11-21 17:24:06,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:06,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 905 transitions. [2022-11-21 17:24:06,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:06,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:06,810 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:06,810 INFO L175 Difference]: Start difference. First operand has 224 places, 205 transitions, 553 flow. Second operand 5 states and 905 transitions. [2022-11-21 17:24:06,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 217 transitions, 645 flow [2022-11-21 17:24:06,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 217 transitions, 586 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-21 17:24:06,816 INFO L231 Difference]: Finished difference. Result has 219 places, 208 transitions, 528 flow [2022-11-21 17:24:06,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=528, PETRI_PLACES=219, PETRI_TRANSITIONS=208} [2022-11-21 17:24:06,817 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 25 predicate places. [2022-11-21 17:24:06,817 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 208 transitions, 528 flow [2022-11-21 17:24:06,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:06,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:06,818 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 17:24:06,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:07,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:07,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:07,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1558187717, now seen corresponding path program 1 times [2022-11-21 17:24:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:07,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409423433] [2022-11-21 17:24:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:07,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:07,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:07,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119926512] [2022-11-21 17:24:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:07,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:07,072 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:07,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:24:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:24:07,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:07,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:07,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:07,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409423433] [2022-11-21 17:24:07,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:07,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119926512] [2022-11-21 17:24:07,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119926512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:07,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:07,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 17:24:07,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306039413] [2022-11-21 17:24:07,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:07,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:24:07,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:07,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:24:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:24:07,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-21 17:24:07,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 208 transitions, 528 flow. Second operand has 16 states, 16 states have (on average 180.6875) internal successors, (2891), 16 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:07,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:07,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-21 17:24:07,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:08,267 INFO L130 PetriNetUnfolder]: 7/753 cut-off events. [2022-11-21 17:24:08,268 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-21 17:24:08,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 753 events. 7/753 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 482 event pairs, 0 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 602. Up to 20 conditions per place. [2022-11-21 17:24:08,271 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 60 selfloop transitions, 22 changer transitions 0/261 dead transitions. [2022-11-21 17:24:08,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 261 transitions, 885 flow [2022-11-21 17:24:08,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:24:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 17:24:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3802 transitions. [2022-11-21 17:24:08,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8918601923528032 [2022-11-21 17:24:08,280 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3802 transitions. [2022-11-21 17:24:08,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3802 transitions. [2022-11-21 17:24:08,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:08,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3802 transitions. [2022-11-21 17:24:08,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 181.04761904761904) internal successors, (3802), 21 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,301 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,301 INFO L175 Difference]: Start difference. First operand has 219 places, 208 transitions, 528 flow. Second operand 21 states and 3802 transitions. [2022-11-21 17:24:08,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 261 transitions, 885 flow [2022-11-21 17:24:08,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 261 transitions, 875 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-21 17:24:08,307 INFO L231 Difference]: Finished difference. Result has 243 places, 217 transitions, 638 flow [2022-11-21 17:24:08,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=638, PETRI_PLACES=243, PETRI_TRANSITIONS=217} [2022-11-21 17:24:08,308 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 49 predicate places. [2022-11-21 17:24:08,308 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 217 transitions, 638 flow [2022-11-21 17:24:08,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 180.6875) internal successors, (2891), 16 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:08,310 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:08,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:08,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:08,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:08,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash -701389125, now seen corresponding path program 2 times [2022-11-21 17:24:08,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:08,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380284269] [2022-11-21 17:24:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:08,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:08,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:08,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741149792] [2022-11-21 17:24:08,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:24:08,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:08,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:08,585 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:08,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:24:08,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:24:08,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:08,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:24:08,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-21 17:24:09,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:09,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:09,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380284269] [2022-11-21 17:24:09,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:09,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741149792] [2022-11-21 17:24:09,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741149792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:09,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:09,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:09,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195571689] [2022-11-21 17:24:09,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:09,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:09,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:09,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-21 17:24:09,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 217 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:09,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-21 17:24:09,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:09,539 INFO L130 PetriNetUnfolder]: 7/751 cut-off events. [2022-11-21 17:24:09,539 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-21 17:24:09,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 751 events. 7/751 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 480 event pairs, 0 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 603. Up to 80 conditions per place. [2022-11-21 17:24:09,542 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 18 selfloop transitions, 5 changer transitions 0/215 dead transitions. [2022-11-21 17:24:09,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 215 transitions, 674 flow [2022-11-21 17:24:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:24:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:24:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 717 transitions. [2022-11-21 17:24:09,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830049261083743 [2022-11-21 17:24:09,545 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 717 transitions. [2022-11-21 17:24:09,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 717 transitions. [2022-11-21 17:24:09,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:09,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 717 transitions. [2022-11-21 17:24:09,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,550 INFO L175 Difference]: Start difference. First operand has 243 places, 217 transitions, 638 flow. Second operand 4 states and 717 transitions. [2022-11-21 17:24:09,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 215 transitions, 674 flow [2022-11-21 17:24:09,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 215 transitions, 651 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-21 17:24:09,556 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 615 flow [2022-11-21 17:24:09,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=615, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-11-21 17:24:09,557 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 40 predicate places. [2022-11-21 17:24:09,557 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 615 flow [2022-11-21 17:24:09,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:09,559 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:09,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:09,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:09,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:09,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:09,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1660508075, now seen corresponding path program 1 times [2022-11-21 17:24:09,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:09,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991424032] [2022-11-21 17:24:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:09,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:09,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634566842] [2022-11-21 17:24:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:09,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:09,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:09,830 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:09,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:24:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:10,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 17:24:10,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:10,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:11,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991424032] [2022-11-21 17:24:11,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:11,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634566842] [2022-11-21 17:24:11,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634566842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:11,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:11,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-21 17:24:11,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499120590] [2022-11-21 17:24:11,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:11,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:24:11,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:11,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:24:11,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:24:11,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-21 17:24:11,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 615 flow. Second operand has 32 states, 32 states have (on average 181.125) internal successors, (5796), 32 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:11,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-21 17:24:11,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:12,773 INFO L130 PetriNetUnfolder]: 7/1423 cut-off events. [2022-11-21 17:24:12,773 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-21 17:24:12,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1423 events. 7/1423 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 519 event pairs, 0 based on Foata normal form. 16/1425 useless extension candidates. Maximal degree in co-relation 1192. Up to 38 conditions per place. [2022-11-21 17:24:12,778 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 124 selfloop transitions, 46 changer transitions 0/347 dead transitions. [2022-11-21 17:24:12,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 347 transitions, 1551 flow [2022-11-21 17:24:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 17:24:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 17:24:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8142 transitions. [2022-11-21 17:24:12,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8912972085385878 [2022-11-21 17:24:12,793 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8142 transitions. [2022-11-21 17:24:12,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8142 transitions. [2022-11-21 17:24:12,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:12,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8142 transitions. [2022-11-21 17:24:12,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 180.93333333333334) internal successors, (8142), 45 states have internal predecessors, (8142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:12,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 203.0) internal successors, (9338), 46 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:12,834 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 203.0) internal successors, (9338), 46 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:12,835 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 615 flow. Second operand 45 states and 8142 transitions. [2022-11-21 17:24:12,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 347 transitions, 1551 flow [2022-11-21 17:24:12,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 347 transitions, 1541 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:24:12,845 INFO L231 Difference]: Finished difference. Result has 284 places, 240 transitions, 928 flow [2022-11-21 17:24:12,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=928, PETRI_PLACES=284, PETRI_TRANSITIONS=240} [2022-11-21 17:24:12,847 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 90 predicate places. [2022-11-21 17:24:12,847 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 240 transitions, 928 flow [2022-11-21 17:24:12,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 181.125) internal successors, (5796), 32 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:12,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:12,850 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:12,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:13,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 17:24:13,063 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2076259157, now seen corresponding path program 2 times [2022-11-21 17:24:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:13,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429609986] [2022-11-21 17:24:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:13,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:13,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524325556] [2022-11-21 17:24:13,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:24:13,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:13,205 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:13,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:24:13,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:24:13,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:13,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:24:13,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-21 17:24:13,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:13,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429609986] [2022-11-21 17:24:13,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:13,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524325556] [2022-11-21 17:24:13,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524325556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:13,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:13,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:13,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686342118] [2022-11-21 17:24:13,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:13,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:13,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:13,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:13,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-21 17:24:13,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 240 transitions, 928 flow. Second operand has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:13,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:13,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-21 17:24:13,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:14,412 INFO L130 PetriNetUnfolder]: 23/1479 cut-off events. [2022-11-21 17:24:14,412 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-11-21 17:24:14,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2156 conditions, 1479 events. 23/1479 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 980 event pairs, 3 based on Foata normal form. 0/1459 useless extension candidates. Maximal degree in co-relation 1885. Up to 38 conditions per place. [2022-11-21 17:24:14,418 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 16 selfloop transitions, 4 changer transitions 0/242 dead transitions. [2022-11-21 17:24:14,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 242 transitions, 978 flow [2022-11-21 17:24:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:24:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:24:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 906 transitions. [2022-11-21 17:24:14,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8926108374384236 [2022-11-21 17:24:14,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 906 transitions. [2022-11-21 17:24:14,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 906 transitions. [2022-11-21 17:24:14,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:14,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 906 transitions. [2022-11-21 17:24:14,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:14,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:14,426 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:14,426 INFO L175 Difference]: Start difference. First operand has 284 places, 240 transitions, 928 flow. Second operand 5 states and 906 transitions. [2022-11-21 17:24:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 242 transitions, 978 flow [2022-11-21 17:24:14,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 242 transitions, 921 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-21 17:24:14,436 INFO L231 Difference]: Finished difference. Result has 269 places, 239 transitions, 877 flow [2022-11-21 17:24:14,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=877, PETRI_PLACES=269, PETRI_TRANSITIONS=239} [2022-11-21 17:24:14,437 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 75 predicate places. [2022-11-21 17:24:14,437 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 239 transitions, 877 flow [2022-11-21 17:24:14,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:14,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:14,438 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:14,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:14,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 17:24:14,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2076228372, now seen corresponding path program 1 times [2022-11-21 17:24:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:14,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513512123] [2022-11-21 17:24:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:14,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:14,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:14,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529908984] [2022-11-21 17:24:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:14,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:14,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:14,774 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:14,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:24:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:15,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 17:24:15,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:17,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:18,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:18,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513512123] [2022-11-21 17:24:18,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:18,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529908984] [2022-11-21 17:24:18,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529908984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:18,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:18,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-21 17:24:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489680136] [2022-11-21 17:24:18,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:18,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-21 17:24:18,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-21 17:24:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-21 17:24:18,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-21 17:24:18,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 239 transitions, 877 flow. Second operand has 61 states, 61 states have (on average 181.37704918032787) internal successors, (11064), 61 states have internal predecessors, (11064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:18,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:18,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-21 17:24:18,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:22,828 INFO L130 PetriNetUnfolder]: 7/2682 cut-off events. [2022-11-21 17:24:22,828 INFO L131 PetriNetUnfolder]: For 4943/4943 co-relation queries the response was YES. [2022-11-21 17:24:22,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 2682 events. 7/2682 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 584 event pairs, 0 based on Foata normal form. 30/2700 useless extension candidates. Maximal degree in co-relation 4381. Up to 96 conditions per place. [2022-11-21 17:24:22,836 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 244 selfloop transitions, 91 changer transitions 0/511 dead transitions. [2022-11-21 17:24:22,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 511 transitions, 2959 flow [2022-11-21 17:24:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-21 17:24:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-21 17:24:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 16279 transitions. [2022-11-21 17:24:22,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891023535851122 [2022-11-21 17:24:22,861 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 16279 transitions. [2022-11-21 17:24:22,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 16279 transitions. [2022-11-21 17:24:22,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:22,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 16279 transitions. [2022-11-21 17:24:22,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 180.87777777777777) internal successors, (16279), 90 states have internal predecessors, (16279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:22,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 203.0) internal successors, (18473), 91 states have internal predecessors, (18473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:22,921 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 203.0) internal successors, (18473), 91 states have internal predecessors, (18473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:22,921 INFO L175 Difference]: Start difference. First operand has 269 places, 239 transitions, 877 flow. Second operand 90 states and 16279 transitions. [2022-11-21 17:24:22,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 511 transitions, 2959 flow [2022-11-21 17:24:22,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 511 transitions, 2951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:24:22,942 INFO L231 Difference]: Finished difference. Result has 370 places, 285 transitions, 1558 flow [2022-11-21 17:24:22,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1558, PETRI_PLACES=370, PETRI_TRANSITIONS=285} [2022-11-21 17:24:22,943 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 176 predicate places. [2022-11-21 17:24:22,943 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 285 transitions, 1558 flow [2022-11-21 17:24:22,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 181.37704918032787) internal successors, (11064), 61 states have internal predecessors, (11064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:22,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:22,947 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:22,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:23,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:23,158 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:23,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:23,159 INFO L85 PathProgramCache]: Analyzing trace with hash 567278534, now seen corresponding path program 2 times [2022-11-21 17:24:23,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:23,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099487971] [2022-11-21 17:24:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:23,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:23,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:23,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200145877] [2022-11-21 17:24:23,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:24:23,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:23,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:23,436 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:23,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 17:24:24,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:24:24,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:24,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 5188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:24:24,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 17:24:27,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 17:24:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:28,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099487971] [2022-11-21 17:24:28,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:28,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200145877] [2022-11-21 17:24:28,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200145877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:28,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:28,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 17:24:28,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698197262] [2022-11-21 17:24:28,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:28,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:24:28,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:28,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:24:28,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:24:28,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-21 17:24:28,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 285 transitions, 1558 flow. Second operand has 8 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:28,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:28,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-21 17:24:28,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:31,698 INFO L130 PetriNetUnfolder]: 8/3988 cut-off events. [2022-11-21 17:24:31,698 INFO L131 PetriNetUnfolder]: For 4582/4582 co-relation queries the response was YES. [2022-11-21 17:24:31,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 3988 events. 8/3988 cut-off events. For 4582/4582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 530 event pairs, 0 based on Foata normal form. 3/3978 useless extension candidates. Maximal degree in co-relation 4615. Up to 187 conditions per place. [2022-11-21 17:24:31,708 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 38 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2022-11-21 17:24:31,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 309 transitions, 1714 flow [2022-11-21 17:24:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:24:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:24:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1616 transitions. [2022-11-21 17:24:31,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845101258894362 [2022-11-21 17:24:31,712 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1616 transitions. [2022-11-21 17:24:31,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1616 transitions. [2022-11-21 17:24:31,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:31,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1616 transitions. [2022-11-21 17:24:31,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.55555555555554) internal successors, (1616), 9 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:31,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:31,719 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:31,719 INFO L175 Difference]: Start difference. First operand has 370 places, 285 transitions, 1558 flow. Second operand 9 states and 1616 transitions. [2022-11-21 17:24:31,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 309 transitions, 1714 flow [2022-11-21 17:24:31,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 309 transitions, 1595 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-21 17:24:31,754 INFO L231 Difference]: Finished difference. Result has 341 places, 289 transitions, 1495 flow [2022-11-21 17:24:31,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1495, PETRI_PLACES=341, PETRI_TRANSITIONS=289} [2022-11-21 17:24:31,755 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 147 predicate places. [2022-11-21 17:24:31,755 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 289 transitions, 1495 flow [2022-11-21 17:24:31,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:31,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:31,757 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 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] [2022-11-21 17:24:31,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:31,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:31,974 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash -376950072, now seen corresponding path program 1 times [2022-11-21 17:24:31,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:31,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18638465] [2022-11-21 17:24:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:31,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:32,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:32,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099834829] [2022-11-21 17:24:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:32,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:32,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:32,249 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:32,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 17:24:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:39,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 5325 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 17:24:39,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 17:24:41,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 17:24:43,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:43,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18638465] [2022-11-21 17:24:43,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:43,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099834829] [2022-11-21 17:24:43,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099834829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:43,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:43,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 17:24:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538515724] [2022-11-21 17:24:43,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:43,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:24:43,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:24:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:24:43,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2022-11-21 17:24:43,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 289 transitions, 1495 flow. Second operand has 14 states, 14 states have (on average 169.35714285714286) internal successors, (2371), 14 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:43,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:43,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2022-11-21 17:24:43,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:46,445 INFO L130 PetriNetUnfolder]: 8/3956 cut-off events. [2022-11-21 17:24:46,446 INFO L131 PetriNetUnfolder]: For 4795/4795 co-relation queries the response was YES. [2022-11-21 17:24:46,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6961 conditions, 3956 events. 8/3956 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 32/3975 useless extension candidates. Maximal degree in co-relation 4756. Up to 307 conditions per place. [2022-11-21 17:24:46,454 INFO L137 encePairwiseOnDemand]: 189/203 looper letters, 224 selfloop transitions, 144 changer transitions 0/529 dead transitions. [2022-11-21 17:24:46,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 529 transitions, 4355 flow [2022-11-21 17:24:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 17:24:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 17:24:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4039 transitions. [2022-11-21 17:24:46,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290229885057471 [2022-11-21 17:24:46,461 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4039 transitions. [2022-11-21 17:24:46,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4039 transitions. [2022-11-21 17:24:46,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:46,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4039 transitions. [2022-11-21 17:24:46,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 168.29166666666666) internal successors, (4039), 24 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:46,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 203.0) internal successors, (5075), 25 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:46,479 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 203.0) internal successors, (5075), 25 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:46,480 INFO L175 Difference]: Start difference. First operand has 341 places, 289 transitions, 1495 flow. Second operand 24 states and 4039 transitions. [2022-11-21 17:24:46,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 529 transitions, 4355 flow [2022-11-21 17:24:46,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 529 transitions, 4339 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 17:24:46,524 INFO L231 Difference]: Finished difference. Result has 365 places, 420 transitions, 3534 flow [2022-11-21 17:24:46,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3534, PETRI_PLACES=365, PETRI_TRANSITIONS=420} [2022-11-21 17:24:46,525 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 171 predicate places. [2022-11-21 17:24:46,525 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 420 transitions, 3534 flow [2022-11-21 17:24:46,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 169.35714285714286) internal successors, (2371), 14 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:46,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:46,526 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 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] [2022-11-21 17:24:46,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:46,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:24:46,740 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:24:46,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1064525364, now seen corresponding path program 1 times [2022-11-21 17:24:46,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:46,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345995859] [2022-11-21 17:24:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:46,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:46,967 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:24:46,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744615560] [2022-11-21 17:24:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:46,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:46,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:46,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:46,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 17:24:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:54,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 17:24:54,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 17:24:56,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:56,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345995859] [2022-11-21 17:24:56,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:24:56,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744615560] [2022-11-21 17:24:56,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744615560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:56,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:56,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:24:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000747961] [2022-11-21 17:24:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:56,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:24:56,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:24:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:24:56,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2022-11-21 17:24:56,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 420 transitions, 3534 flow. Second operand has 11 states, 11 states have (on average 168.45454545454547) internal successors, (1853), 11 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:56,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:56,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2022-11-21 17:24:56,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:59,734 INFO L130 PetriNetUnfolder]: 8/3899 cut-off events. [2022-11-21 17:24:59,734 INFO L131 PetriNetUnfolder]: For 7134/7134 co-relation queries the response was YES. [2022-11-21 17:24:59,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 3899 events. 8/3899 cut-off events. For 7134/7134 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 296 event pairs, 0 based on Foata normal form. 57/3943 useless extension candidates. Maximal degree in co-relation 4931. Up to 370 conditions per place. [2022-11-21 17:24:59,747 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 208 selfloop transitions, 139 changer transitions 0/508 dead transitions. [2022-11-21 17:24:59,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 508 transitions, 5010 flow [2022-11-21 17:24:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:24:59,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 17:24:59,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2526 transitions. [2022-11-21 17:24:59,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8295566502463054 [2022-11-21 17:24:59,751 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2526 transitions. [2022-11-21 17:24:59,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2526 transitions. [2022-11-21 17:24:59,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:59,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2526 transitions. [2022-11-21 17:24:59,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 168.4) internal successors, (2526), 15 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:59,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:59,761 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:59,761 INFO L175 Difference]: Start difference. First operand has 365 places, 420 transitions, 3534 flow. Second operand 15 states and 2526 transitions. [2022-11-21 17:24:59,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 508 transitions, 5010 flow [2022-11-21 17:24:59,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 508 transitions, 4978 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-21 17:24:59,817 INFO L231 Difference]: Finished difference. Result has 372 places, 477 transitions, 4713 flow [2022-11-21 17:24:59,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3483, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4713, PETRI_PLACES=372, PETRI_TRANSITIONS=477} [2022-11-21 17:24:59,819 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 178 predicate places. [2022-11-21 17:24:59,819 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 477 transitions, 4713 flow [2022-11-21 17:24:59,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 168.45454545454547) internal successors, (1853), 11 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:59,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:59,821 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 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] [2022-11-21 17:24:59,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:25:00,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 17:25:00,036 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:25:00,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash -122160299, now seen corresponding path program 2 times [2022-11-21 17:25:00,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:00,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896525513] [2022-11-21 17:25:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:00,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:00,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:25:00,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646923451] [2022-11-21 17:25:00,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:25:00,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:25:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:25:00,438 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:25:00,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 17:25:57,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:25:57,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:25:58,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 10552 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:25:58,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:26:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 42044 proven. 0 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-21 17:26:02,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:26:02,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:02,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896525513] [2022-11-21 17:26:02,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:26:02,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646923451] [2022-11-21 17:26:02,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646923451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:02,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:02,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:26:02,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611908508] [2022-11-21 17:26:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:02,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:26:02,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:26:02,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:26:02,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 203 [2022-11-21 17:26:02,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 477 transitions, 4713 flow. Second operand has 9 states, 9 states have (on average 174.44444444444446) internal successors, (1570), 9 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:02,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:26:02,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 203 [2022-11-21 17:26:02,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:26:06,261 INFO L130 PetriNetUnfolder]: 8/3871 cut-off events. [2022-11-21 17:26:06,261 INFO L131 PetriNetUnfolder]: For 9582/9582 co-relation queries the response was YES. [2022-11-21 17:26:06,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 3871 events. 8/3871 cut-off events. For 9582/9582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 28/3886 useless extension candidates. Maximal degree in co-relation 4817. Up to 217 conditions per place. [2022-11-21 17:26:06,279 INFO L137 encePairwiseOnDemand]: 194/203 looper letters, 200 selfloop transitions, 49 changer transitions 0/502 dead transitions. [2022-11-21 17:26:06,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 502 transitions, 5456 flow [2022-11-21 17:26:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:26:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 17:26:06,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2085 transitions. [2022-11-21 17:26:06,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8559113300492611 [2022-11-21 17:26:06,284 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2085 transitions. [2022-11-21 17:26:06,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2085 transitions. [2022-11-21 17:26:06,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:26:06,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2085 transitions. [2022-11-21 17:26:06,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 173.75) internal successors, (2085), 12 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:06,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:06,292 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:06,293 INFO L175 Difference]: Start difference. First operand has 372 places, 477 transitions, 4713 flow. Second operand 12 states and 2085 transitions. [2022-11-21 17:26:06,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 502 transitions, 5456 flow [2022-11-21 17:26:06,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 502 transitions, 5280 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-21 17:26:06,352 INFO L231 Difference]: Finished difference. Result has 374 places, 482 transitions, 4760 flow [2022-11-21 17:26:06,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4525, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4760, PETRI_PLACES=374, PETRI_TRANSITIONS=482} [2022-11-21 17:26:06,353 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 180 predicate places. [2022-11-21 17:26:06,354 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 482 transitions, 4760 flow [2022-11-21 17:26:06,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.44444444444446) internal successors, (1570), 9 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:06,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:26:06,355 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 17:26:06,579 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2022-11-21 17:26:06,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 17:26:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:26:06,615 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:26:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash -754395284, now seen corresponding path program 3 times [2022-11-21 17:26:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:06,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495247533] [2022-11-21 17:26:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:07,095 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:26:07,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690039029] [2022-11-21 17:26:07,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:26:07,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:26:07,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:26:07,097 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:26:07,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 17:26:13,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 17:26:13,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:26:13,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:26:13,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:26:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-21 17:26:19,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:26:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-21 17:26:26,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495247533] [2022-11-21 17:26:26,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:26:26,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690039029] [2022-11-21 17:26:26,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690039029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:26:26,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:26:26,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 17:26:26,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519706311] [2022-11-21 17:26:26,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:26:26,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:26:26,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:26:26,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:26:26,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-21 17:26:26,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 482 transitions, 4760 flow. Second operand has 16 states, 16 states have (on average 178.875) internal successors, (2862), 16 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:26,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:26:26,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-21 17:26:26,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:26:40,519 INFO L130 PetriNetUnfolder]: 12/8859 cut-off events. [2022-11-21 17:26:40,520 INFO L131 PetriNetUnfolder]: For 21629/21629 co-relation queries the response was YES. [2022-11-21 17:26:40,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16471 conditions, 8859 events. 12/8859 cut-off events. For 21629/21629 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 244 event pairs, 0 based on Foata normal form. 4/8850 useless extension candidates. Maximal degree in co-relation 14137. Up to 336 conditions per place. [2022-11-21 17:26:40,540 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 74 selfloop transitions, 21 changer transitions 0/550 dead transitions. [2022-11-21 17:26:40,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 550 transitions, 5250 flow [2022-11-21 17:26:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:26:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 17:26:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3748 transitions. [2022-11-21 17:26:40,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879193056532958 [2022-11-21 17:26:40,549 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3748 transitions. [2022-11-21 17:26:40,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3748 transitions. [2022-11-21 17:26:40,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:26:40,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3748 transitions. [2022-11-21 17:26:40,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 178.47619047619048) internal successors, (3748), 21 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:40,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:40,573 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:40,573 INFO L175 Difference]: Start difference. First operand has 374 places, 482 transitions, 4760 flow. Second operand 21 states and 3748 transitions. [2022-11-21 17:26:40,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 550 transitions, 5250 flow [2022-11-21 17:26:40,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 550 transitions, 5193 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-21 17:26:40,668 INFO L231 Difference]: Finished difference. Result has 390 places, 495 transitions, 4901 flow [2022-11-21 17:26:40,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4727, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4901, PETRI_PLACES=390, PETRI_TRANSITIONS=495} [2022-11-21 17:26:40,671 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 196 predicate places. [2022-11-21 17:26:40,671 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 495 transitions, 4901 flow [2022-11-21 17:26:40,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 178.875) internal successors, (2862), 16 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:40,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:26:40,674 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:40,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 17:26:40,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:26:40,888 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:26:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1575393352, now seen corresponding path program 4 times [2022-11-21 17:26:40,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:40,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966407340] [2022-11-21 17:26:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:40,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:42,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:26:42,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928195232] [2022-11-21 17:26:42,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:26:42,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:26:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:26:42,038 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:26:42,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 17:26:51,480 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:26:51,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:26:51,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 31914 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 17:26:51,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-21 17:27:07,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-21 17:27:26,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:26,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966407340] [2022-11-21 17:27:26,506 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:27:26,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928195232] [2022-11-21 17:27:26,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928195232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:26,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:27:26,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-21 17:27:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792687110] [2022-11-21 17:27:26,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:26,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 17:27:26,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:26,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 17:27:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-21 17:27:26,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-21 17:27:26,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 495 transitions, 4901 flow. Second operand has 21 states, 21 states have (on average 179.42857142857142) internal successors, (3768), 21 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:26,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:27:26,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-21 17:27:26,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:27:54,039 INFO L130 PetriNetUnfolder]: 15/12600 cut-off events. [2022-11-21 17:27:54,039 INFO L131 PetriNetUnfolder]: For 30280/30280 co-relation queries the response was YES. [2022-11-21 17:27:54,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23339 conditions, 12600 events. 15/12600 cut-off events. For 30280/30280 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 247 event pairs, 0 based on Foata normal form. 3/12590 useless extension candidates. Maximal degree in co-relation 20996. Up to 480 conditions per place. [2022-11-21 17:27:54,080 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 104 selfloop transitions, 30 changer transitions 0/589 dead transitions. [2022-11-21 17:27:54,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 589 transitions, 5561 flow [2022-11-21 17:27:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 17:27:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 17:27:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5349 transitions. [2022-11-21 17:27:54,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783251231527094 [2022-11-21 17:27:54,087 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5349 transitions. [2022-11-21 17:27:54,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5349 transitions. [2022-11-21 17:27:54,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:27:54,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5349 transitions. [2022-11-21 17:27:54,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 178.3) internal successors, (5349), 30 states have internal predecessors, (5349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:54,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:54,104 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:54,104 INFO L175 Difference]: Start difference. First operand has 390 places, 495 transitions, 4901 flow. Second operand 30 states and 5349 transitions. [2022-11-21 17:27:54,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 589 transitions, 5561 flow [2022-11-21 17:27:54,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 589 transitions, 5531 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-21 17:27:54,225 INFO L231 Difference]: Finished difference. Result has 416 places, 505 transitions, 5064 flow [2022-11-21 17:27:54,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5064, PETRI_PLACES=416, PETRI_TRANSITIONS=505} [2022-11-21 17:27:54,226 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 222 predicate places. [2022-11-21 17:27:54,226 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 505 transitions, 5064 flow [2022-11-21 17:27:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 179.42857142857142) internal successors, (3768), 21 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:54,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:27:54,231 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:54,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:54,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 17:27:54,455 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 17:27:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1595849169, now seen corresponding path program 5 times [2022-11-21 17:27:54,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:54,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243748802] [2022-11-21 17:27:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:54,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:56,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:27:56,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041923018] [2022-11-21 17:27:56,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:27:56,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:56,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:56,163 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:56,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a580f-3c06-409b-b535-0e137ab24d49/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process