./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.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_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/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_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/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_0547ca56-79a2-4ce5-85a3-a43eea21e39d/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 e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:45:13,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:45:13,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:45:13,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:45:13,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:45:14,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:45:14,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:45:14,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:45:14,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:45:14,024 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:45:14,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:45:14,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:45:14,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:45:14,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:45:14,026 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:45:14,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:45:14,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:45:14,028 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:45:14,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:45:14,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:45:14,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:45:14,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:45:14,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:45:14,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:45:14,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:45:14,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:45:14,032 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:45:14,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:45:14,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:45:14,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:45:14,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:45:14,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:45:14,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:45:14,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:45:14,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:45:14,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:45:14,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:45:14,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:45:14,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:45:14,036 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:45:14,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:45:14,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:45:14,037 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_0547ca56-79a2-4ce5-85a3-a43eea21e39d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 [2023-11-29 05:45:14,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:45:14,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:45:14,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:45:14,249 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:45:14,249 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:45:14,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2023-11-29 05:45:17,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:45:17,166 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:45:17,166 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2023-11-29 05:45:17,172 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/data/53e016bae/a13f912b4c364d37ac75920f8e03c235/FLAG8c0da3f16 [2023-11-29 05:45:17,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/data/53e016bae/a13f912b4c364d37ac75920f8e03c235 [2023-11-29 05:45:17,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:45:17,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:45:17,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:45:17,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:45:17,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:45:17,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7200f18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17, skipping insertion in model container [2023-11-29 05:45:17,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,221 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:45:17,371 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_0547ca56-79a2-4ce5-85a3-a43eea21e39d/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c[987,1000] [2023-11-29 05:45:17,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:45:17,397 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:45:17,409 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_0547ca56-79a2-4ce5-85a3-a43eea21e39d/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c[987,1000] [2023-11-29 05:45:17,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:45:17,433 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:45:17,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17 WrapperNode [2023-11-29 05:45:17,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:45:17,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:45:17,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:45:17,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:45:17,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,469 INFO L138 Inliner]: procedures = 16, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-11-29 05:45:17,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:45:17,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:45:17,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:45:17,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:45:17,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,500 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 5, 17, 4, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 2, 2, 1]. [2023-11-29 05:45:17,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:45:17,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:45:17,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:45:17,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:45:17,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (1/1) ... [2023-11-29 05:45:17,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:45:17,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:17,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:45:17,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:45:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:45:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:45:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:45:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:45:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:45:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:45:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:45:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:45:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:45:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:45:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:45:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:45:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:45:17,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:45:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:45:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:45:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:45:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:45:17,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:45:17,591 