./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS --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 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 --- 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-4e7fbc6 [2022-11-23 02:16:42,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:16:42,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:16:42,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:16:42,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:16:42,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:16:42,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:16:42,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:16:42,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:16:42,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:16:42,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:16:42,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:16:42,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:16:42,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:16:42,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:16:42,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:16:42,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:16:42,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:16:42,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:16:42,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:16:42,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:16:42,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:16:42,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:16:42,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:16:42,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:16:42,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:16:42,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:16:42,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:16:42,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:16:42,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:16:42,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:16:42,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:16:42,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:16:42,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:16:42,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:16:42,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:16:42,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:16:42,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:16:42,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:16:42,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:16:42,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:16:42,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:16:42,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:16:42,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:16:42,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:16:42,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:16:42,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:16:42,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:16:42,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:16:42,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:16:42,477 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:16:42,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:16:42,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:16:42,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:16:42,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:16:42,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:16:42,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:16:42,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:16:42,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:16:42,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:16:42,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:16:42,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:16:42,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:16:42,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:16:42,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:16:42,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:16:42,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:16:42,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:16:42,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:16:42,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:16:42,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:16:42,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:16:42,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:16:42,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:16:42,483 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:16:42,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:16:42,484 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 [2022-11-23 02:16:42,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:16:42,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:16:42,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:16:42,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:16:42,825 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:16:42,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2022-11-23 02:16:46,254 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:16:46,482 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:16:46,482 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2022-11-23 02:16:46,495 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/data/acd4ce466/f36fe5041db5432bad4eb26191ca843c/FLAG67623012e [2022-11-23 02:16:46,520 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/data/acd4ce466/f36fe5041db5432bad4eb26191ca843c [2022-11-23 02:16:46,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:16:46,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:16:46,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:16:46,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:16:46,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:16:46,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc2265c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46, skipping insertion in model container [2022-11-23 02:16:46,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:16:46,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:16:46,786 WARN L237 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_e982998d-1a6b-4065-93d9-9b602c2e3d32/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c[458,471] [2022-11-23 02:16:46,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:16:46,832 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:16:46,854 WARN L237 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_e982998d-1a6b-4065-93d9-9b602c2e3d32/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c[458,471] [2022-11-23 02:16:46,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:16:46,880 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:16:46,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46 WrapperNode [2022-11-23 02:16:46,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:16:46,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:16:46,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:16:46,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:16:46,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,918 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2022-11-23 02:16:46,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:16:46,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:16:46,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:16:46,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:16:46,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:16:46,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:16:46,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:16:46,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:16:46,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (1/1) ... [2022-11-23 02:16:46,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:16:46,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:47,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:16:47,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:16:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:16:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:16:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:16:47,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:16:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 02:16:47,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 02:16:47,156 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:16:47,159 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:16:47,375 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:16:47,396 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:16:47,397 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:16:47,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:47 BoogieIcfgContainer [2022-11-23 02:16:47,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:16:47,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:16:47,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:16:47,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:16:47,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:46" (1/3) ... [2022-11-23 02:16:47,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540c3173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:47, skipping insertion in model container [2022-11-23 02:16:47,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:46" (2/3) ... [2022-11-23 02:16:47,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540c3173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:47, skipping insertion in model container [2022-11-23 02:16:47,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:47" (3/3) ... [2022-11-23 02:16:47,411 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound100.c [2022-11-23 02:16:47,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:16:47,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:16:47,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:16:47,505 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;@28e57f12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:16:47,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:16:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-11-23 02:16:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 02:16:47,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:47,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:47,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1819788390, now seen corresponding path program 1 times [2022-11-23 02:16:47,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:47,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87706846] [2022-11-23 02:16:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:47,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:47,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:47,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87706846] [2022-11-23 02:16:47,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 02:16:47,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981439256] [2022-11-23 02:16:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:47,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:47,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:47,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:16:47,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:16:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:47,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 02:16:47,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:16:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:47,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:16:47,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981439256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:47,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:47,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:16:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525175104] [2022-11-23 02:16:47,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:47,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:16:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:16:47,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:16:47,920 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-23 02:16:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:47,959 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2022-11-23 02:16:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:16:47,962 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2022-11-23 02:16:47,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:47,972 INFO L225 Difference]: With dead ends: 34 [2022-11-23 02:16:47,972 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 02:16:47,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:16:47,981 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 [2022-11-23 02:16:47,983 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] [2022-11-23 02:16:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 