./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/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_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 11:43:24,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:43:24,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:43:24,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:43:24,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:43:24,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:43:24,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:43:24,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:43:24,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:43:24,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:43:24,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:43:24,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:43:24,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:43:24,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:43:24,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:43:24,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:43:24,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:43:24,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:43:24,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:43:24,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:43:24,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:43:24,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:43:24,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:43:24,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:43:24,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:43:24,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:43:24,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:43:24,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:43:24,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:43:24,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:43:24,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:43:24,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:43:24,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:43:24,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:43:24,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:43:24,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:43:24,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:43:24,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:43:24,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:43:24,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:43:24,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:43:24,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:43:24,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:43:24,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:43:24,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:43:24,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:43:24,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:43:24,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:43:24,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:43:24,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:43:24,491 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:43:24,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:43:24,492 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:43:24,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:43:24,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:43:24,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:43:24,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:43:24,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:43:24,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:43:24,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:43:24,494 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:43:24,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:43:24,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:43:24,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:43:24,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:43:24,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:43:24,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:43:24,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:43:24,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:24,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:43:24,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:43:24,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:43:24,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:43:24,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:43:24,499 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:43:24,499 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:43:24,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:43:24,499 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_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-16 11:43:24,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:43:24,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:43:24,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:43:24,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:43:24,805 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:43:24,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-16 11:43:24,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/data/2acff59ad/d2137c1424764f32ae829ceb0f146471/FLAGd7cd99daa [2022-11-16 11:43:25,392 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:43:25,392 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-16 11:43:25,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/data/2acff59ad/d2137c1424764f32ae829ceb0f146471/FLAGd7cd99daa [2022-11-16 11:43:25,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/data/2acff59ad/d2137c1424764f32ae829ceb0f146471 [2022-11-16 11:43:25,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:43:25,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:43:25,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:25,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:43:25,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:43:25,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:25" (1/1) ... [2022-11-16 11:43:25,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1079bceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:25, skipping insertion in model container [2022-11-16 11:43:25,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:25" (1/1) ... [2022-11-16 11:43:25,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:43:25,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:43:26,278 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:43:26,279 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:43:26,281 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:43:26,283 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:43:26,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:26,343 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:43:26,399 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:43:26,399 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:43:26,400 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:43:26,400 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:43:26,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:26,491 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:43:26,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26 WrapperNode [2022-11-16 11:43:26,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:26,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:26,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:43:26,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:43:26,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,571 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2022-11-16 11:43:26,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:26,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:43:26,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:43:26,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:43:26,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:43:26,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:43:26,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:43:26,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:43:26,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:26,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:26,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:43:26,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:43:26,694 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:43:26,694 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:43:26,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:43:26,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:43:26,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:43:26,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:43:26,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:43:26,695 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:43:26,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:43:26,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:43:26,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:43:26,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:43:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:43:26,698 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:43:26,862 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:43:26,864 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:43:27,216 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:43:27,224 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:43:27,225 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:43:27,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:27 BoogieIcfgContainer [2022-11-16 11:43:27,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:43:27,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:43:27,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:43:27,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:43:27,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:43:25" (1/3) ... [2022-11-16 11:43:27,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260cfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:27, skipping insertion in model container [2022-11-16 11:43:27,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26" (2/3) ... [2022-11-16 11:43:27,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260cfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:27, skipping insertion in model container [2022-11-16 11:43:27,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:27" (3/3) ... [2022-11-16 11:43:27,236 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-16 11:43:27,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:43:27,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:43:27,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 11:43:27,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:43:27,426 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:43:27,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 203 transitions, 416 flow [2022-11-16 11:43:27,625 INFO L130 PetriNetUnfolder]: 14/201 cut-off events. [2022-11-16 11:43:27,626 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:43:27,634 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. [2022-11-16 11:43:27,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 203 transitions, 416 flow [2022-11-16 11:43:27,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 201 transitions, 408 flow [2022-11-16 11:43:27,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:43:27,661 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;@f9f174c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:43:27,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-16 11:43:27,670 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-11-16 11:43:27,671 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:43:27,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:27,672 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] [2022-11-16 11:43:27,672 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)] === [2022-11-16 11:43:27,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:27,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1502815099, now seen corresponding path program 1 times [2022-11-16 