./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8 --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 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:45:26,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:45:26,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:45:26,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:45:26,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:45:26,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:45:26,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:45:26,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:45:26,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:45:26,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:45:26,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:45:26,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:45:26,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:45:26,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:45:26,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:45:26,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:45:26,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:45:26,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:45:26,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:45:26,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:45:26,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:45:26,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:45:26,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:45:26,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:45:26,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:45:26,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:45:26,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:45:26,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:45:26,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:45:26,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:45:26,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:45:26,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:45:26,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:45:26,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:45:26,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:45:26,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:45:26,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:45:26,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:45:26,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:45:26,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:45:26,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:45:26,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:45:26,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:45:26,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:45:26,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:45:26,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:45:26,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:45:26,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:45:26,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:45:26,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:45:26,366 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:45:26,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:45:26,368 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:45:26,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:45:26,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:45:26,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:45:26,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:45:26,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:45:26,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:45:26,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:45:26,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:45:26,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:45:26,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:45:26,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:45:26,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:45:26,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:45:26,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:26,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:45:26,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:45:26,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:45:26,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:45:26,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:45:26,373 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:45:26,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:45:26,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:45:26,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a [2022-11-16 11:45:26,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:45:26,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:45:26,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:45:26,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:45:26,637 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:45:26,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-11-16 11:45:26,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/data/9b3b409b0/599c2cae0bd040c690d5a29dc3db5c99/FLAG67157ef8e [2022-11-16 11:45:27,202 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:45:27,203 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-11-16 11:45:27,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/data/9b3b409b0/599c2cae0bd040c690d5a29dc3db5c99/FLAG67157ef8e [2022-11-16 11:45:27,586 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/data/9b3b409b0/599c2cae0bd040c690d5a29dc3db5c99 [2022-11-16 11:45:27,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:45:27,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:45:27,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:27,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:45:27,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:45:27,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:27,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ef2a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27, skipping insertion in model container [2022-11-16 11:45:27,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:27,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:45:27,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:45:27,897 WARN L229 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_df15836d-b8c6-4a8a-9288-9fc73bf92190/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2022-11-16 11:45:27,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:27,930 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:45:27,943 WARN L229 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_df15836d-b8c6-4a8a-9288-9fc73bf92190/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2022-11-16 11:45:27,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:27,969 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:45:27,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27 WrapperNode [2022-11-16 11:45:27,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:27,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:27,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:45:27,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:45:27,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:27,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,024 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-11-16 11:45:28,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:28,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:45:28,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:45:28,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:45:28,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:45:28,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:45:28,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:45:28,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:45:28,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (1/1) ... [2022-11-16 11:45:28,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:28,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:28,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:45:28,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:45:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:45:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:45:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:45:28,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:45:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:45:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:45:28,229 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:45:28,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:45:28,390 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:45:28,396 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:45:28,397 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:45:28,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:28 BoogieIcfgContainer [2022-11-16 11:45:28,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:45:28,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:45:28,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:45:28,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:45:28,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:45:27" (1/3) ... [2022-11-16 11:45:28,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491a3805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:28, skipping insertion in model container [2022-11-16 11:45:28,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:27" (2/3) ... [2022-11-16 11:45:28,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491a3805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:28, skipping insertion in model container [2022-11-16 11:45:28,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:28" (3/3) ... [2022-11-16 11:45:28,419 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2022-11-16 11:45:28,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:45:28,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:45:28,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:45:28,507 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;@1170ab2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:45:28,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:45:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:45:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:45:28,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:28,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:28,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2022-11-16 11:45:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:28,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445652776] [2022-11-16 11:45:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:28,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:28,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445652776] [2022-11-16 11:45:28,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445652776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:28,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:28,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:45:28,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695694130] [2022-11-16 11:45:28,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:45:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:45:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:45:28,739 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:28,784 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2022-11-16 11:45:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:45:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:45:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:28,803 INFO L225 Difference]: With dead ends: 51 [2022-11-16 11:45:28,803 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 11:45:28,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:45:28,813 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2022-11-16 11:45:28,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:45:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 11:45:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-16 11:45:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:45:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-11-16 11:45:28,872 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2022-11-16 11:45:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:28,873 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-11-16 11:45:28,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-11-16 11:45:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:45:28,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:28,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:28,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:45:28,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2022-11-16 11:45:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:28,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916231858] [2022-11-16 11:45:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:28,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:29,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:29,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916231858] [2022-11-16 11:45:29,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916231858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:29,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:29,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:45:29,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365683358] [2022-11-16 11:45:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:29,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:45:29,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:29,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:45:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:45:29,256 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:29,389 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-11-16 11:45:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:45:29,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:45:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:29,391 INFO L225 Difference]: With dead ends: 29 [2022-11-16 11:45:29,391 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 11:45:29,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:45:29,393 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:29,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:45:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 11:45:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 11:45:29,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-16 11:45:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-11-16 11:45:29,430 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2022-11-16 11:45:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:29,430 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-11-16 11:45:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-11-16 11:45:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:45:29,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:29,432 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:29,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:45:29,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2022-11-16 11:45:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:29,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465839163] [2022-11-16 11:45:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:29,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:29,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849006261] [2022-11-16 11:45:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:29,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:29,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:29,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:45:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:29,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:45:29,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:29,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:29,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:29,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465839163] [2022-11-16 11:45:29,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:29,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849006261] [2022-11-16 11:45:29,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849006261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:29,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:29,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 11:45:29,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363924711] [2022-11-16 11:45:29,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:29,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:45:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:29,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:45:29,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:45:29,979 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-11-16 11:45:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:30,432 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-11-16 11:45:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:45:30,434 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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 14 [2022-11-16 11:45:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:30,437 INFO L225 Difference]: With dead ends: 52 [2022-11-16 11:45:30,437 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 11:45:30,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:30,439 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:30,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:45:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 11:45:30,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-11-16 11:45:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:45:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2022-11-16 11:45:30,480 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 14 [2022-11-16 11:45:30,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:30,481 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2022-11-16 11:45:30,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-11-16 11:45:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2022-11-16 11:45:30,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:45:30,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:30,483 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:30,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:45:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:30,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2022-11-16 11:45:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:30,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523806613] [2022-11-16 11:45:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:30,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:30,714 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:30,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209504593] [2022-11-16 11:45:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:30,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:30,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:30,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:45:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:30,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:45:30,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:45:30,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:45:31,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:31,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523806613] [2022-11-16 11:45:31,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:31,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209504593] [2022-11-16 11:45:31,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209504593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:31,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:31,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 11:45:31,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670284693] [2022-11-16 11:45:31,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:31,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:45:31,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:31,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:45:31,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:45:31,115 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:45:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:31,459 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2022-11-16 11:45:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2022-11-16 11:45:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:31,461 INFO L225 Difference]: With dead ends: 54 [2022-11-16 11:45:31,461 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 11:45:31,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:31,462 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:31,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 47 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:45:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 11:45:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-16 11:45:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:45:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-11-16 11:45:31,483 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 19 [2022-11-16 11:45:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:31,483 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-16 11:45:31,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:45:31,484 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-11-16 11:45:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:45:31,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:31,485 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:31,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:31,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:31,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2022-11-16 11:45:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:31,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662671367] [2022-11-16 11:45:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:31,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:31,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:31,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857413686] [2022-11-16 11:45:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:31,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:31,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:31,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:45:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:31,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:45:31,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:45:31,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:45:32,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:32,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662671367] [2022-11-16 11:45:32,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:32,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857413686] [2022-11-16 11:45:32,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857413686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:32,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:32,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 11:45:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200759894] [2022-11-16 11:45:32,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:32,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:45:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:45:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:45:32,499 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:45:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:33,686 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-16 11:45:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:33,687 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2022-11-16 11:45:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:33,688 INFO L225 Difference]: With dead ends: 67 [2022-11-16 11:45:33,688 INFO L226 Difference]: Without dead ends: 58 [2022-11-16 11:45:33,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:33,690 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:33,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:45:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-16 11:45:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-16 11:45:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 11:45:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2022-11-16 11:45:33,740 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 24 [2022-11-16 11:45:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:33,740 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2022-11-16 11:45:33,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:45:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2022-11-16 11:45:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 11:45:33,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:33,744 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:33,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:33,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:33,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:33,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 1 times [2022-11-16 11:45:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:33,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7250074] [2022-11-16 11:45:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:33,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:33,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904709313] [2022-11-16 11:45:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:33,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:33,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:33,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:33,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:45:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:34,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:45:34,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:45:34,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:45:34,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:34,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7250074] [2022-11-16 11:45:34,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:34,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904709313] [2022-11-16 11:45:34,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904709313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:34,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:34,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-16 11:45:34,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068546681] [2022-11-16 11:45:34,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:34,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:45:34,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:45:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:34,404 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-16 11:45:36,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:45:37,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:37,476 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2022-11-16 11:45:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:45:37,477 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 46 [2022-11-16 11:45:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:37,478 INFO L225 Difference]: With dead ends: 82 [2022-11-16 11:45:37,478 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 11:45:37,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:45:37,480 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 80 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:37,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 62 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 281 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:45:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 11:45:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-11-16 11:45:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-16 11:45:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-11-16 11:45:37,528 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 46 [2022-11-16 11:45:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:37,528 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-11-16 11:45:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-16 11:45:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-11-16 11:45:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:45:37,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:37,530 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:37,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:37,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1498221753, now seen corresponding path program 2 times [2022-11-16 11:45:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:37,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837525718] [2022-11-16 11:45:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:37,754 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:37,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934221727] [2022-11-16 11:45:37,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:45:37,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:37,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:37,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:37,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:45:37,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:45:37,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:45:37,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:45:37,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-16 11:45:38,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-16 11:45:38,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:38,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837525718] [2022-11-16 11:45:38,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:38,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934221727] [2022-11-16 11:45:38,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934221727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:38,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:38,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 11:45:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001640382] [2022-11-16 11:45:38,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:38,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:45:38,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:45:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:45:38,200 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-16 11:45:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:39,088 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2022-11-16 11:45:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:45:39,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 56 [2022-11-16 11:45:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:39,090 INFO L225 Difference]: With dead ends: 86 [2022-11-16 11:45:39,090 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 11:45:39,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:39,091 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:39,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:45:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 11:45:39,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-16 11:45:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 48 states have internal predecessors, (48), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:45:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2022-11-16 11:45:39,122 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 56 [2022-11-16 11:45:39,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:39,122 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2022-11-16 11:45:39,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-16 11:45:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2022-11-16 11:45:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:45:39,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:39,132 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:39,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:39,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:45:39,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:39,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:39,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2022-11-16 11:45:39,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:39,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42208937] [2022-11-16 11:45:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:39,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:39,349 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:39,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181946158] [2022-11-16 11:45:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:39,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:39,355 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:39,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:45:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:39,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:45:39,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 11:45:39,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 11:45:40,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42208937] [2022-11-16 11:45:40,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:40,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181946158] [2022-11-16 11:45:40,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181946158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:40,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:40,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-11-16 11:45:40,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729254774] [2022-11-16 11:45:40,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:40,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:45:40,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:40,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:45:40,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:40,142 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-16 11:45:41,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:41,723 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2022-11-16 11:45:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:45:41,724 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2022-11-16 11:45:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:41,725 INFO L225 Difference]: With dead ends: 95 [2022-11-16 11:45:41,725 INFO L226 Difference]: Without dead ends: 93 [2022-11-16 11:45:41,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:45:41,727 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:41,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 150 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:45:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-16 11:45:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2022-11-16 11:45:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-16 11:45:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2022-11-16 11:45:41,779 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 67 [2022-11-16 11:45:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:41,779 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2022-11-16 11:45:41,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-16 11:45:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2022-11-16 11:45:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 11:45:41,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:41,783 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:41,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:41,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:45:41,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:41,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2022-11-16 11:45:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:41,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777459984] [2022-11-16 11:45:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:41,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:42,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:42,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178643127] [2022-11-16 11:45:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:42,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:42,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:42,018 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:42,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:45:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:42,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:45:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-16 11:45:42,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:42,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:42,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777459984] [2022-11-16 11:45:42,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:42,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178643127] [2022-11-16 11:45:42,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178643127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:42,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:42,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-16 11:45:42,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286635004] [2022-11-16 11:45:42,664 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:42,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:45:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:45:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:42,668 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 11:45:43,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:43,052 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2022-11-16 11:45:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:45:43,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2022-11-16 11:45:43,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:43,060 INFO L225 Difference]: With dead ends: 97 [2022-11-16 11:45:43,060 INFO L226 Difference]: Without dead ends: 88 [2022-11-16 11:45:43,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:45:43,064 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:43,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 95 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:45:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-16 11:45:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-16 11:45:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-16 11:45:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2022-11-16 11:45:43,109 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 72 [2022-11-16 11:45:43,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:43,109 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2022-11-16 11:45:43,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 11:45:43,110 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2022-11-16 11:45:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 11:45:43,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:43,113 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:43,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:43,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:43,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:43,319 INFO L85 PathProgramCache]: Analyzing trace with hash -322800313, now seen corresponding path program 3 times [2022-11-16 11:45:43,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:43,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210676292] [2022-11-16 11:45:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:43,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:43,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:43,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65154048] [2022-11-16 11:45:43,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:45:43,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:43,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:43,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:43,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:45:43,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:45:43,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:45:43,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 11:45:43,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-16 11:45:43,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-16 11:45:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210676292] [2022-11-16 11:45:44,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:44,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65154048] [2022-11-16 11:45:44,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65154048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:44,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:44,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-16 11:45:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563757704] [2022-11-16 11:45:44,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:44,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:45:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:45:44,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:45:44,529 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-16 11:45:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:47,392 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2022-11-16 11:45:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:45:47,392 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 78 [2022-11-16 11:45:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:47,394 INFO L225 Difference]: With dead ends: 110 [2022-11-16 11:45:47,394 INFO L226 Difference]: Without dead ends: 107 [2022-11-16 11:45:47,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:45:47,395 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:47,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 84 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 11:45:47,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-16 11:45:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2022-11-16 11:45:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 27 states have call successors, (27), 16 states have call predecessors, (27), 16 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-16 11:45:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2022-11-16 11:45:47,446 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 78 [2022-11-16 11:45:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:47,447 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2022-11-16 11:45:47,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-16 11:45:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2022-11-16 11:45:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-16 11:45:47,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:47,448 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:47,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:47,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:45:47,654 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:47,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2022-11-16 11:45:47,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:47,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932771847] [2022-11-16 11:45:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:47,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:47,678 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:47,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145482096] [2022-11-16 11:45:47,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:45:47,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:47,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:47,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:45:47,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:45:47,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:45:47,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 11:45:47,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 78 proven. 25 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-11-16 11:45:48,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:49,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932771847] [2022-11-16 11:45:49,087 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:49,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145482096] [2022-11-16 11:45:49,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145482096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:49,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:49,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-16 11:45:49,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287947564] [2022-11-16 11:45:49,088 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:45:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:49,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:45:49,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:45:49,090 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-16 11:45:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:49,672 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2022-11-16 11:45:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:45:49,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 99 [2022-11-16 11:45:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:49,674 INFO L225 Difference]: With dead ends: 111 [2022-11-16 11:45:49,674 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 11:45:49,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:45:49,675 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:49,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:45:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 11:45:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-16 11:45:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 24 states have call successors, (24), 15 states have call predecessors, (24), 15 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 11:45:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2022-11-16 11:45:49,708 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 99 [2022-11-16 11:45:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:49,709 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2022-11-16 11:45:49,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-16 11:45:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2022-11-16 11:45:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 11:45:49,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:49,711 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:49,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:49,917 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:49,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:49,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2022-11-16 11:45:49,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:49,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970637172] [2022-11-16 11:45:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:49,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:49,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:49,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523912095] [2022-11-16 11:45:49,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:45:49,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:49,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:49,940 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:49,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:45:50,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:45:50,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:45:50,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 11:45:50,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 101 proven. 43 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-11-16 11:45:50,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-16 11:45:53,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:53,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970637172] [2022-11-16 11:45:53,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:53,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523912095] [2022-11-16 11:45:53,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523912095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:53,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:45:53,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2022-11-16 11:45:53,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447488434] [2022-11-16 11:45:53,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:53,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:45:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:45:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:45:53,834 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-16 11:46:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:00,097 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2022-11-16 11:46:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:46:00,098 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 121 [2022-11-16 11:46:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:00,099 INFO L225 Difference]: With dead ends: 127 [2022-11-16 11:46:00,099 INFO L226 Difference]: Without dead ends: 125 [2022-11-16 11:46:00,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:46:00,101 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:00,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 119 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 11:46:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-16 11:46:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2022-11-16 11:46:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 24 states have call successors, (24), 17 states have call predecessors, (24), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 11:46:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2022-11-16 11:46:00,134 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 121 [2022-11-16 11:46:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:00,135 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2022-11-16 11:46:00,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-16 11:46:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2022-11-16 11:46:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-16 11:46:00,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:00,137 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:00,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:00,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:00,339 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:00,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 3 times [2022-11-16 11:46:00,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:00,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219952550] [2022-11-16 11:46:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:00,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:00,359 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:46:00,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453422820] [2022-11-16 11:46:00,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:46:00,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:00,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:00,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:00,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:46:00,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:46:00,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:46:00,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 11:46:00,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:19,401 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_112| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_147| Int) (|aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| Int) (|aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| Int)) (let ((.cse0 (* 6 |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|)) (.cse1 (* (* |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|) 36)) (.cse2 (* |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|)) (.cse3 (* 72 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62| |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|))) (.cse4 (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62|) 36)) (.cse5 (* (* |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|) 12)) (.cse6 (* 12 (* |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62|)))) (and (<= 2 (+ |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62| |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|)) (< |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| (+ .cse0 6)) (= (+ .cse1 (* |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_147|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_112| 18) .cse2 18 .cse3 (* |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| 8) .cse4) (+ (* 6 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_147| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62|)) .cse5 (* 48 |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|) .cse6 (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_147| |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|) 6) (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62| 48))) (< |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| 6) (<= |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62| 12) (<= .cse0 |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|) (<= 0 |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|) (= (+ .cse1 (* |aux_mod_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69| 6) 12 .cse2 .cse3 .cse4) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_147| 12) (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62| 36) (* 36 |aux_div_aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_161_62_69|) .cse5 .cse6))))) is different from false [2022-11-16 11:46:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 261 proven. 74 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2022-11-16 11:46:27,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 204 proven. 34 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-16 11:46:31,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:31,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219952550] [2022-11-16 11:46:31,399 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:46:31,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453422820] [2022-11-16 11:46:31,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453422820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:46:31,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:46:31,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2022-11-16 11:46:31,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958570307] [2022-11-16 11:46:31,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:31,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:46:31,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:31,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:46:31,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=331, Unknown=1, NotChecked=0, Total=420 [2022-11-16 11:46:31,401 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 14 states have internal predecessors, (32), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-16 11:46:36,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:36,029 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2022-11-16 11:46:36,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:46:36,029 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 14 states have internal predecessors, (32), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) Word has length 126 [2022-11-16 11:46:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:36,030 INFO L225 Difference]: With dead ends: 106 [2022-11-16 11:46:36,030 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 11:46:36,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=146, Invalid=503, Unknown=1, NotChecked=0, Total=650 [2022-11-16 11:46:36,034 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:36,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 45 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 11:46:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 11:46:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 11:46:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 11:46:36,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2022-11-16 11:46:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:36,035 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:46:36,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 14 states have internal predecessors, (32), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-16 11:46:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:46:36,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 11:46:36,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:46:36,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:36,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:46:36,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 11:46:56,958 WARN L233 SmtUtils]: Spent 19.39s on a formula simplification. DAG size of input: 139 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:47:14,353 WARN L233 SmtUtils]: Spent 17.39s on a formula simplification. DAG size of input: 139 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:47:42,506 WARN L233 SmtUtils]: Spent 22.71s on a formula simplification. DAG size of input: 128 DAG size of output: 52 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:48:00,514 WARN L233 SmtUtils]: Spent 18.00s on a formula simplification. DAG size of input: 128 DAG size of output: 52 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:48:19,970 WARN L233 SmtUtils]: Spent 19.45s on a formula simplification. DAG size of input: 139 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:48:19,975 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 11:48:19,975 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| 8)) (+ 18 .cse0 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-16 11:48:19,976 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-16 11:48:19,976 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-11-16 11:48:19,977 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse7 (* 6 |ULTIMATE.start_main_~n~0#1|)) (.cse8 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse9 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= |ULTIMATE.start_main_~y~0#1| (+ .cse8 .cse9 1))) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse7))) (.cse4 (<= |ULTIMATE.start_main_~a~0#1| 10)) (.cse5 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse6 (= (+ .cse8 .cse9 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (let ((.cse2 (div (- |ULTIMATE.start_main_~z~0#1|) (- 6)))) (and .cse0 .cse1 (not (<= .cse2 (+ |ULTIMATE.start_main_~a~0#1| 1))) .cse3 .cse4 .cse5 (<= .cse2 (+ 2 |ULTIMATE.start_main_~a~0#1|)) .cse6)) (and (= |ULTIMATE.start_main_~x~0#1| 1) .cse3 (= 6 .cse7) .cse6) (and .cse0 .cse1 .cse3 (= |ULTIMATE.start_main_~x~0#1| 8) .cse4 .cse5 .cse6) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))))) [2022-11-16 11:48:19,977 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-16 11:48:19,977 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-11-16 11:48:19,978 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-11-16 11:48:19,978 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| 8)) (+ 18 .cse0 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-16 11:48:19,978 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| 8)) (+ 18 .cse0 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-16 11:48:19,979 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-16 11:48:19,979 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 11:48:19,979 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 11:48:19,979 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 11:48:19,979 INFO L902 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2022-11-16 11:48:19,980 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-11-16 11:48:19,980 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-16 11:48:19,980 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (let ((.cse2 (div (- |ULTIMATE.start_main_~z~0#1|) (- 6))) (.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (not (<= .cse2 (+ |ULTIMATE.start_main_~a~0#1| 1))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= .cse2 (+ 2 |ULTIMATE.start_main_~a~0#1|)) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-16 11:48:19,980 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-11-16 11:48:19,981 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| 8)) (+ 18 .cse0 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-16 11:48:19,981 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| 8)) (+ 18 .cse0 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-16 11:48:19,981 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-16 11:48:19,981 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-16 11:48:19,982 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-16 11:48:19,982 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-16 11:48:19,982 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-16 11:48:19,982 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-16 11:48:19,986 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2022-11-16 11:48:19,989 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:48:20,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:48:20 BoogieIcfgContainer [2022-11-16 11:48:20,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:48:20,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:48:20,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:48:20,009 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:48:20,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:28" (3/4) ... [2022-11-16 11:48:20,014 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:48:20,022 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 11:48:20,028 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-16 11:48:20,029 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 11:48:20,029 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:48:20,029 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:48:20,088 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:48:20,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:48:20,089 INFO L158 Benchmark]: Toolchain (without parser) took 172498.76ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 110.1MB in the beginning and 94.8MB in the end (delta: 15.3MB). Peak memory consumption was 80.4MB. Max. memory is 16.1GB. [2022-11-16 11:48:20,089 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:48:20,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.42ms. Allocated memory is still 140.5MB. Free memory was 109.7MB in the beginning and 115.9MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:48:20,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.56ms. Allocated memory is still 140.5MB. Free memory was 115.9MB in the beginning and 114.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:48:20,090 INFO L158 Benchmark]: Boogie Preprocessor took 45.97ms. Allocated memory is still 140.5MB. Free memory was 114.4MB in the beginning and 113.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:48:20,091 INFO L158 Benchmark]: RCFGBuilder took 333.35ms. Allocated memory is still 140.5MB. Free memory was 113.3MB in the beginning and 101.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:48:20,091 INFO L158 Benchmark]: TraceAbstraction took 171598.11ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 101.2MB in the beginning and 97.9MB in the end (delta: 3.3MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. [2022-11-16 11:48:20,091 INFO L158 Benchmark]: Witness Printer took 79.15ms. Allocated memory is still 205.5MB. Free memory was 97.9MB in the beginning and 94.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:48:20,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.42ms. Allocated memory is still 140.5MB. Free memory was 109.7MB in the beginning and 115.9MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.56ms. Allocated memory is still 140.5MB. Free memory was 115.9MB in the beginning and 114.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.97ms. Allocated memory is still 140.5MB. Free memory was 114.4MB in the beginning and 113.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.35ms. Allocated memory is still 140.5MB. Free memory was 113.3MB in the beginning and 101.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 171598.11ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 101.2MB in the beginning and 97.9MB in the end (delta: 3.3MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. * Witness Printer took 79.15ms. Allocated memory is still 205.5MB. Free memory was 97.9MB in the beginning and 94.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 171.5s, OverallIterations: 13, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 103.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 348 SdHoareTripleChecker+Valid, 18.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 254 mSDsluCounter, 989 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 645 mSDsCounter, 605 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3365 IncrementalHoareTripleChecker+Invalid, 3971 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 605 mSolverCounterUnsat, 344 mSDtfsCounter, 3365 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1389 GetRequests, 1204 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=12, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 111 NumberOfFragments, 922 HoareAnnotationTreeSize, 65 FomulaSimplifications, 936 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 14 FomulaSimplificationsInter, 7651 FormulaSimplificationTreeSizeReductionInter, 103.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 40.6s InterpolantComputationTime, 740 NumberOfCodeBlocks, 628 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1269 ConstructedInterpolants, 0 QuantifiedInterpolants, 6429 SizeOfPredicates, 48 NumberOfNonLiveVariables, 1549 ConjunctsInSsa, 318 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 6194/6566 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((cond == 1 && y * z + z * 8 == 18 + x * 18 + z * z) && z == 6 + 6 * n) && n <= a + 1) && a <= 10) && 0 <= a) && 66 + n * 48 + n * y * 6 + n * z * 12 == 6 * z + x * 18 + 30 * y - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 11:48:20,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df15836d-b8c6-4a8a-9288-9fc73bf92190/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE