./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/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_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fbe6596ea58bb65874b731661e9f9f596a91893af06dcebaa497157579c7f46 --- 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 20:56:54,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:56:54,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:56:54,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:56:54,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:56:54,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:56:54,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:56:54,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:56:54,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:56:54,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:56:54,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:56:54,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:56:54,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:56:54,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:56:54,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:56:54,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:56:54,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:56:54,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:56:54,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:56:54,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:56:54,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:56:54,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:56:54,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:56:54,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:56:54,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:56:54,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:56:54,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:56:54,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:56:54,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:56:54,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:56:54,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:56:54,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:56:54,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:56:54,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:56:54,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:56:54,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:56:54,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:56:54,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:56:54,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:56:54,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:56:54,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:56:54,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:56:54,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:56:54,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:56:54,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:56:54,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:56:54,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:56:54,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:56:54,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:56:54,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:56:54,580 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:56:54,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:56:54,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:56:54,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:56:54,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:56:54,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:56:54,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:56:54,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:56:54,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:56:54,582 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:56:54,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:56:54,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:56:54,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:56:54,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:56:54,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:56:54,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:56:54,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:56:54,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:56:54,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:56:54,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:56:54,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:56:54,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:56:54,585 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:56:54,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:56:54,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:56:54,586 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_02597e9c-17c2-4825-ab94-d0e5dcd76719/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fbe6596ea58bb65874b731661e9f9f596a91893af06dcebaa497157579c7f46 [2022-11-18 20:56:54,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:56:54,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:56:54,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:56:54,980 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:56:54,981 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:56:54,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c [2022-11-18 20:56:55,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/data/d62941d42/bc27b2ffdd7a4a1b8150a2c338bafd41/FLAGa9b7dd26e [2022-11-18 20:56:55,716 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:56:55,717 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c [2022-11-18 20:56:55,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/data/d62941d42/bc27b2ffdd7a4a1b8150a2c338bafd41/FLAGa9b7dd26e [2022-11-18 20:56:56,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/data/d62941d42/bc27b2ffdd7a4a1b8150a2c338bafd41 [2022-11-18 20:56:56,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:56:56,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:56:56,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:56:56,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:56:56,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:56:56,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c344c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56, skipping insertion in model container [2022-11-18 20:56:56,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:56:56,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:56:56,300 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_02597e9c-17c2-4825-ab94-d0e5dcd76719/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c[458,471] [2022-11-18 20:56:56,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:56:56,328 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:56:56,341 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_02597e9c-17c2-4825-ab94-d0e5dcd76719/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c[458,471] [2022-11-18 20:56:56,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:56:56,364 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:56:56,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56 WrapperNode [2022-11-18 20:56:56,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:56:56,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:56:56,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:56:56,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:56:56,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,412 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-11-18 20:56:56,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:56:56,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:56:56,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:56:56,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:56:56,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,435 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:56:56,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:56:56,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:56:56,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:56:56,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (1/1) ... [2022-11-18 20:56:56,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:56:56,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:56,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:56,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:56:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:56:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:56:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:56:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:56:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:56:56,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:56:56,618 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:56:56,621 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:56:56,852 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:56:56,859 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:56:56,859 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:56:56,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:56 BoogieIcfgContainer [2022-11-18 20:56:56,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:56:56,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:56:56,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:56:56,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:56:56,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:56:56" (1/3) ... [2022-11-18 20:56:56,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77051338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:56:56, skipping insertion in model container [2022-11-18 