11:43:27,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:27,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65026689] [2022-11-16 11:43:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:27,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:27,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:27,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090467099] [2022-11-16 11:43:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:27,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:27,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:27,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:27,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:43:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:27,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:43:28,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:28,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:43:28,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:28,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65026689] [2022-11-16 11:43:28,087 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:28,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090467099] [2022-11-16 11:43:28,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090467099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:28,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:28,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:43:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279636760] [2022-11-16 11:43:28,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:28,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:43:28,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:43:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:43:28,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 203 [2022-11-16 11:43:28,178 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) [2022-11-16 11:43:28,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:28,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 203 [2022-11-16 11:43:28,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:28,349 INFO L130 PetriNetUnfolder]: 7/253 cut-off events. [2022-11-16 11:43:28,349 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:43:28,354 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. [2022-11-16 11:43:28,357 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/202 dead transitions. [2022-11-16 11:43:28,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 202 transitions, 460 flow [2022-11-16 11:43:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:43:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:43:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-11-16 11:43:28,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9441707717569786 [2022-11-16 11:43:28,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-11-16 11:43:28,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-11-16 11:43:28,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:28,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-11-16 11:43:28,387 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) [2022-11-16 11:43:28,401 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) [2022-11-16 11:43:28,402 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) [2022-11-16 11:43:28,404 INFO L175 Difference]: Start difference. First operand has 194 places, 201 transitions, 408 flow. Second operand 3 states and 575 transitions. [2022-11-16 11:43:28,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 202 transitions, 460 flow [2022-11-16 11:43:28,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 202 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:28,413 INFO L231 Difference]: Finished difference. Result has 195 places, 194 transitions, 406 flow [2022-11-16 11:43:28,417 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} [2022-11-16 11:43:28,421 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 1 predicate places. [2022-11-16 11:43:28,422 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 194 transitions, 406 flow [2022-11-16 11:43:28,426 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) [2022-11-16 11:43:28,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:28,427 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] [2022-11-16 11:43:28,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:43:28,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:43:28,632 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)] === [2022-11-16 11:43:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash -657374059, now seen corresponding path program 1 times [2022-11-16 11:43:28,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:28,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696136609] [2022-11-16 11:43:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:28,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696136609] [2022-11-16 11:43:28,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696136609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:28,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:28,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:28,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584534142] [2022-11-16 11:43:28,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:28,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:43:28,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:43:28,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:43:28,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 203 [2022-11-16 11:43:28,890 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) [2022-11-16 11:43:28,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:28,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 203 [2022-11-16 11:43:28,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:28,982 INFO L130 PetriNetUnfolder]: 7/337 cut-off events. [2022-11-16 11:43:28,982 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:43:28,983 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. [2022-11-16 11:43:28,984 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 17 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2022-11-16 11:43:28,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 200 transitions, 456 flow [2022-11-16 11:43:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:43:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:43:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-11-16 11:43:28,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9326765188834154 [2022-11-16 11:43:28,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-11-16 11:43:28,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-11-16 11:43:28,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:28,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-11-16 11:43:28,990 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) [2022-11-16 11:43:28,994 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) [2022-11-16 11:43:28,994 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) [2022-11-16 11:43:28,995 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 406 flow. Second operand 3 states and 568 transitions. [2022-11-16 11:43:28,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 200 transitions, 456 flow [2022-11-16 11:43:28,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 200 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:43:29,000 INFO L231 Difference]: Finished difference. Result has 197 places, 195 transitions, 420 flow [2022-11-16 11:43:29,001 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} [2022-11-16 11:43:29,001 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 3 predicate places. [2022-11-16 11:43:29,001 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 195 transitions, 420 flow [2022-11-16 11:43:29,002 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) [2022-11-16 11:43:29,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:29,002 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] [2022-11-16 11:43:29,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:43:29,003 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)] === [2022-11-16 11:43:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash -371900578, now seen corresponding path program 1 times [2022-11-16 11:43:29,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:29,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040809233] [2022-11-16 11:43:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:29,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:29,058 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:29,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152609531] [2022-11-16 11:43:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:29,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:29,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:29,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:29,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:43:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:29,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:43:29,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:29,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:43:29,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:29,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040809233] [2022-11-16 11:43:29,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:29,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152609531] [2022-11-16 11:43:29,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152609531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:29,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:29,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4947889] [2022-11-16 11:43:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:29,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:29,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:29,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-16 11:43:29,422 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) [2022-11-16 11:43:29,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:29,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-16 11:43:29,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:29,567 INFO L130 PetriNetUnfolder]: 7/337 cut-off events. [2022-11-16 11:43:29,567 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 11:43:29,570 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. [2022-11-16 11:43:29,572 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 23 selfloop transitions, 5 changer transitions 0/204 dead transitions. [2022-11-16 11:43:29,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 204 transitions, 494 flow [2022-11-16 11:43:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:43:29,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:43:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-16 11:43:29,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9004926108374385 [2022-11-16 11:43:29,577 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-16 11:43:29,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-16 11:43:29,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:29,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-16 11:43:29,581 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) [2022-11-16 11:43:29,584 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) [2022-11-16 11:43:29,585 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) [2022-11-16 11:43:29,585 INFO L175 Difference]: Start difference. First operand has 197 places, 195 transitions, 420 flow. Second operand 5 states and 914 transitions. [2022-11-16 11:43:29,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 204 transitions, 494 flow [2022-11-16 11:43:29,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 204 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:43:29,592 INFO L231 Difference]: Finished difference. Result has 204 places, 198 transitions, 452 flow [2022-11-16 11:43:29,593 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} [2022-11-16 11:43:29,595 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 10 predicate places. [2022-11-16 11:43:29,596 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 198 transitions, 452 flow [2022-11-16 11:43:29,597 