./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 a7db00fa220927f51e1e342e06102a5d28a1c61268049ef86f9068e213c9adb5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:42:05,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:42:05,759 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:42:05,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:42:05,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:42:05,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:42:05,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:42:05,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:42:05,791 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:42:05,791 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:42:05,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:42:05,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:42:05,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:42:05,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:42:05,794 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:42:05,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:42:05,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:42:05,795 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:42:05,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:42:05,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:42:05,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:42:05,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:42:05,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:42:05,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:42:05,799 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:42:05,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:42:05,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:42:05,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:42:05,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:42:05,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:42:05,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:42:05,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:42:05,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:42:05,803 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:42:05,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:42:05,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:42:05,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:42:05,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:42:05,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:42:05,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:42:05,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:42:05,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:42:05,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7db00fa220927f51e1e342e06102a5d28a1c61268049ef86f9068e213c9adb5 [2023-11-29 00:42:06,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:42:06,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:42:06,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:42:06,047 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:42:06,047 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:42:06,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c [2023-11-29 00:42:08,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:42:08,990 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:42:08,990 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c [2023-11-29 00:42:08,996 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/data/3833b3d8d/780cc6afbe704d2aa525eb7061833fa8/FLAG9623fed2e [2023-11-29 00:42:09,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/data/3833b3d8d/780cc6afbe704d2aa525eb7061833fa8 [2023-11-29 00:42:09,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:42:09,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:42:09,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:42:09,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:42:09,018 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:42:09,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86290a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09, skipping insertion in model container [2023-11-29 00:42:09,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:42:09,171 WARN L240 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_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c[458,471] [2023-11-29 00:42:09,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:42:09,198 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:42:09,212 WARN L240 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_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c[458,471] [2023-11-29 00:42:09,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:42:09,235 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:42:09,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09 WrapperNode [2023-11-29 00:42:09,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:42:09,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:42:09,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:42:09,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:42:09,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,273 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-11-29 00:42:09,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:42:09,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:42:09,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:42:09,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:42:09,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,302 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:42:09,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:42:09,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:42:09,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:42:09,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:42:09,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (1/1) ... [2023-11-29 00:42:09,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:42:09,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:09,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:42:09,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:42:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:42:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:42:09,383 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:42:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:42:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:42:09,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:42:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 00:42:09,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 00:42:09,443 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:42:09,446 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:42:09,568 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:42:09,593 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:42:09,594 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:42:09,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:42:09 BoogieIcfgContainer [2023-11-29 00:42:09,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:42:09,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:42:09,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:42:09,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:42:09,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:42:09" (1/3) ... [2023-11-29 00:42:09,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9964c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:42:09, skipping insertion in model container [2023-11-29 00:42:09,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:09" (2/3) ... [2023-11-29 00:42:09,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9964c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:42:09, skipping insertion in model container [2023-11-29 00:42:09,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:42:09" (3/3) ... [2023-11-29 00:42:09,603 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound50.c [2023-11-29 00:42:09,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:42:09,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:42:09,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:42:09,672 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=LoopHeads, 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;@1555e4bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:42:09,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:42:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 00:42:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:42:09,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:42:09,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:09,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:42:09,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1419667615, now seen corresponding path program 1 times [2023-11-29 00:42:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:09,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819683046] [2023-11-29 00:42:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:09,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819683046] [2023-11-29 00:42:09,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:42:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310475668] [2023-11-29 00:42:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:09,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:09,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:09,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:42:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:09,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:42:09,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:42:09,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:09,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310475668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:09,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:09,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:42:09,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765404277] [2023-11-29 00:42:09,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:09,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:42:09,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:42:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:42:09,931 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:42:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:42:09,956 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2023-11-29 00:42:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:42:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-11-29 00:42:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:42:09,964 INFO L225 Difference]: With dead ends: 40 [2023-11-29 00:42:09,965 INFO L226 Difference]: Without dead ends: 19 [2023-11-29 00:42:09,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:42:09,971 