./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.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_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/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_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/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_da5a2d94-4128-4446-bfc0-83de4ade1529/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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- 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 11:09:17,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:09:17,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:09:17,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:09:17,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:09:17,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:09:17,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:09:17,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:09:17,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:09:17,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:09:17,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:09:17,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:09:17,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:09:17,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:09:17,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:09:17,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:09:17,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:09:17,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:09:17,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:09:17,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:09:17,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:09:17,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:09:17,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:09:17,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:09:17,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:09:17,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:09:17,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:09:17,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:09:17,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:09:17,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:09:17,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:09:17,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:09:17,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:09:17,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:09:17,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:09:17,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:09:17,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:09:17,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:09:17,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:09:17,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:09:17,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:09:17,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:09:17,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:09:17,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:09:17,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:09:17,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:09:17,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:09:17,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:09:17,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:09:17,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:09:17,525 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:09:17,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:09:17,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:09:17,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:09:17,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:09:17,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:09:17,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:09:17,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:09:17,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:09:17,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:09:17,528 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:09:17,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:09:17,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:09:17,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:09:17,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:09:17,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:09:17,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:09:17,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:09:17,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:09:17,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:09:17,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:09:17,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:09:17,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:09:17,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:09:17,531 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:09:17,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:09:17,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:09:17,531 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_da5a2d94-4128-4446-bfc0-83de4ade1529/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2022-11-16 11:09:17,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:09:17,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:09:17,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:09:17,880 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:09:17,880 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:09:17,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-16 11:09:17,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/data/a6be08bdb/5569a64420b54301b52ba054c27f3954/FLAG8585f1bd8 [2022-11-16 11:09:18,537 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:09:18,538 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-16 11:09:18,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/data/a6be08bdb/5569a64420b54301b52ba054c27f3954/FLAG8585f1bd8 [2022-11-16 11:09:18,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/data/a6be08bdb/5569a64420b54301b52ba054c27f3954 [2022-11-16 11:09:18,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:09:18,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:09:18,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:09:18,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:09:18,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:09:18,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:09:18" (1/1) ... [2022-11-16 11:09:18,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0249bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:18, skipping insertion in model container [2022-11-16 11:09:18,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:09:18" (1/1) ... [2022-11-16 11:09:18,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:09:18,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:09:19,320 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:09:19,321 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:09:19,321 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:09:19,322 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:09:19,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:09:19,372 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:09:19,412 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:09:19,412 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:09:19,413 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:09:19,413 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:09:19,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:09:19,479 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:09:19,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19 WrapperNode [2022-11-16 11:09:19,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:09:19,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:09:19,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:09:19,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:09:19,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,531 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 137 [2022-11-16 11:09:19,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:09:19,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:09:19,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:09:19,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:09:19,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,593 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:09:19,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:09:19,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:09:19,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:09:19,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (1/1) ... [2022-11-16 11:09:19,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:09:19,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:19,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:09:19,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:09:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:09:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:09:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:09:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:09:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:09:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:09:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:09:19,717 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 11:09:19,933 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:09:19,935 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:09:20,398 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:09:20,407 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:09:20,407 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:09:20,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:09:20 BoogieIcfgContainer [2022-11-16 11:09:20,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:09:20,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:09:20,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:09:20,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:09:20,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:09:18" (1/3) ... [2022-11-16 11:09:20,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65845362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:09:20, skipping insertion in model container [2022-11-16 11:09:20,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:19" (2/3) ... [2022-11-16 11:09:20,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65845362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:09:20, skipping insertion in model container [2022-11-16 11:09:20,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:09:20" (3/3) ... [2022-11-16 11:09:20,424 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2022-11-16 11:09:20,438 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:09:20,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:09:20,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 11:09:20,451 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:09:20,557 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:09:20,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 217 transitions, 444 flow [2022-11-16 11:09:20,692 INFO L130 PetriNetUnfolder]: 15/215 cut-off events. [2022-11-16 11:09:20,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:09:20,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 215 events. 15/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 513 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2022-11-16 11:09:20,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 217 transitions, 444 flow [2022-11-16 11:09:20,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 215 transitions, 436 flow [2022-11-16 11:09:20,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:09:20,757 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;@69c2f098, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:09:20,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-16 11:09:20,791 INFO L130 PetriNetUnfolder]: 3/56 cut-off events. [2022-11-16 11:09:20,792 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:09:20,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:20,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:20,793 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 11:09:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash -648803015, now seen corresponding path program 1 times [2022-11-16 11:09:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:20,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203623065] [2022-11-16 11:09:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:20,936 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:20,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248782479] [2022-11-16 11:09:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:20,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:20,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:20,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:20,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:09:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:21,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:21,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:21,194 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 11:09:21,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:21,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:21,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203623065] [2022-11-16 11:09:21,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:21,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248782479] [2022-11-16 11:09:21,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248782479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:21,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:21,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:09:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458575827] [2022-11-16 11:09:21,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:21,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:09:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:09:21,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:09:21,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 217 [2022-11-16 11:09:21,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 215 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 11:09:21,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:21,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 217 [2022-11-16 11:09:21,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:21,463 INFO L130 PetriNetUnfolder]: 7/266 cut-off events. [2022-11-16 11:09:21,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:09:21,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 266 events. 7/266 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. 