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) [2022-11-16 11:43:29,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:29,597 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] [2022-11-16 11:43:29,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:43:29,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:29,803 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)] === [2022-11-16 11:43:29,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1355984203, now seen corresponding path program 1 times [2022-11-16 11:43:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:29,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516689266] [2022-11-16 11:43:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:29,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:29,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:29,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009038270] [2022-11-16 11:43:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:29,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:29,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:29,839 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:29,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:43:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:30,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:43:30,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:30,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:30,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:43:30,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516689266] [2022-11-16 11:43:30,106 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:30,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009038270] [2022-11-16 11:43:30,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009038270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:30,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:30,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:30,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446206480] [2022-11-16 11:43:30,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:30,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:30,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:30,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:30,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:30,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-16 11:43:30,113 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) [2022-11-16 11:43:30,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:30,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-16 11:43:30,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:30,212 INFO L130 PetriNetUnfolder]: 7/333 cut-off events. [2022-11-16 11:43:30,212 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 11:43:30,213 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. [2022-11-16 11:43:30,214 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 16 selfloop transitions, 5 changer transitions 0/197 dead transitions. [2022-11-16 11:43:30,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 197 transitions, 492 flow [2022-11-16 11:43:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 727 transitions. [2022-11-16 11:43:30,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.895320197044335 [2022-11-16 11:43:30,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 727 transitions. [2022-11-16 11:43:30,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 727 transitions. [2022-11-16 11:43:30,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:30,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 727 transitions. [2022-11-16 11:43:30,220 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) [2022-11-16 11:43:30,222 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) [2022-11-16 11:43:30,223 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) [2022-11-16 11:43:30,223 INFO L175 Difference]: Start difference. First operand has 204 places, 198 transitions, 452 flow. Second operand 4 states and 727 transitions. [2022-11-16 11:43:30,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 197 transitions, 492 flow [2022-11-16 11:43:30,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 197 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:43:30,230 INFO L231 Difference]: Finished difference. Result has 204 places, 197 transitions, 454 flow [2022-11-16 11:43:30,230 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} [2022-11-16 11:43:30,232 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 10 predicate places. [2022-11-16 11:43:30,232 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 197 transitions, 454 flow [2022-11-16 11:43:30,233 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) [2022-11-16 11:43:30,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:30,233 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] [2022-11-16 11:43:30,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:30,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 11:43:30,439 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)] === [2022-11-16 11:43:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash 682359355, now seen corresponding path program 1 times [2022-11-16 11:43:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:30,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399589065] [2022-11-16 11:43:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:30,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:30,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:30,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37014875] [2022-11-16 11:43:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:30,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:30,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:30,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:30,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:43:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:30,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:43:30,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:30,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:43:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399589065] [2022-11-16 11:43:30,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37014875] [2022-11-16 11:43:30,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37014875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:43:30,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:43:30,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:43:30,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000112919] [2022-11-16 11:43:30,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:43:30,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:43:30,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:30,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:43:30,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:43:30,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-16 11:43:30,873 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) [2022-11-16 11:43:30,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:30,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-16 11:43:30,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:31,048 INFO L130 PetriNetUnfolder]: 7/419 cut-off events. [2022-11-16 11:43:31,049 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-16 11:43:31,050 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. [2022-11-16 11:43:31,051 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 29 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2022-11-16 11:43:31,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 215 transitions, 586 flow [2022-11-16 11:43:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:43:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:43:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1634 transitions. [2022-11-16 11:43:31,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8943623426382047 [2022-11-16 11:43:31,056 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1634 transitions. [2022-11-16 11:43:31,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1634 transitions. [2022-11-16 11:43:31,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:31,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1634 transitions. [2022-11-16 11:43:31,061 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) [2022-11-16 11:43:31,066 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) [2022-11-16 11:43:31,067 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) [2022-11-16 11:43:31,067 INFO L175 Difference]: Start difference. First operand has 204 places, 197 transitions, 454 flow. Second operand 9 states and 1634 transitions. [2022-11-16 11:43:31,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 215 transitions, 586 flow [2022-11-16 11:43:31,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 215 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:31,073 INFO L231 Difference]: Finished difference. Result has 215 places, 201 transitions, 504 flow [2022-11-16 11:43:31,073 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} [2022-11-16 11:43:31,074 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 21 predicate places. [2022-11-16 11:43:31,074 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 201 transitions, 504 flow [2022-11-16 11:43:31,075 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) [2022-11-16 11:43:31,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:31,076 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] [2022-11-16 11:43:31,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:31,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:31,282 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)] === [2022-11-16 11:43:31,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1573270686, now seen corresponding path program 1 times [2022-11-16 11:43:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:31,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950636533] [2022-11-16 11:43:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:31,323 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:31,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047721994] [2022-11-16 11:43:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:31,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:31,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:31,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:31,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:43:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:31,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:43:31,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:31,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:43:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:32,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:32,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950636533] [2022-11-16 11:43:32,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:32,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047721994] [2022-11-16 11:43:32,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047721994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:43:32,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:43:32,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:43:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672223843] [2022-11-16 11:43:32,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:43:32,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:43:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:43:32,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:43:32,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-16 11:43:32,089 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) [2022-11-16 11:43:32,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:32,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-16 11:43:32,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:32,389 INFO L130 PetriNetUnfolder]: 13/641 cut-off events. [2022-11-16 11:43:32,389 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-16 11:43:32,391 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. [2022-11-16 11:43:32,393 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 37 selfloop transitions, 16 changer transitions 0/229 dead transitions. [2022-11-16 11:43:32,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 229 transitions, 718 flow [2022-11-16 11:43:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:43:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:43:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2710 transitions. [2022-11-16 11:43:32,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8899835796387521 [2022-11-16 11:43:32,400 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2710 transitions. [2022-11-16 11:43:32,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2710 transitions. [2022-11-16 11:43:32,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:32,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2710 transitions. [2022-11-16 11:43:32,412 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) [2022-11-16 11:43:32,418 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) [2022-11-16 11:43:32,422 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) [2022-11-16 11:43:32,422 INFO L175 Difference]: Start difference. First operand has 215 places, 201 transitions, 504 flow. Second operand 15 states and 2710 transitions. [2022-11-16 11:43:32,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 229 transitions, 718 flow [2022-11-16 11:43:32,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 700 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 11:43:32,432 INFO L231 Difference]: Finished difference. Result has 224 places, 205 transitions, 553 flow [2022-11-16 11:43:32,433 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} [2022-11-16 11:43:32,435 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 30 predicate places. [2022-11-16 11:43:32,435 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 205 transitions, 553 flow [2022-11-16 11:43:32,437 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) [2022-11-16 11:43:32,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:32,437 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] [2022-11-16 11:43:32,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:32,643 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)] === [2022-11-16 11:43:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2027945851, now seen corresponding path program 2 times [2022-11-16 11:43:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:32,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878389699] [2022-11-16 11:43:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:32,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:32,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905581734] [2022-11-16 11:43:32,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:43:32,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:32,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:32,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:32,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:43:32,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:43:32,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:43:32,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:43:32,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-16 11:43:33,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:43:33,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:33,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878389699] [2022-11-16 11:43:33,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:33,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905581734] [2022-11-16 11:43:33,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905581734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:33,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:33,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:33,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915710328] [2022-11-16 11:43:33,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:33,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:33,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:33,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-16 11:43:33,075 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) [2022-11-16 11:43:33,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:33,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-16 11:43:33,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:33,246 INFO L130 PetriNetUnfolder]: 13/641 cut-off events. [2022-11-16 11:43:33,247 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-16 11:43:33,249 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. [2022-11-16 11:43:33,251 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 29 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-11-16 11:43:33,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 217 transitions, 645 flow [2022-11-16 11:43:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:43:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:43:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 905 transitions. [2022-11-16 11:43:33,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8916256157635468 [2022-11-16 11:43:33,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 905 transitions. [2022-11-16 11:43:33,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 905 transitions. [2022-11-16 11:43:33,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:33,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 905 transitions. [2022-11-16 11:43:33,257 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) [2022-11-16 11:43:33,259 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) [2022-11-16 11:43:33,260 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) [2022-11-16 11:43:33,260 INFO L175 Difference]: Start difference. First operand has 224 places, 205 transitions, 553 flow. Second operand 5 states and 905 transitions. [2022-11-16 11:43:33,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 217 transitions, 645 flow [2022-11-16 11:43:33,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 217 transitions, 586 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-16 11:43:33,267 INFO L231 Difference]: Finished difference. Result has 219 places, 208 transitions, 528 flow [2022-11-16 11:43:33,268 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} [2022-11-16 11:43:33,268 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 25 predicate places. [2022-11-16 11:43:33,268 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 208 transitions, 528 flow [2022-11-16 11:43:33,269 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) [2022-11-16 11:43:33,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:33,269 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] [2022-11-16 11:43:33,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:33,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:43:33,475 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)] === [2022-11-16 11:43:33,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:33,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1558187717, now seen corresponding path program 1 times [2022-11-16 11:43:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:33,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134127007] [2022-11-16 11:43:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:33,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:33,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:33,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998524074] [2022-11-16 11:43:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:33,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:33,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:33,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:33,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:43:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:33,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:43:33,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:34,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:43:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:34,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134127007] [2022-11-16 11:43:34,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998524074] [2022-11-16 11:43:34,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998524074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:43:34,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:43:34,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:43:34,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567529141] [2022-11-16 11:43:34,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:43:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:43:34,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:43:34,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:43:34,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-16 11:43:34,343 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) [2022-11-16 11:43:34,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:34,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-16 11:43:34,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:34,805 INFO L130 PetriNetUnfolder]: 7/753 cut-off events. [2022-11-16 11:43:34,805 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-16 11:43:34,806 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. [2022-11-16 11:43:34,808 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 60 selfloop transitions, 22 changer transitions 0/261 dead transitions. [2022-11-16 11:43:34,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 261 transitions, 885 flow [2022-11-16 11:43:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:43:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:43:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3802 transitions. [2022-11-16 11:43:34,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8918601923528032 [2022-11-16 11:43:34,816 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3802 transitions. [2022-11-16 11:43:34,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3802 transitions. [2022-11-16 11:43:34,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:34,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3802 transitions. [2022-11-16 11:43:34,828 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) [2022-11-16 11:43:34,837 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) [2022-11-16 11:43:34,839 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) [2022-11-16 11:43:34,839 INFO L175 Difference]: Start difference. First operand has 219 places, 208 transitions, 528 flow. Second operand 21 states and 3802 transitions. [2022-11-16 11:43:34,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 261 transitions, 885 flow [2022-11-16 11:43:34,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 261 transitions, 875 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 11:43:34,846 INFO L231 Difference]: Finished difference. Result has 243 places, 217 transitions, 638 flow [2022-11-16 11:43:34,846 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} [2022-11-16 11:43:34,848 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 49 predicate places. [2022-11-16 11:43:34,849 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 217 transitions, 638 flow [2022-11-16 11:43:34,851 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) [2022-11-16 11:43:34,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:34,851 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] [2022-11-16 11:43:34,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:35,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:35,058 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)] === [2022-11-16 11:43:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash -701389125, now seen corresponding path program 2 times [2022-11-16 11:43:35,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:35,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188084054] [2022-11-16 11:43:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:35,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:35,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:35,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747191080] [2022-11-16 