02:16:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 02:16:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2022-11-23 02:16:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-23 02:16:48,060 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2022-11-23 02:16:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:48,061 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-23 02:16:48,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-23 02:16:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-23 02:16:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 02:16:48,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:48,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:48,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:16:48,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 02:16:48,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:48,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:48,272 INFO L85 PathProgramCache]: Analyzing trace with hash 178441499, now seen corresponding path program 1 times [2022-11-23 02:16:48,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:48,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886411583] [2022-11-23 02:16:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:48,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:48,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:16:48,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494434184] [2022-11-23 02:16:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:48,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:48,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:48,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:16:48,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:16:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:48,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:16:48,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:16:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:48,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:16:48,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:48,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886411583] [2022-11-23 02:16:48,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:16:48,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494434184] [2022-11-23 02:16:48,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494434184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:48,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:48,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:16:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117468828] [2022-11-23 02:16:48,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:48,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:16:48,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:48,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:16:48,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:16:48,450 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-23 02:16:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:48,469 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-23 02:16:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:16:48,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-11-23 02:16:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:48,471 INFO L225 Difference]: With dead ends: 24 [2022-11-23 02:16:48,471 INFO L226 Difference]: Without dead ends: 16 [2022-11-23 02:16:48,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:16:48,473 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:48,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:16:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-23 02:16:48,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-23 02:16:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-11-23 02:16:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-23 02:16:48,480 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2022-11-23 02:16:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:48,481 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-23 02:16:48,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-23 02:16:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-23 02:16:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 02:16:48,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:48,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:48,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:16:48,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:48,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash 180228959, now seen corresponding path program 1 times [2022-11-23 02:16:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:48,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263085248] [2022-11-23 02:16:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:48,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:48,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:16:48,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555593137] [2022-11-23 02:16:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:48,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:48,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:48,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:16:48,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:16:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:48,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:16:48,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:16:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:48,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:16:48,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:48,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263085248] [2022-11-23 02:16:48,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:16:48,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555593137] [2022-11-23 02:16:48,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555593137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:48,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:48,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:16:48,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164510357] [2022-11-23 02:16:48,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:16:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:16:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:16:48,851 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-23 02:16:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:48,914 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-11-23 02:16:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:16:48,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2022-11-23 02:16:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:48,916 INFO L225 Difference]: With dead ends: 26 [2022-11-23 02:16:48,916 INFO L226 Difference]: Without dead ends: 22 [2022-11-23 02:16:48,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:16:48,918 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:48,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 48 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:16:48,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-23 02:16:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-23 02:16:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-11-23 02:16:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-23 02:16:48,929 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2022-11-23 02:16:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:48,929 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-23 02:16:48,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-23 02:16:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-23 02:16:48,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 02:16:48,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:48,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:48,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:16:49,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:49,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:49,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash 823572993, now seen corresponding path program 1 times [2022-11-23 02:16:49,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:49,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364227120] [2022-11-23 02:16:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:49,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:49,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:16:49,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795909536] [2022-11-23 02:16:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:49,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:49,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:49,169 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:16:49,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:16:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:49,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:16:49,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:16:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:49,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:16:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:49,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:49,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364227120] [2022-11-23 02:16:49,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:16:49,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795909536] [2022-11-23 02:16:49,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795909536] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:16:49,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:16:49,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-23 02:16:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283778383] [2022-11-23 02:16:49,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:16:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:16:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:16:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:16:49,362 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-11-23 02:16:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:49,479 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2022-11-23 02:16:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:16:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) Word has length 16 [2022-11-23 02:16:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:49,481 INFO L225 Difference]: With dead ends: 56 [2022-11-23 02:16:49,482 INFO L226 Difference]: Without dead ends: 48 [2022-11-23 02:16:49,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:16:49,485 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:49,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 90 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:16:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-23 02:16:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-11-23 02:16:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 02:16:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-11-23 02:16:49,499 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 16 [2022-11-23 02:16:49,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:49,500 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-11-23 02:16:49,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-11-23 02:16:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-11-23 02:16:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 02:16:49,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:49,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:49,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:16:49,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:49,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:49,712 INFO L85 PathProgramCache]: Analyzing trace with hash 825360453, now seen corresponding path program 1 times [2022-11-23 02:16:49,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:49,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181042673] [2022-11-23 02:16:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:49,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:49,727 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:16:49,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960657541] [2022-11-23 02:16:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:49,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:49,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:49,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:16:49,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:16:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:49,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 02:16:49,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:16:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:50,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:16:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:50,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181042673] [2022-11-23 02:16:50,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:16:50,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960657541] [2022-11-23 02:16:50,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960657541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:16:50,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:16:50,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2022-11-23 02:16:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784976683] [2022-11-23 02:16:50,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:16:50,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:16:50,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:16:50,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:16:50,434 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 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) [2022-11-23 02:16:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:50,638 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2022-11-23 02:16:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:16:50,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 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 [2022-11-23 02:16:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:50,640 INFO L225 Difference]: With dead ends: 58 [2022-11-23 02:16:50,640 INFO L226 Difference]: Without dead ends: 47 [2022-11-23 02:16:50,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:16:50,642 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:50,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 69 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:16:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-23 02:16:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2022-11-23 02:16:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 02:16:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-11-23 02:16:50,655 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 16 [2022-11-23 02:16:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:50,656 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-11-23 02:16:50,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 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) [2022-11-23 02:16:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-11-23 02:16:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 02:16:50,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:50,657 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:50,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:16:50,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:50,864 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1696898494, now seen corresponding path program 1 times [2022-11-23 02:16:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:50,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27965629] [2022-11-23 02:16:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:50,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:50,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:16:50,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903044512] [2022-11-23 02:16:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:50,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:50,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:50,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:16:50,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:16:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:50,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 02:16:50,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:16:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:16:51,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:17:23,522 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 [2022-11-23 02:17:41,618 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 [2022-11-23 02:17:49,694 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 [2022-11-23 02:17:51,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:51,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27965629] [2022-11-23 02:17:51,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:17:51,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903044512] [2022-11-23 02:17:51,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903044512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:17:51,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:17:51,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-23 02:17:51,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083829979] [2022-11-23 02:17:51,736 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:17:51,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:17:51,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:51,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:17:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=121, Unknown=5, NotChecked=72, Total=240 [2022-11-23 02:17:51,738 INFO L87 Difference]: Start difference. First operand 41 states and 44 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) [2022-11-23 02:17:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:17:51,932 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-11-23 02:17:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:17:51,935 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 [2022-11-23 02:17:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:17:51,936 INFO L225 Difference]: With dead ends: 46 [2022-11-23 02:17:51,936 INFO L226 Difference]: Without dead ends: 41 [2022-11-23 02:17:51,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=62, Invalid=185, Unknown=5, NotChecked=90, Total=342 [2022-11-23 02:17:51,938 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:17:51,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:17:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-23 02:17:51,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-23 02:17:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 02:17:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-11-23 02:17:51,951 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 22 [2022-11-23 02:17:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:17:51,951 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-11-23 02:17:51,951 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) [2022-11-23 02:17:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-11-23 02:17:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 02:17:51,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:17:51,953 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:51,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:17:52,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 02:17:52,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:17:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -47987544, now seen corresponding path program 2 times [2022-11-23 02:17:52,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:52,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992431032] [2022-11-23 02:17:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:52,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:52,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:17:52,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357287786] [2022-11-23 02:17:52,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:17:52,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:17:52,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:17:52,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:17:52,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:17:52,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:17:52,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:17:52,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 02:17:52,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:17:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:17:52,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:17:56,734 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 [2022-11-23 02:17:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:56,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992431032] [2022-11-23 02:17:56,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:17:56,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357287786] [2022-11-23 02:17:56,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357287786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:17:56,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:17:56,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-23 02:17:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580828831] [2022-11-23 02:17:56,745 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:17:56,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:17:56,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:17:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=148, Unknown=1, NotChecked=24, Total=210 [2022-11-23 02:17:56,746 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2022-11-23 02:17:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:17:56,930 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2022-11-23 02:17:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:17:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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 30 [2022-11-23 02:17:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:17:56,932 INFO L225 Difference]: With dead ends: 46 [2022-11-23 02:17:56,932 INFO L226 Difference]: Without dead ends: 41 [2022-11-23 02:17:56,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=56, Invalid=219, Unknown=1, NotChecked=30, Total=306 [2022-11-23 02:17:56,933 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:17:56,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 85 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:17:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-23 02:17:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-23 02:17:56,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 02:17:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-11-23 02:17:56,943 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 30 [2022-11-23 02:17:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:17:56,944 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-11-23 02:17:56,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2022-11-23 02:17:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-11-23 02:17:56,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 02:17:56,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:17:56,946 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:56,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 02:17:57,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 02:17:57,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:17:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:57,153 INFO L85 PathProgramCache]: Analyzing trace with hash -584163058, now seen corresponding path program 3 times [2022-11-23 02:17:57,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:57,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620287719] [2022-11-23 02:17:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:57,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:57,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:17:57,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694245117] [2022-11-23 02:17:57,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:17:57,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:17:57,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:17:57,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:17:57,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:17:57,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 02:17:57,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:17:57,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 02:17:57,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:17:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 02:17:57,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:18:14,230 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 [2022-11-23 02:18:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:14,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620287719] [2022-11-23 02:18:14,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:18:14,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694245117] [2022-11-23 02:18:14,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694245117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:18:14,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:18:14,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-23 02:18:14,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483514795] [2022-11-23 02:18:14,234 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:18:14,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:18:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:14,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:18:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=281, Unknown=2, NotChecked=34, Total=380 [2022-11-23 02:18:14,235 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 02:18:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:14,545 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2022-11-23 02:18:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:18:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2022-11-23 02:18:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:14,547 INFO L225 Difference]: With dead ends: 48 [2022-11-23 02:18:14,547 INFO L226 Difference]: Without dead ends: 43 [2022-11-23 02:18:14,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=87, Invalid=377, Unknown=2, NotChecked=40, Total=506 [2022-11-23 02:18:14,549 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:14,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 138 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:18:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-23 02:18:14,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-23 02:18:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 02:18:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-11-23 02:18:14,562 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2022-11-23 02:18:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:14,563 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-11-23 02:18:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 02:18:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-11-23 02:18:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 02:18:14,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:14,564 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:14,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:18:14,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:14,772 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2045303987, now seen corresponding path program 2 times [2022-11-23 02:18:14,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:14,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306060049] [2022-11-23 02:18:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:14,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:14,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:18:14,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171767984] [2022-11-23 02:18:14,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:18:14,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:14,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:14,798 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:14,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 02:18:14,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:18:14,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:18:14,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 02:18:14,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:15,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:18:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:18:15,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:15,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306060049] [2022-11-23 02:18:15,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:18:15,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171767984] [2022-11-23 02:18:15,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171767984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:18:15,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:18:15,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-23 02:18:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175319209] [2022-11-23 02:18:15,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:18:15,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:18:15,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:15,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:18:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:18:15,167 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-23 02:18:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:15,436 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2022-11-23 02:18:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 02:18:15,437 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2022-11-23 02:18:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:15,439 INFO L225 Difference]: With dead ends: 119 [2022-11-23 02:18:15,439 INFO L226 Difference]: Without dead ends: 114 [2022-11-23 02:18:15,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-11-23 02:18:15,441 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 91 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:15,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 129 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:18:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-23 02:18:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2022-11-23 02:18:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 02:18:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-11-23 02:18:15,464 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 40 [2022-11-23 02:18:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:15,464 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-23 02:18:15,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-23 02:18:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2022-11-23 02:18:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 02:18:15,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:15,466 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:15,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:18:15,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 02:18:15,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash -635357324, now seen corresponding path program 4 times [2022-11-23 02:18:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:15,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610613979] [2022-11-23 02:18:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:15,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:15,682 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:18:15,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442785089] [2022-11-23 02:18:15,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:18:15,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:15,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:15,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:15,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 02:18:15,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:18:15,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:18:15,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 02:18:15,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 44 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 02:18:16,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:18:20,381 WARN L837 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) |c_ULTIMATE.start_main_~k~0#1|)) (not (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 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 [2022-11-23 02:18:36,476 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_16| Int)) (or (= (+ |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_16| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_16|)) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| 2) 1)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| 3)) 4) 0)))) is different from true [2022-11-23 02:18:54,554 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_16| Int)) (or (= (+ |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_16| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_16|)) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| 2) 1)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_27| 3)) 4) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-23 02:19:02,625 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~c~0#1| 2) |c_ULTIMATE.start_main_~k~0#1|) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 2 |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_~y~0#1| 4) 4)) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 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 [2022-11-23 02:19:12,717 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~c~0#1| 3) |c_ULTIMATE.start_main_~k~0#1|) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 2) |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_~y~0#1| 6) 9) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 3 |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 [2022-11-23 02:19:22,818 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (< (+ |c_ULTIMATE.start_main_~c~0#1| 4) |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| (+ |c_ULTIMATE.start_main_~c~0#1| 3)) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 16 (* |c_ULTIMATE.start_main_~y~0#1| 8)) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |c_ULTIMATE.start_main_~y~0#1| |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 [2022-11-23 02:19:24,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610613979] [2022-11-23 02:19:24,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:19:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442785089] [2022-11-23 02:19:24,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442785089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:24,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:24,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-11-23 02:19:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782004061] [2022-11-23 02:19:24,850 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:19:24,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:19:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:19:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=204, Unknown=6, NotChecked=198, Total=462 [2022-11-23 02:19:24,851 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 02:19:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:25,124 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2022-11-23 02:19:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:19:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 46 [2022-11-23 02:19:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:25,126 INFO L225 Difference]: With dead ends: 94 [2022-11-23 02:19:25,127 INFO L226 Difference]: Without dead ends: 89 [2022-11-23 02:19:25,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=73, Invalid=287, Unknown=6, NotChecked=234, Total=600 [2022-11-23 02:19:25,128 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:25,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 159 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:19:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-23 02:19:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-23 02:19:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 02:19:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2022-11-23 02:19:25,147 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 46 [2022-11-23 02:19:25,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:25,147 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2022-11-23 02:19:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 02:19:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2022-11-23 02:19:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 02:19:25,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:25,149 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:25,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:25,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:25,356 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:25,358 INFO L85 PathProgramCache]: Analyzing trace with hash 220350426, now seen corresponding path program 5 times [2022-11-23 02:19:25,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:25,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308881016] [2022-11-23 02:19:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:25,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:25,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:19:25,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250234833] [2022-11-23 02:19:25,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:19:25,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:25,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:25,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:25,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 02:19:25,524 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-23 02:19:25,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:19:25,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 02:19:25,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 70 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 02:19:25,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:19:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:26,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308881016] [2022-11-23 02:19:26,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:19:26,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250234833] [2022-11-23 02:19:26,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250234833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:26,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:26,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-23 02:19:26,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460456381] [2022-11-23 02:19:26,063 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:19:26,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:19:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:26,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:19:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:19:26,065 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 02:19:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:26,416 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2022-11-23 02:19:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:19:26,417 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 54 [2022-11-23 02:19:26,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:26,419 INFO L225 Difference]: With dead ends: 94 [2022-11-23 02:19:26,419 INFO L226 Difference]: Without dead ends: 89 [2022-11-23 02:19:26,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:19:26,420 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:26,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 197 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 02:19:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-23 02:19:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-23 02:19:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 02:19:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2022-11-23 02:19:26,438 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 54 [2022-11-23 02:19:26,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:26,439 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2022-11-23 02:19:26,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 02:19:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2022-11-23 02:19:26,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 02:19:26,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:26,441 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:26,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:26,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:26,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:26,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash 156734016, now seen corresponding path program 6 times [2022-11-23 02:19:26,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:26,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072646615] [2022-11-23 02:19:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:26,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:26,663 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:19:26,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712674180] [2022-11-23 02:19:26,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:19:26,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:26,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:26,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:26,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 02:19:26,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-23 02:19:26,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:19:26,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-23 02:19:26,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 16 proven. 100 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-23 02:19:27,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:19:27,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:27,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072646615] [2022-11-23 02:19:27,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:19:27,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712674180] [2022-11-23 02:19:27,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712674180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:27,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:27,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-11-23 02:19:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690641139] [2022-11-23 02:19:27,429 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:19:27,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:19:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:19:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:19:27,430 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 02:19:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:27,807 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-11-23 02:19:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:19:27,808 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 62 [2022-11-23 02:19:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:27,809 INFO L225 Difference]: With dead ends: 94 [2022-11-23 02:19:27,810 INFO L226 Difference]: Without dead ends: 89 [2022-11-23 02:19:27,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:19:27,811 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 7 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:27,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 221 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 02:19:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-23 02:19:27,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-23 02:19:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 67 states have internal predecessors, (71), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 02:19:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2022-11-23 02:19:27,828 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 62 [2022-11-23 02:19:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:27,828 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2022-11-23 02:19:27,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 02:19:27,829 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2022-11-23 02:19:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 02:19:27,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:27,831 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:27,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:28,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 02:19:28,043 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:28,044 INFO L85 PathProgramCache]: Analyzing trace with hash -605612378, now seen corresponding path program 7 times [2022-11-23 02:19:28,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:28,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048519401] [2022-11-23 02:19:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:28,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:28,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:19:28,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317611504] [2022-11-23 02:19:28,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:19:28,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:28,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:28,058 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:28,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 02:19:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:28,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-23 02:19:28,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 36 proven. 113 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-23 02:19:28,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:19:32,733 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 [2022-11-23 02:19:52,907 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_33| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_33|))))) is different from true [2022-11-23 02:20:10,977 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_33| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_33|)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-23 02:21:27,543 WARN L837 $PredicateComparison]: unable to prove that (or (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 3) |c_ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 4) |c_ULTIMATE.start_main_~k~0#1|) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 16 (* |c_ULTIMATE.start_main_~y~0#1| 8)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 4 |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 [2022-11-23 02:21:37,620 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~c~0#1| 5) |c_ULTIMATE.start_main_~k~0#1|) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 4) |c_ULTIMATE.start_main_~k~0#1|)) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 25) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 5 |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 [2022-11-23 02:21:47,703 WARN L837 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 12) 36) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 6 |c_ULTIMATE.start_main_~k~0#1|))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 6) |c_ULTIMATE.start_main_~k~0#1|) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 5) |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 [2022-11-23 02:21:57,786 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (<= |ULTIMATE.start_main_~k~0#1| (+ |c_ULTIMATE.start_main_~c~0#1| 6)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 7) |ULTIMATE.start_main_~k~0#1|) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 49 (* |c_ULTIMATE.start_main_~y~0#1| 14)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|) (* 7 |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 [2022-11-23 02:21:59,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:59,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048519401] [2022-11-23 02:21:59,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:21:59,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317611504] [2022-11-23 02:21:59,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317611504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:21:59,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:21:59,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-23 02:21:59,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864153234] [2022-11-23 02:21:59,815 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:21:59,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 02:21:59,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:59,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 02:21:59,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=348, Unknown=14, NotChecked=308, Total=756 [2022-11-23 02:21:59,817 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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) [2022-11-23 02:22:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:00,261 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-11-23 02:22:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:22:00,261 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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 70 [2022-11-23 02:22:00,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:00,262 INFO L225 Difference]: With dead ends: 94 [2022-11-23 02:22:00,262 INFO L226 Difference]: Without dead ends: 89 [2022-11-23 02:22:00,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 58.6s TimeCoverageRelationStatistics Valid=108, Invalid=458, Unknown=14, NotChecked=350, Total=930 [2022-11-23 02:22:00,264 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:00,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 285 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:22:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-23 02:22:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-23 02:22:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 02:22:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2022-11-23 02:22:00,278 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 70 [2022-11-23 02:22:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:00,278 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2022-11-23 02:22:00,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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) [2022-11-23 02:22:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2022-11-23 02:22:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 02:22:00,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:00,280 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:00,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-23 02:22:00,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 02:22:00,486 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash 200725772, now seen corresponding path program 8 times [2022-11-23 02:22:00,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:00,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446799930] [2022-11-23 02:22:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:00,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:00,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:22:00,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800134628] [2022-11-23 02:22:00,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:22:00,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:00,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:22:00,507 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:22:00,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 02:22:00,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:22:00,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:22:00,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 02:22:00,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:22:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 38 proven. 148 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-23 02:22:01,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:22:05,891 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 [2022-11-23 02:22:05,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:22:05,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446799930] [2022-11-23 02:22:05,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:22:05,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800134628] [2022-11-23 02:22:05,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800134628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:22:05,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:22:05,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-23 02:22:05,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101168171] [2022-11-23 02:22:05,894 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:22:05,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 02:22:05,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:22:05,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 02:22:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=328, Unknown=1, NotChecked=36, Total=420 [2022-11-23 02:22:05,896 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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) [2022-11-23 02:22:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:06,391 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2022-11-23 02:22:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:22:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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 78 [2022-11-23 02:22:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:06,393 INFO L225 Difference]: With dead ends: 94 [2022-11-23 02:22:06,393 INFO L226 Difference]: Without dead ends: 89 [2022-11-23 02:22:06,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=74, Invalid=435, Unknown=1, NotChecked=42, Total=552 [2022-11-23 02:22:06,394 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:06,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 335 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:22:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-23 02:22:06,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-23 02:22:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 02:22:06,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-11-23 02:22:06,408 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 78 [2022-11-23 02:22:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:06,409 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-11-23 02:22:06,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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) [2022-11-23 02:22:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-11-23 02:22:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 02:22:06,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:06,411 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:06,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-23 02:22:06,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:06,618 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:06,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:06,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1699951246, now seen corresponding path program 9 times [2022-11-23 02:22:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:06,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42558029] [2022-11-23 02:22:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:06,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:06,629 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:22:06,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158434810] [2022-11-23 02:22:06,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:22:06,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:06,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:22:06,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:22:06,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 02:22:06,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-23 02:22:06,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:22:06,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-23 02:22:06,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:22:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 28 proven. 199 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-23 02:22:07,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:22:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:22:07,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42558029] [2022-11-23 02:22:07,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:22:07,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158434810] [2022-11-23 02:22:07,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158434810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:22:07,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:22:07,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-11-23 02:22:07,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688893575] [2022-11-23 02:22:07,471 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:22:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 02:22:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:22:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 02:22:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:22:07,473 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 02:22:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:07,914 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2022-11-23 02:22:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:22:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 86 [2022-11-23 02:22:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:07,916 INFO L225 Difference]: With dead ends: 96 [2022-11-23 02:22:07,916 INFO L226 Difference]: Without dead ends: 91 [2022-11-23 02:22:07,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-11-23 02:22:07,917 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:07,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 365 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:22:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-23 02:22:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-23 02:22:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 02:22:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2022-11-23 02:22:07,936 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2022-11-23 02:22:07,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:07,936 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2022-11-23 02:22:07,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 02:22:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2022-11-23 02:22:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 02:22:07,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:07,940 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:07,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 02:22:08,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:08,148 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash -780287977, now seen corresponding path program 3 times [2022-11-23 02:22:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:08,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688094886] [2022-11-23 02:22:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:08,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:22:08,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073367507] [2022-11-23 02:22:08,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:22:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:22:08,167 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:22:08,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 02:22:08,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-23 02:22:08,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:22:08,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 02:22:08,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:22:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:22:08,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:22:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-23 02:22:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:22:09,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688094886] [2022-11-23 02:22:09,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:22:09,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073367507] [2022-11-23 02:22:09,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073367507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:22:09,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:22:09,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-23 02:22:09,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342700644] [2022-11-23 02:22:09,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:22:09,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-23 02:22:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:22:09,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-23 02:22:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2022-11-23 02:22:09,061 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-23 02:22:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:09,652 INFO L93 Difference]: Finished difference Result 245 states and 257 transitions. [2022-11-23 02:22:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-23 02:22:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2022-11-23 02:22:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:09,655 INFO L225 Difference]: With dead ends: 245 [2022-11-23 02:22:09,655 INFO L226 Difference]: Without dead ends: 240 [2022-11-23 02:22:09,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=796, Invalid=1366, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 02:22:09,656 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 226 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:09,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 214 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:22:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-23 02:22:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 185. [2022-11-23 02:22:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 139 states have internal predecessors, (152), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 02:22:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 197 transitions. [2022-11-23 02:22:09,680 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 197 transitions. Word has length 88 [2022-11-23 02:22:09,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:09,680 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 197 transitions. [2022-11-23 02:22:09,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-23 02:22:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 197 transitions. [2022-11-23 02:22:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 02:22:09,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:09,682 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:09,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-23 02:22:09,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 02:22:09,888 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash 53411800, now seen corresponding path program 10 times [2022-11-23 02:22:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:09,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918350358] [2022-11-23 02:22:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:09,895 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:22:09,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349155234] [2022-11-23 02:22:09,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:22:09,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:09,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:22:09,897 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:22:09,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 02:22:10,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:22:10,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:22:10,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-23 02:22:10,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:22:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 24 proven. 248 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:22:11,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:22:11,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:22:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918350358] [2022-11-23 02:22:11,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:22:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349155234] [2022-11-23 02:22:11,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349155234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:22:11,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:22:11,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-23 02:22:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434557686] [2022-11-23 02:22:11,348 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:22:11,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 02:22:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:22:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 02:22:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-23 02:22:11,349 INFO L87 Difference]: Start difference. First operand 185 states and 197 transitions. Second operand has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 02:22:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:11,915 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2022-11-23 02:22:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 02:22:11,916 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 94 [2022-11-23 02:22:11,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:11,918 INFO L225 Difference]: With dead ends: 190 [2022-11-23 02:22:11,918 INFO L226 Difference]: Without dead ends: 185 [2022-11-23 02:22:11,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-11-23 02:22:11,919 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:11,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 421 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:22:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-23 02:22:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-23 02:22:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.0863309352517985) internal successors, (151), 139 states have internal predecessors, (151), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 02:22:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 196 transitions. [2022-11-23 02:22:11,940 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 196 transitions. Word has length 94 [2022-11-23 02:22:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:11,941 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 196 transitions. [2022-11-23 02:22:11,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 02:22:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 196 transitions. [2022-11-23 02:22:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 02:22:11,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:11,943 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:11,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 02:22:12,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 02:22:12,151 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash 983788606, now seen corresponding path program 11 times [2022-11-23 02:22:12,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:12,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956806646] [2022-11-23 02:22:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:12,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:22:12,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815953954] [2022-11-23 02:22:12,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:22:12,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:12,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:22:12,163 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:22:12,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 02:22:12,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-11-23 02:22:12,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:22:12,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-23 02:22:12,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:22:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 50 proven. 271 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-23 02:22:12,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:22:13,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:22:13,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956806646] [2022-11-23 02:22:13,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:22:13,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815953954] [2022-11-23 02:22:13,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815953954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:22:13,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:22:13,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-23 02:22:13,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948336057] [2022-11-23 02:22:13,017 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:22:13,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 02:22:13,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:22:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 02:22:13,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-23 02:22:13,019 INFO L87 Difference]: Start difference. First operand 185 states and 196 transitions. Second operand has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 02:22:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:13,670 INFO L93 Difference]: Finished difference Result 190 states and 200 transitions. [2022-11-23 02:22:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 02:22:13,671 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 102 [2022-11-23 02:22:13,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:13,672 INFO L225 Difference]: With dead ends: 190 [2022-11-23 02:22:13,673 INFO L226 Difference]: Without dead ends: 185 [2022-11-23 02:22:13,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-11-23 02:22:13,674 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:13,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 509 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 02:22:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-23 02:22:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-23 02:22:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.079136690647482) internal successors, (150), 139 states have internal predecessors, (150), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 02:22:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 195 transitions. [2022-11-23 02:22:13,692 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 195 transitions. Word has length 102 [2022-11-23 02:22:13,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:13,693 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 195 transitions. [2022-11-23 02:22:13,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 02:22:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 195 transitions. [2022-11-23 02:22:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 02:22:13,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:13,695 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:13,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 02:22:13,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 02:22:13,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:13,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1339026780, now seen corresponding path program 12 times [2022-11-23 02:22:13,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:13,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073899998] [2022-11-23 02:22:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:13,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:13,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:22:13,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987378145] [2022-11-23 02:22:13,913 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:22:13,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:13,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:22:13,914 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:22:13,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 02:22:14,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-11-23 02:22:14,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:22:14,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-23 02:22:14,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:22:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 49 proven. 325 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-23 02:22:14,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:22:14,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:22:14,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073899998] [2022-11-23 02:22:14,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:22:14,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987378145] [2022-11-23 02:22:14,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987378145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:22:14,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:22:14,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-23 02:22:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066676154] [2022-11-23 02:22:14,889 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:22:14,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 02:22:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:22:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 02:22:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-11-23 02:22:14,891 INFO L87 Difference]: Start difference. First operand 185 states and 195 transitions. Second operand has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 02:22:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:15,542 INFO L93 Difference]: Finished difference Result 190 states and 199 transitions. [2022-11-23 02:22:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 02:22:15,543 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 110 [2022-11-23 02:22:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:15,544 INFO L225 Difference]: With dead ends: 190 [2022-11-23 02:22:15,544 INFO L226 Difference]: Without dead ends: 185 [2022-11-23 02:22:15,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-11-23 02:22:15,546 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:15,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 545 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 02:22:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-23 02:22:15,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-23 02:22:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.0719424460431655) internal successors, (149), 139 states have internal predecessors, (149), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 02:22:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 194 transitions. [2022-11-23 02:22:15,565 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 194 transitions. Word has length 110 [2022-11-23 02:22:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:15,566 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 194 transitions. [2022-11-23 02:22:15,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 02:22:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 194 transitions. [2022-11-23 02:22:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 02:22:15,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:15,568 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:15,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 02:22:15,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:15,775 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1291514634, now seen corresponding path program 13 times [2022-11-23 02:22:15,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:15,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532900667] [2022-11-23 02:22:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:15,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:22:15,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131715013] [2022-11-23 02:22:15,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:22:15,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:15,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:22:15,804 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:22:15,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 02:22:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:15,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-23 02:22:15,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:22:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 66 proven. 365 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-23 02:22:16,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:22:54,990 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_69| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| 3)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_69|))))) is different from true [2022-11-23 02:23:13,040 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_69| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| 3)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_143| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_69|)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-23 02:23:57,371 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~c~0#1| 3) |c_ULTIMATE.start_main_~k~0#1|) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 2) |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_~y~0#1| 6) 9) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 3 |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 [2022-11-23 02:24:07,450 WARN L837 $PredicateComparison]: unable to prove that (or (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 3) |c_ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 4) |c_ULTIMATE.start_main_~k~0#1|) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 16 (* |c_ULTIMATE.start_main_~y~0#1| 8)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 4 |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 [2022-11-23 02:24:58,073 WARN L837 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 12) 36) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 6 |c_ULTIMATE.start_main_~k~0#1|))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 6) |c_ULTIMATE.start_main_~k~0#1|) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 5) |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 [2022-11-23 02:26:39,940 WARN L837 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 20) 100) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 10 |c_ULTIMATE.start_main_~k~0#1|))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 10) |c_ULTIMATE.start_main_~k~0#1|) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 9) |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 [2022-11-23 02:27:26,205 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~c~0#1| 12) |c_ULTIMATE.start_main_~k~0#1|) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| 24) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 144) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 12 |c_ULTIMATE.start_main_~k~0#1|))) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 11) |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 [2022-11-23 02:27:36,303 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (<= |ULTIMATE.start_main_~k~0#1| (+ |c_ULTIMATE.start_main_~c~0#1| 12)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 13) |ULTIMATE.start_main_~k~0#1|) (= (+ 169 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 26)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|) (* |ULTIMATE.start_main_~k~0#1| 13))))) (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 [2022-11-23 02:27:38,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:38,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532900667] [2022-11-23 02:27:38,328 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:27:38,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131715013] [2022-11-23 02:27:38,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131715013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:27:38,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:27:38,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-23 02:27:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252250149] [2022-11-23 02:27:38,329 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:27:38,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 02:27:38,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:38,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 02:27:38,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=809, Unknown=32, NotChecked=536, Total=1560 [2022-11-23 02:27:38,331 INFO L87 Difference]: Start difference. First operand 185 states and 194 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 02:27:47,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:27:47,124 INFO L93 Difference]: Finished difference Result 190 states and 198 transitions. [2022-11-23 02:27:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 02:27:47,125 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 118 [2022-11-23 02:27:47,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:27:47,126 INFO L225 Difference]: With dead ends: 190 [2022-11-23 02:27:47,126 INFO L226 Difference]: Without dead ends: 185 [2022-11-23 02:27:47,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 192.5s TimeCoverageRelationStatistics Valid=203, Invalid=983, Unknown=36, NotChecked=584, Total=1806 [2022-11-23 02:27:47,128 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:27:47,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 613 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 02:27:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-23 02:27:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-23 02:27:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.064748201438849) internal successors, (148), 139 states have internal predecessors, (148), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 02:27:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 193 transitions. [2022-11-23 02:27:47,150 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 193 transitions. Word has length 118 [2022-11-23 02:27:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:27:47,151 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 193 transitions. [2022-11-23 02:27:47,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 02:27:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 193 transitions. [2022-11-23 02:27:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 02:27:47,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:27:47,153 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1] [2022-11-23 02:27:47,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-23 02:27:47,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:27:47,360 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:27:47,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1948913008, now seen corresponding path program 14 times [2022-11-23 02:27:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:47,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486644646] [2022-11-23 02:27:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:47,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:27:47,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163938367] [2022-11-23 02:27:47,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:27:47,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:27:47,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:27:47,372 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:27:47,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 02:27:47,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:27:47,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:27:47,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-23 02:27:47,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:27:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 68 proven. 424 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-11-23 02:27:48,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:27:52,501 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 [2022-11-23 02:27:52,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:52,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486644646] [2022-11-23 02:27:52,504 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:27:52,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163938367] [2022-11-23 02:27:52,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163938367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:27:52,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:27:52,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-23 02:27:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248276864] [2022-11-23 02:27:52,505 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 02:27:52,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 02:27:52,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 02:27:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=580, Unknown=1, NotChecked=48, Total=702 [2022-11-23 02:27:52,506 INFO L87 Difference]: Start difference. First operand 185 states and 193 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 02:27:53,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:27:53,404 INFO L93 Difference]: Finished difference Result 190 states and 197 transitions. [2022-11-23 02:27:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 02:27:53,404 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 126 [2022-11-23 02:27:53,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:27:53,406 INFO L225 Difference]: With dead ends: 190 [2022-11-23 02:27:53,406 INFO L226 Difference]: Without dead ends: 185 [2022-11-23 02:27:53,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=92, Invalid=723, Unknown=1, NotChecked=54, Total=870 [2022-11-23 02:27:53,407 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:27:53,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 719 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 02:27:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-23 02:27:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-23 02:27:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.0575539568345325) internal successors, (147), 139 states have internal predecessors, (147), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 02:27:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 192 transitions. [2022-11-23 02:27:53,433 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 192 transitions. Word has length 126 [2022-11-23 02:27:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:27:53,433 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 192 transitions. [2022-11-23 02:27:53,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 02:27:53,434 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 192 transitions. [2022-11-23 02:27:53,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:27:53,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:27:53,436 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1] [2022-11-23 02:27:53,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-23 02:27:53,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:27:53,643 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:27:53,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 48456150, now seen corresponding path program 15 times [2022-11-23 02:27:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487485464] [2022-11-23 02:27:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:53,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:53,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:27:53,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759126123] [2022-11-23 02:27:53,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:27:53,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:27:53,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:27:53,654 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:27:53,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982998d-1a6b-4065-93d9-9b602c2e3d32/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 02:27:54,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-23 02:27:54,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:27:54,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-23 02:27:54,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:27:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 58 proven. 499 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-23 02:27:54,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:28:41,933 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_107| Int)) (or (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_107|) (* 6 |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_107|)) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|) 36 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| 12))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| 3)) 4) 0)))) is different from true [2022-11-23 02:28:59,984 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_107| Int)) (or (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_107|) (* 6 |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_107|)) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|) 36 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| 12))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| 3)) 4) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-23 02:30:20,720 WARN L837 $PredicateComparison]: unable to prove that (or (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 8) |c_ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 9) |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_~y~0#1| 18) 81) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 9 |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 [2022-11-23 02:30:30,807 WARN L837 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 20) 100) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 10 |c_ULTIMATE.start_main_~k~0#1|))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 10) |c_ULTIMATE.start_main_~k~0#1|) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 9) |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 [2022-11-23 02:31:09,044 WARN L837 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~c~0#1| 12) |c_ULTIMATE.start_main_~k~0#1|) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| 24) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 144) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 12 |c_ULTIMATE.start_main_~k~0#1|))) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 11) |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