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2023-11-29 05:45:17,591 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2023-11-29 05:45:17,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 05:45:17,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 05:45:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:45:17,695 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:45:17,698 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:45:17,859 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:45:17,900 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:45:17,900 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:45:17,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:45:17 BoogieIcfgContainer [2023-11-29 05:45:17,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:45:17,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:45:17,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:45:17,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:45:17,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:45:17" (1/3) ... [2023-11-29 05:45:17,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17867912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:45:17, skipping insertion in model container [2023-11-29 05:45:17,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:17" (2/3) ... [2023-11-29 05:45:17,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17867912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:45:17, skipping insertion in model container [2023-11-29 05:45:17,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:45:17" (3/3) ... [2023-11-29 05:45:17,910 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2023-11-29 05:45:17,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:45:17,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:45:17,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:45:17,980 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;@7fa5150f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:45:17,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:45:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 05:45:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 05:45:17,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:17,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:17,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:17,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:17,997 INFO L85 PathProgramCache]: Analyzing trace with hash -248335761, now seen corresponding path program 1 times [2023-11-29 05:45:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:18,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909185486] [2023-11-29 05:45:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:18,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:18,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:18,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27852255] [2023-11-29 05:45:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:18,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:18,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:18,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:18,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:45:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:18,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 05:45:18,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:18,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:18,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:18,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:45:18,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909185486] [2023-11-29 05:45:18,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27852255] [2023-11-29 05:45:18,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27852255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:18,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:18,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:45:18,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785960204] [2023-11-29 05:45:18,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:18,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:45:18,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:45:18,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:45:18,531 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:18,776 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2023-11-29 05:45:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:45:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 05:45:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:18,784 INFO L225 Difference]: With dead ends: 52 [2023-11-29 05:45:18,784 INFO L226 Difference]: Without dead ends: 31 [2023-11-29 05:45:18,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:18,791 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:18,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 72 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:45:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-29 05:45:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-11-29 05:45:18,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 05:45:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-29 05:45:18,824 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2023-11-29 05:45:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:18,825 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-29 05:45:18,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-29 05:45:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 05:45:18,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:18,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:18,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:45:19,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:45:19,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:19,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2110697342, now seen corresponding path program 1 times [2023-11-29 05:45:19,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:19,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330933093] [2023-11-29 05:45:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:19,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:19,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124206513] [2023-11-29 05:45:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:19,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:19,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:19,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:19,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:45:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:19,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-29 05:45:19,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:19,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:19,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:19,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:45:19,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:45:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:19,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:19,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330933093] [2023-11-29 05:45:19,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124206513] [2023-11-29 05:45:19,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124206513] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:45:19,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:45:19,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2023-11-29 