./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/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_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/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_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/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 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- 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 20:49:44,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:49:44,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:49:44,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:49:44,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:49:44,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:49:44,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:49:44,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:49:44,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:49:44,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:49:44,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:49:44,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:49:44,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:49:44,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:49:44,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:49:44,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:49:44,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:49:44,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:49:44,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:49:44,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:49:44,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:49:44,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:49:44,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:49:44,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:49:44,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:49:44,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:49:44,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:49:44,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:49:44,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:49:44,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:49:44,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:49:44,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:49:44,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:49:44,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:49:44,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:49:44,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:49:44,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:49:44,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:49:44,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:49:44,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:49:44,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:49:44,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:49:44,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:49:44,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:49:44,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:49:44,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:49:44,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:49:44,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:49:44,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:49:44,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:49:44,367 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:49:44,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:49:44,369 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:49:44,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:49:44,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:49:44,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:49:44,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:49:44,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:49:44,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:49:44,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:49:44,371 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:49:44,371 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:49:44,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:49:44,371 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:49:44,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:49:44,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:49:44,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:49:44,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:49:44,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:49:44,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:49:44,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:49:44,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:49:44,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:49:44,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:49:44,376 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:49:44,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:49:44,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:49:44,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2022-11-18 20:49:44,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:49:44,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:49:44,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:49:44,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:49:44,698 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:49:44,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2022-11-18 20:49:44,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/data/940e04b31/2aa5d52ffaa24ed6bb9c376f7085d838/FLAG6096eb001 [2022-11-18 20:49:45,486 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:49:45,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2022-11-18 20:49:45,507 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/data/940e04b31/2aa5d52ffaa24ed6bb9c376f7085d838/FLAG6096eb001 [2022-11-18 20:49:45,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/data/940e04b31/2aa5d52ffaa24ed6bb9c376f7085d838 [2022-11-18 20:49:45,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:49:45,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:49:45,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:49:45,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:49:45,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:49:45,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:45" (1/1) ... [2022-11-18 20:49:45,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e37c3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:45, skipping insertion in model container [2022-11-18 20:49:45,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:45" (1/1) ... [2022-11-18 20:49:45,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:49:45,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:49:46,334 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2022-11-18 20:49:46,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:49:46,567 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:49:46,595 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2022-11-18 20:49:46,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:49:46,698 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:49:46,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46 WrapperNode [2022-11-18 20:49:46,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:49:46,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:49:46,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:49:46,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:49:46,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,814 INFO L138 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1443 [2022-11-18 20:49:46,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:49:46,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:49:46,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:49:46,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:49:46,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:49:46,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:49:46,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:49:46,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:49:46,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (1/1) ... [2022-11-18 20:49:46,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:49:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:47,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:49:47,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:49:47,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:49:47,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:49:47,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:49:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:49:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 20:49:47,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 20:49:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:49:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:49:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:49:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:49:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:49:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:49:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:49:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:49:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:49:47,508 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:49:47,510 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:49:49,656 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:49:49,666 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:49:49,666 INFO L300 CfgBuilder]: Removed 77 assume(true) statements. [2022-11-18 20:49:49,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:49 BoogieIcfgContainer [2022-11-18 20:49:49,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:49:49,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:49:49,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:49:49,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:49:49,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:45" (1/3) ... [2022-11-18 20:49:49,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ecf0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:49, skipping insertion in model container [2022-11-18 20:49:49,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:46" (2/3) ... [2022-11-18 20:49:49,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ecf0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:49, skipping insertion in model container [2022-11-18 20:49:49,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:49" (3/3) ... [2022-11-18 20:49:49,679 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2022-11-18 20:49:49,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:49:49,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:49:49,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:49:49,790 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;@4b72bf7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:49:49,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 20:49:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 242 states have (on average 1.6983471074380165) internal successors, (411), 258 states have internal predecessors, (411), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 20:49:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:49:49,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:49,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:49:49,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:49:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:49,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1126968937, now seen corresponding path program 1 times [2022-11-18 20:49:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:49,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447341858] [2022-11-18 20:49:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:49,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:50,104 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 20:49:50,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:50,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447341858] [2022-11-18 20:49:50,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447341858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:50,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:50,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:50,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597724652] [2022-11-18 20:49:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:50,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:50,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:50,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:50,166 INFO L87 Difference]: Start difference. First operand has 267 states, 242 states have (on average 1.6983471074380165) internal successors, (411), 258 states have internal predecessors, (411), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 20:49:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:50,346 INFO L93 Difference]: Finished difference Result 703 states and 1187 transitions. [2022-11-18 20:49:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:50,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:49:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:50,364 INFO L225 Difference]: With dead ends: 703 [2022-11-18 20:49:50,364 INFO L226 Difference]: Without dead ends: 384 [2022-11-18 20:49:50,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:50,372 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 211 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:50,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 739 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:49:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-18 20:49:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 216. [2022-11-18 20:49:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 193 states have (on average 1.3264248704663213) internal successors, (256), 207 states have internal predecessors, (256), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 20:49:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 288 transitions. [2022-11-18 20:49:50,441 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 288 transitions. Word has length 6 [2022-11-18 20:49:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:50,442 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 288 transitions. [2022-11-18 20:49:50,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 20:49:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 288 transitions. [2022-11-18 20:49:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 20:49:50,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:50,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:50,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:49:50,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:49:50,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:50,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1509086869, now seen corresponding path program 1 times [2022-11-18 20:49:50,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:50,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030116178] [2022-11-18 20:49:50,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:50,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:50,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:49:50,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150553008] [2022-11-18 20:49:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:50,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:50,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:50,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:50,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:49:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:52,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:49:52,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:52,272 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 20:49:52,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:52,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:52,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030116178] [2022-11-18 20:49:52,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:49:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150553008] [2022-11-18 20:49:52,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150553008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:52,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:52,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:52,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230753886] [2022-11-18 20:49:52,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:52,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:52,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:52,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:52,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:52,279 INFO L87 Difference]: Start difference. First operand 216 states and 288 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:52,386 INFO L93 Difference]: Finished difference Result 447 states and 601 transitions. [2022-11-18 20:49:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:52,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-18 20:49:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:52,389 INFO L225 Difference]: With dead ends: 447 [2022-11-18 20:49:52,389 INFO L226 Difference]: Without dead ends: 237 [2022-11-18 20:49:52,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:52,392 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 9 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:52,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 513 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:49:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-18 20:49:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2022-11-18 20:49:52,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 213 states have (on average 1.295774647887324) internal successors, (276), 227 states have internal predecessors, (276), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 20:49:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 308 transitions. [2022-11-18 20:49:52,413 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 308 transitions. Word has length 103 [2022-11-18 20:49:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:52,414 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 308 transitions. [2022-11-18 20:49:52,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 308 transitions. [2022-11-18 20:49:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 20:49:52,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:52,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:52,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:52,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:52,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:49:52,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1749326615, now seen corresponding path program 1 times [2022-11-18 20:49:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:52,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422088239] [2022-11-18 20:49:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:52,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:49:52,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238532367] [2022-11-18 20:49:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:52,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:52,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:52,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:53,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:49:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:54,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:49:54,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:54,529 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 20:49:54,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:54,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:54,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422088239] [2022-11-18 20:49:54,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:49:54,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238532367] [2022-11-18 20:49:54,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238532367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:54,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:54,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:54,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576921927] [2022-11-18 20:49:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:54,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:54,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:54,534 INFO L87 Difference]: Start difference. First operand 236 states and 308 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:54,649 INFO L93 Difference]: Finished difference Result 487 states and 641 transitions. [2022-11-18 20:49:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:54,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-18 20:49:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:54,653 INFO L225 Difference]: With dead ends: 487 [2022-11-18 20:49:54,653 INFO L226 Difference]: Without dead ends: 257 [2022-11-18 20:49:54,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:54,663 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 9 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:54,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 513 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:49:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-18 20:49:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2022-11-18 20:49:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 233 states have (on average 1.2703862660944205) internal successors, (296), 247 states have internal predecessors, (296), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 20:49:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 328 transitions. [2022-11-18 20:49:54,699 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 328 transitions. Word has length 103 [2022-11-18 20:49:54,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:54,701 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 328 transitions. [2022-11-18 20:49:54,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 328 transitions. [2022-11-18 20:49:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 20:49:54,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:54,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:54,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:54,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:54,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:49:54,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:54,924 INFO L85 PathProgramCache]: Analyzing trace with hash 494656683, now seen corresponding path program 1 times [2022-11-18 20:49:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:54,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131833713] [2022-11-18 20:49:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:55,272 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:49:55,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006178623] [2022-11-18 20:49:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:55,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:55,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:55,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:55,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:49:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:57,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:49:57,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:57,095 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 20:49:57,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:57,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:57,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131833713] [2022-11-18 20:49:57,105 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:49:57,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006178623] [2022-11-18 20:49:57,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006178623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:57,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:57,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:49:57,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719146854] [2022-11-18 20:49:57,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:57,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:49:57,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:57,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:49:57,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:49:57,108 INFO L87 Difference]: Start difference. First operand 256 states and 328 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:57,247 INFO L93 Difference]: Finished difference Result 497 states and 641 transitions. [2022-11-18 20:49:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:49:57,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-18 20:49:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:57,261 INFO L225 Difference]: With dead ends: 497 [2022-11-18 20:49:57,262 INFO L226 Difference]: Without dead ends: 247 [2022-11-18 20:49:57,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:57,263 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 240 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:57,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 550 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:49:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-18 20:49:57,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 242. [2022-11-18 20:49:57,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 219 states have (on average 1.2557077625570776) internal successors, (275), 233 states have internal predecessors, (275), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 20:49:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 307 transitions. [2022-11-18 20:49:57,290 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 307 transitions. Word has length 103 [2022-11-18 20:49:57,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:57,290 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 307 transitions. [2022-11-18 20:49:57,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 307 transitions. [2022-11-18 20:49:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 20:49:57,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:57,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:57,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:57,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 20:49:57,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:49:57,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:57,508 INFO L85 PathProgramCache]: Analyzing trace with hash -419194439, now seen corresponding path program 1 times [2022-11-18 20:49:57,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:57,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361607808] [2022-11-18 20:49:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:57,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:57,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:49:57,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632519806] [2022-11-18 20:49:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:57,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:57,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:57,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:57,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:49:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:59,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:49:59,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:59,643 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 20:49:59,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:59,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:59,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361607808] [2022-11-18 20:49:59,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:49:59,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632519806] [2022-11-18 20:49:59,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632519806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:59,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:59,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:49:59,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776071223] [2022-11-18 20:49:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:59,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:49:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:59,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:49:59,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:49:59,647 INFO L87 Difference]: Start difference. First operand 242 states and 307 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:59,782 INFO L93 Difference]: Finished difference Result 556 states and 705 transitions. [2022-11-18 20:49:59,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:49:59,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-18 20:49:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:59,787 INFO L225 Difference]: With dead ends: 556 [2022-11-18 20:49:59,788 INFO L226 Difference]: Without dead ends: 320 [2022-11-18 20:49:59,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:59,789 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 233 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:59,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 836 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:49:59,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-18 20:49:59,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 228. [2022-11-18 20:49:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 205 states have (on average 1.2390243902439024) internal successors, (254), 219 states have internal predecessors, (254), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 20:49:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 286 transitions. [2022-11-18 20:49:59,818 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 286 transitions. Word has length 103 [2022-11-18 20:49:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:59,821 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 286 transitions. [2022-11-18 20:49:59,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:59,823 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 286 transitions. [2022-11-18 20:49:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 20:49:59,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:59,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:59,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:50:00,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:00,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:50:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1604741739, now seen corresponding path program 1 times [2022-11-18 20:50:00,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:00,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338797311] [2022-11-18 20:50:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:00,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:00,260 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:50:00,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312423185] [2022-11-18 20:50:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:00,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:00,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:00,262 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:00,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:50:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:02,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:50:02,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:50:02,339 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 20:50:02,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:50:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:02,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338797311] [2022-11-18 20:50:02,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:50:02,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312423185] [2022-11-18 20:50:02,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312423185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:02,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:02,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:02,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679945786] [2022-11-18 20:50:02,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:02,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:50:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:50:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:50:02,343 INFO L87 Difference]: Start difference. First operand 228 states and 286 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:50:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:02,403 INFO L93 Difference]: Finished difference Result 408 states and 504 transitions. [2022-11-18 20:50:02,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:50:02,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-18 20:50:02,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:02,407 INFO L225 Difference]: With dead ends: 408 [2022-11-18 20:50:02,407 INFO L226 Difference]: Without dead ends: 407 [2022-11-18 20:50:02,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:50:02,408 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 99 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:02,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 853 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:50:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-18 20:50:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2022-11-18 20:50:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 376 states have (on average 1.2154255319148937) internal successors, (457), 390 states have internal predecessors, (457), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:50:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 501 transitions. [2022-11-18 20:50:02,433 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 501 transitions. Word has length 103 [2022-11-18 20:50:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:02,434 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 501 transitions. [2022-11-18 20:50:02,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:50:02,434 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 501 transitions. [2022-11-18 20:50:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 20:50:02,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:02,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:02,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:50:02,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:02,650 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:50:02,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1792612892, now seen corresponding path program 1 times [2022-11-18 20:50:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:02,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425837185] [2022-11-18 20:50:02,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:02,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:02,859 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:50:02,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780265477] [2022-11-18 20:50:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:02,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:02,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:02,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:02,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:50:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:04,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:50:04,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:50:05,094 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 20:50:05,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:50:05,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:05,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425837185] [2022-11-18 20:50:05,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:50:05,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780265477] [2022-11-18 20:50:05,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780265477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:05,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:05,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:05,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585370459] [2022-11-18 20:50:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:05,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:50:05,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:50:05,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:50:05,098 INFO L87 Difference]: Start difference. First operand 405 states and 501 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 20:50:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:05,144 INFO L93 Difference]: Finished difference Result 405 states and 501 transitions. [2022-11-18 20:50:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:50:05,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-11-18 20:50:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:05,147 INFO L225 Difference]: With dead ends: 405 [2022-11-18 20:50:05,148 INFO L226 Difference]: Without dead ends: 404 [2022-11-18 20:50:05,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:50:05,149 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 129 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:05,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 541 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:50:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-18 20:50:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2022-11-18 20:50:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 376 states have (on average 1.2127659574468086) internal successors, (456), 389 states have internal predecessors, (456), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:50:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 500 transitions. [2022-11-18 20:50:05,171 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 500 transitions. Word has length 104 [2022-11-18 20:50:05,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:05,171 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 500 transitions. [2022-11-18 20:50:05,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 20:50:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 500 transitions. [2022-11-18 20:50:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-18 20:50:05,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:05,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:05,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:50:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:05,389 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:50:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 970567307, now seen corresponding path program 1 times [2022-11-18 20:50:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:05,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866791324] [2022-11-18 20:50:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:05,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:50:05,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693264764] [2022-11-18 20:50:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:05,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:05,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:05,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:05,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:50:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:07,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:50:07,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:50:07,999 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 20:50:07,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:50:08,185 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 20:50:08,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:08,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866791324] [2022-11-18 20:50:08,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:50:08,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693264764] [2022-11-18 20:50:08,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693264764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:50:08,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:50:08,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:50:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374239247] [2022-11-18 20:50:08,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:50:08,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:50:08,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:50:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:50:08,189 INFO L87 Difference]: Start difference. First operand 404 states and 500 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 20:50:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:08,337 INFO L93 Difference]: Finished difference Result 622 states and 778 transitions. [2022-11-18 20:50:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:08,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-18 20:50:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:08,341 INFO L225 Difference]: With dead ends: 622 [2022-11-18 20:50:08,341 INFO L226 Difference]: Without dead ends: 588 [2022-11-18 20:50:08,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:50:08,342 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 655 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:08,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1679 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:50:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-11-18 20:50:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2022-11-18 20:50:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 554 states have (on average 1.203971119133574) internal successors, (667), 567 states have internal predecessors, (667), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-18 20:50:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 723 transitions. [2022-11-18 20:50:08,428 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 723 transitions. Word has length 108 [2022-11-18 20:50:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:08,429 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 723 transitions. [2022-11-18 20:50:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 20:50:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 723 transitions. [2022-11-18 20:50:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-18 20:50:08,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:08,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:08,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:50:08,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:08,649 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:50:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:08,649 INFO L85 PathProgramCache]: Analyzing trace with hash 969929611, now seen corresponding path program 1 times [2022-11-18 20:50:08,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:08,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074681998] [2022-11-18 20:50:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:08,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:08,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:50:08,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25428048] [2022-11-18 20:50:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:08,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:08,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:08,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:08,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:50:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:11,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2972 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:50:11,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:50:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:11,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:50:11,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:11,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074681998] [2022-11-18 20:50:11,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:50:11,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25428048] [2022-11-18 20:50:11,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25428048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:11,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:11,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678423705] [2022-11-18 20:50:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:11,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:50:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:50:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:11,623 INFO L87 Difference]: Start difference. First operand 588 states and 723 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:50:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:11,714 INFO L93 Difference]: Finished difference Result 1029 states and 1272 transitions. [2022-11-18 20:50:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:50:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-18 20:50:11,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:11,717 INFO L225 Difference]: With dead ends: 1029 [2022-11-18 20:50:11,718 INFO L226 Difference]: Without dead ends: 586 [2022-11-18 20:50:11,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:11,722 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 62 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:11,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 523 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:50:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-18 20:50:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-11-18 20:50:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 552 states have (on average 1.2028985507246377) internal successors, (664), 565 states have internal predecessors, (664), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-18 20:50:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 720 transitions. [2022-11-18 20:50:11,759 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 720 transitions. Word has length 108 [2022-11-18 20:50:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:11,760 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 720 transitions. [2022-11-18 20:50:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:50:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 720 transitions. [2022-11-18 20:50:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 20:50:11,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:11,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:11,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:50:11,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:11,977 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:50:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1603112573, now seen corresponding path program 1 times [2022-11-18 20:50:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:11,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498746397] [2022-11-18 20:50:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:11,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:12,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:50:12,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686353062] [2022-11-18 20:50:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:12,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:12,165 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:12,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:50:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:14,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:50:14,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:50:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:50:14,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:50:14,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:14,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498746397] [2022-11-18 20:50:14,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:50:14,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686353062] [2022-11-18 20:50:14,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686353062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:14,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:14,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73657413] [2022-11-18 20:50:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:14,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:50:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:50:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:14,548 INFO L87 Difference]: Start difference. First operand 586 states and 720 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:50:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:14,612 INFO L93 Difference]: Finished difference Result 1112 states and 1372 transitions. [2022-11-18 20:50:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:50:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2022-11-18 20:50:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:14,616 INFO L225 Difference]: With dead ends: 1112 [2022-11-18 20:50:14,616 INFO L226 Difference]: Without dead ends: 584 [2022-11-18 20:50:14,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:14,618 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 15 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:14,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 521 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:50:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-11-18 20:50:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2022-11-18 20:50:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 550 states have (on average 1.201818181818182) internal successors, (661), 563 states have internal predecessors, (661), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-18 20:50:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 717 transitions. [2022-11-18 20:50:14,644 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 717 transitions. Word has length 123 [2022-11-18 20:50:14,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:14,645 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 717 transitions. [2022-11-18 20:50:14,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:50:14,645 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 717 transitions. [2022-11-18 20:50:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 20:50:14,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:14,647 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:14,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:50:14,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:50:14,863 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:50:14,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash -770179006, now seen corresponding path program 1 times [2022-11-18 20:50:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:14,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352286532] [2022-11-18 20:50:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:14,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:50:14,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684989514] [2022-11-18 20:50:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:14,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:14,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:14,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:14,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:50:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:34,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:50:34,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:50:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:50:34,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:50:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:34,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352286532] [2022-11-18 20:50:34,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:50:34,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684989514] [2022-11-18 20:50:34,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684989514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:34,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:34,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:50:34,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427372150] [2022-11-18 20:50:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:34,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:50:34,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:34,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:50:34,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:50:34,103 INFO L87 Difference]: Start difference. First operand 584 states and 717 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:50:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:34,173 INFO L93 Difference]: Finished difference Result 1119 states and 1397 transitions. [2022-11-18 20:50:34,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:50:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2022-11-18 20:50:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:34,179 INFO L225 Difference]: With dead ends: 1119 [2022-11-18 20:50:34,179 INFO L226 Difference]: Without dead ends: 587 [2022-11-18 20:50:34,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:50:34,181 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 2 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:34,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 788 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:50:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-18 20:50:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2022-11-18 20:50:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 552 states have (on average 1.2028985507246377) internal successors, (664), 566 states have internal predecessors, (664), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-18 20:50:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 726 transitions. [2022-11-18 20:50:34,210 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 726 transitions. Word has length 138 [2022-11-18 20:50:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:34,211 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 726 transitions. [2022-11-18 20:50:34,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:50:34,211 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 726 transitions. [2022-11-18 20:50:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:50:34,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:34,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:34,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:50:34,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:34,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:50:34,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:34,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2001138178, now seen corresponding path program 1 times [2022-11-18 20:50:34,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:34,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065099618] [2022-11-18 20:50:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:34,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:34,571 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:50:34,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388054613] [2022-11-18 20:50:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:34,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:34,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:34,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:34,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 21:02:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:01,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:01,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:02:01,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 21:02:01,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:01,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065099618] [2022-11-18 21:02:01,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388054613] [2022-11-18 21:02:01,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388054613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:01,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:01,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 21:02:01,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010391126] [2022-11-18 21:02:01,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:01,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:01,867 INFO L87 Difference]: Start difference. First operand 587 states and 726 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:02:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:02,036 INFO L93 Difference]: Finished difference Result 1133 states and 1433 transitions. [2022-11-18 21:02:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:02:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 142 [2022-11-18 21:02:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:02,040 INFO L225 Difference]: With dead ends: 1133 [2022-11-18 21:02:02,040 INFO L226 Difference]: Without dead ends: 598 [2022-11-18 21:02:02,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:02:02,042 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 16 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:02,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1048 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:02:02,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-18 21:02:02,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 596. [2022-11-18 21:02:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 560 states have (on average 1.2107142857142856) internal successors, (678), 574 states have internal predecessors, (678), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-18 21:02:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 740 transitions. [2022-11-18 21:02:02,075 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 740 transitions. Word has length 142 [2022-11-18 21:02:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:02,075 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 740 transitions. [2022-11-18 21:02:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:02:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 740 transitions. [2022-11-18 21:02:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 21:02:02,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:02,078 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:02,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:02,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:02,291 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:02:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1003915522, now seen corresponding path program 2 times [2022-11-18 21:02:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:02,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733009601] [2022-11-18 21:02:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:02,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:02,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:02,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974938401] [2022-11-18 21:02:02,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:02,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:02,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:02,387 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:02,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 21:02:05,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:05,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:05,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 21:02:05,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 68 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 21:02:05,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-18 21:02:05,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:05,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733009601] [2022-11-18 21:02:05,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:05,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974938401] [2022-11-18 21:02:05,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974938401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:05,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:05,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2022-11-18 21:02:05,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621716868] [2022-11-18 21:02:05,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:05,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 21:02:05,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:05,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 21:02:05,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:02:05,349 INFO L87 Difference]: Start difference. First operand 596 states and 740 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:02:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:05,838 INFO L93 Difference]: Finished difference Result 1192 states and 1541 transitions. [2022-11-18 21:02:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 21:02:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 150 [2022-11-18 21:02:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:05,842 INFO L225 Difference]: With dead ends: 1192 [2022-11-18 21:02:05,842 INFO L226 Difference]: Without dead ends: 604 [2022-11-18 21:02:05,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2022-11-18 21:02:05,844 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 269 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:05,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1558 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:02:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-18 21:02:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2022-11-18 21:02:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 558 states have (on average 1.2168458781362008) internal successors, (679), 572 states have internal predecessors, (679), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-18 21:02:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 741 transitions. [2022-11-18 21:02:05,878 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 741 transitions. Word has length 150 [2022-11-18 21:02:05,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:05,878 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 741 transitions. [2022-11-18 21:02:05,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:02:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 741 transitions. [2022-11-18 21:02:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-18 21:02:05,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:05,881 INFO L195 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:05,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:06,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 21:02:06,095 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:02:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1939741760, now seen corresponding path program 3 times [2022-11-18 21:02:06,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:06,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556678474] [2022-11-18 21:02:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:06,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:06,198 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:06,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267848254] [2022-11-18 21:02:06,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:02:06,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:06,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:06,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:06,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 21:03:19,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 21:03:19,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:03:19,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:03:19,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 21:03:19,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 21:03:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:20,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556678474] [2022-11-18 21:03:20,345 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:20,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267848254] [2022-11-18 21:03:20,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267848254] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:20,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:03:20,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-11-18 21:03:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671108561] [2022-11-18 21:03:20,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:20,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:03:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:20,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:03:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:03:20,348 INFO L87 Difference]: Start difference. First operand 594 states and 741 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:03:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:20,453 INFO L93 Difference]: Finished difference Result 594 states and 741 transitions. [2022-11-18 21:03:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:03:20,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 164 [2022-11-18 21:03:20,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:20,457 INFO L225 Difference]: With dead ends: 594 [2022-11-18 21:03:20,457 INFO L226 Difference]: Without dead ends: 593 [2022-11-18 21:03:20,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:03:20,458 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 413 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:20,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 586 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:03:20,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-18 21:03:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-11-18 21:03:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 558 states have (on average 1.2132616487455197) internal successors, (677), 571 states have internal predecessors, (677), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-18 21:03:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 739 transitions. [2022-11-18 21:03:20,494 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 739 transitions. Word has length 164 [2022-11-18 21:03:20,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:20,495 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 739 transitions. [2022-11-18 21:03:20,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:03:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 739 transitions. [2022-11-18 21:03:20,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-18 21:03:20,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:20,502 INFO L195 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:20,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:20,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 21:03:20,719 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:03:20,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1859223122, now seen corresponding path program 1 times [2022-11-18 21:03:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:20,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98985937] [2022-11-18 21:03:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:21,276 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:21,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156922190] [2022-11-18 21:03:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:21,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:21,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:21,283 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:21,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 21:03:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:25,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 7430 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:03:25,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 21:03:25,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 21:03:26,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:26,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98985937] [2022-11-18 21:03:26,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:26,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156922190] [2022-11-18 21:03:26,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156922190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:26,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:26,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 21:03:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107113535] [2022-11-18 21:03:26,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:26,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:03:26,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:03:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:03:26,417 INFO L87 Difference]: Start difference. First operand 593 states and 739 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:03:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:26,641 INFO L93 Difference]: Finished difference Result 801 states and 1008 transitions. [2022-11-18 21:03:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:03:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 363 [2022-11-18 21:03:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:26,645 INFO L225 Difference]: With dead ends: 801 [2022-11-18 21:03:26,646 INFO L226 Difference]: Without dead ends: 800 [2022-11-18 21:03:26,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:03:26,649 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 725 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:26,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1289 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:03:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-18 21:03:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 592. [2022-11-18 21:03:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 558 states have (on average 1.2114695340501793) internal successors, (676), 570 states have internal predecessors, (676), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-18 21:03:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 738 transitions. [2022-11-18 21:03:26,689 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 738 transitions. Word has length 363 [2022-11-18 21:03:26,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:26,690 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 738 transitions. [2022-11-18 21:03:26,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:03:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 738 transitions. [2022-11-18 21:03:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-18 21:03:26,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:26,698 INFO L195 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:26,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:26,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 21:03:26,923 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:03:26,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:26,923 INFO L85 PathProgramCache]: Analyzing trace with hash -472780028, now seen corresponding path program 1 times [2022-11-18 21:03:26,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:26,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168796346] [2022-11-18 21:03:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:26,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:27,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:27,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287654628] [2022-11-18 21:03:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:27,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:27,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:27,495 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:27,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 21:03:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:32,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 7454 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:03:32,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 21:03:32,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 21:03:33,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:33,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168796346] [2022-11-18 21:03:33,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:33,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287654628] [2022-11-18 21:03:33,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287654628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:33,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:33,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 21:03:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186303862] [2022-11-18 21:03:33,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:33,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:03:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:03:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:03:33,129 INFO L87 Difference]: Start difference. First operand 592 states and 738 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:03:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:33,466 INFO L93 Difference]: Finished difference Result 1341 states and 1666 transitions. [2022-11-18 21:03:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:03:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 368 [2022-11-18 21:03:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:33,474 INFO L225 Difference]: With dead ends: 1341 [2022-11-18 21:03:33,475 INFO L226 Difference]: Without dead ends: 1308 [2022-11-18 21:03:33,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:03:33,476 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1865 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:33,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 2325 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:03:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-11-18 21:03:33,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1308. [2022-11-18 21:03:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1250 states have (on average 1.1936) internal successors, (1492), 1262 states have internal predecessors, (1492), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2022-11-18 21:03:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1610 transitions. [2022-11-18 21:03:33,559 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1610 transitions. Word has length 368 [2022-11-18 21:03:33,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:33,561 INFO L495 AbstractCegarLoop]: Abstraction has 1308 states and 1610 transitions. [2022-11-18 21:03:33,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:03:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1610 transitions. [2022-11-18 21:03:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2022-11-18 21:03:33,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:33,585 INFO L195 NwaCegarLoop]: trace histogram [26, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 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 21:03:33,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:33,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 21:03:33,804 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:03:33,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1299076724, now seen corresponding path program 2 times [2022-11-18 21:03:33,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:33,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536070315] [2022-11-18 21:03:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:33,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:35,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:35,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576874717] [2022-11-18 21:03:35,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:03:35,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:35,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:35,086 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:35,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 21:03:40,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:03:40,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:03:40,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:03:40,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2578 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2578 trivial. 0 not checked. [2022-11-18 21:03:41,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:41,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:41,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536070315] [2022-11-18 21:03:41,421 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:41,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576874717] [2022-11-18 21:03:41,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576874717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:41,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:41,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:03:41,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250710835] [2022-11-18 21:03:41,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:41,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:41,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:41,423 INFO L87 Difference]: Start difference. First operand 1308 states and 1610 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:03:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:41,637 INFO L93 Difference]: Finished difference Result 1334 states and 1656 transitions. [2022-11-18 21:03:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:03:41,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 776 [2022-11-18 21:03:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:41,644 INFO L225 Difference]: With dead ends: 1334 [2022-11-18 21:03:41,644 INFO L226 Difference]: Without dead ends: 1333 [2022-11-18 21:03:41,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:03:41,646 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 104 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:41,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 558 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:03:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2022-11-18 21:03:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1310. [2022-11-18 21:03:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1252 states have (on average 1.1932907348242812) internal successors, (1494), 1264 states have internal predecessors, (1494), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2022-11-18 21:03:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1612 transitions. [2022-11-18 21:03:41,817 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1612 transitions. Word has length 776 [2022-11-18 21:03:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:41,818 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1612 transitions. [2022-11-18 21:03:41,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:03:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1612 transitions. [2022-11-18 21:03:41,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2022-11-18 21:03:41,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:41,867 INFO L195 NwaCegarLoop]: trace histogram [26, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 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 21:03:41,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:42,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 21:03:42,071 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:03:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1616672013, now seen corresponding path program 1 times [2022-11-18 21:03:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:42,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799577277] [2022-11-18 21:03:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:42,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:43,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:43,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92881237] [2022-11-18 21:03:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:43,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:43,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:43,540 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:43,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 21:03:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:53,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 19103 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 21:03:53,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2578 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 21:03:54,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2578 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 21:03:55,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:55,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799577277] [2022-11-18 21:03:55,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:55,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92881237] [2022-11-18 21:03:55,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92881237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:55,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:55,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-18 21:03:55,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626837722] [2022-11-18 21:03:55,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:55,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 21:03:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 21:03:55,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:03:55,930 INFO L87 Difference]: Start difference. First operand 1310 states and 1612 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:03:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:56,473 INFO L93 Difference]: Finished difference Result 1882 states and 2323 transitions. [2022-11-18 21:03:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:03:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 777 [2022-11-18 21:03:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:56,483 INFO L225 Difference]: With dead ends: 1882 [2022-11-18 21:03:56,484 INFO L226 Difference]: Without dead ends: 1847 [2022-11-18 21:03:56,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1561 GetRequests, 1522 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-11-18 21:03:56,486 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 2565 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:56,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 3261 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:03:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2022-11-18 21:03:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1847. [2022-11-18 21:03:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1771 states have (on average 1.189158667419537) internal successors, (2106), 1783 states have internal predecessors, (2106), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2022-11-18 21:03:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2266 transitions. [2022-11-18 21:03:56,672 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2266 transitions. Word has length 777 [2022-11-18 21:03:56,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:56,674 INFO L495 AbstractCegarLoop]: Abstraction has 1847 states and 2266 transitions. [2022-11-18 21:03:56,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 21:03:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2266 transitions. [2022-11-18 21:03:56,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2022-11-18 21:03:56,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:56,700 INFO L195 NwaCegarLoop]: trace histogram [26, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 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 21:03:56,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:56,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 21:03:56,915 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:03:56,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2056893811, now seen corresponding path program 2 times [2022-11-18 21:03:56,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:56,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700658035] [2022-11-18 21:03:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:56,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:58,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:58,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338303046] [2022-11-18 21:03:58,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:03:58,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:58,795 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:58,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 21:04:07,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:04:07,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:04:07,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:04:07,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5017 trivial. 0 not checked. [2022-11-18 21:04:09,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:09,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:09,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700658035] [2022-11-18 21:04:09,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:09,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338303046] [2022-11-18 21:04:09,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338303046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:09,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:09,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:04:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621007419] [2022-11-18 21:04:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:09,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:04:09,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:04:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:04:09,267 INFO L87 Difference]: Start difference. First operand 1847 states and 2266 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:04:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:09,427 INFO L93 Difference]: Finished difference Result 1847 states and 2266 transitions. [2022-11-18 21:04:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:04:09,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1083 [2022-11-18 21:04:09,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:09,441 INFO L225 Difference]: With dead ends: 1847 [2022-11-18 21:04:09,441 INFO L226 Difference]: Without dead ends: 1846 [2022-11-18 21:04:09,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1080 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:04:09,443 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 139 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:09,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 466 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:04:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-11-18 21:04:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1846. [2022-11-18 21:04:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1771 states have (on average 1.1885940146809713) internal successors, (2105), 1782 states have internal predecessors, (2105), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2022-11-18 21:04:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2265 transitions. [2022-11-18 21:04:09,601 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2265 transitions. Word has length 1083 [2022-11-18 21:04:09,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:09,603 INFO L495 AbstractCegarLoop]: Abstraction has 1846 states and 2265 transitions. [2022-11-18 21:04:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:04:09,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2265 transitions. [2022-11-18 21:04:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1095 [2022-11-18 21:04:09,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:09,630 INFO L195 NwaCegarLoop]: trace histogram [26, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:09,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:09,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:09,844 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:04:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1556610602, now seen corresponding path program 1 times [2022-11-18 21:04:09,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:09,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835948616] [2022-11-18 21:04:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:09,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:11,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:11,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751076793] [2022-11-18 21:04:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:11,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:11,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:11,789 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:11,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 21:04:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 27874 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:04:28,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5019 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5017 trivial. 0 not checked. [2022-11-18 21:04:29,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5019 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5017 trivial. 0 not checked. [2022-11-18 21:04:31,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:31,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835948616] [2022-11-18 21:04:31,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:31,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751076793] [2022-11-18 21:04:31,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751076793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:04:31,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:04:31,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-11-18 21:04:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555611260] [2022-11-18 21:04:31,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:31,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:04:31,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:04:31,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:04:31,329 INFO L87 Difference]: Start difference. First operand 1846 states and 2265 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 21:04:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:31,759 INFO L93 Difference]: Finished difference Result 1938 states and 2416 transitions. [2022-11-18 21:04:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:04:31,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1094 [2022-11-18 21:04:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:31,767 INFO L225 Difference]: With dead ends: 1938 [2022-11-18 21:04:31,767 INFO L226 Difference]: Without dead ends: 1937 [2022-11-18 21:04:31,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2193 GetRequests, 2178 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:04:31,769 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 623 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:31,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 838 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:04:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2022-11-18 21:04:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1936. [2022-11-18 21:04:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1828 states have (on average 1.1991247264770242) internal successors, (2192), 1869 states have internal predecessors, (2192), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 64 states have call predecessors, (120), 100 states have call successors, (120) [2022-11-18 21:04:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 2412 transitions. [2022-11-18 21:04:31,888 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 2412 transitions. Word has length 1094 [2022-11-18 21:04:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:31,890 INFO L495 AbstractCegarLoop]: Abstraction has 1936 states and 2412 transitions. [2022-11-18 21:04:31,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 21:04:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 2412 transitions. [2022-11-18 21:04:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2022-11-18 21:04:31,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:31,907 INFO L195 NwaCegarLoop]: trace histogram [26, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 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 21:04:32,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:32,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:32,127 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 21:04:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1549757294, now seen corresponding path program 2 times [2022-11-18 21:04:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:32,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946191961] [2022-11-18 21:04:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:32,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:34,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:34,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425724389] [2022-11-18 21:04:34,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:04:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:34,078 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:34,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c69f4ff-5ba3-44f5-b62b-f8993eb043c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process