11:43:35,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:43:35,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:35,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:35,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:35,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:43:35,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:43:35,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:43:35,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:43:35,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-16 11:43:35,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:43:35,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:35,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188084054] [2022-11-16 11:43:35,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747191080] [2022-11-16 11:43:35,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747191080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:35,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:35,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:35,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683686626] [2022-11-16 11:43:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:35,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:35,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-16 11:43:35,800 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) [2022-11-16 11:43:35,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:35,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-16 11:43:35,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:35,994 INFO L130 PetriNetUnfolder]: 7/751 cut-off events. [2022-11-16 11:43:35,995 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-16 11:43:35,996 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. [2022-11-16 11:43:35,998 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 18 selfloop transitions, 5 changer transitions 0/215 dead transitions. [2022-11-16 11:43:35,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 215 transitions, 674 flow [2022-11-16 11:43:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 717 transitions. [2022-11-16 11:43:36,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830049261083743 [2022-11-16 11:43:36,000 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 717 transitions. [2022-11-16 11:43:36,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 717 transitions. [2022-11-16 11:43:36,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:36,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 717 transitions. [2022-11-16 11:43:36,016 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) [2022-11-16 11:43:36,018 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) [2022-11-16 11:43:36,022 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) [2022-11-16 11:43:36,022 INFO L175 Difference]: Start difference. First operand has 243 places, 217 transitions, 638 flow. Second operand 4 states and 717 transitions. [2022-11-16 11:43:36,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 215 transitions, 674 flow [2022-11-16 11:43:36,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 215 transitions, 651 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 11:43:36,028 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 615 flow [2022-11-16 11:43:36,029 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} [2022-11-16 11:43:36,030 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 40 predicate places. [2022-11-16 11:43:36,030 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 615 flow [2022-11-16 11:43:36,030 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) [2022-11-16 11:43:36,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:36,031 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] [2022-11-16 11:43:36,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:36,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:36,238 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:43:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1660508075, now seen corresponding path program 1 times [2022-11-16 11:43:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:36,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168482023] [2022-11-16 11:43:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:36,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:36,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:36,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205266354] [2022-11-16 11:43:36,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:36,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:36,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:36,312 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:36,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:43:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:36,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:43:36,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:37,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:43:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:38,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:38,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168482023] [2022-11-16 11:43:38,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:38,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205266354] [2022-11-16 11:43:38,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205266354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:43:38,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:43:38,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 11:43:38,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328653108] [2022-11-16 11:43:38,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:43:38,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:43:38,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:38,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:43:38,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:43:38,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-16 11:43:38,049 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) [2022-11-16 11:43:38,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:38,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-16 11:43:38,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:39,298 INFO L130 PetriNetUnfolder]: 7/1423 cut-off events. [2022-11-16 11:43:39,298 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-16 11:43:39,300 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. [2022-11-16 11:43:39,303 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 124 selfloop transitions, 46 changer transitions 0/347 dead transitions. [2022-11-16 11:43:39,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 347 transitions, 1551 flow [2022-11-16 11:43:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:43:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:43:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8142 transitions. [2022-11-16 11:43:39,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8912972085385878 [2022-11-16 11:43:39,317 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8142 transitions. [2022-11-16 11:43:39,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8142 transitions. [2022-11-16 11:43:39,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:39,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8142 transitions. [2022-11-16 11:43:39,338 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) [2022-11-16 11:43:39,356 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) [2022-11-16 11:43:39,359 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) [2022-11-16 11:43:39,359 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 615 flow. Second operand 45 states and 8142 transitions. [2022-11-16 11:43:39,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 347 transitions, 1551 flow [2022-11-16 11:43:39,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 347 transitions, 1541 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:43:39,419 INFO L231 Difference]: Finished difference. Result has 284 places, 240 transitions, 928 flow [2022-11-16 11:43:39,419 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} [2022-11-16 11:43:39,420 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 90 predicate places. [2022-11-16 11:43:39,420 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 240 transitions, 928 flow [2022-11-16 11:43:39,422 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) [2022-11-16 11:43:39,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:39,422 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] [2022-11-16 11:43:39,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 11:43:39,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:43:39,630 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:43:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2076259157, now seen corresponding path program 2 times [2022-11-16 11:43:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:39,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000323840] [2022-11-16 11:43:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:39,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:39,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862651562] [2022-11-16 11:43:39,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:43:39,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:39,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:39,755 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:39,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:43:40,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:43:40,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:43:40,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:43:40,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-16 11:43:40,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:43:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:40,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000323840] [2022-11-16 11:43:40,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:40,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862651562] [2022-11-16 11:43:40,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862651562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:40,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:40,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100181306] [2022-11-16 11:43:40,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:40,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:40,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:40,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:40,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:40,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-16 11:43:40,293 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) [2022-11-16 11:43:40,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:40,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-16 11:43:40,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:40,875 INFO L130 PetriNetUnfolder]: 23/1479 cut-off events. [2022-11-16 11:43:40,875 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-11-16 11:43:40,877 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. [2022-11-16 11:43:40,881 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 16 selfloop transitions, 4 changer transitions 0/242 dead transitions. [2022-11-16 11:43:40,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 242 transitions, 978 flow [2022-11-16 11:43:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:43:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:43:40,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 906 transitions. [2022-11-16 11:43:40,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8926108374384236 [2022-11-16 11:43:40,885 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 906 transitions. [2022-11-16 11:43:40,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 906 transitions. [2022-11-16 11:43:40,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:40,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 906 transitions. [2022-11-16 11:43:40,887 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) [2022-11-16 11:43:40,889 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) [2022-11-16 11:43:40,890 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) [2022-11-16 