05:45:19,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579286388] [2023-11-29 05:45:19,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:45:19,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:45:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:19,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:45:19,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:45:19,840 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 17 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:45:20,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:20,457 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2023-11-29 05:45:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:45:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-29 05:45:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:20,466 INFO L225 Difference]: With dead ends: 57 [2023-11-29 05:45:20,466 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 05:45:20,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:45:20,469 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:20,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 104 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:45:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 05:45:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2023-11-29 05:45:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 30 states have internal predecessors, (31), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 05:45:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2023-11-29 05:45:20,487 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2023-11-29 05:45:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:20,487 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2023-11-29 05:45:20,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:45:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2023-11-29 05:45:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 05:45:20,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:20,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:20,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:45:20,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:20,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:20,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1884088945, now seen corresponding path program 1 times [2023-11-29 05:45:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547479941] [2023-11-29 05:45:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:20,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:20,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416302484] [2023-11-29 05:45:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:20,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:20,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:20,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:20,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:45:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:20,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 05:45:20,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:20,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:20,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:20,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:45:20,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:20,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547479941] [2023-11-29 05:45:20,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:20,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416302484] [2023-11-29 05:45:20,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416302484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:20,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:20,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:45:20,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685883182] [2023-11-29 05:45:20,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:20,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:45:20,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:20,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:45:20,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:45:20,927 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:45:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:21,054 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-11-29 05:45:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:45:21,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-29 05:45:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:21,056 INFO L225 Difference]: With dead ends: 51 [2023-11-29 05:45:21,056 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 05:45:21,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:45:21,058 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:21,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:45:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 05:45:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-29 05:45:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 05:45:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-11-29 05:45:21,072 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 18 [2023-11-29 05:45:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:21,072 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-11-29 05:45:21,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:45:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-29 05:45:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 05:45:21,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:21,074 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:21,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 05:45:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:21,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:21,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1821742097, now seen corresponding path program 1 times [2023-11-29 05:45:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260662424] [2023-11-29 05:45:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:21,305 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:21,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876347751] [2023-11-29 05:45:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:21,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:21,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:21,307 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:21,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:45:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:21,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 92 conjunts are in the unsatisfiable core [2023-11-29 05:45:21,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:21,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:21,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:45:21,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:45:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:45:22,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260662424] [2023-11-29 05:45:28,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876347751] [2023-11-29 05:45:28,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876347751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:28,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:28,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 05:45:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35796977] [2023-11-29 05:45:28,277 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:45:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:45:28,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:45:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:45:28,279 