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:42:09,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:42:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-29 00:42:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-29 00:42:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:42:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-11-29 00:42:10,012 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 17 [2023-11-29 00:42:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:42:10,012 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-11-29 00:42:10,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:42:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-11-29 00:42:10,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:42:10,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:42:10,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:10,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:42:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 00:42:10,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:42:10,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1758174245, now seen corresponding path program 1 times [2023-11-29 00:42:10,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:10,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644146225] [2023-11-29 00:42:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:10,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:10,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798696735] [2023-11-29 00:42:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:10,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:10,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:10,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:10,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:42:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:10,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:42:10,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:42:10,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:10,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:10,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644146225] [2023-11-29 00:42:10,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:10,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798696735] [2023-11-29 00:42:10,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798696735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:10,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:10,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:42:10,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631852550] [2023-11-29 00:42:10,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:10,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:42:10,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:42:10,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:42:10,393 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:42:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:42:10,485 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2023-11-29 00:42:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:42:10,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-29 00:42:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:42:10,503 INFO L225 Difference]: With dead ends: 30 [2023-11-29 00:42:10,503 INFO L226 Difference]: Without dead ends: 26 [2023-11-29 00:42:10,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:42:10,505 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:42:10,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 68 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:42:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-29 00:42:10,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-29 00:42:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 00:42:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-11-29 00:42:10,515 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2023-11-29 00:42:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:42:10,515 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-11-29 00:42:10,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:42:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-11-29 00:42:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:42:10,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:42:10,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:10,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:42:10,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:10,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:42:10,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash -795669560, now seen corresponding path program 1 times [2023-11-29 00:42:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063641055] [2023-11-29 00:42:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:10,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:10,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006241649] [2023-11-29 00:42:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:10,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:10,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:10,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:10,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:42:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:10,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:42:10,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:42:10,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:42:11,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:11,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063641055] [2023-11-29 00:42:11,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006241649] [2023-11-29 00:42:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006241649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:11,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:11,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-11-29 00:42:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559492912] [2023-11-29 00:42:11,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:11,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:42:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:11,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:42:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:42:11,031 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:42:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:42:11,134 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-11-29 00:42:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:42:11,135 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-29 00:42:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:42:11,136 INFO L225 Difference]: With dead ends: 37 [2023-11-29 00:42:11,136 INFO L226 Difference]: Without dead ends: 33 [2023-11-29 00:42:11,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:42:11,138 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:42:11,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:42:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-29 00:42:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2023-11-29 00:42:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 00:42:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-29 00:42:11,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 24 [2023-11-29 00:42:11,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:42:11,151 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-29 00:42:11,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:42:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-29 00:42:11,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 00:42:11,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:42:11,152 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:11,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:42:11,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:11,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:42:11,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1266135666, now seen corresponding path program 1 times [2023-11-29 00:42:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:11,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909639518] [2023-11-29 00:42:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:11,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:11,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:11,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400372203] [2023-11-29 00:42:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:11,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:11,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:11,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:11,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:42:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:11,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:42:11,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:42:11,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:19,670 WARN L854 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-11-29 00:42:27,737 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:42:35,749 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:42:51,779 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:42:55,788 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| Int)) (or (= (mod (+ (* 29 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 15 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 30) 0) (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|))))) is different from true [2023-11-29 00:43:11,821 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:43:28,715 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:43:32,723 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| Int)) (or (= (mod (+ (* 29 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 15 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 30) 0) (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-11-29 00:43:37,847 WARN L293 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:44:02,081 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ |c_ULTIMATE.start_main_~c~0#1| (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-11-29 00:44:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 4 not checked. [2023-11-29 00:44:10,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:10,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909639518] [2023-11-29 00:44:10,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:44:10,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400372203] [2023-11-29 00:44:10,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400372203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:44:10,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:44:10,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2023-11-29 