11:43:40,890 INFO L175 Difference]: Start difference. First operand has 284 places, 240 transitions, 928 flow. Second operand 5 states and 906 transitions. [2022-11-16 11:43:40,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 242 transitions, 978 flow [2022-11-16 11:43:40,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 242 transitions, 921 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-16 11:43:40,904 INFO L231 Difference]: Finished difference. Result has 269 places, 239 transitions, 877 flow [2022-11-16 11:43:40,904 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} [2022-11-16 11:43:40,905 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 75 predicate places. [2022-11-16 11:43:40,905 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 239 transitions, 877 flow [2022-11-16 11:43:40,906 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) [2022-11-16 11:43:40,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:40,906 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] [2022-11-16 11:43:40,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:41,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:41,112 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:43:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:41,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2076228372, now seen corresponding path program 1 times [2022-11-16 11:43:41,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:41,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460561545] [2022-11-16 11:43:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:41,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:41,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204754820] [2022-11-16 11:43:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:41,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:41,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:41,243 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:41,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:43:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:42,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:43:42,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:43,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:43:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:45,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:45,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460561545] [2022-11-16 11:43:45,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:45,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204754820] [2022-11-16 11:43:45,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204754820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:43:45,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:43:45,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 11:43:45,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015637426] [2022-11-16 11:43:45,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:43:45,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 11:43:45,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 11:43:45,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 11:43:45,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-16 11:43:45,140 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) [2022-11-16 11:43:45,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:45,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-16 11:43:45,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:48,976 INFO L130 PetriNetUnfolder]: 7/2682 cut-off events. [2022-11-16 11:43:48,976 INFO L131 PetriNetUnfolder]: For 4943/4943 co-relation queries the response was YES. [2022-11-16 11:43:48,979 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. [2022-11-16 11:43:48,984 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 244 selfloop transitions, 91 changer transitions 0/511 dead transitions. [2022-11-16 11:43:48,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 511 transitions, 2959 flow [2022-11-16 11:43:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 11:43:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 11:43:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 16279 transitions. [2022-11-16 11:43:49,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891023535851122 [2022-11-16 11:43:49,002 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 16279 transitions. [2022-11-16 11:43:49,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 16279 transitions. [2022-11-16 11:43:49,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:49,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 16279 transitions. [2022-11-16 11:43:49,031 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) [2022-11-16 11:43:49,058 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) [2022-11-16 11:43:49,065 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) [2022-11-16 11:43:49,065 INFO L175 Difference]: Start difference. First operand has 269 places, 239 transitions, 877 flow. Second operand 90 states and 16279 transitions. [2022-11-16 11:43:49,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 511 transitions, 2959 flow [2022-11-16 11:43:49,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 511 transitions, 2951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:43:49,085 INFO L231 Difference]: Finished difference. Result has 370 places, 285 transitions, 1558 flow [2022-11-16 11:43:49,086 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} [2022-11-16 11:43:49,087 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 176 predicate places. [2022-11-16 11:43:49,087 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 285 transitions, 1558 flow [2022-11-16 11:43:49,090 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) [2022-11-16 11:43:49,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:49,091 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] [2022-11-16 11:43:49,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:49,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:49,298 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:43:49,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:49,298 INFO L85 PathProgramCache]: Analyzing trace with hash 567278534, now seen corresponding path program 2 times [2022-11-16 11:43:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:49,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686536840] [2022-11-16 11:43:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:49,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:49,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:49,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625057050] [2022-11-16 11:43:49,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:43:49,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:49,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:49,494 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:49,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:43:51,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:43:51,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:43:51,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 5188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:43:51,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 11:43:52,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:43:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 11:43:54,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:54,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686536840] [2022-11-16 11:43:54,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625057050] [2022-11-16 11:43:54,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625057050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:43:54,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:43:54,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:43:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303024169] [2022-11-16 11:43:54,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:43:54,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:43:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:43:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:43:54,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-16 11:43:54,910 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) [2022-11-16 11:43:54,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:54,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-16 11:43:54,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:57,735 INFO L130 PetriNetUnfolder]: 8/3988 cut-off events. [2022-11-16 11:43:57,735 INFO L131 PetriNetUnfolder]: For 4582/4582 co-relation queries the response was YES. [2022-11-16 11:43:57,739 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. [2022-11-16 11:43:57,744 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 38 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2022-11-16 11:43:57,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 309 transitions, 1714 flow [2022-11-16 11:43:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:43:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:43:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1616 transitions. [2022-11-16 11:43:57,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845101258894362 [2022-11-16 11:43:57,748 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1616 transitions. [2022-11-16 11:43:57,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1616 transitions. [2022-11-16 11:43:57,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:57,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1616 transitions. [2022-11-16 11:43:57,752 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) [2022-11-16 11:43:57,756 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) [2022-11-16 11:43:57,757 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) [2022-11-16 11:43:57,757 INFO L175 Difference]: Start difference. First operand has 370 places, 285 transitions, 1558 flow. Second operand 9 states and 1616 transitions. [2022-11-16 11:43:57,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 309 transitions, 1714 flow [2022-11-16 11:43:57,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 309 transitions, 1595 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 11:43:57,795 INFO L231 Difference]: Finished difference. Result has 341 places, 289 transitions, 1495 flow [2022-11-16 11:43:57,796 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} [2022-11-16 11:43:57,797 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 147 predicate places. [2022-11-16 11:43:57,797 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 289 transitions, 1495 flow [2022-11-16 11:43:57,797 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) [2022-11-16 11:43:57,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:57,798 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] [2022-11-16 11:43:57,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 11:43:58,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:58,013 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)] === [2022-11-16 11:43:58,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:58,014 INFO L85 PathProgramCache]: Analyzing trace with hash -376950072, now seen corresponding path program 1 times [2022-11-16 11:43:58,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:58,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155586533] [2022-11-16 11:43:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:58,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:58,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:58,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175640235] [2022-11-16 11:43:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:58,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:58,254 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:58,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:44:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:05,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 5325 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:44:05,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:44:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 11:44:07,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:44:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 11:44:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155586533] [2022-11-16 11:44:09,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:44:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175640235] [2022-11-16 11:44:09,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175640235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:44:09,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:44:09,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:44:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667643903] [2022-11-16 11:44:09,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:44:09,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:44:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:44:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:44:09,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2022-11-16 11:44:09,346 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) [2022-11-16 11:44:09,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:09,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2022-11-16 11:44:09,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:12,762 INFO L130 PetriNetUnfolder]: 8/3956 cut-off events. [2022-11-16 11:44:12,763 INFO L131 PetriNetUnfolder]: For 4795/4795 co-relation queries the response was YES. [2022-11-16 11:44:12,766 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. [2022-11-16 11:44:12,772 INFO L137 encePairwiseOnDemand]: 189/203 looper letters, 224 selfloop transitions, 144 changer transitions 0/529 dead transitions. [2022-11-16 11:44:12,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 529 transitions, 4355 flow [2022-11-16 11:44:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:44:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:44:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4039 transitions. [2022-11-16 11:44:12,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290229885057471 [2022-11-16 11:44:12,779 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4039 transitions. [2022-11-16 11:44:12,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4039 transitions. [2022-11-16 11:44:12,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:12,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4039 transitions. [2022-11-16 11:44:12,789 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) [2022-11-16 11:44:12,797 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) [2022-11-16 11:44:12,799 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) [2022-11-16 11:44:12,799 INFO L175 Difference]: Start difference. First operand has 341 places, 289 transitions, 1495 flow. Second operand 24 states and 4039 transitions. [2022-11-16 11:44:12,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 529 transitions, 4355 flow [2022-11-16 11:44:12,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 529 transitions, 4339 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 11:44:12,842 INFO L231 Difference]: Finished difference. Result has 365 places, 420 transitions, 3534 flow [2022-11-16 11:44:12,843 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} [2022-11-16 11:44:12,844 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 171 predicate places. [2022-11-16 11:44:12,844 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 420 transitions, 3534 flow [2022-11-16 11:44:12,845 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) [2022-11-16 11:44:12,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:12,846 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] [2022-11-16 11:44:12,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:44:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:44:13,062 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)] === [2022-11-16 11:44:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1064525364, now seen corresponding path program 1 times [2022-11-16 11:44:13,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:13,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369156061] [2022-11-16 11:44:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:13,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:44:13,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013542758] [2022-11-16 11:44:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:13,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:44:13,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:44:13,302 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:44:13,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:44:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:20,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:44:20,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:44:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 11:44:23,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:44:23,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:23,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369156061] [2022-11-16 11:44:23,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:44:23,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013542758] [2022-11-16 11:44:23,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013542758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:23,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:23,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:44:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120661847] [2022-11-16 11:44:23,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:23,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:44:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:44:23,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:44:23,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2022-11-16 11:44:23,272 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) [2022-11-16 11:44:23,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:23,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2022-11-16 11:44:23,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:26,353 INFO L130 PetriNetUnfolder]: 8/3899 cut-off events. [2022-11-16 11:44:26,353 INFO L131 PetriNetUnfolder]: For 7134/7134 co-relation queries the response was YES. [2022-11-16 11:44:26,357 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. [2022-11-16 11:44:26,365 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 208 selfloop transitions, 139 changer transitions 0/508 dead transitions. [2022-11-16 11:44:26,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 508 transitions, 5010 flow [2022-11-16 11:44:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:44:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:44:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2526 transitions. [2022-11-16 11:44:26,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8295566502463054 [2022-11-16 11:44:26,369 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2526 transitions. [2022-11-16 11:44:26,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2526 transitions. [2022-11-16 11:44:26,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:26,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2526 transitions. [2022-11-16 11:44:26,373 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) [2022-11-16 11:44:26,376 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) [2022-11-16 11:44:26,377 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) [2022-11-16 11:44:26,377 INFO L175 Difference]: Start difference. First operand has 365 places, 420 transitions, 3534 flow. Second operand 15 states and 2526 transitions. [2022-11-16 11:44:26,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 508 transitions, 5010 flow [2022-11-16 11:44:26,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 508 transitions, 4978 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-16 11:44:26,433 INFO L231 Difference]: Finished difference. Result has 372 places, 477 transitions, 4713 flow [2022-11-16 11:44:26,433 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} [2022-11-16 11:44:26,434 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 178 predicate places. [2022-11-16 11:44:26,434 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 477 transitions, 4713 flow [2022-11-16 11:44:26,435 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) [2022-11-16 11:44:26,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:26,436 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] [2022-11-16 11:44:26,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:44:26,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:44:26,650 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)] === [2022-11-16 11:44:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash -122160299, now seen corresponding path program 2 times [2022-11-16 11:44:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:26,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293731995] [2022-11-16 11:44:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:27,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:44:27,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392133868] [2022-11-16 11:44:27,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:44:27,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:44:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:44:27,122 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:44:27,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:45:28,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:45:28,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:45:28,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 10552 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:45:28,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 42044 proven. 0 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-16 11:45:32,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:32,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:32,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293731995] [2022-11-16 11:45:32,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:32,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392133868] [2022-11-16 11:45:32,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392133868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:32,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:32,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:45:32,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028664629] [2022-11-16 11:45:32,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:32,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:45:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:45:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:45:32,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 203 [2022-11-16 11:45:32,239 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) [2022-11-16 11:45:32,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:32,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 203 [2022-11-16 11:45:32,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:35,610 INFO L130 PetriNetUnfolder]: 8/3871 cut-off events. [2022-11-16 11:45:35,611 INFO L131 PetriNetUnfolder]: For 9582/9582 co-relation queries the response was YES. [2022-11-16 11:45:35,618 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. [2022-11-16 11:45:35,632 INFO L137 encePairwiseOnDemand]: 194/203 looper letters, 200 selfloop transitions, 49 changer transitions 0/502 dead transitions. [2022-11-16 11:45:35,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 502 transitions, 5456 flow [2022-11-16 11:45:35,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:45:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:45:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2085 transitions. [2022-11-16 11:45:35,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8559113300492611 [2022-11-16 11:45:35,639 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2085 transitions. [2022-11-16 11:45:35,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2085 transitions. [2022-11-16 11:45:35,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:35,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2085 transitions. [2022-11-16 11:45:35,643 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) [2022-11-16 11:45:35,646 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) [2022-11-16 11:45:35,646 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) [2022-11-16 11:45:35,648 INFO L175 Difference]: Start difference. First operand has 372 places, 477 transitions, 4713 flow. Second operand 12 states and 2085 transitions. [2022-11-16 11:45:35,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 502 transitions, 5456 flow [2022-11-16 11:45:35,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 502 transitions, 5280 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-16 11:45:35,968 INFO L231 Difference]: Finished difference. Result has 374 places, 482 transitions, 4760 flow [2022-11-16 11:45:35,969 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} [2022-11-16 11:45:35,969 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 180 predicate places. [2022-11-16 11:45:35,970 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 482 transitions, 4760 flow [2022-11-16 11:45:35,970 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) [2022-11-16 11:45:35,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:35,971 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] [2022-11-16 11:45:36,171 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2022-11-16 11:45:36,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:36,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:45:36,198 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:45:36,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash -754395284, now seen corresponding path program 3 times [2022-11-16 11:45:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:36,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733597988] [2022-11-16 11:45:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:36,679 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:36,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579074528] [2022-11-16 11:45:36,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:45:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:36,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:36,688 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:36,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:45:43,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:45:43,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:45:43,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:45:43,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 11:45:49,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 11:45:57,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:57,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733597988] [2022-11-16 11:45:57,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:57,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579074528] [2022-11-16 11:45:57,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579074528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:57,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:57,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:45:57,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361321556] [2022-11-16 11:45:57,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:57,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:45:57,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:57,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:45:57,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:45:57,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-16 11:45:57,879 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) [2022-11-16 11:45:57,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:57,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-16 11:45:57,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:13,576 INFO L130 PetriNetUnfolder]: 12/8859 cut-off events. [2022-11-16 11:46:13,576 INFO L131 PetriNetUnfolder]: For 21629/21629 co-relation queries the response was YES. [2022-11-16 11:46:13,584 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. [2022-11-16 11:46:13,594 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 74 selfloop transitions, 21 changer transitions 0/550 dead transitions. [2022-11-16 11:46:13,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 550 transitions, 5250 flow [2022-11-16 11:46:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:46:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:46:13,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3748 transitions. [2022-11-16 11:46:13,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879193056532958 [2022-11-16 11:46:13,601 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3748 transitions. [2022-11-16 11:46:13,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3748 transitions. [2022-11-16 11:46:13,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:13,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3748 transitions. [2022-11-16 11:46:13,608 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) [2022-11-16 11:46:13,613 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) [2022-11-16 11:46:13,614 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) [2022-11-16 11:46:13,614 INFO L175 Difference]: Start difference. First operand has 374 places, 482 transitions, 4760 flow. Second operand 21 states and 3748 transitions. [2022-11-16 11:46:13,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 550 transitions, 5250 flow [2022-11-16 11:46:13,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 550 transitions, 5193 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-16 11:46:13,695 INFO L231 Difference]: Finished difference. Result has 390 places, 495 transitions, 4901 flow [2022-11-16 11:46:13,695 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} [2022-11-16 11:46:13,696 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 196 predicate places. [2022-11-16 11:46:13,696 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 495 transitions, 4901 flow [2022-11-16 11:46:13,697 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) [2022-11-16 11:46:13,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:13,699 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] [2022-11-16 11:46:13,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:13,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:46:13,914 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:46:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1575393352, now seen corresponding path program 4 times [2022-11-16 11:46:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:13,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508015270] [2022-11-16 11:46:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:13,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:15,129 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:46:15,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522297346] [2022-11-16 11:46:15,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:46:15,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:15,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:15,132 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:15,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:46:24,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:46:24,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:46:24,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 31914 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:46:24,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-16 11:46:38,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-16 11:46:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508015270] [2022-11-16 11:46:52,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:46:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522297346] [2022-11-16 11:46:52,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522297346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:46:52,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:46:52,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-16 11:46:52,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329303030] [2022-11-16 11:46:52,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:52,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:46:52,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:46:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:46:52,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-16 11:46:52,298 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) [2022-11-16 11:46:52,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:52,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-16 11:46:52,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:21,815 INFO L130 PetriNetUnfolder]: 15/12600 cut-off events. [2022-11-16 11:47:21,815 INFO L131 PetriNetUnfolder]: For 30280/30280 co-relation queries the response was YES. [2022-11-16 11:47:21,838 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. [2022-11-16 11:47:21,856 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 104 selfloop transitions, 30 changer transitions 0/589 dead transitions. [2022-11-16 11:47:21,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 589 transitions, 5561 flow [2022-11-16 11:47:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:47:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:47:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5349 transitions. [2022-11-16 11:47:21,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783251231527094 [2022-11-16 11:47:21,863 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5349 transitions. [2022-11-16 11:47:21,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5349 transitions. [2022-11-16 11:47:21,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:21,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5349 transitions. [2022-11-16 11:47:21,872 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) [2022-11-16 11:47:21,879 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) [2022-11-16 11:47:21,881 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) [2022-11-16 11:47:21,881 INFO L175 Difference]: Start difference. First operand has 390 places, 495 transitions, 4901 flow. Second operand 30 states and 5349 transitions. [2022-11-16 11:47:21,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 589 transitions, 5561 flow [2022-11-16 11:47:21,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 589 transitions, 5531 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-16 11:47:22,001 INFO L231 Difference]: Finished difference. Result has 416 places, 505 transitions, 5064 flow [2022-11-16 11:47:22,001 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} [2022-11-16 11:47:22,002 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 222 predicate places. [2022-11-16 11:47:22,002 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 505 transitions, 5064 flow [2022-11-16 11:47:22,003 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) [2022-11-16 11:47:22,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:22,007 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] [2022-11-16 11:47:22,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:22,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:47:22,222 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:47:22,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:22,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1595849169, now seen corresponding path program 5 times [2022-11-16 11:47:22,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:22,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408577942] [2022-11-16 11:47:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:22,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:23,911 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:23,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912400102] [2022-11-16 11:47:23,912 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:47:23,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:23,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:23,914 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:23,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497101c9-7cb5-4f60-ad5f-f5e8c85cdd40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process