9/247 useless extension candidates. Maximal degree in co-relation 234. Up to 17 conditions per place. [2022-11-16 11:09:21,471 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 23 selfloop transitions, 2 changer transitions 1/215 dead transitions. [2022-11-16 11:09:21,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 215 transitions, 486 flow [2022-11-16 11:09:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:09:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:09:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2022-11-16 11:09:21,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9447004608294931 [2022-11-16 11:09:21,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2022-11-16 11:09:21,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2022-11-16 11:09:21,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:21,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2022-11-16 11:09:21,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 11:09:21,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 11:09:21,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 11:09:21,516 INFO L175 Difference]: Start difference. First operand has 207 places, 215 transitions, 436 flow. Second operand 3 states and 615 transitions. [2022-11-16 11:09:21,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 215 transitions, 486 flow [2022-11-16 11:09:21,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 215 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:09:21,526 INFO L231 Difference]: Finished difference. Result has 208 places, 206 transitions, 430 flow [2022-11-16 11:09:21,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=208, PETRI_TRANSITIONS=206} [2022-11-16 11:09:21,532 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 1 predicate places. [2022-11-16 11:09:21,532 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 206 transitions, 430 flow [2022-11-16 11:09:21,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 11:09:21,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:21,534 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] [2022-11-16 11:09:21,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:09:21,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:09:21,740 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 11:09:21,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1361942790, now seen corresponding path program 1 times [2022-11-16 11:09:21,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:21,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996506413] [2022-11-16 11:09:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:21,927 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 11:09:21,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:21,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996506413] [2022-11-16 11:09:21,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996506413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:21,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:21,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:21,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894581310] [2022-11-16 11:09:21,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:21,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:09:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:09:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:09:21,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 217 [2022-11-16 11:09:21,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 206 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 11:09:21,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:21,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 217 [2022-11-16 11:09:21,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:22,026 INFO L130 PetriNetUnfolder]: 7/349 cut-off events. [2022-11-16 11:09:22,026 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:09:22,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 349 events. 7/349 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 710 event pairs, 0 based on Foata normal form. 2/323 useless extension candidates. Maximal degree in co-relation 248. Up to 22 conditions per place. [2022-11-16 11:09:22,029 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 17 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2022-11-16 11:09:22,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 212 transitions, 480 flow [2022-11-16 11:09:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:09:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:09:22,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2022-11-16 11:09:22,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9324116743471582 [2022-11-16 11:09:22,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2022-11-16 11:09:22,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2022-11-16 11:09:22,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:22,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2022-11-16 11:09:22,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 11:09:22,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 11:09:22,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 11:09:22,038 INFO L175 Difference]: Start difference. First operand has 208 places, 206 transitions, 430 flow. Second operand 3 states and 607 transitions. [2022-11-16 11:09:22,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 212 transitions, 480 flow [2022-11-16 11:09:22,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 212 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:09:22,045 INFO L231 Difference]: Finished difference. Result has 209 places, 207 transitions, 444 flow [2022-11-16 11:09:22,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=209, PETRI_TRANSITIONS=207} [2022-11-16 11:09:22,046 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 2 predicate places. [2022-11-16 11:09:22,046 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 207 transitions, 444 flow [2022-11-16 11:09:22,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 11:09:22,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:22,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:22,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:09:22,048 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 11:09:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:22,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1662733345, now seen corresponding path program 1 times [2022-11-16 11:09:22,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:22,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100721618] [2022-11-16 11:09:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:22,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:22,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:22,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950540070] [2022-11-16 11:09:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:22,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:22,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:22,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:22,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:09:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:22,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:22,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:22,494 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 11:09:22,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:22,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100721618] [2022-11-16 11:09:22,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950540070] [2022-11-16 11:09:22,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950540070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:22,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:22,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978572159] [2022-11-16 11:09:22,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:22,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:22,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:22,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:22,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-16 11:09:22,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 207 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:22,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:22,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-16 11:09:22,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:22,649 INFO L130 PetriNetUnfolder]: 7/349 cut-off events. [2022-11-16 11:09:22,649 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 11:09:22,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 349 events. 7/349 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 711 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 201. Up to 30 conditions per place. [2022-11-16 11:09:22,654 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 23 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2022-11-16 11:09:22,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 216 transitions, 518 flow [2022-11-16 11:09:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:09:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:09:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 979 transitions. [2022-11-16 11:09:22,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023041474654377 [2022-11-16 11:09:22,659 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 979 transitions. [2022-11-16 11:09:22,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 979 transitions. [2022-11-16 11:09:22,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:22,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 979 transitions. [2022-11-16 11:09:22,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 11:09:22,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 11:09:22,666 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 11:09:22,667 INFO L175 Difference]: Start difference. First operand has 209 places, 207 transitions, 444 flow. Second operand 5 states and 979 transitions. [2022-11-16 11:09:22,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 216 transitions, 518 flow [2022-11-16 11:09:22,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 216 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:09:22,673 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 476 flow [2022-11-16 11:09:22,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-16 11:09:22,676 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 9 predicate places. [2022-11-16 11:09:22,676 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 476 flow [2022-11-16 11:09:22,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:22,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:22,677 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:22,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:22,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:22,883 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 11:09:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash 5126545, now seen corresponding path program 1 times [2022-11-16 11:09:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:22,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325135871] [2022-11-16 11:09:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:22,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599393462] [2022-11-16 11:09:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:22,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:22,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:22,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:22,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:09:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:23,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:23,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:23,254 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 11:09:23,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:23,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:23,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325135871] [2022-11-16 11:09:23,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:23,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599393462] [2022-11-16 11:09:23,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599393462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:23,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:23,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499036177] [2022-11-16 11:09:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:23,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:23,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:23,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:23,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-16 11:09:23,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states 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 11:09:23,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:23,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-16 11:09:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:23,364 INFO L130 PetriNetUnfolder]: 7/345 cut-off events. [2022-11-16 11:09:23,364 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 11:09:23,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 345 events. 7/345 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 703 event pairs, 0 based on Foata normal form. 4/331 useless extension candidates. Maximal degree in co-relation 250. Up to 28 conditions per place. [2022-11-16 11:09:23,366 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 16 selfloop transitions, 5 changer transitions 0/209 dead transitions. [2022-11-16 11:09:23,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 209 transitions, 516 flow [2022-11-16 11:09:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:09:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 779 transitions. [2022-11-16 11:09:23,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8974654377880185 [2022-11-16 11:09:23,370 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 779 transitions. [2022-11-16 11:09:23,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 779 transitions. [2022-11-16 11:09:23,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:23,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 779 transitions. [2022-11-16 11:09:23,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 11:09:23,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 11:09:23,376 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 11:09:23,377 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 476 flow. Second operand 4 states and 779 transitions. [2022-11-16 11:09:23,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 209 transitions, 516 flow [2022-11-16 11:09:23,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 209 transitions, 507 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:09:23,382 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 478 flow [2022-11-16 11:09:23,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=216, PETRI_TRANSITIONS=209} [2022-11-16 11:09:23,384 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 9 predicate places. [2022-11-16 11:09:23,384 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 478 flow [2022-11-16 11:09:23,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states 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 11:09:23,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:23,385 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:23,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:23,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:23,592 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 11:09:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:23,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1278315239, now seen corresponding path program 1 times [2022-11-16 11:09:23,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:23,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462102763] [2022-11-16 11:09:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:23,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:23,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641919877] [2022-11-16 11:09:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:23,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:23,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:23,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:23,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:09:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:23,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:09:23,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:23,945 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 11:09:23,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:24,035 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 11:09:24,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:24,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462102763] [2022-11-16 11:09:24,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:24,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641919877] [2022-11-16 11:09:24,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641919877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:24,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:24,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:09:24,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904945544] [2022-11-16 11:09:24,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:24,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:09:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:09:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:09:24,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-16 11:09:24,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 192.875) internal successors, (1543), 8 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states 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 11:09:24,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:24,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-16 11:09:24,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:24,263 INFO L130 PetriNetUnfolder]: 7/431 cut-off events. [2022-11-16 11:09:24,263 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-16 11:09:24,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 431 events. 7/431 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 466 event pairs, 0 based on Foata normal form. 6/419 useless extension candidates. Maximal degree in co-relation 317. Up to 22 conditions per place. [2022-11-16 11:09:24,266 INFO L137 encePairwiseOnDemand]: 210/217 looper letters, 29 selfloop transitions, 10 changer transitions 0/227 dead transitions. [2022-11-16 11:09:24,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 227 transitions, 610 flow [2022-11-16 11:09:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:09:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:09:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-11-16 11:09:24,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8965693804403482 [2022-11-16 11:09:24,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-11-16 11:09:24,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-11-16 11:09:24,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:24,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-11-16 11:09:24,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states 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 11:09:24,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states 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 11:09:24,282 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states 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 11:09:24,282 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 478 flow. Second operand 9 states and 1751 transitions. [2022-11-16 11:09:24,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 227 transitions, 610 flow [2022-11-16 11:09:24,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 227 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:09:24,288 INFO L231 Difference]: Finished difference. Result has 227 places, 213 transitions, 528 flow [2022-11-16 11:09:24,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=227, PETRI_TRANSITIONS=213} [2022-11-16 11:09:24,289 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 20 predicate places. [2022-11-16 11:09:24,289 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 213 transitions, 528 flow [2022-11-16 11:09:24,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 192.875) internal successors, (1543), 8 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states 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 11:09:24,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:24,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:24,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:24,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:24,496 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 11:09:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash -235804927, now seen corresponding path program 1 times [2022-11-16 11:09:24,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:24,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101563128] [2022-11-16 11:09:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:24,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:24,544 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:24,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220129221] [2022-11-16 11:09:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:24,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:24,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:24,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:24,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:09:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:09:24,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:25,043 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 11:09:25,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:25,325 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 11:09:25,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:25,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101563128] [2022-11-16 11:09:25,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:25,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220129221] [2022-11-16 11:09:25,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220129221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:25,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:25,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:09:25,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717179681] [2022-11-16 11:09:25,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:25,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:09:25,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:25,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:09:25,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:09:25,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-16 11:09:25,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 213 transitions, 528 flow. Second operand has 14 states, 14 states have (on average 193.64285714285714) internal successors, (2711), 14 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states 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 11:09:25,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:25,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-16 11:09:25,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:25,666 INFO L130 PetriNetUnfolder]: 13/655 cut-off events. [2022-11-16 11:09:25,666 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-16 11:09:25,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 655 events. 13/655 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1271 event pairs, 0 based on Foata normal form. 4/623 useless extension candidates. Maximal degree in co-relation 539. Up to 19 conditions per place. [2022-11-16 11:09:25,671 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 37 selfloop transitions, 16 changer transitions 0/241 dead transitions. [2022-11-16 11:09:25,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 241 transitions, 742 flow [2022-11-16 11:09:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:09:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:09:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2905 transitions. [2022-11-16 11:09:25,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8924731182795699 [2022-11-16 11:09:25,679 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2905 transitions. [2022-11-16 11:09:25,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2905 transitions. [2022-11-16 11:09:25,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:25,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2905 transitions. [2022-11-16 11:09:25,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 193.66666666666666) internal successors, (2905), 15 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states 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 11:09:25,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 217.0) internal successors, (3472), 16 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states 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 11:09:25,698 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 217.0) internal successors, (3472), 16 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states 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 11:09:25,699 INFO L175 Difference]: Start difference. First operand has 227 places, 213 transitions, 528 flow. Second operand 15 states and 2905 transitions. [2022-11-16 11:09:25,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 241 transitions, 742 flow [2022-11-16 11:09:25,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 241 transitions, 724 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 11:09:25,712 INFO L231 Difference]: Finished difference. Result has 236 places, 217 transitions, 577 flow [2022-11-16 11:09:25,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=577, PETRI_PLACES=236, PETRI_TRANSITIONS=217} [2022-11-16 11:09:25,715 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 29 predicate places. [2022-11-16 11:09:25,716 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 217 transitions, 577 flow [2022-11-16 11:09:25,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.64285714285714) internal successors, (2711), 14 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states 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 11:09:25,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:25,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:25,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:25,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:25,926 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 11:09:25,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:25,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1415545401, now seen corresponding path program 2 times [2022-11-16 11:09:25,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:25,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636382373] [2022-11-16 11:09:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:25,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:25,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:25,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888305564] [2022-11-16 11:09:25,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:25,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:25,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:25,985 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:25,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:09:26,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:09:26,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:26,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:26,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:26,441 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 11:09:26,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:26,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:26,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636382373] [2022-11-16 11:09:26,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:26,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888305564] [2022-11-16 11:09:26,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888305564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:26,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:26,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:26,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228324256] [2022-11-16 11:09:26,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:26,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:26,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:26,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-16 11:09:26,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 217 transitions, 577 flow. Second operand has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 11:09:26,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:26,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-16 11:09:26,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:26,681 INFO L130 PetriNetUnfolder]: 13/655 cut-off events. [2022-11-16 11:09:26,681 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-16 11:09:26,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 655 events. 13/655 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1262 event pairs, 0 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 569. Up to 50 conditions per place. [2022-11-16 11:09:26,686 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 29 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2022-11-16 11:09:26,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 229 transitions, 669 flow [2022-11-16 11:09:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:09:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:09:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 970 transitions. [2022-11-16 11:09:26,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8940092165898618 [2022-11-16 11:09:26,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 970 transitions. [2022-11-16 11:09:26,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 970 transitions. [2022-11-16 11:09:26,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:26,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 970 transitions. [2022-11-16 11:09:26,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.0) internal successors, (970), 5 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 11:09:26,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 11:09:26,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 11:09:26,697 INFO L175 Difference]: Start difference. First operand has 236 places, 217 transitions, 577 flow. Second operand 5 states and 970 transitions. [2022-11-16 11:09:26,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 229 transitions, 669 flow [2022-11-16 11:09:26,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 229 transitions, 610 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-16 11:09:26,704 INFO L231 Difference]: Finished difference. Result has 231 places, 220 transitions, 552 flow [2022-11-16 11:09:26,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=231, PETRI_TRANSITIONS=220} [2022-11-16 11:09:26,705 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 24 predicate places. [2022-11-16 11:09:26,706 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 220 transitions, 552 flow [2022-11-16 11:09:26,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 11:09:26,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:26,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:26,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:26,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:26,915 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 11:09:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:26,916 INFO L85 PathProgramCache]: Analyzing trace with hash -932234146, now seen corresponding path program 1 times [2022-11-16 11:09:26,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:26,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600797770] [2022-11-16 11:09:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:26,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:26,955 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:26,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289540503] [2022-11-16 11:09:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:26,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:26,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:26,956 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:26,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:09:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:27,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:09:27,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:27,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:27,930 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 11:09:27,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:27,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600797770] [2022-11-16 11:09:27,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:27,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289540503] [2022-11-16 11:09:27,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289540503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:27,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:27,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:09:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572988778] [2022-11-16 11:09:27,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:27,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:09:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:27,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:09:27,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:09:27,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-16 11:09:27,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 220 transitions, 552 flow. Second operand has 16 states, 16 states have (on average 193.6875) internal successors, (3099), 16 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states 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 11:09:27,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:27,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-16 11:09:27,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:28,477 INFO L130 PetriNetUnfolder]: 7/765 cut-off events. [2022-11-16 11:09:28,477 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-16 11:09:28,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 765 events. 7/765 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 481 event pairs, 0 based on Foata normal form. 8/759 useless extension candidates. Maximal degree in co-relation 604. Up to 20 conditions per place. [2022-11-16 11:09:28,481 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 60 selfloop transitions, 22 changer transitions 0/273 dead transitions. [2022-11-16 11:09:28,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 273 transitions, 909 flow [2022-11-16 11:09:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:09:28,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:09:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4075 transitions. [2022-11-16 11:09:28,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8942286592056178 [2022-11-16 11:09:28,492 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4075 transitions. [2022-11-16 11:09:28,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4075 transitions. [2022-11-16 11:09:28,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:28,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4075 transitions. [2022-11-16 11:09:28,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 194.04761904761904) internal successors, (4075), 21 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states 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 11:09:28,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states 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 11:09:28,521 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states 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 11:09:28,521 INFO L175 Difference]: Start difference. First operand has 231 places, 220 transitions, 552 flow. Second operand 21 states and 4075 transitions. [2022-11-16 11:09:28,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 273 transitions, 909 flow [2022-11-16 11:09:28,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 899 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 11:09:28,529 INFO L231 Difference]: Finished difference. Result has 255 places, 229 transitions, 662 flow [2022-11-16 11:09:28,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=662, PETRI_PLACES=255, PETRI_TRANSITIONS=229} [2022-11-16 11:09:28,531 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 48 predicate places. [2022-11-16 11:09:28,531 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 229 transitions, 662 flow [2022-11-16 11:09:28,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 193.6875) internal successors, (3099), 16 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states 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 11:09:28,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:28,533 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] [2022-11-16 11:09:28,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:28,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:09:28,742 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 11:09:28,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:28,742 INFO L85 PathProgramCache]: Analyzing trace with hash -740231522, now seen corresponding path program 2 times [2022-11-16 11:09:28,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:28,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505257360] [2022-11-16 11:09:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:28,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:28,813 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:28,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872627072] [2022-11-16 11:09:28,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:28,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:28,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:28,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:28,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:09:29,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:09:29,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:29,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:29,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:29,583 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 11:09:29,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:29,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:29,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505257360] [2022-11-16 11:09:29,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:29,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872627072] [2022-11-16 11:09:29,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872627072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:29,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:29,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:29,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623463256] [2022-11-16 11:09:29,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:29,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:29,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-16 11:09:29,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 229 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 11:09:29,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:29,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-16 11:09:29,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:29,862 INFO L130 PetriNetUnfolder]: 7/763 cut-off events. [2022-11-16 11:09:29,862 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-16 11:09:29,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 763 events. 7/763 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 477 event pairs, 0 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 605. Up to 80 conditions per place. [2022-11-16 11:09:29,866 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 18 selfloop transitions, 5 changer transitions 0/227 dead transitions. [2022-11-16 11:09:29,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 227 transitions, 698 flow [2022-11-16 11:09:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:09:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 769 transitions. [2022-11-16 11:09:29,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-11-16 11:09:29,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 769 transitions. [2022-11-16 11:09:29,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 769 transitions. [2022-11-16 11:09:29,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:29,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 769 transitions. [2022-11-16 11:09:29,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states 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 11:09:29,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 11:09:29,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 11:09:29,875 INFO L175 Difference]: Start difference. First operand has 255 places, 229 transitions, 662 flow. Second operand 4 states and 769 transitions. [2022-11-16 11:09:29,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 227 transitions, 698 flow [2022-11-16 11:09:29,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 227 transitions, 675 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 11:09:29,885 INFO L231 Difference]: Finished difference. Result has 246 places, 227 transitions, 639 flow [2022-11-16 11:09:29,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=639, PETRI_PLACES=246, PETRI_TRANSITIONS=227} [2022-11-16 11:09:29,887 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 39 predicate places. [2022-11-16 11:09:29,887 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 227 transitions, 639 flow [2022-11-16 11:09:29,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 11:09:29,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:29,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:29,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:30,119 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 11:09:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1998132056, now seen corresponding path program 1 times [2022-11-16 11:09:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643130168] [2022-11-16 11:09:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:30,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:30,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128256993] [2022-11-16 11:09:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:30,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:30,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:30,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:30,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:09:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:30,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:09:30,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:31,322 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 11:09:31,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:32,087 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 11:09:32,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:32,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643130168] [2022-11-16 11:09:32,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:32,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128256993] [2022-11-16 11:09:32,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128256993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:32,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:32,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 11:09:32,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766116322] [2022-11-16 11:09:32,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:32,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:09:32,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:09:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:09:32,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-16 11:09:32,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 227 transitions, 639 flow. Second operand has 32 states, 32 states have (on average 194.125) internal successors, (6212), 32 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states 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 11:09:32,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:32,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-16 11:09:32,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:33,406 INFO L130 PetriNetUnfolder]: 7/1435 cut-off events. [2022-11-16 11:09:33,406 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-16 11:09:33,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1435 events. 7/1435 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 518 event pairs, 0 based on Foata normal form. 16/1437 useless extension candidates. Maximal degree in co-relation 1194. Up to 38 conditions per place. [2022-11-16 11:09:33,411 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 124 selfloop transitions, 46 changer transitions 0/359 dead transitions. [2022-11-16 11:09:33,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 359 transitions, 1575 flow [2022-11-16 11:09:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:09:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:09:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8727 transitions. [2022-11-16 11:09:33,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8937019969278034 [2022-11-16 11:09:33,427 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8727 transitions. [2022-11-16 11:09:33,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8727 transitions. [2022-11-16 11:09:33,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:33,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8727 transitions. [2022-11-16 11:09:33,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 193.93333333333334) internal successors, (8727), 45 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states 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 11:09:33,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 217.0) internal successors, (9982), 46 states have internal predecessors, (9982), 0 states have call successors, (0), 0 states 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 11:09:33,473 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 217.0) internal successors, (9982), 46 states have internal predecessors, (9982), 0 states have call successors, (0), 0 states 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 11:09:33,474 INFO L175 Difference]: Start difference. First operand has 246 places, 227 transitions, 639 flow. Second operand 45 states and 8727 transitions. [2022-11-16 11:09:33,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 359 transitions, 1575 flow [2022-11-16 11:09:33,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 359 transitions, 1565 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:09:33,485 INFO L231 Difference]: Finished difference. Result has 296 places, 252 transitions, 952 flow [2022-11-16 11:09:33,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=952, PETRI_PLACES=296, PETRI_TRANSITIONS=252} [2022-11-16 11:09:33,487 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 89 predicate places. [2022-11-16 11:09:33,487 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 252 transitions, 952 flow [2022-11-16 11:09:33,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 194.125) internal successors, (6212), 32 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states 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 11:09:33,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:33,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:33,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:33,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:09:33,698 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 11:09:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash 282355752, now seen corresponding path program 2 times [2022-11-16 11:09:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:33,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906043301] [2022-11-16 11:09:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:33,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:33,841 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:33,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190685196] [2022-11-16 11:09:33,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:33,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:33,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:33,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:33,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:09:34,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:09:34,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:34,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:34,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:34,384 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 11:09:34,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:34,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:34,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906043301] [2022-11-16 11:09:34,385 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:34,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190685196] [2022-11-16 11:09:34,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190685196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:34,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:34,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:34,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374709794] [2022-11-16 11:09:34,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:34,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:34,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:34,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:34,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-16 11:09:34,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 252 transitions, 952 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 11:09:34,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:34,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-16 11:09:34,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:34,942 INFO L130 PetriNetUnfolder]: 23/1491 cut-off events. [2022-11-16 11:09:34,942 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-11-16 11:09:34,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 1491 events. 23/1491 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 982 event pairs, 3 based on Foata normal form. 0/1471 useless extension candidates. Maximal degree in co-relation 1897. Up to 38 conditions per place. [2022-11-16 11:09:34,950 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 16 selfloop transitions, 4 changer transitions 0/254 dead transitions. [2022-11-16 11:09:34,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 254 transitions, 1002 flow [2022-11-16 11:09:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:09:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:09:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 971 transitions. [2022-11-16 11:09:34,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8949308755760369 [2022-11-16 11:09:34,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 971 transitions. [2022-11-16 11:09:34,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 971 transitions. [2022-11-16 11:09:34,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:34,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 971 transitions. [2022-11-16 11:09:34,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 11:09:34,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 11:09:34,958 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 11:09:34,958 INFO L175 Difference]: Start difference. First operand has 296 places, 252 transitions, 952 flow. Second operand 5 states and 971 transitions. [2022-11-16 11:09:34,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 254 transitions, 1002 flow [2022-11-16 11:09:34,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 254 transitions, 945 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-16 11:09:34,970 INFO L231 Difference]: Finished difference. Result has 281 places, 251 transitions, 901 flow [2022-11-16 11:09:34,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=901, PETRI_PLACES=281, PETRI_TRANSITIONS=251} [2022-11-16 11:09:34,971 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 74 predicate places. [2022-11-16 11:09:34,971 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 251 transitions, 901 flow [2022-11-16 11:09:34,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 11:09:34,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:34,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:34,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:35,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:09:35,179 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 11:09:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:35,179 INFO L85 PathProgramCache]: Analyzing trace with hash 282386537, now seen corresponding path program 1 times [2022-11-16 11:09:35,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:35,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489761359] [2022-11-16 11:09:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:35,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:35,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:35,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604599953] [2022-11-16 11:09:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:35,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:35,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:35,311 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:35,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:09:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:36,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:09:36,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:37,546 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 11:09:37,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:39,313 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 11:09:39,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:39,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489761359] [2022-11-16 11:09:39,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:39,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604599953] [2022-11-16 11:09:39,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604599953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:39,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:39,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 11:09:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786427499] [2022-11-16 11:09:39,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:39,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 11:09:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 11:09:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 11:09:39,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-16 11:09:39,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 251 transitions, 901 flow. Second operand has 61 states, 61 states have (on average 194.37704918032787) internal successors, (11857), 61 states have internal predecessors, (11857), 0 states have call successors, (0), 0 states 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 11:09:39,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:39,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-16 11:09:39,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:43,223 INFO L130 PetriNetUnfolder]: 7/2694 cut-off events. [2022-11-16 11:09:43,223 INFO L131 PetriNetUnfolder]: For 4943/4943 co-relation queries the response was YES. [2022-11-16 11:09:43,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 2694 events. 7/2694 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 587 event pairs, 0 based on Foata normal form. 30/2712 useless extension candidates. Maximal degree in co-relation 4393. Up to 96 conditions per place. [2022-11-16 11:09:43,236 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 244 selfloop transitions, 91 changer transitions 0/523 dead transitions. [2022-11-16 11:09:43,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 523 transitions, 2983 flow [2022-11-16 11:09:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 11:09:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 11:09:43,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 17449 transitions. [2022-11-16 11:09:43,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8934459805427547 [2022-11-16 11:09:43,260 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 17449 transitions. [2022-11-16 11:09:43,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 17449 transitions. [2022-11-16 11:09:43,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:43,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 17449 transitions. [2022-11-16 11:09:43,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 193.87777777777777) internal successors, (17449), 90 states have internal predecessors, (17449), 0 states have call successors, (0), 0 states 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 11:09:43,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 217.0) internal successors, (19747), 91 states have internal predecessors, (19747), 0 states have call successors, (0), 0 states 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 11:09:43,332 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 217.0) internal successors, (19747), 91 states have internal predecessors, (19747), 0 states have call successors, (0), 0 states 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 11:09:43,332 INFO L175 Difference]: Start difference. First operand has 281 places, 251 transitions, 901 flow. Second operand 90 states and 17449 transitions. [2022-11-16 11:09:43,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 523 transitions, 2983 flow [2022-11-16 11:09:43,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 523 transitions, 2975 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:09:43,351 INFO L231 Difference]: Finished difference. Result has 382 places, 297 transitions, 1582 flow [2022-11-16 11:09:43,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1582, PETRI_PLACES=382, PETRI_TRANSITIONS=297} [2022-11-16 11:09:43,354 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 175 predicate places. [2022-11-16 11:09:43,354 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 297 transitions, 1582 flow [2022-11-16 11:09:43,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 194.37704918032787) internal successors, (11857), 61 states have internal predecessors, (11857), 0 states have call successors, (0), 0 states 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 11:09:43,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:43,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:43,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:43,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:09:43,568 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 11:09:43,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1185555336, now seen corresponding path program 2 times [2022-11-16 11:09:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:43,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412841833] [2022-11-16 11:09:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:43,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:43,797 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:43,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140978511] [2022-11-16 11:09:43,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:43,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:43,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:43,803 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:43,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:09:45,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:09:45,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:45,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 5208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:09:45,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:47,125 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 11:09:47,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:48,904 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 11:09:48,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412841833] [2022-11-16 11:09:48,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140978511] [2022-11-16 11:09:48,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140978511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:48,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:48,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:09:48,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710144168] [2022-11-16 11:09:48,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:48,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:09:48,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:09:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:09:48,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-16 11:09:48,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 297 transitions, 1582 flow. Second operand has 8 states, 8 states have (on average 190.75) internal successors, (1526), 8 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states 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 11:09:48,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:48,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-16 11:09:48,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:51,791 INFO L130 PetriNetUnfolder]: 8/4000 cut-off events. [2022-11-16 11:09:51,791 INFO L131 PetriNetUnfolder]: For 4582/4582 co-relation queries the response was YES. [2022-11-16 11:09:51,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6701 conditions, 4000 events. 8/4000 cut-off events. For 4582/4582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 526 event pairs, 0 based on Foata normal form. 3/3990 useless extension candidates. Maximal degree in co-relation 4617. Up to 187 conditions per place. [2022-11-16 11:09:51,803 INFO L137 encePairwiseOnDemand]: 210/217 looper letters, 38 selfloop transitions, 9 changer transitions 0/321 dead transitions. [2022-11-16 11:09:51,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 321 transitions, 1738 flow [2022-11-16 11:09:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:09:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:09:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1733 transitions. [2022-11-16 11:09:51,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8873527905785971 [2022-11-16 11:09:51,807 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1733 transitions. [2022-11-16 11:09:51,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1733 transitions. [2022-11-16 11:09:51,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:51,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1733 transitions. [2022-11-16 11:09:51,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.55555555555554) internal successors, (1733), 9 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states 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 11:09:51,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states 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 11:09:51,815 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states 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 11:09:51,815 INFO L175 Difference]: Start difference. First operand has 382 places, 297 transitions, 1582 flow. Second operand 9 states and 1733 transitions. [2022-11-16 11:09:51,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 321 transitions, 1738 flow [2022-11-16 11:09:51,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 321 transitions, 1619 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 11:09:51,852 INFO L231 Difference]: Finished difference. Result has 353 places, 301 transitions, 1519 flow [2022-11-16 11:09:51,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1519, PETRI_PLACES=353, PETRI_TRANSITIONS=301} [2022-11-16 11:09:51,853 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 146 predicate places. [2022-11-16 11:09:51,853 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 301 transitions, 1519 flow [2022-11-16 11:09:51,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.75) internal successors, (1526), 8 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states 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 11:09:51,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:51,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:51,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:52,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:52,070 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 11:09:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:52,071 INFO L85 PathProgramCache]: Analyzing trace with hash -894325561, now seen corresponding path program 1 times [2022-11-16 11:09:52,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:52,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252503796] [2022-11-16 11:09:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:52,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:52,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:52,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212676969] [2022-11-16 11:09:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:52,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:52,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:52,343 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:52,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:09:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:56,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 5339 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:09:56,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:58,519 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 11:09:58,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:00,586 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 11:10:00,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:00,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252503796] [2022-11-16 11:10:00,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:10:00,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212676969] [2022-11-16 11:10:00,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212676969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:00,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:10:00,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:10:00,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37819507] [2022-11-16 11:10:00,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:00,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:10:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:10:00,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:10:00,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 217 [2022-11-16 11:10:00,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 301 transitions, 1519 flow. Second operand has 14 states, 14 states have (on average 182.35714285714286) internal successors, (2553), 14 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states 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 11:10:00,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:00,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 217 [2022-11-16 11:10:00,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:03,728 INFO L130 PetriNetUnfolder]: 8/3968 cut-off events. [2022-11-16 11:10:03,728 INFO L131 PetriNetUnfolder]: For 4795/4795 co-relation queries the response was YES. [2022-11-16 11:10:03,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6973 conditions, 3968 events. 8/3968 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 432 event pairs, 0 based on Foata normal form. 32/3987 useless extension candidates. Maximal degree in co-relation 4758. Up to 307 conditions per place. [2022-11-16 11:10:03,738 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 224 selfloop transitions, 144 changer transitions 0/541 dead transitions. [2022-11-16 11:10:03,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 541 transitions, 4379 flow [2022-11-16 11:10:03,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:10:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:10:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4351 transitions. [2022-11-16 11:10:03,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8354454685099847 [2022-11-16 11:10:03,745 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4351 transitions. [2022-11-16 11:10:03,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4351 transitions. [2022-11-16 11:10:03,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:03,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4351 transitions. [2022-11-16 11:10:03,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 181.29166666666666) internal successors, (4351), 24 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states 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 11:10:03,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 217.0) internal successors, (5425), 25 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states 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 11:10:03,764 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 217.0) internal successors, (5425), 25 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states 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 11:10:03,764 INFO L175 Difference]: Start difference. First operand has 353 places, 301 transitions, 1519 flow. Second operand 24 states and 4351 transitions. [2022-11-16 11:10:03,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 541 transitions, 4379 flow [2022-11-16 11:10:03,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 541 transitions, 4363 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 11:10:03,814 INFO L231 Difference]: Finished difference. Result has 377 places, 432 transitions, 3558 flow [2022-11-16 11:10:03,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3558, PETRI_PLACES=377, PETRI_TRANSITIONS=432} [2022-11-16 11:10:03,815 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 170 predicate places. [2022-11-16 11:10:03,815 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 432 transitions, 3558 flow [2022-11-16 11:10:03,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 182.35714285714286) internal successors, (2553), 14 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states 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 11:10:03,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:03,817 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:03,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:04,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:04,033 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 11:10:04,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:04,033 INFO L85 PathProgramCache]: Analyzing trace with hash 123984631, now seen corresponding path program 1 times [2022-11-16 11:10:04,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:04,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448488995] [2022-11-16 11:10:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:04,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:04,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:10:04,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230320375] [2022-11-16 11:10:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:04,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:04,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:04,283 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:04,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:10:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:11,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 5507 conjuncts, 226 conjunts are in the unsatisfiable core [2022-11-16 11:10:11,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:12,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:12,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-16 11:10:12,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:12,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-16 11:10:12,534 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:10:12,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:10:13,798 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 11:10:13,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-16 11:10:15,161 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-16 11:10:15,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-16 11:10:17,168 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:10:17,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 57 [2022-11-16 11:10:20,088 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:20,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:22,937 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:22,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:26,745 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:26,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:29,574 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:29,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:32,426 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:32,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:35,312 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:35,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:38,300 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:38,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:41,284 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:41,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:44,255 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:44,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:47,116 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:47,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:50,176 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:50,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:53,098 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-16 11:10:53,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-16 11:10:56,212 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:10:56,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:10:59,412 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-16 11:10:59,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-16 11:11:02,572 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:02,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:05,913 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:05,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:09,134 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:09,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:12,408 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:12,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:15,602 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:15,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:18,482 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-16 11:11:18,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-16 11:11:21,704 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-16 11:11:21,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-16 11:11:24,792 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:24,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:27,807 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:27,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:30,910 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:30,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:33,782 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:33,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:36,505 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-16 11:11:36,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-16 11:11:39,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:11:40,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2022-11-16 11:11:41,243 INFO L321 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2022-11-16 11:11:41,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 39 [2022-11-16 11:11:41,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 11:11:41,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 11:11:41,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:11:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2375 proven. 4783 refuted. 0 times theorem prover too weak. 13317 trivial. 0 not checked. [2022-11-16 11:11:42,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 5766 proven. 2560 refuted. 0 times theorem prover too weak. 12149 trivial. 0 not checked. [2022-11-16 11:12:05,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448488995] [2022-11-16 11:12:05,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:12:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230320375] [2022-11-16 11:12:05,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230320375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:05,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:12:05,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 16] total 54 [2022-11-16 11:12:05,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985215292] [2022-11-16 11:12:05,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:05,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-16 11:12:05,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:05,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-16 11:12:05,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=2345, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 11:12:05,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 217 [2022-11-16 11:12:05,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 432 transitions, 3558 flow. Second operand has 55 states, 55 states have (on average 134.1818181818182) internal successors, (7380), 55 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states 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 11:12:05,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:05,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 217 [2022-11-16 11:12:05,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:15,996 INFO L130 PetriNetUnfolder]: 349/5335 cut-off events. [2022-11-16 11:12:15,997 INFO L131 PetriNetUnfolder]: For 6755/6755 co-relation queries the response was YES. [2022-11-16 11:12:16,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11335 conditions, 5335 events. 349/5335 cut-off events. For 6755/6755 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12345 event pairs, 287 based on Foata normal form. 56/5163 useless extension candidates. Maximal degree in co-relation 6205. Up to 729 conditions per place. [2022-11-16 11:12:16,023 INFO L137 encePairwiseOnDemand]: 186/217 looper letters, 391 selfloop transitions, 250 changer transitions 0/762 dead transitions. [2022-11-16 11:12:16,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 762 transitions, 6201 flow [2022-11-16 11:12:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-16 11:12:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-11-16 11:12:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 8633 transitions. [2022-11-16 11:12:16,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6027789414886189 [2022-11-16 11:12:16,198 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 8633 transitions. [2022-11-16 11:12:16,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 8633 transitions. [2022-11-16 11:12:16,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:16,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 8633 transitions. [2022-11-16 11:12:16,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 130.8030303030303) internal successors, (8633), 66 states have internal predecessors, (8633), 0 states have call successors, (0), 0 states 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 11:12:16,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 217.0) internal successors, (14539), 67 states have internal predecessors, (14539), 0 states have call successors, (0), 0 states 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 11:12:16,292 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 217.0) internal successors, (14539), 67 states have internal predecessors, (14539), 0 states have call successors, (0), 0 states 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 11:12:16,292 INFO L175 Difference]: Start difference. First operand has 377 places, 432 transitions, 3558 flow. Second operand 66 states and 8633 transitions. [2022-11-16 11:12:16,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 762 transitions, 6201 flow [2022-11-16 11:12:16,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 762 transitions, 6165 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-16 11:12:16,454 INFO L231 Difference]: Finished difference. Result has 450 places, 551 transitions, 5223 flow [2022-11-16 11:12:16,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=5223, PETRI_PLACES=450, PETRI_TRANSITIONS=551} [2022-11-16 11:12:16,468 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 243 predicate places. [2022-11-16 11:12:16,468 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 551 transitions, 5223 flow [2022-11-16 11:12:16,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 134.1818181818182) internal successors, (7380), 55 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states 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 11:12:16,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:16,471 INFO L209 CegarLoopForPetriNet]: trace histogram [62, 62, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:16,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:16,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:12:16,671 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:12:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 415109579, now seen corresponding path program 2 times [2022-11-16 11:12:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:16,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527745628] [2022-11-16 11:12:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:17,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:12:17,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937493683] [2022-11-16 11:12:17,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:12:17,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:17,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:17,336 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:17,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:14:30,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:14:30,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:14:30,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 10400 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:14:30,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 75373 backedges. 39643 proven. 0 refuted. 0 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-16 11:14:34,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:14:34,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:34,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527745628] [2022-11-16 11:14:34,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:14:34,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937493683] [2022-11-16 11:14:34,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937493683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:34,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:34,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:14:34,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490208584] [2022-11-16 11:14:34,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:34,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:14:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:14:34,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:14:34,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 217 [2022-11-16 11:14:34,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 551 transitions, 5223 flow. Second operand has 11 states, 11 states have (on average 182.36363636363637) internal successors, (2006), 11 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states 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 11:14:34,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:34,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 217 [2022-11-16 11:14:34,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:38,733 INFO L130 PetriNetUnfolder]: 8/3920 cut-off events. [2022-11-16 11:14:38,734 INFO L131 PetriNetUnfolder]: For 9440/9440 co-relation queries the response was YES. [2022-11-16 11:14:38,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9329 conditions, 3920 events. 8/3920 cut-off events. For 9440/9440 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 286 event pairs, 0 based on Foata normal form. 1/3908 useless extension candidates. Maximal degree in co-relation 5991. Up to 307 conditions per place. [2022-11-16 11:14:38,748 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 252 selfloop transitions, 108 changer transitions 0/581 dead transitions. [2022-11-16 11:14:38,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 581 transitions, 6132 flow [2022-11-16 11:14:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:14:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:14:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2912 transitions. [2022-11-16 11:14:38,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2022-11-16 11:14:38,752 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2912 transitions. [2022-11-16 11:14:38,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2912 transitions. [2022-11-16 11:14:38,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:38,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2912 transitions. [2022-11-16 11:14:38,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 182.0) internal successors, (2912), 16 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 11:14:38,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states 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 11:14:38,762 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states 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 11:14:38,762 INFO L175 Difference]: Start difference. First operand has 450 places, 551 transitions, 5223 flow. Second operand 16 states and 2912 transitions. [2022-11-16 11:14:38,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 581 transitions, 6132 flow [2022-11-16 11:14:38,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 581 transitions, 5735 flow, removed 74 selfloop flow, removed 21 redundant places. [2022-11-16 11:14:38,870 INFO L231 Difference]: Finished difference. Result has 444 places, 552 transitions, 5105 flow [2022-11-16 11:14:38,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5105, PETRI_PLACES=444, PETRI_TRANSITIONS=552} [2022-11-16 11:14:38,871 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 237 predicate places. [2022-11-16 11:14:38,871 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 552 transitions, 5105 flow [2022-11-16 11:14:38,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 182.36363636363637) internal successors, (2006), 11 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states 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 11:14:38,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:38,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:39,078 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2022-11-16 11:14:39,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:14:39,119 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:14:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1047335675, now seen corresponding path program 2 times [2022-11-16 11:14:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:39,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699337907] [2022-11-16 11:14:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:39,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:39,459 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:14:39,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870821336] [2022-11-16 11:14:39,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:14:39,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:39,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:39,465 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:39,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:17:37,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:17:37,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:17:37,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 10566 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:17:37,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:17:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 5109 proven. 0 refuted. 0 times theorem prover too weak. 72708 trivial. 0 not checked. [2022-11-16 11:17:38,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:17:38,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:38,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699337907] [2022-11-16 11:17:38,031 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:17:38,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870821336] [2022-11-16 11:17:38,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870821336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:38,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:38,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:17:38,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836462517] [2022-11-16 11:17:38,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:38,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:17:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:17:38,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:17:38,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 217 [2022-11-16 11:17:38,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 552 transitions, 5105 flow. Second operand has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 11:17:38,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:38,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 217 [2022-11-16 11:17:38,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:17:42,643 INFO L130 PetriNetUnfolder]: 8/3892 cut-off events. [2022-11-16 11:17:42,643 INFO L131 PetriNetUnfolder]: For 8576/8576 co-relation queries the response was YES. [2022-11-16 11:17:42,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8981 conditions, 3892 events. 8/3892 cut-off events. For 8576/8576 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 28/3907 useless extension candidates. Maximal degree in co-relation 5849. Up to 423 conditions per place. [2022-11-16 11:17:42,673 INFO L137 encePairwiseOnDemand]: 208/217 looper letters, 39 selfloop transitions, 299 changer transitions 0/566 dead transitions. [2022-11-16 11:17:42,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 566 transitions, 5845 flow [2022-11-16 11:17:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:17:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:17:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2227 transitions. [2022-11-16 11:17:42,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8552227342549923 [2022-11-16 11:17:42,696 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2227 transitions. [2022-11-16 11:17:42,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2227 transitions. [2022-11-16 11:17:42,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:17:42,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2227 transitions. [2022-11-16 11:17:42,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.58333333333334) internal successors, (2227), 12 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states 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 11:17:42,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states 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 11:17:42,714 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states 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 11:17:42,714 INFO L175 Difference]: Start difference. First operand has 444 places, 552 transitions, 5105 flow. Second operand 12 states and 2227 transitions. [2022-11-16 11:17:42,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 566 transitions, 5845 flow [2022-11-16 11:17:42,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 566 transitions, 5728 flow, removed 3 selfloop flow, removed 12 redundant places. [2022-11-16 11:17:42,820 INFO L231 Difference]: Finished difference. Result has 444 places, 553 transitions, 5717 flow [2022-11-16 11:17:42,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4982, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5717, PETRI_PLACES=444, PETRI_TRANSITIONS=553} [2022-11-16 11:17:42,821 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 237 predicate places. [2022-11-16 11:17:42,821 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 553 transitions, 5717 flow [2022-11-16 11:17:42,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 11:17:42,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:42,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:43,043 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-16 11:17:43,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:17:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:17:43,063 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 11:17:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1032449126, now seen corresponding path program 3 times [2022-11-16 11:17:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:43,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100227016] [2022-11-16 11:17:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:43,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:17:43,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143595266] [2022-11-16 11:17:43,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:17:43,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:43,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:43,760 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:17:43,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:17:49,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:17:49,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:17:49,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:17:49,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:17:57,106 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 11:17:57,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:18:05,817 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 11:18:05,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:05,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100227016] [2022-11-16 11:18:05,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:18:05,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143595266] [2022-11-16 11:18:05,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143595266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:18:05,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:18:05,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:18:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918546359] [2022-11-16 11:18:05,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:18:05,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:18:05,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:05,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:18:05,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:18:05,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-16 11:18:05,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 553 transitions, 5717 flow. Second operand has 16 states, 16 states have (on average 191.875) internal successors, (3070), 16 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states 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 11:18:05,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:18:05,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-16 11:18:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:18:27,361 INFO L130 PetriNetUnfolder]: 12/8871 cut-off events. [2022-11-16 11:18:27,361 INFO L131 PetriNetUnfolder]: For 24298/24298 co-relation queries the response was YES. [2022-11-16 11:18:27,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20661 conditions, 8871 events. 12/8871 cut-off events. For 24298/24298 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 4/8862 useless extension candidates. Maximal degree in co-relation 17559. Up to 450 conditions per place. [2022-11-16 11:18:27,439 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 77 selfloop transitions, 21 changer transitions 0/618 dead transitions. [2022-11-16 11:18:27,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 618 transitions, 6253 flow [2022-11-16 11:18:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:18:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:18:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4021 transitions. [2022-11-16 11:18:27,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8823787579547948 [2022-11-16 11:18:27,449 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4021 transitions. [2022-11-16 11:18:27,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4021 transitions. [2022-11-16 11:18:27,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:18:27,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4021 transitions. [2022-11-16 11:18:27,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 191.47619047619048) internal successors, (4021), 21 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states 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 11:18:27,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states 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 11:18:27,467 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states 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 11:18:27,467 INFO L175 Difference]: Start difference. First operand has 444 places, 553 transitions, 5717 flow. Second operand 21 states and 4021 transitions. [2022-11-16 11:18:27,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 618 transitions, 6253 flow [2022-11-16 11:18:27,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 618 transitions, 5860 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-11-16 11:18:27,745 INFO L231 Difference]: Finished difference. Result has 461 places, 566 transitions, 5527 flow [2022-11-16 11:18:27,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=5328, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5527, PETRI_PLACES=461, PETRI_TRANSITIONS=566} [2022-11-16 11:18:27,747 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 254 predicate places. [2022-11-16 11:18:27,747 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 566 transitions, 5527 flow [2022-11-16 11:18:27,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 191.875) internal successors, (3070), 16 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states 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 11:18:27,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:18:27,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:18:27,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-16 11:18:27,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:18:27,971 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 11:18:27,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:27,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1448848162, now seen corresponding path program 4 times [2022-11-16 11:18:27,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:27,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32659058] [2022-11-16 11:18:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:29,206 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:18:29,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114013694] [2022-11-16 11:18:29,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:18:29,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:18:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:18:29,208 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:18:29,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:18:40,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:18:40,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:18:40,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 31930 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:18:40,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:18:57,794 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 11:18:57,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:19:16,245 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 11:19:16,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:16,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32659058] [2022-11-16 11:19:16,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:16,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114013694] [2022-11-16 11:19:16,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114013694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:19:16,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:19:16,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-16 11:19:16,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483541236] [2022-11-16 11:19:16,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:19:16,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:19:16,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:16,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:19:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:19:16,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-16 11:19:16,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 566 transitions, 5527 flow. Second operand has 21 states, 21 states have (on average 192.42857142857142) internal successors, (4041), 21 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states 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 11:19:16,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:16,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-16 11:19:16,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:56,123 INFO L130 PetriNetUnfolder]: 15/12612 cut-off events. [2022-11-16 11:19:56,123 INFO L131 PetriNetUnfolder]: For 32632/32632 co-relation queries the response was YES. [2022-11-16 11:19:56,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28965 conditions, 12612 events. 15/12612 cut-off events. For 32632/32632 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 245 event pairs, 0 based on Foata normal form. 3/12602 useless extension candidates. Maximal degree in co-relation 25928. Up to 720 conditions per place. [2022-11-16 11:19:56,185 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 107 selfloop transitions, 30 changer transitions 0/657 dead transitions. [2022-11-16 11:19:56,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 657 transitions, 6267 flow [2022-11-16 11:19:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:19:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:19:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5739 transitions. [2022-11-16 11:19:56,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8815668202764977 [2022-11-16 11:19:56,198 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5739 transitions. [2022-11-16 11:19:56,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5739 transitions. [2022-11-16 11:19:56,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:56,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5739 transitions. [2022-11-16 11:19:56,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 191.3) internal successors, (5739), 30 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states 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 11:19:56,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 217.0) internal successors, (6727), 31 states have internal predecessors, (6727), 0 states have call successors, (0), 0 states 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 11:19:56,216 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 217.0) internal successors, (6727), 31 states have internal predecessors, (6727), 0 states have call successors, (0), 0 states 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 11:19:56,217 INFO L175 Difference]: Start difference. First operand has 461 places, 566 transitions, 5527 flow. Second operand 30 states and 5739 transitions. [2022-11-16 11:19:56,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 657 transitions, 6267 flow [2022-11-16 11:19:56,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 657 transitions, 6255 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:19:56,459 INFO L231 Difference]: Finished difference. Result has 488 places, 576 transitions, 5726 flow [2022-11-16 11:19:56,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=5515, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5726, PETRI_PLACES=488, PETRI_TRANSITIONS=576} [2022-11-16 11:19:56,460 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 281 predicate places. [2022-11-16 11:19:56,460 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 576 transitions, 5726 flow [2022-11-16 11:19:56,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 192.42857142857142) internal successors, (4041), 21 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states 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 11:19:56,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:56,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:56,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-16 11:19:56,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:56,803 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 11:19:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1728833935, now seen corresponding path program 5 times [2022-11-16 11:19:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:56,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454396630] [2022-11-16 11:19:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:58,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:58,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834187333] [2022-11-16 11:19:58,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:19:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:58,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:58,364 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:58,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a2d94-4128-4446-bfc0-83de4ade1529/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process