00:44:10,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684329447] [2023-11-29 00:44:10,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:44:10,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:44:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:44:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=107, Unknown=4, NotChecked=92, Total=240 [2023-11-29 00:44:10,827 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 00:44:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:11,001 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-11-29 00:44:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:44:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 35 [2023-11-29 00:44:11,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:11,003 INFO L225 Difference]: With dead ends: 37 [2023-11-29 00:44:11,003 INFO L226 Difference]: Without dead ends: 31 [2023-11-29 00:44:11,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=56, Invalid=166, Unknown=4, NotChecked=116, Total=342 [2023-11-29 00:44:11,005 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:11,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 129 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 100 Unchecked, 0.1s Time] [2023-11-29 00:44:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-29 00:44:11,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-29 00:44:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 00:44:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-11-29 00:44:11,016 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 35 [2023-11-29 00:44:11,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:11,017 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-11-29 00:44:11,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 00:44:11,017 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-11-29 00:44:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 00:44:11,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:11,019 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:11,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:44:11,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:44:11,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:11,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1244194529, now seen corresponding path program 2 times [2023-11-29 00:44:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:11,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271816819] [2023-11-29 00:44:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:11,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:44:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756914175] [2023-11-29 00:44:11,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:44:11,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:44:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:44:11,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:44:11,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:44:11,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:44:11,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:11,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 00:44:11,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 00:44:11,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:19,600 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ |c_ULTIMATE.start_main_~c~0#1| (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-11-29 00:44:27,639 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:44:39,754 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:44:47,763 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| Int)) (or (= (+ |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|)) (+ |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9|))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 29) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 15)) 30) 0)))) is different from true [2023-11-29 00:45:00,051 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:45:16,081 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:45:24,094 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| Int)) (or (= (+ |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|)) (+ |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9|))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 29) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 15)) 30) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-11-29 00:45:36,125 WARN L854 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0)) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2)) (+ (* |c_ULTIMATE.start_main_~c~0#1| 2) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|)))) is different from false [2023-11-29 00:45:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 1 refuted. 6 times theorem prover too weak. 19 trivial. 9 not checked. [2023-11-29 00:45:44,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:45:44,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271816819] [2023-11-29 00:45:44,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:45:44,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756914175] [2023-11-29 00:45:44,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756914175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:45:44,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:45:44,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2023-11-29 00:45:44,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298363864] [2023-11-29 00:45:44,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:45:44,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:45:44,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:45:44,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:45:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=151, Unknown=4, NotChecked=108, Total=306 [2023-11-29 00:45:44,162 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 00:45:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:44,443 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2023-11-29 00:45:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:45:44,444 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 42 [2023-11-29 00:45:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:44,445 INFO L225 Difference]: With dead ends: 50 [2023-11-29 00:45:44,445 INFO L226 Difference]: Without dead ends: 40 [2023-11-29 00:45:44,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=90, Invalid=342, Unknown=4, NotChecked=164, Total=600 [2023-11-29 00:45:44,447 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:44,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 145 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 165 Unchecked, 0.1s Time] [2023-11-29 00:45:44,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-29 00:45:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-29 00:45:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:45:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-11-29 00:45:44,463 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 42 [2023-11-29 00:45:44,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:44,464 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-11-29 00:45:44,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 00:45:44,464 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-11-29 00:45:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 00:45:44,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:44,466 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:44,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:45:44,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:45:44,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:44,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1662742834, now seen corresponding path program 3 times [2023-11-29 00:45:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:45:44,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620093957] [2023-11-29 00:45:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:45:44,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:45:44,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328417169] [2023-11-29 00:45:44,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:45:44,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:45:44,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:45:44,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:45:44,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:45:49,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 00:45:49,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:45:49,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 00:45:49,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 00:45:49,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:57,390 WARN L854 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0)) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2)) (+ (* |c_ULTIMATE.start_main_~c~0#1| 2) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|)))) is different from false [2023-11-29 00:46:05,424 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:46:13,433 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:46:25,447 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:46:33,460 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| Int)) (or (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_19|) (* |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_19| 2)) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 2))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 29) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 15)) 30) 0)))) is different from true [2023-11-29 00:46:45,548 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:47:01,576 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:47:09,605 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| Int)) (or (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_19|) (* |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_19| 2)) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 2))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 29) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 15)) 30) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-11-29 00:47:21,646 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~c~0#1| 3) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 3))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-11-29 00:47:37,697 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~c~0#1| 4)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 4))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-11-29 00:47:54,484 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~c~0#1| 5)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 5))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-11-29 00:48:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 5 refuted. 9 times theorem prover too weak. 70 trivial. 41 not checked. [2023-11-29 00:48:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620093957] [2023-11-29 00:48:02,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:48:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328417169] [2023-11-29 00:48:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328417169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:48:02,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:48:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2023-11-29 00:48:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879263074] [2023-11-29 00:48:02,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:48:02,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:48:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:48:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=261, Unknown=6, NotChecked=222, Total=552 [2023-11-29 00:48:02,522 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 24 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 00:48:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:03,082 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-11-29 00:48:03,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:48:03,082 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 63 [2023-11-29 00:48:03,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:03,083 INFO L225 Difference]: With dead ends: 45 [2023-11-29 00:48:03,083 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 00:48:03,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=136, Invalid=638, Unknown=6, NotChecked=342, Total=1122 [2023-11-29 00:48:03,086 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:03,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 275 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 214 Invalid, 0 Unknown, 203 Unchecked, 0.2s Time] [2023-11-29 00:48:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 00:48:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 00:48:03,087 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) [2023-11-29 00:48:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 00:48:03,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2023-11-29 00:48:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:03,088 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 00:48:03,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 00:48:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 00:48:03,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 00:48:03,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:48:03,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:48:03,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 00:48:03,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 00:48:03,732 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 00:48:03,733 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (+ |ULTIMATE.start_main_~y~0#1| .cse0) (+ |ULTIMATE.start_main_~c~0#1| .cse1)) (= (+ (* 2 |ULTIMATE.start_main_~c~0#1|) .cse1) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse0)) (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= (+ (* 30 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 10) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 15))))) [2023-11-29 00:48:03,733 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2023-11-29 00:48:03,733 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2023-11-29 00:48:03,733 INFO L902 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: true [2023-11-29 00:48:03,734 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 00:48:03,734 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-11-29 00:48:03,734 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (+ |ULTIMATE.start_main_~y~0#1| .cse0) (+ |ULTIMATE.start_main_~c~0#1| .cse1)) (= (+ (* 2 |ULTIMATE.start_main_~c~0#1|) .cse1) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse0)) (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= (+ (* 30 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 10) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 15))))) [2023-11-29 00:48:03,734 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ (* 30 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 10) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 15)))) [2023-11-29 00:48:03,734 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-11-29 00:48:03,734 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ (* 30 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 10) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 15)))) [2023-11-29 00:48:03,734 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 8) the Hoare annotation is: true [2023-11-29 00:48:03,734 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-11-29 00:48:03,735 INFO L899 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2023-11-29 00:48:03,735 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-11-29 00:48:03,735 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-11-29 00:48:03,735 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-11-29 00:48:03,735 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-11-29 00:48:03,735 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-11-29 00:48:03,735 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-11-29 00:48:03,735 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-11-29 00:48:03,739 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-11-29 00:48:03,741 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:48:03,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:48:03 BoogieIcfgContainer [2023-11-29 00:48:03,753 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:48:03,754 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:48:03,754 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:48:03,754 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:48:03,755 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:42:09" (3/4) ... [2023-11-29 00:48:03,756 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:48:03,760 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-29 00:48:03,760 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 00:48:03,763 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-29 00:48:03,764 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 00:48:03,764 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 00:48:03,764 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:48:03,848 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:48:03,849 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:48:03,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:48:03,850 INFO L158 Benchmark]: Toolchain (without parser) took 354838.01ms. Allocated memory was 159.4MB in the beginning and 195.0MB in the end (delta: 35.7MB). Free memory was 122.3MB in the beginning and 146.2MB in the end (delta: -24.0MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-11-29 00:48:03,850 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:48:03,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.36ms. Allocated memory is still 159.4MB. Free memory was 121.7MB in the beginning and 111.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:48:03,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.67ms. Allocated memory is still 159.4MB. Free memory was 111.2MB in the beginning and 109.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:48:03,851 INFO L158 Benchmark]: Boogie Preprocessor took 39.08ms. Allocated memory is still 159.4MB. Free memory was 109.7MB in the beginning and 108.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:48:03,852 INFO L158 Benchmark]: RCFGBuilder took 279.86ms. Allocated memory is still 159.4MB. Free memory was 108.2MB in the beginning and 96.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:48:03,852 INFO L158 Benchmark]: TraceAbstraction took 354156.06ms. Allocated memory was 159.4MB in the beginning and 195.0MB in the end (delta: 35.7MB). Free memory was 95.0MB in the beginning and 150.4MB in the end (delta: -55.4MB). Peak memory consumption was 78.0MB. Max. memory is 16.1GB. [2023-11-29 00:48:03,852 INFO L158 Benchmark]: Witness Printer took 95.30ms. Allocated memory is still 195.0MB. Free memory was 150.4MB in the beginning and 146.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:48:03,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.36ms. Allocated memory is still 159.4MB. Free memory was 121.7MB in the beginning and 111.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.67ms. Allocated memory is still 159.4MB. Free memory was 111.2MB in the beginning and 109.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.08ms. Allocated memory is still 159.4MB. Free memory was 109.7MB in the beginning and 108.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 279.86ms. Allocated memory is still 159.4MB. Free memory was 108.2MB in the beginning and 96.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 354156.06ms. Allocated memory was 159.4MB in the beginning and 195.0MB in the end (delta: 35.7MB). Free memory was 95.0MB in the beginning and 150.4MB in the end (delta: -55.4MB). Peak memory consumption was 78.0MB. Max. memory is 16.1GB. * Witness Printer took 95.30ms. Allocated memory is still 195.0MB. Free memory was 150.4MB in the beginning and 146.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 354.1s, OverallIterations: 6, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 730 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 468 IncrementalHoareTripleChecker+Unchecked, 618 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 514 IncrementalHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 112 mSDtfsCounter, 514 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 385 GetRequests, 286 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 65.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 33 PreInvPairs, 62 NumberOfFragments, 208 HoareAnnotationTreeSize, 33 FomulaSimplifications, 600 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 572 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 346.1s InterpolantComputationTime, 215 NumberOfCodeBlocks, 215 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 352 ConstructedInterpolants, 9 QuantifiedInterpolants, 2296 SizeOfPredicates, 23 NumberOfNonLiveVariables, 552 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 304/458 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: 28]: Loop Invariant Derived loop invariant: (((((y + (y * y)) == (c + (c * y))) && (((2 * c) + (c * y)) == ((2 * y) + (y * y)))) && (((k * y) == (y * y)) || (c < k))) && (((30 * x) + y) == (((6 * ((((y * y) * y) * y) * y)) + (((y * y) * y) * 10)) + ((((y * y) * y) * y) * 15)))) RESULT: Ultimate proved your program to be correct! [2023-11-29 00:48:03,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e210e4e2-6e71-4c21-9f96-7b2cdb8e2f02/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE