./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:46:05,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:46:05,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:46:05,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:46:05,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:46:05,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:46:05,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:46:05,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:46:05,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:46:05,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:46:05,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:46:05,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:46:05,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:46:05,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:46:05,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:46:05,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:46:05,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:46:05,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:46:05,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:46:05,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:46:05,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:46:05,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:46:05,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:46:05,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:46:05,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:46:05,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:46:05,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:46:05,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:46:05,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:46:05,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:46:05,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:46:05,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:46:05,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:46:05,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:46:05,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:46:05,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:46:05,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:46:05,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:46:05,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:46:05,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:46:05,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:46:05,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:46:05,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:46:05,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:46:05,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:46:05,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:46:05,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:46:05,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:46:05,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:46:05,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:46:05,519 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:46:05,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:46:05,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:46:05,520 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:46:05,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:46:05,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:46:05,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:46:05,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:46:05,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:46:05,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:46:05,523 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:46:05,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:46:05,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:46:05,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:46:05,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:46:05,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:46:05,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:46:05,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:46:05,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:46:05,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:46:05,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:46:05,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:46:05,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:46:05,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:46:05,527 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:46:05,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:46:05,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:46:05,528 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_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-18 18:46:05,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:46:05,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:46:05,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:46:05,901 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:46:05,902 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:46:05,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-18 18:46:06,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/data/eb8f76de8/239cd7d1ed9744fd9ffaa6fda3748937/FLAG5e41ccbe6 [2022-11-18 18:46:06,662 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:46:06,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-18 18:46:06,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/data/eb8f76de8/239cd7d1ed9744fd9ffaa6fda3748937/FLAG5e41ccbe6 [2022-11-18 18:46:06,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/data/eb8f76de8/239cd7d1ed9744fd9ffaa6fda3748937 [2022-11-18 18:46:06,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:46:06,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:46:06,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:46:06,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:46:06,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:46:06,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:46:06" (1/1) ... [2022-11-18 18:46:06,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478c568f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:06, skipping insertion in model container [2022-11-18 18:46:06,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:46:06" (1/1) ... [2022-11-18 18:46:06,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:46:07,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:46:07,682 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:46:07,682 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:46:07,685 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:46:07,687 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:46:07,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:46:07,763 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:46:07,830 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:46:07,830 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:46:07,831 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:46:07,831 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:46:07,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:46:07,913 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:46:07,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07 WrapperNode [2022-11-18 18:46:07,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:46:07,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:46:07,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:46:07,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:46:07,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:07,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,011 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2022-11-18 18:46:08,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:46:08,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:46:08,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:46:08,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:46:08,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:46:08,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:46:08,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:46:08,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:46:08,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (1/1) ... [2022-11-18 18:46:08,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:46:08,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:08,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:46:08,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:46:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:46:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:46:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:46:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:46:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:46:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:46:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:46:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:46:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:46:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:46:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:46:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:46:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:46:08,161 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:46:08,359 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:46:08,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:46:08,797 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:46:08,807 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:46:08,808 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:46:08,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:46:08 BoogieIcfgContainer [2022-11-18 18:46:08,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:46:08,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:46:08,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:46:08,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:46:08,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:46:06" (1/3) ... [2022-11-18 18:46:08,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3f824b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:46:08, skipping insertion in model container [2022-11-18 18:46:08,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:46:07" (2/3) ... [2022-11-18 18:46:08,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3f824b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:46:08, skipping insertion in model container [2022-11-18 18:46:08,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:46:08" (3/3) ... [2022-11-18 18:46:08,824 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-18 18:46:08,837 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:46:08,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:46:08,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 18:46:08,852 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:46:09,022 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:46:09,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 203 transitions, 416 flow [2022-11-18 18:46:09,178 INFO L130 PetriNetUnfolder]: 14/201 cut-off events. [2022-11-18 18:46:09,178 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:46:09,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 14/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 503 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-18 18:46:09,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 203 transitions, 416 flow [2022-11-18 18:46:09,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 201 transitions, 408 flow [2022-11-18 18:46:09,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:46:09,214 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;@5c2292ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:46:09,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-18 18:46:09,230 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-11-18 18:46:09,230 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:46:09,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:09,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:09,232 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)] === [2022-11-18 18:46:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1502815099, now seen corresponding path program 1 times [2022-11-18 18:46:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:09,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82895431] [2022-11-18 18:46:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:09,474 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:09,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926624267] [2022-11-18 18:46:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:09,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:09,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:09,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:09,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:46:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:09,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:46:09,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:09,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:46:09,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:09,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82895431] [2022-11-18 18:46:09,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926624267] [2022-11-18 18:46:09,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926624267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:09,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:09,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:46:09,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512351140] [2022-11-18 18:46:09,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:09,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:46:09,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:09,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:46:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:46:09,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 203 [2022-11-18 18:46:09,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 201 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:09,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:09,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 203 [2022-11-18 18:46:09,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:10,117 INFO L130 PetriNetUnfolder]: 7/253 cut-off events. [2022-11-18 18:46:10,117 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:46:10,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 253 events. 7/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 749 event pairs, 0 based on Foata normal form. 8/234 useless extension candidates. Maximal degree in co-relation 221. Up to 17 conditions per place. [2022-11-18 18:46:10,126 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/202 dead transitions. [2022-11-18 18:46:10,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 202 transitions, 460 flow [2022-11-18 18:46:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:46:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:46:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-11-18 18:46:10,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9441707717569786 [2022-11-18 18:46:10,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-11-18 18:46:10,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-11-18 18:46:10,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:10,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-11-18 18:46:10,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,189 INFO L175 Difference]: Start difference. First operand has 194 places, 201 transitions, 408 flow. Second operand 3 states and 575 transitions. [2022-11-18 18:46:10,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 202 transitions, 460 flow [2022-11-18 18:46:10,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 202 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:46:10,208 INFO L231 Difference]: Finished difference. Result has 195 places, 194 transitions, 406 flow [2022-11-18 18:46:10,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=195, PETRI_TRANSITIONS=194} [2022-11-18 18:46:10,215 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 1 predicate places. [2022-11-18 18:46:10,216 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 194 transitions, 406 flow [2022-11-18 18:46:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:10,223 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:10,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:10,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:10,429 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)] === [2022-11-18 18:46:10,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash -657374059, now seen corresponding path program 1 times [2022-11-18 18:46:10,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:10,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836134094] [2022-11-18 18:46:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:10,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:10,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:10,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836134094] [2022-11-18 18:46:10,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836134094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:10,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:10,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:46:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886462843] [2022-11-18 18:46:10,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:10,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:46:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:46:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:46:10,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 203 [2022-11-18 18:46:10,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 194 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:10,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 203 [2022-11-18 18:46:10,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:10,733 INFO L130 PetriNetUnfolder]: 7/337 cut-off events. [2022-11-18 18:46:10,733 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:46:10,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 337 events. 7/337 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 717 event pairs, 0 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 246. Up to 22 conditions per place. [2022-11-18 18:46:10,740 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 17 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2022-11-18 18:46:10,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 200 transitions, 456 flow [2022-11-18 18:46:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:46:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:46:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-11-18 18:46:10,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9326765188834154 [2022-11-18 18:46:10,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-11-18 18:46:10,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-11-18 18:46:10,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:10,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-11-18 18:46:10,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,749 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 406 flow. Second operand 3 states and 568 transitions. [2022-11-18 18:46:10,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 200 transitions, 456 flow [2022-11-18 18:46:10,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 200 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:46:10,784 INFO L231 Difference]: Finished difference. Result has 197 places, 195 transitions, 420 flow [2022-11-18 18:46:10,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=197, PETRI_TRANSITIONS=195} [2022-11-18 18:46:10,785 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 3 predicate places. [2022-11-18 18:46:10,786 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 195 transitions, 420 flow [2022-11-18 18:46:10,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:10,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:10,787 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:10,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:46:10,788 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)] === [2022-11-18 18:46:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash -371900578, now seen corresponding path program 1 times [2022-11-18 18:46:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:10,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054144690] [2022-11-18 18:46:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:10,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:10,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712277973] [2022-11-18 18:46:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:10,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:10,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:10,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:10,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:46:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:11,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:46:11,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:11,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:46:11,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054144690] [2022-11-18 18:46:11,267 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712277973] [2022-11-18 18:46:11,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712277973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:11,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:11,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:46:11,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872068092] [2022-11-18 18:46:11,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:11,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:46:11,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:46:11,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:46:11,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-18 18:46:11,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 195 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:11,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:11,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-18 18:46:11,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:11,400 INFO L130 PetriNetUnfolder]: 7/337 cut-off events. [2022-11-18 18:46:11,400 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:46:11,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 337 events. 7/337 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 717 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 199. Up to 30 conditions per place. [2022-11-18 18:46:11,404 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 23 selfloop transitions, 5 changer transitions 0/204 dead transitions. [2022-11-18 18:46:11,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 204 transitions, 494 flow [2022-11-18 18:46:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:46:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:46:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-18 18:46:11,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9004926108374385 [2022-11-18 18:46:11,407 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-18 18:46:11,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-18 18:46:11,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:11,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-18 18:46:11,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:11,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:11,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:11,415 INFO L175 Difference]: Start difference. First operand has 197 places, 195 transitions, 420 flow. Second operand 5 states and 914 transitions. [2022-11-18 18:46:11,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 204 transitions, 494 flow [2022-11-18 18:46:11,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 204 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:46:11,422 INFO L231 Difference]: Finished difference. Result has 204 places, 198 transitions, 452 flow [2022-11-18 18:46:11,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=204, PETRI_TRANSITIONS=198} [2022-11-18 18:46:11,423 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 10 predicate places. [2022-11-18 18:46:11,423 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 198 transitions, 452 flow [2022-11-18 18:46:11,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:11,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:11,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:11,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:11,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:11,632 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)] === [2022-11-18 18:46:11,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1355984203, now seen corresponding path program 1 times [2022-11-18 18:46:11,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:11,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966340567] [2022-11-18 18:46:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:11,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:11,669 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:11,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131203427] [2022-11-18 18:46:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:11,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:11,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:11,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:11,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:46:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:11,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:46:11,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:11,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:46:11,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:11,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966340567] [2022-11-18 18:46:11,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:11,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131203427] [2022-11-18 18:46:11,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131203427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:11,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:11,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:46:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828367039] [2022-11-18 18:46:11,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:46:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:46:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:46:11,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-18 18:46:11,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 198 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:11,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:11,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-18 18:46:11,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:12,091 INFO L130 PetriNetUnfolder]: 7/333 cut-off events. [2022-11-18 18:46:12,092 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 18:46:12,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 333 events. 7/333 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 709 event pairs, 0 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 248. Up to 28 conditions per place. [2022-11-18 18:46:12,094 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 16 selfloop transitions, 5 changer transitions 0/197 dead transitions. [2022-11-18 18:46:12,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 197 transitions, 492 flow [2022-11-18 18:46:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:46:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:46:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 727 transitions. [2022-11-18 18:46:12,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.895320197044335 [2022-11-18 18:46:12,097 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 727 transitions. [2022-11-18 18:46:12,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 727 transitions. [2022-11-18 18:46:12,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:12,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 727 transitions. [2022-11-18 18:46:12,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:12,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:12,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:12,103 INFO L175 Difference]: Start difference. First operand has 204 places, 198 transitions, 452 flow. Second operand 4 states and 727 transitions. [2022-11-18 18:46:12,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 197 transitions, 492 flow [2022-11-18 18:46:12,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 197 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:46:12,109 INFO L231 Difference]: Finished difference. Result has 204 places, 197 transitions, 454 flow [2022-11-18 18:46:12,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=454, PETRI_PLACES=204, PETRI_TRANSITIONS=197} [2022-11-18 18:46:12,110 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 10 predicate places. [2022-11-18 18:46:12,110 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 197 transitions, 454 flow [2022-11-18 18:46:12,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:12,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:12,111 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:12,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:12,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:12,319 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)] === [2022-11-18 18:46:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash 682359355, now seen corresponding path program 1 times [2022-11-18 18:46:12,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:12,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914353236] [2022-11-18 18:46:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:12,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:12,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:12,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108368476] [2022-11-18 18:46:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:12,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:12,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:12,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:12,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:46:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:12,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:46:12,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:12,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:12,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:12,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914353236] [2022-11-18 18:46:12,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:12,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108368476] [2022-11-18 18:46:12,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108368476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:46:12,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:46:12,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:46:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084729149] [2022-11-18 18:46:12,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:12,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:46:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:46:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:46:12,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-18 18:46:12,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 197 transitions, 454 flow. Second operand has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:12,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:12,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-18 18:46:12,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:13,040 INFO L130 PetriNetUnfolder]: 7/419 cut-off events. [2022-11-18 18:46:13,040 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-18 18:46:13,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 419 events. 7/419 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 461 event pairs, 0 based on Foata normal form. 6/407 useless extension candidates. Maximal degree in co-relation 315. Up to 22 conditions per place. [2022-11-18 18:46:13,043 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 29 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2022-11-18 18:46:13,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 215 transitions, 586 flow [2022-11-18 18:46:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:46:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:46:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1634 transitions. [2022-11-18 18:46:13,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8943623426382047 [2022-11-18 18:46:13,048 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1634 transitions. [2022-11-18 18:46:13,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1634 transitions. [2022-11-18 18:46:13,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:13,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1634 transitions. [2022-11-18 18:46:13,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.55555555555554) internal successors, (1634), 9 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:13,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:13,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:13,061 INFO L175 Difference]: Start difference. First operand has 204 places, 197 transitions, 454 flow. Second operand 9 states and 1634 transitions. [2022-11-18 18:46:13,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 215 transitions, 586 flow [2022-11-18 18:46:13,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 215 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:46:13,068 INFO L231 Difference]: Finished difference. Result has 215 places, 201 transitions, 504 flow [2022-11-18 18:46:13,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=215, PETRI_TRANSITIONS=201} [2022-11-18 18:46:13,069 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 21 predicate places. [2022-11-18 18:46:13,070 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 201 transitions, 504 flow [2022-11-18 18:46:13,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:13,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:13,071 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:13,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 18:46:13,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:13,278 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)] === [2022-11-18 18:46:13,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:13,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1573270686, now seen corresponding path program 1 times [2022-11-18 18:46:13,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:13,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612885622] [2022-11-18 18:46:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:13,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:13,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:13,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725930530] [2022-11-18 18:46:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:13,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:13,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:13,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:13,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:46:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:13,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:46:13,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:13,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:14,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612885622] [2022-11-18 18:46:14,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:14,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725930530] [2022-11-18 18:46:14,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725930530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:46:14,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:46:14,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:46:14,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258851620] [2022-11-18 18:46:14,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:14,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:46:14,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:14,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:46:14,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:46:14,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-18 18:46:14,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 201 transitions, 504 flow. Second operand has 14 states, 14 states have (on average 180.64285714285714) internal successors, (2529), 14 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:14,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:14,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-18 18:46:14,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:14,647 INFO L130 PetriNetUnfolder]: 13/641 cut-off events. [2022-11-18 18:46:14,647 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-18 18:46:14,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 641 events. 13/641 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1265 event pairs, 0 based on Foata normal form. 4/609 useless extension candidates. Maximal degree in co-relation 535. Up to 19 conditions per place. [2022-11-18 18:46:14,651 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 37 selfloop transitions, 16 changer transitions 0/229 dead transitions. [2022-11-18 18:46:14,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 229 transitions, 718 flow [2022-11-18 18:46:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:46:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:46:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2710 transitions. [2022-11-18 18:46:14,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8899835796387521 [2022-11-18 18:46:14,659 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2710 transitions. [2022-11-18 18:46:14,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2710 transitions. [2022-11-18 18:46:14,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:14,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2710 transitions. [2022-11-18 18:46:14,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 180.66666666666666) internal successors, (2710), 15 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:14,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:14,675 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:14,675 INFO L175 Difference]: Start difference. First operand has 215 places, 201 transitions, 504 flow. Second operand 15 states and 2710 transitions. [2022-11-18 18:46:14,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 229 transitions, 718 flow [2022-11-18 18:46:14,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 700 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:46:14,685 INFO L231 Difference]: Finished difference. Result has 224 places, 205 transitions, 553 flow [2022-11-18 18:46:14,686 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=553, PETRI_PLACES=224, PETRI_TRANSITIONS=205} [2022-11-18 18:46:14,689 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 30 predicate places. [2022-11-18 18:46:14,690 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 205 transitions, 553 flow [2022-11-18 18:46:14,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 180.64285714285714) internal successors, (2529), 14 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:14,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:14,692 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:14,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:14,900 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)] === [2022-11-18 18:46:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2027945851, now seen corresponding path program 2 times [2022-11-18 18:46:14,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:14,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221098130] [2022-11-18 18:46:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:14,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:14,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:14,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353170970] [2022-11-18 18:46:14,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:46:14,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:14,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:14,959 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:14,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:46:15,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:46:15,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:46:15,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:46:15,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 18:46:15,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:46:15,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221098130] [2022-11-18 18:46:15,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353170970] [2022-11-18 18:46:15,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353170970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:15,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:15,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:46:15,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276375235] [2022-11-18 18:46:15,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:15,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:46:15,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:15,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:46:15,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:46:15,425 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-18 18:46:15,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 205 transitions, 553 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:15,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:15,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-18 18:46:15,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:15,598 INFO L130 PetriNetUnfolder]: 13/641 cut-off events. [2022-11-18 18:46:15,598 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-18 18:46:15,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 641 events. 13/641 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1261 event pairs, 0 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 557. Up to 50 conditions per place. [2022-11-18 18:46:15,602 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 29 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-11-18 18:46:15,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 217 transitions, 645 flow [2022-11-18 18:46:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:46:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:46:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 905 transitions. [2022-11-18 18:46:15,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8916256157635468 [2022-11-18 18:46:15,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 905 transitions. [2022-11-18 18:46:15,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 905 transitions. [2022-11-18 18:46:15,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:15,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 905 transitions. [2022-11-18 18:46:15,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:15,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:15,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:15,610 INFO L175 Difference]: Start difference. First operand has 224 places, 205 transitions, 553 flow. Second operand 5 states and 905 transitions. [2022-11-18 18:46:15,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 217 transitions, 645 flow [2022-11-18 18:46:15,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 217 transitions, 586 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-18 18:46:15,616 INFO L231 Difference]: Finished difference. Result has 219 places, 208 transitions, 528 flow [2022-11-18 18:46:15,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=528, PETRI_PLACES=219, PETRI_TRANSITIONS=208} [2022-11-18 18:46:15,617 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 25 predicate places. [2022-11-18 18:46:15,617 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 208 transitions, 528 flow [2022-11-18 18:46:15,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:15,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:15,618 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:15,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 18:46:15,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:46:15,823 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)] === [2022-11-18 18:46:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1558187717, now seen corresponding path program 1 times [2022-11-18 18:46:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:15,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495799197] [2022-11-18 18:46:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:15,865 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:15,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266442095] [2022-11-18 18:46:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:15,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:15,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:15,867 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:15,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:46:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:16,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:46:16,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:16,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:16,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495799197] [2022-11-18 18:46:16,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:16,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266442095] [2022-11-18 18:46:16,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266442095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:46:16,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:46:16,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:46:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368402991] [2022-11-18 18:46:16,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:46:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:46:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:46:16,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-18 18:46:16,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 208 transitions, 528 flow. Second operand has 16 states, 16 states have (on average 180.6875) internal successors, (2891), 16 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:16,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:16,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-18 18:46:16,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:17,136 INFO L130 PetriNetUnfolder]: 7/753 cut-off events. [2022-11-18 18:46:17,136 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-18 18:46:17,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 753 events. 7/753 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 482 event pairs, 0 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 602. Up to 20 conditions per place. [2022-11-18 18:46:17,139 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 60 selfloop transitions, 22 changer transitions 0/261 dead transitions. [2022-11-18 18:46:17,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 261 transitions, 885 flow [2022-11-18 18:46:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:46:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:46:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3802 transitions. [2022-11-18 18:46:17,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8918601923528032 [2022-11-18 18:46:17,147 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3802 transitions. [2022-11-18 18:46:17,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3802 transitions. [2022-11-18 18:46:17,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:17,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3802 transitions. [2022-11-18 18:46:17,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 181.04761904761904) internal successors, (3802), 21 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:17,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:17,167 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:17,168 INFO L175 Difference]: Start difference. First operand has 219 places, 208 transitions, 528 flow. Second operand 21 states and 3802 transitions. [2022-11-18 18:46:17,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 261 transitions, 885 flow [2022-11-18 18:46:17,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 261 transitions, 875 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 18:46:17,174 INFO L231 Difference]: Finished difference. Result has 243 places, 217 transitions, 638 flow [2022-11-18 18:46:17,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=638, PETRI_PLACES=243, PETRI_TRANSITIONS=217} [2022-11-18 18:46:17,175 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 49 predicate places. [2022-11-18 18:46:17,175 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 217 transitions, 638 flow [2022-11-18 18:46:17,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 180.6875) internal successors, (2891), 16 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:17,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:17,177 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:17,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 18:46:17,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:17,384 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)] === [2022-11-18 18:46:17,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash -701389125, now seen corresponding path program 2 times [2022-11-18 18:46:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:17,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023744191] [2022-11-18 18:46:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:17,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:17,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310817876] [2022-11-18 18:46:17,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:46:17,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:17,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:17,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:17,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:46:17,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:46:17,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:46:17,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:46:17,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-18 18:46:18,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:46:18,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:18,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023744191] [2022-11-18 18:46:18,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:18,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310817876] [2022-11-18 18:46:18,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310817876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:18,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:18,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:46:18,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188886193] [2022-11-18 18:46:18,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:18,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:46:18,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:46:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:46:18,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-18 18:46:18,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 217 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:18,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:18,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-18 18:46:18,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:18,380 INFO L130 PetriNetUnfolder]: 7/751 cut-off events. [2022-11-18 18:46:18,381 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-18 18:46:18,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 751 events. 7/751 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 480 event pairs, 0 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 603. Up to 80 conditions per place. [2022-11-18 18:46:18,384 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 18 selfloop transitions, 5 changer transitions 0/215 dead transitions. [2022-11-18 18:46:18,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 215 transitions, 674 flow [2022-11-18 18:46:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:46:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:46:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 717 transitions. [2022-11-18 18:46:18,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830049261083743 [2022-11-18 18:46:18,387 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 717 transitions. [2022-11-18 18:46:18,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 717 transitions. [2022-11-18 18:46:18,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:18,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 717 transitions. [2022-11-18 18:46:18,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:18,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:18,392 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:18,392 INFO L175 Difference]: Start difference. First operand has 243 places, 217 transitions, 638 flow. Second operand 4 states and 717 transitions. [2022-11-18 18:46:18,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 215 transitions, 674 flow [2022-11-18 18:46:18,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 215 transitions, 651 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 18:46:18,398 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 615 flow [2022-11-18 18:46:18,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=615, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-11-18 18:46:18,400 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 40 predicate places. [2022-11-18 18:46:18,400 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 615 flow [2022-11-18 18:46:18,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:18,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:18,401 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:18,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:18,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:18,608 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:46:18,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1660508075, now seen corresponding path program 1 times [2022-11-18 18:46:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:18,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569322959] [2022-11-18 18:46:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:18,684 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:18,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817690358] [2022-11-18 18:46:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:18,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:18,686 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:18,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:46:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:19,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:46:19,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:19,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:20,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:20,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569322959] [2022-11-18 18:46:20,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:20,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817690358] [2022-11-18 18:46:20,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817690358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:46:20,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:46:20,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 18:46:20,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115069011] [2022-11-18 18:46:20,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:20,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:46:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:46:20,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:46:20,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-18 18:46:20,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 615 flow. Second operand has 32 states, 32 states have (on average 181.125) internal successors, (5796), 32 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:20,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:20,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-18 18:46:20,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:22,445 INFO L130 PetriNetUnfolder]: 7/1423 cut-off events. [2022-11-18 18:46:22,445 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-18 18:46:22,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1423 events. 7/1423 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 519 event pairs, 0 based on Foata normal form. 16/1425 useless extension candidates. Maximal degree in co-relation 1192. Up to 38 conditions per place. [2022-11-18 18:46:22,452 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 124 selfloop transitions, 46 changer transitions 0/347 dead transitions. [2022-11-18 18:46:22,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 347 transitions, 1551 flow [2022-11-18 18:46:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:46:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 18:46:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8142 transitions. [2022-11-18 18:46:22,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8912972085385878 [2022-11-18 18:46:22,471 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8142 transitions. [2022-11-18 18:46:22,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8142 transitions. [2022-11-18 18:46:22,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:22,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8142 transitions. [2022-11-18 18:46:22,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 180.93333333333334) internal successors, (8142), 45 states have internal predecessors, (8142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:22,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 203.0) internal successors, (9338), 46 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:22,610 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 203.0) internal successors, (9338), 46 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:22,610 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 615 flow. Second operand 45 states and 8142 transitions. [2022-11-18 18:46:22,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 347 transitions, 1551 flow [2022-11-18 18:46:22,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 347 transitions, 1541 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:46:22,621 INFO L231 Difference]: Finished difference. Result has 284 places, 240 transitions, 928 flow [2022-11-18 18:46:22,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=928, PETRI_PLACES=284, PETRI_TRANSITIONS=240} [2022-11-18 18:46:22,624 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 90 predicate places. [2022-11-18 18:46:22,624 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 240 transitions, 928 flow [2022-11-18 18:46:22,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 181.125) internal successors, (5796), 32 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:22,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:22,627 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:22,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:22,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:22,838 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:46:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:22,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2076259157, now seen corresponding path program 2 times [2022-11-18 18:46:22,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:22,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254239503] [2022-11-18 18:46:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:22,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:23,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:23,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398924250] [2022-11-18 18:46:23,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:46:23,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:23,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:23,026 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:23,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:46:23,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:46:23,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:46:23,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:46:23,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-18 18:46:23,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:46:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:23,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254239503] [2022-11-18 18:46:23,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:23,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398924250] [2022-11-18 18:46:23,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398924250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:23,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:23,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:46:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271586439] [2022-11-18 18:46:23,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:23,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:46:23,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:23,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:46:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:46:23,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-18 18:46:23,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 240 transitions, 928 flow. Second operand has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:23,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:23,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-18 18:46:23,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:24,358 INFO L130 PetriNetUnfolder]: 23/1479 cut-off events. [2022-11-18 18:46:24,358 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-11-18 18:46:24,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2156 conditions, 1479 events. 23/1479 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 980 event pairs, 3 based on Foata normal form. 0/1459 useless extension candidates. Maximal degree in co-relation 1885. Up to 38 conditions per place. [2022-11-18 18:46:24,367 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 16 selfloop transitions, 4 changer transitions 0/242 dead transitions. [2022-11-18 18:46:24,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 242 transitions, 978 flow [2022-11-18 18:46:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:46:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:46:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 906 transitions. [2022-11-18 18:46:24,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8926108374384236 [2022-11-18 18:46:24,371 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 906 transitions. [2022-11-18 18:46:24,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 906 transitions. [2022-11-18 18:46:24,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:24,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 906 transitions. [2022-11-18 18:46:24,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:24,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:24,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:24,378 INFO L175 Difference]: Start difference. First operand has 284 places, 240 transitions, 928 flow. Second operand 5 states and 906 transitions. [2022-11-18 18:46:24,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 242 transitions, 978 flow [2022-11-18 18:46:24,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 242 transitions, 921 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 18:46:24,395 INFO L231 Difference]: Finished difference. Result has 269 places, 239 transitions, 877 flow [2022-11-18 18:46:24,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=877, PETRI_PLACES=269, PETRI_TRANSITIONS=239} [2022-11-18 18:46:24,396 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 75 predicate places. [2022-11-18 18:46:24,397 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 239 transitions, 877 flow [2022-11-18 18:46:24,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:24,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:24,398 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:24,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:24,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:24,605 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:46:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:24,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2076228372, now seen corresponding path program 1 times [2022-11-18 18:46:24,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:24,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565783485] [2022-11-18 18:46:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:24,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:24,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:24,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155400302] [2022-11-18 18:46:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:24,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:24,794 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:24,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:46:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:25,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:46:25,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:27,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:29,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:29,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565783485] [2022-11-18 18:46:29,805 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:29,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155400302] [2022-11-18 18:46:29,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155400302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:46:29,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:46:29,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 18:46:29,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346881155] [2022-11-18 18:46:29,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:29,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 18:46:29,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 18:46:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:46:29,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-18 18:46:29,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 239 transitions, 877 flow. Second operand has 61 states, 61 states have (on average 181.37704918032787) internal successors, (11064), 61 states have internal predecessors, (11064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:29,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:29,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-18 18:46:29,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:34,567 INFO L130 PetriNetUnfolder]: 7/2682 cut-off events. [2022-11-18 18:46:34,568 INFO L131 PetriNetUnfolder]: For 4943/4943 co-relation queries the response was YES. [2022-11-18 18:46:34,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 2682 events. 7/2682 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 584 event pairs, 0 based on Foata normal form. 30/2700 useless extension candidates. Maximal degree in co-relation 4381. Up to 96 conditions per place. [2022-11-18 18:46:34,581 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 244 selfloop transitions, 91 changer transitions 0/511 dead transitions. [2022-11-18 18:46:34,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 511 transitions, 2959 flow [2022-11-18 18:46:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 18:46:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 18:46:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 16279 transitions. [2022-11-18 18:46:34,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891023535851122 [2022-11-18 18:46:34,613 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 16279 transitions. [2022-11-18 18:46:34,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 16279 transitions. [2022-11-18 18:46:34,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:34,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 16279 transitions. [2022-11-18 18:46:34,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 180.87777777777777) internal successors, (16279), 90 states have internal predecessors, (16279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:34,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 203.0) internal successors, (18473), 91 states have internal predecessors, (18473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:34,693 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 203.0) internal successors, (18473), 91 states have internal predecessors, (18473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:34,693 INFO L175 Difference]: Start difference. First operand has 269 places, 239 transitions, 877 flow. Second operand 90 states and 16279 transitions. [2022-11-18 18:46:34,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 511 transitions, 2959 flow [2022-11-18 18:46:34,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 511 transitions, 2951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:46:34,716 INFO L231 Difference]: Finished difference. Result has 370 places, 285 transitions, 1558 flow [2022-11-18 18:46:34,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1558, PETRI_PLACES=370, PETRI_TRANSITIONS=285} [2022-11-18 18:46:34,718 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 176 predicate places. [2022-11-18 18:46:34,719 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 285 transitions, 1558 flow [2022-11-18 18:46:34,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 181.37704918032787) internal successors, (11064), 61 states have internal predecessors, (11064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:34,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:34,724 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:34,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:34,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:34,937 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:46:34,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:34,937 INFO L85 PathProgramCache]: Analyzing trace with hash 567278534, now seen corresponding path program 2 times [2022-11-18 18:46:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:34,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348961019] [2022-11-18 18:46:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:34,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:35,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:35,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593628798] [2022-11-18 18:46:35,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:46:35,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:35,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:35,169 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:35,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:46:36,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:46:36,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:46:36,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 5188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:46:37,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:46:39,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:46:41,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:41,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348961019] [2022-11-18 18:46:41,542 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:41,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593628798] [2022-11-18 18:46:41,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593628798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:46:41,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:46:41,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:46:41,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052618061] [2022-11-18 18:46:41,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:41,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:46:41,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:41,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:46:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:46:41,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-18 18:46:41,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 285 transitions, 1558 flow. Second operand has 8 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:41,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:41,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-18 18:46:41,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:45,526 INFO L130 PetriNetUnfolder]: 8/3988 cut-off events. [2022-11-18 18:46:45,527 INFO L131 PetriNetUnfolder]: For 4582/4582 co-relation queries the response was YES. [2022-11-18 18:46:45,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 3988 events. 8/3988 cut-off events. For 4582/4582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 530 event pairs, 0 based on Foata normal form. 3/3978 useless extension candidates. Maximal degree in co-relation 4615. Up to 187 conditions per place. [2022-11-18 18:46:45,537 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 38 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2022-11-18 18:46:45,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 309 transitions, 1714 flow [2022-11-18 18:46:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:46:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:46:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1616 transitions. [2022-11-18 18:46:45,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845101258894362 [2022-11-18 18:46:45,541 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1616 transitions. [2022-11-18 18:46:45,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1616 transitions. [2022-11-18 18:46:45,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:45,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1616 transitions. [2022-11-18 18:46:45,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.55555555555554) internal successors, (1616), 9 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:45,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:45,551 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:45,551 INFO L175 Difference]: Start difference. First operand has 370 places, 285 transitions, 1558 flow. Second operand 9 states and 1616 transitions. [2022-11-18 18:46:45,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 309 transitions, 1714 flow [2022-11-18 18:46:45,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 309 transitions, 1595 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:46:45,592 INFO L231 Difference]: Finished difference. Result has 341 places, 289 transitions, 1495 flow [2022-11-18 18:46:45,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1495, PETRI_PLACES=341, PETRI_TRANSITIONS=289} [2022-11-18 18:46:45,594 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 147 predicate places. [2022-11-18 18:46:45,594 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 289 transitions, 1495 flow [2022-11-18 18:46:45,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:45,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:45,596 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:45,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:46:45,815 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)] === [2022-11-18 18:46:45,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash -376950072, now seen corresponding path program 1 times [2022-11-18 18:46:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:45,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450084574] [2022-11-18 18:46:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:45,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:46,058 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:46,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222150765] [2022-11-18 18:46:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:46,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:46,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:46,060 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:46,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:46:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:53,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 5325 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:46:53,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:46:56,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:46:59,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:59,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450084574] [2022-11-18 18:46:59,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:59,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222150765] [2022-11-18 18:46:59,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222150765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:46:59,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:46:59,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:46:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944514733] [2022-11-18 18:46:59,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:59,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:46:59,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:46:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:46:59,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2022-11-18 18:46:59,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 289 transitions, 1495 flow. Second operand has 14 states, 14 states have (on average 169.35714285714286) internal successors, (2371), 14 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:46:59,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:59,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2022-11-18 18:46:59,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:03,200 INFO L130 PetriNetUnfolder]: 8/3956 cut-off events. [2022-11-18 18:47:03,200 INFO L131 PetriNetUnfolder]: For 4795/4795 co-relation queries the response was YES. [2022-11-18 18:47:03,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6961 conditions, 3956 events. 8/3956 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 32/3975 useless extension candidates. Maximal degree in co-relation 4756. Up to 307 conditions per place. [2022-11-18 18:47:03,211 INFO L137 encePairwiseOnDemand]: 189/203 looper letters, 224 selfloop transitions, 144 changer transitions 0/529 dead transitions. [2022-11-18 18:47:03,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 529 transitions, 4355 flow [2022-11-18 18:47:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:47:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:47:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4039 transitions. [2022-11-18 18:47:03,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290229885057471 [2022-11-18 18:47:03,221 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4039 transitions. [2022-11-18 18:47:03,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4039 transitions. [2022-11-18 18:47:03,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:03,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4039 transitions. [2022-11-18 18:47:03,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 168.29166666666666) internal successors, (4039), 24 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:03,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 203.0) internal successors, (5075), 25 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:03,247 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 203.0) internal successors, (5075), 25 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:03,247 INFO L175 Difference]: Start difference. First operand has 341 places, 289 transitions, 1495 flow. Second operand 24 states and 4039 transitions. [2022-11-18 18:47:03,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 529 transitions, 4355 flow [2022-11-18 18:47:03,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 529 transitions, 4339 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:47:03,303 INFO L231 Difference]: Finished difference. Result has 365 places, 420 transitions, 3534 flow [2022-11-18 18:47:03,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3534, PETRI_PLACES=365, PETRI_TRANSITIONS=420} [2022-11-18 18:47:03,305 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 171 predicate places. [2022-11-18 18:47:03,305 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 420 transitions, 3534 flow [2022-11-18 18:47:03,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 169.35714285714286) internal successors, (2371), 14 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:03,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:03,308 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:03,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:47:03,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:47:03,534 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)] === [2022-11-18 18:47:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1064525364, now seen corresponding path program 1 times [2022-11-18 18:47:03,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:03,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039096843] [2022-11-18 18:47:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:03,829 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:47:03,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456921777] [2022-11-18 18:47:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:03,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:03,831 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:03,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:47:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:12,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:47:12,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:47:15,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:47:15,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:15,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039096843] [2022-11-18 18:47:15,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:47:15,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456921777] [2022-11-18 18:47:15,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456921777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:15,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:15,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:47:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474232457] [2022-11-18 18:47:15,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:15,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:47:15,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:15,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:47:15,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:47:15,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2022-11-18 18:47:15,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 420 transitions, 3534 flow. Second operand has 11 states, 11 states have (on average 168.45454545454547) internal successors, (1853), 11 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:15,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:15,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2022-11-18 18:47:15,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:19,377 INFO L130 PetriNetUnfolder]: 8/3899 cut-off events. [2022-11-18 18:47:19,378 INFO L131 PetriNetUnfolder]: For 7134/7134 co-relation queries the response was YES. [2022-11-18 18:47:19,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 3899 events. 8/3899 cut-off events. For 7134/7134 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 296 event pairs, 0 based on Foata normal form. 57/3943 useless extension candidates. Maximal degree in co-relation 4931. Up to 370 conditions per place. [2022-11-18 18:47:19,392 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 208 selfloop transitions, 139 changer transitions 0/508 dead transitions. [2022-11-18 18:47:19,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 508 transitions, 5010 flow [2022-11-18 18:47:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:47:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:47:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2526 transitions. [2022-11-18 18:47:19,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8295566502463054 [2022-11-18 18:47:19,396 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2526 transitions. [2022-11-18 18:47:19,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2526 transitions. [2022-11-18 18:47:19,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:19,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2526 transitions. [2022-11-18 18:47:19,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 168.4) internal successors, (2526), 15 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,407 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,408 INFO L175 Difference]: Start difference. First operand has 365 places, 420 transitions, 3534 flow. Second operand 15 states and 2526 transitions. [2022-11-18 18:47:19,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 508 transitions, 5010 flow [2022-11-18 18:47:19,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 508 transitions, 4978 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-18 18:47:19,482 INFO L231 Difference]: Finished difference. Result has 372 places, 477 transitions, 4713 flow [2022-11-18 18:47:19,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3483, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4713, PETRI_PLACES=372, PETRI_TRANSITIONS=477} [2022-11-18 18:47:19,484 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 178 predicate places. [2022-11-18 18:47:19,484 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 477 transitions, 4713 flow [2022-11-18 18:47:19,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 168.45454545454547) internal successors, (1853), 11 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:19,486 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:19,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:47:19,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:47:19,714 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:47:19,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -122160299, now seen corresponding path program 2 times [2022-11-18 18:47:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:19,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316950242] [2022-11-18 18:47:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:19,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:20,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:47:20,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889253594] [2022-11-18 18:47:20,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:47:20,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:20,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:20,158 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:20,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:48:22,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:48:22,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:48:22,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 10552 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:48:22,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 42044 proven. 0 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-18 18:48:27,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:27,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316950242] [2022-11-18 18:48:27,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:27,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889253594] [2022-11-18 18:48:27,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889253594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:27,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:27,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:48:27,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139272861] [2022-11-18 18:48:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:27,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:48:27,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:27,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:48:27,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:48:27,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 203 [2022-11-18 18:48:27,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 477 transitions, 4713 flow. Second operand has 9 states, 9 states have (on average 174.44444444444446) internal successors, (1570), 9 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:27,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:27,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 203 [2022-11-18 18:48:27,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:31,137 INFO L130 PetriNetUnfolder]: 8/3871 cut-off events. [2022-11-18 18:48:31,139 INFO L131 PetriNetUnfolder]: For 9582/9582 co-relation queries the response was YES. [2022-11-18 18:48:31,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 3871 events. 8/3871 cut-off events. For 9582/9582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 28/3886 useless extension candidates. Maximal degree in co-relation 4817. Up to 217 conditions per place. [2022-11-18 18:48:31,157 INFO L137 encePairwiseOnDemand]: 194/203 looper letters, 200 selfloop transitions, 49 changer transitions 0/502 dead transitions. [2022-11-18 18:48:31,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 502 transitions, 5456 flow [2022-11-18 18:48:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:48:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:48:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2085 transitions. [2022-11-18 18:48:31,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8559113300492611 [2022-11-18 18:48:31,164 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2085 transitions. [2022-11-18 18:48:31,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2085 transitions. [2022-11-18 18:48:31,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:31,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2085 transitions. [2022-11-18 18:48:31,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 173.75) internal successors, (2085), 12 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:31,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:31,173 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:31,174 INFO L175 Difference]: Start difference. First operand has 372 places, 477 transitions, 4713 flow. Second operand 12 states and 2085 transitions. [2022-11-18 18:48:31,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 502 transitions, 5456 flow [2022-11-18 18:48:31,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 502 transitions, 5280 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-18 18:48:31,239 INFO L231 Difference]: Finished difference. Result has 374 places, 482 transitions, 4760 flow [2022-11-18 18:48:31,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4525, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4760, PETRI_PLACES=374, PETRI_TRANSITIONS=482} [2022-11-18 18:48:31,240 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 180 predicate places. [2022-11-18 18:48:31,240 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 482 transitions, 4760 flow [2022-11-18 18:48:31,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.44444444444446) internal successors, (1570), 9 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:31,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:31,242 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:31,472 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2022-11-18 18:48:31,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:31,532 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:48:31,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:31,534 INFO L85 PathProgramCache]: Analyzing trace with hash -754395284, now seen corresponding path program 3 times [2022-11-18 18:48:31,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:31,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927099028] [2022-11-18 18:48:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:31,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:32,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:32,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35463423] [2022-11-18 18:48:32,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:48:32,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:32,031 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:32,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:48:38,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 18:48:38,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:48:38,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:48:38,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 18:48:45,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 18:48:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:53,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927099028] [2022-11-18 18:48:53,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:53,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35463423] [2022-11-18 18:48:53,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35463423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:53,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:48:53,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:48:53,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381957618] [2022-11-18 18:48:53,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:48:53,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:48:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:48:53,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-18 18:48:53,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 482 transitions, 4760 flow. Second operand has 16 states, 16 states have (on average 178.875) internal successors, (2862), 16 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:53,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:53,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-18 18:48:53,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:10,258 INFO L130 PetriNetUnfolder]: 12/8859 cut-off events. [2022-11-18 18:49:10,258 INFO L131 PetriNetUnfolder]: For 21629/21629 co-relation queries the response was YES. [2022-11-18 18:49:10,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16471 conditions, 8859 events. 12/8859 cut-off events. For 21629/21629 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 244 event pairs, 0 based on Foata normal form. 4/8850 useless extension candidates. Maximal degree in co-relation 14137. Up to 336 conditions per place. [2022-11-18 18:49:10,279 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 74 selfloop transitions, 21 changer transitions 0/550 dead transitions. [2022-11-18 18:49:10,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 550 transitions, 5250 flow [2022-11-18 18:49:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:49:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:49:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3748 transitions. [2022-11-18 18:49:10,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879193056532958 [2022-11-18 18:49:10,300 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3748 transitions. [2022-11-18 18:49:10,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3748 transitions. [2022-11-18 18:49:10,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:10,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3748 transitions. [2022-11-18 18:49:10,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 178.47619047619048) internal successors, (3748), 21 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:10,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:10,315 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:10,316 INFO L175 Difference]: Start difference. First operand has 374 places, 482 transitions, 4760 flow. Second operand 21 states and 3748 transitions. [2022-11-18 18:49:10,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 550 transitions, 5250 flow [2022-11-18 18:49:10,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 550 transitions, 5193 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-18 18:49:10,430 INFO L231 Difference]: Finished difference. Result has 390 places, 495 transitions, 4901 flow [2022-11-18 18:49:10,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4727, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4901, PETRI_PLACES=390, PETRI_TRANSITIONS=495} [2022-11-18 18:49:10,431 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 196 predicate places. [2022-11-18 18:49:10,431 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 495 transitions, 4901 flow [2022-11-18 18:49:10,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 178.875) internal successors, (2862), 16 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:10,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:10,435 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:10,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:10,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:49:10,650 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:49:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1575393352, now seen corresponding path program 4 times [2022-11-18 18:49:10,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:10,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485407797] [2022-11-18 18:49:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:10,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:11,907 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:11,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382873733] [2022-11-18 18:49:11,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:49:11,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:11,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:11,913 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:11,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:49:21,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:49:21,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:22,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 31914 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:49:22,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-18 18:49:37,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-18 18:49:56,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:56,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485407797] [2022-11-18 18:49:56,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:56,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382873733] [2022-11-18 18:49:56,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382873733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:56,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:56,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-18 18:49:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515099778] [2022-11-18 18:49:56,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:56,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 18:49:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:56,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 18:49:56,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:49:56,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-18 18:49:56,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 495 transitions, 4901 flow. Second operand has 21 states, 21 states have (on average 179.42857142857142) internal successors, (3768), 21 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:56,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:56,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-18 18:49:56,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:27,943 INFO L130 PetriNetUnfolder]: 15/12600 cut-off events. [2022-11-18 18:50:27,943 INFO L131 PetriNetUnfolder]: For 30280/30280 co-relation queries the response was YES. [2022-11-18 18:50:27,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23339 conditions, 12600 events. 15/12600 cut-off events. For 30280/30280 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 247 event pairs, 0 based on Foata normal form. 3/12590 useless extension candidates. Maximal degree in co-relation 20996. Up to 480 conditions per place. [2022-11-18 18:50:27,975 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 104 selfloop transitions, 30 changer transitions 0/589 dead transitions. [2022-11-18 18:50:27,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 589 transitions, 5561 flow [2022-11-18 18:50:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:50:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:50:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5349 transitions. [2022-11-18 18:50:27,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783251231527094 [2022-11-18 18:50:27,983 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5349 transitions. [2022-11-18 18:50:27,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5349 transitions. [2022-11-18 18:50:27,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:27,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5349 transitions. [2022-11-18 18:50:27,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 178.3) internal successors, (5349), 30 states have internal predecessors, (5349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:28,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:28,003 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:28,004 INFO L175 Difference]: Start difference. First operand has 390 places, 495 transitions, 4901 flow. Second operand 30 states and 5349 transitions. [2022-11-18 18:50:28,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 589 transitions, 5561 flow [2022-11-18 18:50:28,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 589 transitions, 5531 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-18 18:50:28,141 INFO L231 Difference]: Finished difference. Result has 416 places, 505 transitions, 5064 flow [2022-11-18 18:50:28,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5064, PETRI_PLACES=416, PETRI_TRANSITIONS=505} [2022-11-18 18:50:28,142 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 222 predicate places. [2022-11-18 18:50:28,142 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 505 transitions, 5064 flow [2022-11-18 18:50:28,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 179.42857142857142) internal successors, (3768), 21 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:28,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:28,147 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:28,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:28,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:50:28,362 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:50:28,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1595849169, now seen corresponding path program 5 times [2022-11-18 18:50:28,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:28,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698271901] [2022-11-18 18:50:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:28,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:30,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:30,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750482179] [2022-11-18 18:50:30,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:50:30,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:30,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:30,199 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:30,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc5509-b188-4f8d-97a6-eac878b1227b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process