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 05:45:32,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:45:36,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:45:37,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:37,138 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2023-11-29 05:45:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:45:37,138 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 30 [2023-11-29 05:45:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:37,140 INFO L225 Difference]: With dead ends: 49 [2023-11-29 05:45:37,140 INFO L226 Difference]: Without dead ends: 39 [2023-11-29 05:45:37,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:45:37,141 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:37,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 64 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 214 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2023-11-29 05:45:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-29 05:45:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-29 05:45:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-29 05:45:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-11-29 05:45:37,149 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2023-11-29 05:45:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:37,149 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-11-29 05:45:37,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 05:45:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-11-29 05:45:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 05:45:37,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:37,151 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:37,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:45:37,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:37,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:37,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2029722161, now seen corresponding path program 2 times [2023-11-29 05:45:37,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:37,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014756097] [2023-11-29 05:45:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:37,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:37,375 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:37,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077817672] [2023-11-29 05:45:37,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:45:37,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:37,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:37,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:45:37,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:45:37,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:45:37,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 124 conjunts are in the unsatisfiable core [2023-11-29 05:45:37,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:37,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:37,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:45:38,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:45:38,143 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:45:38,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2023-11-29 05:45:38,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 34 [2023-11-29 05:45:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:45:38,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:13,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014756097] [2023-11-29 05:46:13,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077817672] [2023-11-29 05:46:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077817672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:13,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-29 05:46:13,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780704116] [2023-11-29 05:46:13,760 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:46:13,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:46:13,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:46:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=439, Unknown=6, NotChecked=0, Total=506 [2023-11-29 05:46:13,762 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 16 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:46:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:16,082 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2023-11-29 05:46:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:46:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2023-11-29 05:46:16,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:16,084 INFO L225 Difference]: With dead ends: 47 [2023-11-29 05:46:16,084 INFO L226 Difference]: Without dead ends: 41 [2023-11-29 05:46:16,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=110, Invalid=754, Unknown=6, NotChecked=0, Total=870 [2023-11-29 05:46:16,086 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:16,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 75 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 05:46:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-29 05:46:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-29 05:46:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-29 05:46:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-11-29 05:46:16,099 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 42 [2023-11-29 05:46:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:16,100 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-11-29 05:46:16,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:46:16,100 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-11-29 05:46:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 05:46:16,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:16,102 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:16,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:46:16,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:16,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:16,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:16,303 INFO L85 PathProgramCache]: Analyzing trace with hash -607493329, now seen corresponding path program 3 times [2023-11-29 05:46:16,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:16,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416097929] [2023-11-29 05:46:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:16,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:16,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338425335] [2023-11-29 05:46:16,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:46:16,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:16,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:16,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:16,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:46:16,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 05:46:16,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:46:16,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 140 conjunts are in the unsatisfiable core [2023-11-29 05:46:16,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:16,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:46:16,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-11-29 05:46:17,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2023-11-29 05:46:17,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:46:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:46:17,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:21,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:46:21,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 344 treesize of output 343 [2023-11-29 05:46:29,533 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse1 (select .cse2 c_func_to_recursive_line_26_to_34_0_~y.offset))) (or (and (= (let ((.cse0 (select (select (store |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~y.base (store .cse2 c_func_to_recursive_line_26_to_34_0_~y.offset (+ 2 .cse1))) |c_func_to_recursive_line_26_to_34_0_#in~y.base|) |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* 2 (* .cse0 .cse0 .cse0)) .cse0 (* (div (+ (* (- 1) .cse1) (* (- 3) .cse1 .cse1) (* (- 2) .cse1 .cse1 .cse1)) 6) 6) (* (* .cse0 .cse0) 3))) (+ (* .cse1 36) 30 (* (* .cse1 .cse1) 12))) (= |c_func_to_recursive_line_26_to_34_0_#in~x.base| c_func_to_recursive_line_26_to_34_0_~x.base) (= c_func_to_recursive_line_26_to_34_0_~x.offset |c_func_to_recursive_line_26_to_34_0_#in~x.offset|)) (not (= (mod (+ (* .cse1 .cse1 .cse1 4) (* 3 .cse1 .cse1) (* 5 .cse1)) 6) 0))))) is different from false [2023-11-29 05:46:41,573 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:46:45,625 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (let ((.cse2 (select .cse3 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (and (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18| Int)) (or (= (let ((.cse0 (select (select |c_#memory_int#2| |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18|))) (+ .cse0 (* 2 (* .cse0 .cse0 .cse0)) (* 3 (* .cse0 .cse0)))) (* 6 (select (select |c_#memory_int#1| |c_func_to_recursive_line_26_to_34_0_#in~x.base|) |c_func_to_recursive_line_26_to_34_0_#in~x.offset|))) (not (= (let ((.cse1 (select (select (store |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse3 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ 2 .cse2))) |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18|))) (+ .cse1 (* (* .cse1 .cse1) 3) (* (* .cse1 .cse1 .cse1) 2) (* (div (+ (* (- 1) .cse2) (* (- 2) .cse2 .cse2 .cse2) (* (- 3) .cse2 .cse2)) 6) 6))) (+ (* 12 (* .cse2 .cse2)) 30 (* .cse2 36)))))) (or (= (mod (+ (* .cse2 .cse2 .cse2 4) (* 5 .cse2) (* 3 .cse2 .cse2)) 6) 0) (forall ((|v_func_to_recursive_line_26_to_34_0_#in~x.base_BEFORE_CALL_18| Int) (|v_func_to_recursive_line_26_to_34_0_#in~x.offset_BEFORE_CALL_18| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18| Int)) (= (let ((.cse4 (select (select |c_#memory_int#2| |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18|))) (+ .cse4 (* 2 (* .cse4 .cse4 .cse4)) (* 3 (* .cse4 .cse4)))) (* (select (select |c_#memory_int#1| |v_func_to_recursive_line_26_to_34_0_#in~x.base_BEFORE_CALL_18|) |v_func_to_recursive_line_26_to_34_0_#in~x.offset_BEFORE_CALL_18|) 6))))))) is different from true [2023-11-29 05:46:57,654 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:47:11,905 WARN L293 SmtUtils]: Spent 9.47s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:47:15,916 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse9 (select |c_#memory_int#1| c_func_to_recursive_line_26_to_34_0_~x.base)) (.cse8 (select .cse7 c_func_to_recursive_line_26_to_34_0_~y.offset))) (let ((.cse10 (* .cse8 .cse8)) (.cse11 (select .cse9 c_func_to_recursive_line_26_to_34_0_~x.offset))) (or (let ((.cse2 (select |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (let ((.cse5 (store |c_#memory_int#1| c_func_to_recursive_line_26_to_34_0_~x.base (store .cse9 c_func_to_recursive_line_26_to_34_0_~x.offset (+ .cse10 .cse11 (* 2 .cse8) 1)))) (.cse4 (store |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~y.base (store .cse7 c_func_to_recursive_line_26_to_34_0_~y.offset (+ .cse8 1)))) (.cse1 (select .cse2 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (and (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18| Int)) (or (not (= (let ((.cse0 (select (select (store |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse2 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ 2 .cse1))) |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18|))) (+ .cse0 (* (* .cse0 .cse0) 3) (* (* .cse0 .cse0 .cse0) 2) (* (div (+ (* (- 1) .cse1) (* (- 2) .cse1 .cse1 .cse1) (* (- 3) .cse1 .cse1)) 6) 6))) (+ (* 12 (* .cse1 .cse1)) 30 (* .cse1 36)))) (= (let ((.cse3 (select (select .cse4 |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18|))) (+ .cse3 (* 2 (* .cse3 .cse3 .cse3)) (* 3 (* .cse3 .cse3)))) (* (select (select .cse5 |c_func_to_recursive_line_26_to_34_0_#in~x.base|) |c_func_to_recursive_line_26_to_34_0_#in~x.offset|) 6)))) (or (forall ((|v_func_to_recursive_line_26_to_34_0_#in~x.base_BEFORE_CALL_18| Int) (|v_func_to_recursive_line_26_to_34_0_#in~x.offset_BEFORE_CALL_18| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18| Int)) (= (* (select (select .cse5 |v_func_to_recursive_line_26_to_34_0_#in~x.base_BEFORE_CALL_18|) |v_func_to_recursive_line_26_to_34_0_#in~x.offset_BEFORE_CALL_18|) 6) (let ((.cse6 (select (select .cse4 |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_18|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_18|))) (+ .cse6 (* 2 (* .cse6 .cse6 .cse6)) (* 3 (* .cse6 .cse6)))))) (= (mod (+ (* .cse1 .cse1 .cse1 4) (* 5 .cse1) (* 3 .cse1 .cse1)) 6) 0))))) (not (= (+ .cse8 (* .cse10 3) (* 2 (* .cse8 .cse8 .cse8))) (* .cse11 6))))))) is different from true [2023-11-29 05:47:15,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:15,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416097929] [2023-11-29 05:47:15,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:15,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338425335] [2023-11-29 05:47:15,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338425335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:15,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:15,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-29 05:47:15,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526846406] [2023-11-29 05:47:15,918 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:47:15,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:47:15,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:47:15,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=492, Unknown=3, NotChecked=138, Total=702 [2023-11-29 05:47:15,920 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 20 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 05:47:20,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:47:24,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:47:27,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:47:27,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:27,695 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2023-11-29 05:47:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:47:27,696 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 54 [2023-11-29 05:47:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:27,697 INFO L225 Difference]: With dead ends: 49 [2023-11-29 05:47:27,697 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 05:47:27,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=138, Invalid=927, Unknown=3, NotChecked=192, Total=1260 [2023-11-29 05:47:27,698 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:27,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 95 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 331 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2023-11-29 05:47:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 05:47:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-29 05:47:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 05:47:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2023-11-29 05:47:27,707 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 54 [2023-11-29 05:47:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:27,707 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2023-11-29 05:47:27,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 05:47:27,708 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2023-11-29 05:47:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 05:47:27,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:27,709 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:27,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:47:27,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 05:47:27,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:27,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:27,910 INFO L85 PathProgramCache]: Analyzing trace with hash -496319473, now seen corresponding path program 4 times [2023-11-29 05:47:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:27,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117298739] [2023-11-29 05:47:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:27,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:27,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:27,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170828167] [2023-11-29 05:47:27,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:47:27,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:27,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:27,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:27,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:47:28,243 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:47:28,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:47:28,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 144 conjunts are in the unsatisfiable core [2023-11-29 05:47:28,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:28,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 05:47:28,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:47:28,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 05:47:28,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 40 [2023-11-29 05:47:28,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-11-29 05:47:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 52 proven. 34 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 05:47:28,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:35,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 308 [2023-11-29 05:47:39,757 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse0 (select .cse3 c_func_to_recursive_line_26_to_34_0_~y.offset))) (let ((.cse1 (* 2 .cse0 .cse0 .cse0))) (or (not (= (mod (+ (* 3 .cse0 .cse0) .cse0 .cse1) 6) 0)) (and (= (let ((.cse2 (select (select (store |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~y.base (store .cse3 c_func_to_recursive_line_26_to_34_0_~y.offset (+ 3 .cse0))) |c_func_to_recursive_line_26_to_34_0_#in~y.base|) |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* (* .cse2 .cse2 .cse2) 2) .cse2 (* 3 (* .cse2 .cse2)))) (+ 84 (* (div (+ (* 21 .cse0 .cse0) (* .cse0 73) .cse1) 6) 6))) (= |c_func_to_recursive_line_26_to_34_0_#in~x.base| c_func_to_recursive_line_26_to_34_0_~x.base) (= c_func_to_recursive_line_26_to_34_0_~x.offset |c_func_to_recursive_line_26_to_34_0_#in~x.offset|)))))) is different from false [2023-11-29 05:47:51,863 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:47:55,900 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (let ((.cse0 (select .cse5 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (let ((.cse1 (* 2 .cse0 .cse0 .cse0))) (and (or (= 0 (mod (+ .cse0 .cse1 (* 3 .cse0 .cse0)) 6)) (forall ((|v_func_to_recursive_line_26_to_34_0_#in~x.offset_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_26_to_34_0_#in~x.base_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28| Int)) (= (let ((.cse2 (select (select |c_#memory_int#2| |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28|))) (+ (* 3 (* .cse2 .cse2)) (* 2 (* .cse2 .cse2 .cse2)) .cse2)) (* (select (select |c_#memory_int#1| |v_func_to_recursive_line_26_to_34_0_#in~x.base_BEFORE_CALL_28|) |v_func_to_recursive_line_26_to_34_0_#in~x.offset_BEFORE_CALL_28|) 6)))) (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28| Int)) (or (= (let ((.cse3 (select (select |c_#memory_int#2| |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28|))) (+ (* 3 (* .cse3 .cse3)) (* 2 (* .cse3 .cse3 .cse3)) .cse3)) (* 6 (select (select |c_#memory_int#1| |c_func_to_recursive_line_26_to_34_0_#in~x.base|) |c_func_to_recursive_line_26_to_34_0_#in~x.offset|))) (not (= (let ((.cse4 (select (select (store |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse5 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ 3 .cse0))) |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28|))) (+ (* 3 (* .cse4 .cse4)) .cse4 (* 2 (* .cse4 .cse4 .cse4)))) (+ 84 (* (div (+ (* .cse0 73) (* 21 .cse0 .cse0) .cse1) 6) 6)))))))))) is different from true [2023-11-29 05:48:07,920 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:48:14,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 308 [2023-11-29 05:48:27,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 308 [2023-11-29 05:48:35,073 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 05:48:43,079 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 05:48:47,088 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse0 (select .cse4 c_func_to_recursive_line_26_to_34_0_~y.offset))) (let ((.cse1 (* 2 .cse0 .cse0 .cse0))) (or (not (= (mod (+ (* 3 .cse0 .cse0) .cse0 .cse1) 6) 0)) (let ((.cse11 (select |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (let ((.cse8 (select .cse11 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (let ((.cse9 (* 2 .cse8 .cse8 .cse8))) (let ((.cse6 (store |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse11 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ 3 .cse8)))) (.cse7 (+ 84 (* (div (+ (* .cse8 73) (* 21 .cse8 .cse8) .cse9) 6) 6)))) (let ((.cse2 (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28| Int)) (not (= (let ((.cse10 (select (select .cse6 |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28|))) (+ (* 3 (* .cse10 .cse10)) .cse10 (* 2 (* .cse10 .cse10 .cse10)))) .cse7))))) (and (or .cse2 (= |c_func_to_recursive_line_26_to_34_0_#in~x.base| c_func_to_recursive_line_26_to_34_0_~x.base)) (or .cse2 (= c_func_to_recursive_line_26_to_34_0_~x.offset |c_func_to_recursive_line_26_to_34_0_#in~x.offset|)) (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28| Int)) (or (= (+ 30 (* (div (+ (* .cse0 37) (* 15 .cse0 .cse0) .cse1) 6) 6)) (let ((.cse3 (select (select (store |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~y.base (store .cse4 c_func_to_recursive_line_26_to_34_0_~y.offset (+ 2 .cse0))) |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28|))) (+ (* (* .cse3 .cse3 .cse3) 2) (* (* .cse3 .cse3) 3) .cse3))) (not (= (let ((.cse5 (select (select .cse6 |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_28|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_28|))) (+ (* 3 (* .cse5 .cse5)) .cse5 (* 2 (* .cse5 .cse5 .cse5)))) .cse7)))) (= 0 (mod (+ .cse8 .cse9 (* 3 .cse8 .cse8)) 6)))))))))))) is different from false [2023-11-29 05:48:47,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117298739] [2023-11-29 05:48:47,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:48:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170828167] [2023-11-29 05:48:47,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170828167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:48:47,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:48:47,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-29 05:48:47,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447887494] [2023-11-29 05:48:47,097 