20:56:56,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:56" (2/3) ... [2022-11-18 20:56:56,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77051338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:56:56, skipping insertion in model container [2022-11-18 20:56:56,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:56" (3/3) ... [2022-11-18 20:56:56,873 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound20.c [2022-11-18 20:56:56,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:56:56,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:56:56,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:56:57,008 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;@64d36a5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:56:57,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:56:57,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:56:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:56:57,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:57,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:57,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:57,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:57,033 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2022-11-18 20:56:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:57,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122037812] [2022-11-18 20:56:57,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:57,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:57,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:57,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122037812] [2022-11-18 20:56:57,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:56:57,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818211316] [2022-11-18 20:56:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:57,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:56:57,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:57,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:56:57,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:56:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:57,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:56:57,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:57,372 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 20:56:57,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:56:57,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818211316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:57,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:57,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:56:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944123778] [2022-11-18 20:56:57,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:57,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:56:57,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:57,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:56:57,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:56:57,427 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:57,453 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2022-11-18 20:56:57,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:56:57,456 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:56:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:57,467 INFO L225 Difference]: With dead ends: 35 [2022-11-18 20:56:57,467 INFO L226 Difference]: Without dead ends: 15 [2022-11-18 20:56:57,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:56:57,475 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:57,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:56:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-18 20:56:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-18 20:56:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:56:57,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-18 20:56:57,522 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-11-18 20:56:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:57,522 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-18 20:56:57,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:57,523 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-18 20:56:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:56:57,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:57,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:57,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:57,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:56:57,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2022-11-18 20:56:57,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:57,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323884997] [2022-11-18 20:56:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:57,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:57,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:56:57,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103653885] [2022-11-18 20:56:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:57,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:56:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:57,753 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:56:57,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:56:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:57,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:56:57,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:57,958 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 20:56:57,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:56:57,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:57,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323884997] [2022-11-18 20:56:57,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:56:57,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103653885] [2022-11-18 20:56:57,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103653885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:57,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:57,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:57,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020507670] [2022-11-18 20:56:57,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:57,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:56:57,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:57,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:56:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:56:57,963 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:58,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:58,087 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-11-18 20:56:58,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:56:58,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:56:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:58,089 INFO L225 Difference]: With dead ends: 26 [2022-11-18 20:56:58,089 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 20:56:58,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:58,092 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:58,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:56:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 20:56:58,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-18 20:56:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:56:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-11-18 20:56:58,109 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2022-11-18 20:56:58,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:58,110 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-11-18 20:56:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-11-18 20:56:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:56:58,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:58,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:58,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:56:58,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:56:58,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:58,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:58,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2022-11-18 20:56:58,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:58,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982843348] [2022-11-18 20:56:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:58,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:58,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:56:58,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690283897] [2022-11-18 20:56:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:58,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:56:58,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:58,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:56:58,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:56:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:58,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:56:58,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:58,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:59,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982843348] [2022-11-18 20:56:59,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:56:59,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690283897] [2022-11-18 20:56:59,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690283897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:56:59,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:56:59,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2022-11-18 20:56:59,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424540382] [2022-11-18 20:56:59,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:56:59,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:56:59,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:59,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:56:59,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:56:59,558 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:56:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:59,791 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-11-18 20:56:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:56:59,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-18 20:56:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:59,793 INFO L225 Difference]: With dead ends: 33 [2022-11-18 20:56:59,793 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 20:56:59,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:56:59,795 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:59,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:56:59,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 20:56:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-18 20:56:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:56:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-18 20:56:59,809 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2022-11-18 20:56:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:59,809 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-18 20:56:59,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:56:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-18 20:56:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:56:59,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:59,811 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:59,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:57:00,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:00,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:00,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2022-11-18 20:57:00,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:00,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433260978] [2022-11-18 20:57:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:00,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:00,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:57:00,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628446475] [2022-11-18 20:57:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:00,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:00,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:00,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:00,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:57:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:00,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:57:00,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:57:00,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:57:04,545 WARN L837 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 20:57:24,744 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0)))) is different from true [2022-11-18 20:57:42,852 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-18 20:57:48,926 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 20:57:50,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:50,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433260978] [2022-11-18 20:57:50,970 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:57:50,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628446475] [2022-11-18 20:57:50,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628446475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:50,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:57:50,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-18 20:57:50,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163046848] [2022-11-18 20:57:50,971 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:57:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:57:50,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:50,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:57:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=107, Unknown=4, NotChecked=92, Total=240 [2022-11-18 20:57:50,973 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:57:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:51,152 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-18 20:57:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:57:51,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-18 20:57:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:51,154 INFO L225 Difference]: With dead ends: 31 [2022-11-18 20:57:51,154 INFO L226 Difference]: Without dead ends: 26 [2022-11-18 20:57:51,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=56, Invalid=166, Unknown=4, NotChecked=116, Total=342 [2022-11-18 20:57:51,156 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:51,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:57:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-18 20:57:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-18 20:57:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:57:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-18 20:57:51,166 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2022-11-18 20:57:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:51,167 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-18 20:57:51,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:57:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-18 20:57:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:57:51,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:51,169 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:51,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:51,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:51,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1075497887, now seen corresponding path program 2 times [2022-11-18 20:57:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:51,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9659528] [2022-11-18 20:57:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:51,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:51,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:57:51,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619337333] [2022-11-18 20:57:51,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:57:51,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:51,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:51,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:57:51,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:57:51,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:57:51,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:57:51,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:57:51,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:57:56,049 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 20:57:56,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:56,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9659528] [2022-11-18 20:57:56,052 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:57:56,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619337333] [2022-11-18 20:57:56,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619337333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:56,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:57:56,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-18 20:57:56,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068566711] [2022-11-18 20:57:56,054 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:57:56,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:57:56,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:56,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:57:56,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=148, Unknown=1, NotChecked=24, Total=210 [2022-11-18 20:57:56,055 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:57:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:56,278 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-18 20:57:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:57:56,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-11-18 20:57:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:56,280 INFO L225 Difference]: With dead ends: 34 [2022-11-18 20:57:56,281 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 20:57:56,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=56, Invalid=219, Unknown=1, NotChecked=30, Total=306 [2022-11-18 20:57:56,282 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:56,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:57:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 20:57:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-18 20:57:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 20:57:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-18 20:57:56,306 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-11-18 20:57:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:56,307 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-18 20:57:56,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:57:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-18 20:57:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:57:56,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:56,312 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:56,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:56,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:56,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash 817917912, now seen corresponding path program 3 times [2022-11-18 20:57:56,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:56,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098948052] [2022-11-18 20:57:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:56,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:56,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:57:56,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629790536] [2022-11-18 20:57:56,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:57:56,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:56,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:56,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:56,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:57:56,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:57:56,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:57:56,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:57:56,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:57:56,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:57:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:57:57,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:57,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098948052] [2022-11-18 20:57:57,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:57:57,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629790536] [2022-11-18 20:57:57,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629790536] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:57:57,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:57:57,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-11-18 20:57:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345071281] [2022-11-18 20:57:57,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:57:57,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:57:57,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:57:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:57:57,358 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:57:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:58,791 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2022-11-18 20:57:58,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:57:58,792 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2022-11-18 20:57:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:58,793 INFO L225 Difference]: With dead ends: 47 [2022-11-18 20:57:58,793 INFO L226 Difference]: Without dead ends: 41 [2022-11-18 20:57:58,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:57:58,795 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:58,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 126 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:57:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-18 20:57:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-18 20:57:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:57:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-18 20:57:58,837 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2022-11-18 20:57:58,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:58,842 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-18 20:57:58,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:57:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-18 20:57:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:57:58,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:58,851 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:58,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 20:57:59,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:59,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:59,052 INFO L85 PathProgramCache]: Analyzing trace with hash 385378200, now seen corresponding path program 4 times [2022-11-18 20:57:59,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:59,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53025895] [2022-11-18 20:57:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:59,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:59,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:57:59,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8884965] [2022-11-18 20:57:59,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:57:59,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:59,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:59,084 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:59,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:57:59,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:57:59,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:57:59,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 20:57:59,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 36 proven. 85 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-18 20:57:59,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:03,758 WARN L837 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 20:58:23,869 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18|))))) is different from true [2022-11-18 20:58:41,978 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18|)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-18 20:58:48,074 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 20:58:50,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:50,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53025895] [2022-11-18 20:58:50,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:58:50,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8884965] [2022-11-18 20:58:50,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8884965] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:50,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:58:50,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-18 20:58:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129008163] [2022-11-18 20:58:50,110 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:50,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:58:50,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:50,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:58:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=269, Unknown=4, NotChecked=140, Total=462 [2022-11-18 20:58:50,112 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:58:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:50,675 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-18 20:58:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:58:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 64 [2022-11-18 20:58:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:50,677 INFO L225 Difference]: With dead ends: 49 [2022-11-18 20:58:50,677 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 20:58:50,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=68, Invalid=364, Unknown=4, NotChecked=164, Total=600 [2022-11-18 20:58:50,679 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:50,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 186 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:58:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 20:58:50,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-18 20:58:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 20:58:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2022-11-18 20:58:50,701 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 64 [2022-11-18 20:58:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:50,701 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2022-11-18 20:58:50,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:58:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2022-11-18 20:58:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 20:58:50,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:50,704 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:50,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:58:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:50,913 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:50,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:50,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2073985217, now seen corresponding path program 5 times [2022-11-18 20:58:50,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:50,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350399563] [2022-11-18 20:58:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:50,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:50,938 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:58:50,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194119302] [2022-11-18 20:58:50,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:58:50,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:50,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:50,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:58:50,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:58:51,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-18 20:58:51,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:58:51,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 20:58:51,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:58:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 20 proven. 