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:47,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:48:47,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:47,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:48:47,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=405, Unknown=3, NotChecked=126, Total=600 [2023-11-29 05:48:47,098 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 6 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-29 05:48:51,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:48:55,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:48:59,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:48:59,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:48:59,820 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2023-11-29 05:48:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:48:59,821 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 6 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) Word has length 66 [2023-11-29 05:48:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:48:59,821 INFO L225 Difference]: With dead ends: 43 [2023-11-29 05:48:59,821 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 05:48:59,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=156, Invalid=975, Unknown=3, NotChecked=198, Total=1332 [2023-11-29 05:48:59,823 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:48:59,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 88 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 196 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2023-11-29 05:48:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 05:48:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 05:48:59,824 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 05:48:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 05:48:59,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2023-11-29 05:48:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:48:59,824 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 05:48:59,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 6 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-29 05:48:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 05:48:59,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 05:48:59,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 05:48:59,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:49:00,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 05:49:00,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 05:49:17,673 WARN L293 SmtUtils]: Spent 17.57s on a formula simplification. DAG size of input: 120 DAG size of output: 62 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 05:49:17,966 INFO L895 garLoopResultBuilder]: At program point L81(line 81) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#y~0#1.offset| 0) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= (select (select |#memory_int#2| |ULTIMATE.start_main_~#y~0#1.base|) 0) 0) (= (select (select |#memory_int#1| |ULTIMATE.start_main_~#x~0#1.base|) 0) 0)) [2023-11-29 05:49:17,966 INFO L899 garLoopResultBuilder]: For program point L82-1(line 82) no Hoare annotation was computed. [2023-11-29 05:49:17,966 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 05:49:17,966 INFO L899 garLoopResultBuilder]: For program point L81-1(line 81) no Hoare annotation was computed. [2023-11-29 05:49:17,966 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 05:49:17,966 INFO L895 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int#1| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse0 (select (select |#memory_int#2| |ULTIMATE.start_main_~#y~0#1.base|) |ULTIMATE.start_main_~#y~0#1.offset|))) (or (and (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem25#1|) (= |ULTIMATE.start_main_#t~mem25#1| |ULTIMATE.start_main_#t~mem24#1|) (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem25#1|) (= (* 6 |ULTIMATE.start_main_#t~mem19#1|) (+ (* (* |ULTIMATE.start_main_#t~mem25#1| |ULTIMATE.start_main_#t~mem25#1| |ULTIMATE.start_main_#t~mem25#1|) 2) (* 3 (* |ULTIMATE.start_main_#t~mem25#1| |ULTIMATE.start_main_#t~mem25#1|)) |ULTIMATE.start_main_#t~mem25#1|)) (= |ULTIMATE.start_main_#t~mem22#1| |ULTIMATE.start_main_#t~mem25#1|) (= (+ (* 3 (* .cse0 .cse0)) (* 2 (* .cse0 .cse0 .cse0)) .cse0) (* .cse1 6)) (= |ULTIMATE.start_main_#t~mem20#1| |ULTIMATE.start_main_#t~mem25#1|)) (and (= |ULTIMATE.start_main_#t~mem20#1| 0) (= .cse1 0) (= |ULTIMATE.start_main_#t~mem19#1| 0) (= .cse0 0) (= |ULTIMATE.start_main_#t~mem24#1| 0) (= |ULTIMATE.start_main_#t~mem21#1| 0) (= |ULTIMATE.start_main_#t~mem25#1| 0)))) [2023-11-29 05:49:17,967 INFO L895 garLoopResultBuilder]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (select |old(#memory_int#2)| |func_to_recursive_line_26_to_34_0_#in~y.base|))) (let ((.cse1 (select .cse0 |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (or (and (= |#memory_int#2| (store |old(#memory_int#2)| |func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse0 |func_to_recursive_line_26_to_34_0_#in~y.offset| (+ .cse1 1)))) (= (* (select (select |#memory_int#1| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|) 6) (let ((.cse2 (select (select |#memory_int#2| |func_to_recursive_line_26_to_34_0_#in~y.base|) |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ .cse2 (* 3 (* .cse2 .cse2)) (* (* .cse2 .cse2 .cse2) 2)))) (= func_to_recursive_line_26_to_34_0_~x.offset |func_to_recursive_line_26_to_34_0_#in~x.offset|) (= |#memory_int#2| (store |old(#memory_int#2)| func_to_recursive_line_26_to_34_0_~y.base (let ((.cse3 (select |old(#memory_int#2)| func_to_recursive_line_26_to_34_0_~y.base))) (store .cse3 func_to_recursive_line_26_to_34_0_~y.offset (+ (select .cse3 func_to_recursive_line_26_to_34_0_~y.offset) 1))))) (= |#memory_int#1| (store |old(#memory_int#1)| func_to_recursive_line_26_to_34_0_~x.base (let ((.cse4 (select |old(#memory_int#1)| func_to_recursive_line_26_to_34_0_~x.base))) (store .cse4 func_to_recursive_line_26_to_34_0_~x.offset (+ (let ((.cse5 (select (select |#memory_int#2| func_to_recursive_line_26_to_34_0_~y.base) func_to_recursive_line_26_to_34_0_~y.offset))) (* .cse5 .cse5)) (select .cse4 func_to_recursive_line_26_to_34_0_~x.offset)))))) (= |func_to_recursive_line_26_to_34_0_#in~x.base| func_to_recursive_line_26_to_34_0_~x.base)) (not (= (* 6 (select (select |old(#memory_int#1)| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|)) (+ (* 2 (* .cse1 .cse1 .cse1)) (* 3 (* .cse1 .cse1)) .cse1)))))) [2023-11-29 05:49:17,967 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 59) no Hoare annotation was computed. [2023-11-29 05:49:17,967 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (or (let ((.cse0 (select (select |#memory_int#2| |func_to_recursive_line_26_to_34_0_#in~y.base|) |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (and (= |func_to_recursive_line_26_to_34_0_#in~y.base| func_to_recursive_line_26_to_34_0_~y.base) (= |func_to_recursive_line_26_to_34_0_#t~mem9| .cse0) (= |func_to_recursive_line_26_to_34_0_#t~mem6| .cse0) (= |func_to_recursive_line_26_to_34_0_#t~mem5| .cse0) (= func_to_recursive_line_26_to_34_0_~x.offset |func_to_recursive_line_26_to_34_0_#in~x.offset|) (= |#memory_int#2| |old(#memory_int#2)|) (= func_to_recursive_line_26_to_34_0_~y.offset |func_to_recursive_line_26_to_34_0_#in~y.offset|) (= |func_to_recursive_line_26_to_34_0_#t~mem4| (select (select |#memory_int#1| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|)) (= |#memory_int#1| |old(#memory_int#1)|) (= |func_to_recursive_line_26_to_34_0_#t~mem8| .cse0) (= .cse0 |func_to_recursive_line_26_to_34_0_#t~mem10|) (= |func_to_recursive_line_26_to_34_0_#t~mem7| .cse0) (= |func_to_recursive_line_26_to_34_0_#in~x.base| func_to_recursive_line_26_to_34_0_~x.base))) (not (= (* 6 (select (select |old(#memory_int#1)| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|)) (let ((.cse1 (select (select |old(#memory_int#2)| |func_to_recursive_line_26_to_34_0_#in~y.base|) |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* 2 (* .cse1 .cse1 .cse1)) (* 3 (* .cse1 .cse1)) .cse1))))) [2023-11-29 05:49:17,967 INFO L899 garLoopResultBuilder]: For program point L52-1(line 52) no Hoare annotation was computed. [2023-11-29 05:49:17,967 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_26_to_34_0EXIT(lines 47 69) no Hoare annotation was computed. [2023-11-29 05:49:17,967 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 68) no Hoare annotation was computed. [2023-11-29 05:49:17,968 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 47 69) no Hoare annotation was computed. [2023-11-29 05:49:17,968 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 47 69) the Hoare annotation is: (or (and (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#1| |old(#memory_int#1)|)) (not (= (* 6 (select (select |old(#memory_int#1)| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|)) (let ((.cse0 (select (select |old(#memory_int#2)| |func_to_recursive_line_26_to_34_0_#in~y.base|) |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* 2 (* .cse0 .cse0 .cse0)) (* 3 (* .cse0 .cse0)) .cse0))))) [2023-11-29 05:49:17,968 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 43) no Hoare annotation was computed. [2023-11-29 05:49:17,968 INFO L899 garLoopResultBuilder]: For program point L33-2(lines 31 45) no Hoare annotation was computed. [2023-11-29 05:49:17,968 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 31 45) no Hoare annotation was computed. [2023-11-29 05:49:17,968 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 31 45) the Hoare annotation is: true [2023-11-29 05:49:17,968 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 38) no Hoare annotation was computed. [2023-11-29 05:49:17,969 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2023-11-29 05:49:17,972 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-11-29 05:49:17,974 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:49:17,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:49:17 BoogieIcfgContainer [2023-11-29 05:49:17,978 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:49:17,979 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:49:17,979 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:49:17,979 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:49:17,980 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:45:17" (3/4) ... [2023-11-29 05:49:17,982 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 05:49:17,986 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_26_to_34_0 [2023-11-29 05:49:17,986 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 05:49:17,991 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-29 05:49:17,992 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 05:49:17,992 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 05:49:17,992 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 05:49:18,086 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 05:49:18,087 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 05:49:18,087 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:49:18,088 INFO L158 Benchmark]: Toolchain (without parser) took 240897.29ms. Allocated memory was 157.3MB in the beginning and 195.0MB in the end (delta: 37.7MB). Free memory was 116.6MB in the beginning and 67.2MB in the end (delta: 49.4MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2023-11-29 05:49:18,088 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:49:18,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.14ms. Allocated memory is still 157.3MB. Free memory was 116.2MB in the beginning and 105.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 05:49:18,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.81ms. Allocated memory is still 157.3MB. Free memory was 105.2MB in the beginning and 104.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:49:18,089 INFO L158 Benchmark]: Boogie Preprocessor took 44.75ms. Allocated memory is still 157.3MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:49:18,090 INFO L158 Benchmark]: RCFGBuilder took 385.63ms. Allocated memory is still 157.3MB. Free memory was 101.9MB in the beginning and 129.7MB in the end (delta: -27.8MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2023-11-29 05:49:18,090 INFO L158 Benchmark]: TraceAbstraction took 240074.55ms. Allocated memory was 157.3MB in the beginning and 195.0MB in the end (delta: 37.7MB). Free memory was 128.8MB in the beginning and 72.4MB in the end (delta: 56.4MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. [2023-11-29 05:49:18,091 INFO L158 Benchmark]: Witness Printer took 107.99ms. Allocated memory is still 195.0MB. Free memory was 72.4MB in the beginning and 67.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 05:49:18,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.14ms. Allocated memory is still 157.3MB. Free memory was 116.2MB in the beginning and 105.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.81ms. Allocated memory is still 157.3MB. Free memory was 105.2MB in the beginning and 104.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.75ms. Allocated memory is still 157.3MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.63ms. Allocated memory is still 157.3MB. Free memory was 101.9MB in the beginning and 129.7MB in the end (delta: -27.8MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * TraceAbstraction took 240074.55ms. Allocated memory was 157.3MB in the beginning and 195.0MB in the end (delta: 37.7MB). Free memory was 128.8MB in the beginning and 72.4MB in the end (delta: 56.4MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. * Witness Printer took 107.99ms. Allocated memory is still 195.0MB. Free memory was 72.4MB in the beginning and 67.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 37]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 240.0s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 36.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 17.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 34.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 538 SdHoareTripleChecker+Invalid, 33.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 462 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1271 IncrementalHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 76 mSDtfsCounter, 1271 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 66.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, InterpolantAutomatonStates: 103, 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, 7 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 24 PreInvPairs, 32 NumberOfFragments, 460 HoareAnnotationTreeSize, 24 FomulaSimplifications, 235 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1474 FormulaSimplificationTreeSizeReductionInter, 17.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 182.0s InterpolantComputationTime, 236 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 246 ConstructedInterpolants, 4 QuantifiedInterpolants, 5030 SizeOfPredicates, 187 NumberOfNonLiveVariables, 1941 ConjunctsInSsa, 642 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 180/270 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 RESULT: Ultimate proved your program to be correct! [2023-11-29 05:49:18,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0547ca56-79a2-4ce5-85a3-a43eea21e39d/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