130 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-18 20:58:51,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:51,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:51,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350399563] [2022-11-18 20:58:51,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:58:51,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194119302] [2022-11-18 20:58:51,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194119302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:51,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:58:51,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-18 20:58:51,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865643323] [2022-11-18 20:58:51,741 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:51,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:58:51,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:58:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:58:51,743 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 20:58:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:52,376 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2022-11-18 20:58:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:58:52,377 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 71 [2022-11-18 20:58:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:52,378 INFO L225 Difference]: With dead ends: 52 [2022-11-18 20:58:52,378 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 20:58:52,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:58:52,380 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:52,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 214 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:58:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 20:58:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-18 20:58:52,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 11 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 20:58:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-18 20:58:52,415 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 71 [2022-11-18 20:58:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:52,418 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-18 20:58:52,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 20:58:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-18 20:58:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 20:58:52,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:52,423 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:52,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:58:52,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:58:52,634 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:52,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1353348984, now seen corresponding path program 6 times [2022-11-18 20:58:52,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:52,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803931095] [2022-11-18 20:58:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:52,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:52,646 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:58:52,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502967908] [2022-11-18 20:58:52,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:58:52,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:52,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:52,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:58:52,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:58:52,936 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-18 20:58:52,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:58:52,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 20:58:52,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:58:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 20 proven. 135 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-18 20:58:53,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 20 proven. 135 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-18 20:58:54,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:54,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803931095] [2022-11-18 20:58:54,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:58:54,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502967908] [2022-11-18 20:58:54,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502967908] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:58:54,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:58:54,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2022-11-18 20:58:54,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841791731] [2022-11-18 20:58:54,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:54,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:58:54,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:58:54,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:58:54,714 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 30 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 22 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:58:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:59,985 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2022-11-18 20:58:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:58:59,992 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 22 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 78 [2022-11-18 20:58:59,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:59,998 INFO L225 Difference]: With dead ends: 83 [2022-11-18 20:58:59,998 INFO L226 Difference]: Without dead ends: 77 [2022-11-18 20:59:00,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=626, Invalid=2236, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 20:59:00,003 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 164 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:00,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 352 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:59:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-18 20:59:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-18 20:59:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:59:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2022-11-18 20:59:00,092 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 78 [2022-11-18 20:59:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:00,093 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2022-11-18 20:59:00,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 22 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:59:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2022-11-18 20:59:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 20:59:00,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:00,107 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:00,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:00,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:00,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:00,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2058456792, now seen corresponding path program 7 times [2022-11-18 20:59:00,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:00,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569895957] [2022-11-18 20:59:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:00,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:59:00,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599544319] [2022-11-18 20:59:00,333 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:59:00,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:00,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:00,335 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:00,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:59:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:00,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-18 20:59:00,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 40 proven. 570 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-18 20:59:02,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 40 proven. 570 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-18 20:59:04,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:04,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569895957] [2022-11-18 20:59:04,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:59:04,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599544319] [2022-11-18 20:59:04,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599544319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:59:04,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:59:04,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 50 [2022-11-18 20:59:04,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023866829] [2022-11-18 20:59:04,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:59:04,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 20:59:04,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 20:59:04,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1963, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 20:59:04,437 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 50 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 48 states have internal predecessors, (95), 42 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-18 20:59:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:24,352 INFO L93 Difference]: Finished difference Result 143 states and 200 transitions. [2022-11-18 20:59:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:59:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 48 states have internal predecessors, (95), 42 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 148 [2022-11-18 20:59:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:24,355 INFO L225 Difference]: With dead ends: 143 [2022-11-18 20:59:24,355 INFO L226 Difference]: Without dead ends: 137 [2022-11-18 20:59:24,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=1995, Invalid=6747, Unknown=0, NotChecked=0, Total=8742 [2022-11-18 20:59:24,358 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 419 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:24,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 935 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 20:59:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-18 20:59:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-18 20:59:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 41 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-18 20:59:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 175 transitions. [2022-11-18 20:59:24,459 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 175 transitions. Word has length 148 [2022-11-18 20:59:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:24,460 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 175 transitions. [2022-11-18 20:59:24,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 48 states have internal predecessors, (95), 42 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-18 20:59:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 175 transitions. [2022-11-18 20:59:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-11-18 20:59:24,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:24,466 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:24,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:24,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:59:24,674 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:24,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:24,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1734321560, now seen corresponding path program 8 times [2022-11-18 20:59:24,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:24,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482209444] [2022-11-18 20:59:24,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:24,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:24,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:59:24,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172324761] [2022-11-18 20:59:24,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:59:24,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:24,700 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:24,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:59:24,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:59:24,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:59:24,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 20:59:24,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5540 backedges. 2574 proven. 0 refuted. 0 times theorem prover too weak. 2966 trivial. 0 not checked. [2022-11-18 20:59:27,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:27,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:27,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482209444] [2022-11-18 20:59:27,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:59:27,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172324761] [2022-11-18 20:59:27,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172324761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:27,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:27,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-11-18 20:59:27,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829921149] [2022-11-18 20:59:27,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:27,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 20:59:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:27,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 20:59:27,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:59:27,223 INFO L87 Difference]: Start difference. First operand 137 states and 175 transitions. Second operand has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 40 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-18 20:59:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:28,416 INFO L93 Difference]: Finished difference Result 141 states and 178 transitions. [2022-11-18 20:59:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:59:28,417 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 40 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 288 [2022-11-18 20:59:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:28,418 INFO L225 Difference]: With dead ends: 141 [2022-11-18 20:59:28,418 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 20:59:28,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1413, Invalid=2747, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 20:59:28,422 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 6 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:28,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 272 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:59:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 20:59:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 20:59:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states 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 20:59:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 20:59:28,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 288 [2022-11-18 20:59:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:28,424 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:59:28,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 40 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-18 20:59:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 20:59:28,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 20:59:28,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 20:59:28,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:59:28,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 20:59:33,882 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 20:59:33,882 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse4 (<= 0 |ULTIMATE.start_main_~k~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse2 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5) (* |ULTIMATE.start_main_~x~0#1| 4))) (.cse3 (<= |ULTIMATE.start_main_~k~0#1| 20))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 18) (= |ULTIMATE.start_main_~y~0#1| 18) .cse1 .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 10) (= |ULTIMATE.start_main_~y~0#1| 10) .cse1 .cse2 .cse3) (and .cse0 (= 5 |ULTIMATE.start_main_~y~0#1|) (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|) .cse2 .cse3) (and .cse4 .cse0 (<= 20 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 (<= 19 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 19) (= 19 |ULTIMATE.start_main_~y~0#1|) .cse2 (< 18 |ULTIMATE.start_main_~k~0#1|) .cse3) (and .cse0 (= 7 |ULTIMATE.start_main_~c~0#1|) (= 7 |ULTIMATE.start_main_~y~0#1|) (< 6 |ULTIMATE.start_main_~k~0#1|) .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 11) (= |ULTIMATE.start_main_~y~0#1| 11) .cse1 .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 15) (= |ULTIMATE.start_main_~c~0#1| 15) .cse3) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 17) .cse1 (= |ULTIMATE.start_main_~c~0#1| 17) .cse2 .cse3) (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) .cse1 (= 2 |ULTIMATE.start_main_~c~0#1|) .cse2 .cse3) (and .cse0 (= 6 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= 6 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= 9 |ULTIMATE.start_main_~c~0#1|) .cse1 (= 9 |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 4) .cse1 (= |ULTIMATE.start_main_~c~0#1| 4) .cse2 .cse3) (and .cse0 (= 14 |ULTIMATE.start_main_~y~0#1|) .cse1 (= 14 |ULTIMATE.start_main_~c~0#1|) .cse2 .cse3) (and .cse4 .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) .cse3) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 12) .cse1 (= |ULTIMATE.start_main_~c~0#1| 12) .cse2 .cse3) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 13) .cse2 (= |ULTIMATE.start_main_~y~0#1| 13) .cse3) (and .cse0 (= 16 |ULTIMATE.start_main_~y~0#1|) (= 16 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3)))) [2022-11-18 20:59:33,883 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse0 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1) (* |ULTIMATE.start_main_~x~0#1| 4)))) (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) .cse0) (let ((.cse3 (< (+ |ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|)) (.cse2 (< (+ 2 |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|))) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1) (or .cse2 (not .cse3)) (or (not (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) .cse3) (or (< (+ 3 |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|) (not .cse2)) .cse0 (<= |ULTIMATE.start_main_~k~0#1| 20))) (and (<= |ULTIMATE.start_main_~k~0#1| 2) (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) .cse0) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))))) [2022-11-18 20:59:33,883 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-18 20:59:33,883 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-11-18 20:59:33,883 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 20:59:33,883 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 20:59:33,883 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 20:59:33,884 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse4 (<= 0 |ULTIMATE.start_main_~k~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse2 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5) (* |ULTIMATE.start_main_~x~0#1| 4))) (.cse3 (<= |ULTIMATE.start_main_~k~0#1| 20))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 18) (= |ULTIMATE.start_main_~y~0#1| 18) .cse1 .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 10) (= |ULTIMATE.start_main_~y~0#1| 10) .cse1 .cse2 .cse3) (and .cse0 (= 5 |ULTIMATE.start_main_~y~0#1|) (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|) .cse2 .cse3) (and .cse4 .cse0 (<= 20 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 (<= 19 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 19) (= 19 |ULTIMATE.start_main_~y~0#1|) .cse2 (< 18 |ULTIMATE.start_main_~k~0#1|) .cse3) (and .cse0 (= 7 |ULTIMATE.start_main_~c~0#1|) (= 7 |ULTIMATE.start_main_~y~0#1|) (< 6 |ULTIMATE.start_main_~k~0#1|) .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 11) (= |ULTIMATE.start_main_~y~0#1| 11) .cse1 .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 15) (= |ULTIMATE.start_main_~c~0#1| 15) .cse3) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 17) .cse1 (= |ULTIMATE.start_main_~c~0#1| 17) .cse2 .cse3) (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) .cse1 (= 2 |ULTIMATE.start_main_~c~0#1|) .cse2 .cse3) (and .cse0 (= 6 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= 6 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= 9 |ULTIMATE.start_main_~c~0#1|) .cse1 (= 9 |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 4) .cse1 (= |ULTIMATE.start_main_~c~0#1| 4) .cse2 .cse3) (and .cse0 (= 14 |ULTIMATE.start_main_~y~0#1|) .cse1 (= 14 |ULTIMATE.start_main_~c~0#1|) .cse2 .cse3) (and .cse4 .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) .cse3) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 12) .cse1 (= |ULTIMATE.start_main_~c~0#1| 12) .cse2 .cse3) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 13) .cse2 (= |ULTIMATE.start_main_~y~0#1| 13) .cse3) (and .cse0 (= 16 |ULTIMATE.start_main_~y~0#1|) (= 16 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3)))) [2022-11-18 20:59:33,884 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-11-18 20:59:33,884 INFO L902 garLoopResultBuilder]: At program point L39(lines 17 40) the Hoare annotation is: true [2022-11-18 20:59:33,884 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-11-18 20:59:33,884 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4)) [2022-11-18 20:59:33,885 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-11-18 20:59:33,885 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-18 20:59:33,885 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-11-18 20:59:33,885 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-11-18 20:59:33,885 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-11-18 20:59:33,886 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-11-18 20:59:33,889 INFO L444 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-11-18 20:59:33,892 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:59:33,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:59:33 BoogieIcfgContainer [2022-11-18 20:59:33,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:59:33,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:59:33,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:59:33,939 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:59:33,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:56" (3/4) ... [2022-11-18 20:59:33,943 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:59:33,951 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-18 20:59:33,967 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-18 20:59:33,968 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 20:59:33,968 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:59:33,968 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:59:34,008 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:59:34,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:59:34,009 INFO L158 Benchmark]: Toolchain (without parser) took 157938.37ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 89.7MB in the beginning and 114.0MB in the end (delta: -24.4MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-11-18 20:59:34,009 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory was 96.8MB in the beginning and 96.7MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:59:34,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.79ms. Allocated memory is still 125.8MB. Free memory was 89.7MB in the beginning and 99.9MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:59:34,010 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.75ms. Allocated memory is still 125.8MB. Free memory was 99.9MB in the beginning and 98.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:59:34,010 INFO L158 Benchmark]: Boogie Preprocessor took 25.73ms. Allocated memory is still 125.8MB. Free memory was 98.2MB in the beginning and 97.2MB in the end (delta: 964.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:59:34,011 INFO L158 Benchmark]: RCFGBuilder took 422.20ms. Allocated memory is still 125.8MB. Free memory was 97.2MB in the beginning and 87.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:59:34,011 INFO L158 Benchmark]: TraceAbstraction took 157074.36ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 86.2MB in the beginning and 116.1MB in the end (delta: -29.9MB). Peak memory consumption was 88.0MB. Max. memory is 16.1GB. [2022-11-18 20:59:34,012 INFO L158 Benchmark]: Witness Printer took 69.15ms. Allocated memory is still 167.8MB. Free memory was 116.1MB in the beginning and 114.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:59:34,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory was 96.8MB in the beginning and 96.7MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.79ms. Allocated memory is still 125.8MB. Free memory was 89.7MB in the beginning and 99.9MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.75ms. Allocated memory is still 125.8MB. Free memory was 99.9MB in the beginning and 98.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.73ms. Allocated memory is still 125.8MB. Free memory was 98.2MB in the beginning and 97.2MB in the end (delta: 964.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 422.20ms. Allocated memory is still 125.8MB. Free memory was 97.2MB in the beginning and 87.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 157074.36ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 86.2MB in the beginning and 116.1MB in the end (delta: -29.9MB). Peak memory consumption was 88.0MB. Max. memory is 16.1GB. * Witness Printer took 69.15ms. Allocated memory is still 167.8MB. Free memory was 116.1MB in the beginning and 114.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 156.9s, OverallIterations: 11, TraceHistogramMax: 41, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.1s, AutomataDifference: 29.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 708 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 703 mSDsluCounter, 2318 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1962 mSDsCounter, 545 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4170 IncrementalHoareTripleChecker+Invalid, 4715 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 545 mSolverCounterUnsat, 356 mSDtfsCounter, 4170 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1205 GetRequests, 877 SyntacticMatches, 1 SemanticMatches, 327 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2839 ImplicationChecksByTransitivity, 47.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=10, InterpolantAutomatonStates: 186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 63 PreInvPairs, 120 NumberOfFragments, 1881 HoareAnnotationTreeSize, 63 FomulaSimplifications, 216 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 6 FomulaSimplificationsInter, 6941 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 116.8s InterpolantComputationTime, 779 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1033 ConstructedInterpolants, 0 QuantifiedInterpolants, 6716 SizeOfPredicates, 33 NumberOfNonLiveVariables, 2092 ConjunctsInSsa, 384 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 7896/9578 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((cond == 1 && c == 18) && y == 18) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20) || (((((cond == 1 && c == 10) && y == 10) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && 5 == y) && 5 == c) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && c == 8) && y == 8) && 7 < k) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((0 <= k && cond == 1) && 20 <= c) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || ((((((cond == 1 && 19 <= c) && c <= 19) && 19 == y) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && 18 < k) && k <= 20)) || (((((cond == 1 && 7 == c) && 7 == y) && 6 < k) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && c == 11) && y == 11) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && c == 1) && y == 1) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && y == 15) && c == 15) && k <= 20)) || (((((cond == 1 && y == 17) && (k * y == y * y || c < k)) && c == 17) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && 2 == y) && (k * y == y * y || c < k)) && 2 == c) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && 6 == y) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && 6 == c) && k <= 20)) || (((((cond == 1 && 9 == c) && (k * y == y * y || c < k)) && 9 == y) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && y == 4) && (k * y == y * y || c < k)) && c == 4) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && 14 == y) && (k * y == y * y || c < k)) && 14 == c) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((0 <= k && cond == 1) && c == 0) && y == 0) && x == 0) && k <= 20)) || (((((cond == 1 && y == 12) && (k * y == y * y || c < k)) && c == 12) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && 3 == y) && 3 == c) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20)) || (((((cond == 1 && (k * y == y * y || c < k)) && c == 13) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && y == 13) && k <= 20)) || (((((cond == 1 && 16 == y) && 16 == c) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && k <= 20) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-18 20:59:34,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02597e9c-17c2-4825-ab94-d0e5dcd76719/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE