./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound2.i --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_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/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_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/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_8b858eaf-0f06-48a2-8955-a34be0c42181/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 1f6ee705374b9304c4ad35807ad9bde4a154c7f85315159d7da4519e0aae9554 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:27:35,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:27:36,047 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:27:36,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:27:36,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:27:36,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:27:36,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:27:36,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:27:36,076 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:27:36,076 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:27:36,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:27:36,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:27:36,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:27:36,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:27:36,079 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:27:36,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:27:36,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:27:36,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:27:36,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:27:36,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:27:36,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:27:36,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:27:36,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:27:36,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:27:36,084 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:27:36,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:27:36,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:27:36,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:27:36,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:27:36,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:27:36,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:27:36,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:27:36,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:27:36,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:27:36,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:27:36,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:27:36,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:27:36,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:27:36,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:27:36,099 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:27:36,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:27:36,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:27:36,100 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_8b858eaf-0f06-48a2-8955-a34be0c42181/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f6ee705374b9304c4ad35807ad9bde4a154c7f85315159d7da4519e0aae9554 [2023-11-29 04:27:36,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:27:36,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:27:36,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:27:36,359 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:27:36,360 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:27:36,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound2.i [2023-11-29 04:27:39,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:27:39,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:27:39,380 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound2.i [2023-11-29 04:27:39,390 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/data/e478c96a4/26cf3cda359944759cec37ee9f40766d/FLAG25319f12b [2023-11-29 04:27:39,407 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/data/e478c96a4/26cf3cda359944759cec37ee9f40766d [2023-11-29 04:27:39,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:27:39,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:27:39,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:27:39,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:27:39,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:27:39,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a4989b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39, skipping insertion in model container [2023-11-29 04:27:39,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:27:39,632 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_8b858eaf-0f06-48a2-8955-a34be0c42181/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound2.i[950,963] [2023-11-29 04:27:39,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:27:39,671 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:27:39,684 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_8b858eaf-0f06-48a2-8955-a34be0c42181/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound2.i[950,963] [2023-11-29 04:27:39,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:27:39,707 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:27:39,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39 WrapperNode [2023-11-29 04:27:39,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:27:39,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:27:39,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:27:39,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:27:39,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,740 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2023-11-29 04:27:39,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:27:39,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:27:39,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:27:39,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:27:39,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,753 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,767 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 04:27:39,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:27:39,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:27:39,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:27:39,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:27:39,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (1/1) ... [2023-11-29 04:27:39,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:27:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:39,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:27:39,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:27:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:27:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:27:39,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:27:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:27:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:27:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:27:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 04:27:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 04:27:39,907 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:27:39,910 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:27:40,059 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:27:40,081 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:27:40,081 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:27:40,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:27:40 BoogieIcfgContainer [2023-11-29 04:27:40,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:27:40,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:27:40,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:27:40,089 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:27:40,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:27:39" (1/3) ... [2023-11-29 04:27:40,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4d72ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:27:40, skipping insertion in model container [2023-11-29 04:27:40,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:27:39" (2/3) ... [2023-11-29 04:27:40,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4d72ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:27:40, skipping insertion in model container [2023-11-29 04:27:40,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:27:40" (3/3) ... [2023-11-29 04:27:40,092 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_valuebound2.i [2023-11-29 04:27:40,113 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:27:40,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:27:40,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:27:40,172 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;@30b5f91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:27:40,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:27:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 04:27:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 04:27:40,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:40,186 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:40,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:40,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:40,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1335240993, now seen corresponding path program 1 times [2023-11-29 04:27:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:40,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761275556] [2023-11-29 04:27:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:40,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:40,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761275556] [2023-11-29 04:27:40,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:27:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743577968] [2023-11-29 04:27:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:40,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:40,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:40,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:40,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:27:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:40,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:27:40,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:27:40,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:27:40,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743577968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:27:40,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:27:40,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:27:40,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791281951] [2023-11-29 04:27:40,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:27:40,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:27:40,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:40,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:27:40,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:27:40,483 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:27:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:27:40,505 INFO L93 Difference]: Finished difference Result 50 states and 79 transitions. [2023-11-29 04:27:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:27:40,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-11-29 04:27:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:27:40,514 INFO L225 Difference]: With dead ends: 50 [2023-11-29 04:27:40,514 INFO L226 Difference]: Without dead ends: 24 [2023-11-29 04:27:40,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:27:40,520 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:27:40,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:27:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-29 04:27:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-29 04:27:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:27:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-11-29 04:27:40,553 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2023-11-29 04:27:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:40,553 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-29 04:27:40,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:27:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-11-29 04:27:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 04:27:40,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:40,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:40,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:27:40,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:27:40,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:40,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1249624970, now seen corresponding path program 1 times [2023-11-29 04:27:40,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:40,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127371074] [2023-11-29 04:27:40,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:40,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:40,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:27:40,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843779093] [2023-11-29 04:27:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:40,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:40,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:40,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:40,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:27:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:40,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:27:40,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:27:41,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:27:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:27:41,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127371074] [2023-11-29 04:27:41,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:27:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843779093] [2023-11-29 04:27:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843779093] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:27:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:27:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-29 04:27:41,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99772657] [2023-11-29 04:27:41,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:27:41,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:27:41,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:41,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:27:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:27:41,383 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:27:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:27:42,391 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2023-11-29 04:27:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:27:42,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-11-29 04:27:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:27:42,394 INFO L225 Difference]: With dead ends: 36 [2023-11-29 04:27:42,394 INFO L226 Difference]: Without dead ends: 33 [2023-11-29 04:27:42,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:27:42,396 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:27:42,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:27:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-29 04:27:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-29 04:27:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 04:27:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-11-29 04:27:42,409 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 30 [2023-11-29 04:27:42,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:42,410 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-11-29 04:27:42,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:27:42,411 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-11-29 04:27:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 04:27:42,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:42,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:42,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:27:42,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 04:27:42,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:42,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1303469435, now seen corresponding path program 1 times [2023-11-29 04:27:42,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:42,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420548051] [2023-11-29 04:27:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:42,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:42,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:27:42,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133441332] [2023-11-29 04:27:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:42,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:42,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:42,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:42,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:27:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:42,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:27:42,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:27:42,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:27:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:27:43,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:43,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420548051] [2023-11-29 04:27:43,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:27:43,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133441332] [2023-11-29 04:27:43,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133441332] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:27:43,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:27:43,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-29 04:27:43,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768793954] [2023-11-29 04:27:43,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:27:43,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:27:43,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:43,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:27:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:27:43,132 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:27:47,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:27:51,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:27:53,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:27:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:27:53,195 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2023-11-29 04:27:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:27:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2023-11-29 04:27:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:27:53,197 INFO L225 Difference]: With dead ends: 47 [2023-11-29 04:27:53,197 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 04:27:53,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:27:53,200 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:27:53,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 106 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2023-11-29 04:27:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 04:27:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2023-11-29 04:27:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 04:27:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-11-29 04:27:53,210 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 32 [2023-11-29 04:27:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:53,211 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-11-29 04:27:53,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:27:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-11-29 04:27:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 04:27:53,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:53,213 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:53,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:27:53,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:53,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:53,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -158878427, now seen corresponding path program 1 times [2023-11-29 04:27:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:53,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836931492] [2023-11-29 04:27:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:53,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:27:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645900024] [2023-11-29 04:27:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:53,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:53,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:53,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:27:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:53,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:27:53,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:27:53,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:27:53,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836931492] [2023-11-29 04:27:53,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:27:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645900024] [2023-11-29 04:27:53,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645900024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:27:53,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:27:53,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:27:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981410144] [2023-11-29 04:27:53,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:27:53,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:27:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:27:53,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:27:53,556 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:27:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:27:53,583 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2023-11-29 04:27:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:27:53,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-11-29 04:27:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:27:53,585 INFO L225 Difference]: With dead ends: 47 [2023-11-29 04:27:53,585 INFO L226 Difference]: Without dead ends: 33 [2023-11-29 04:27:53,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:27:53,587 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:27:53,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:27:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-29 04:27:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-29 04:27:53,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 04:27:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-11-29 04:27:53,597 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 38 [2023-11-29 04:27:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:53,597 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-11-29 04:27:53,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:27:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-11-29 04:27:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 04:27:53,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:53,599 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:53,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:27:53,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:53,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash 599091488, now seen corresponding path program 1 times [2023-11-29 04:27:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936577038] [2023-11-29 04:27:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:53,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:27:53,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202077192] [2023-11-29 04:27:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:53,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:53,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:53,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:53,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:27:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:53,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:27:53,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 04:27:54,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:28:07,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936577038] [2023-11-29 04:28:07,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:28:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202077192] [2023-11-29 04:28:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202077192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:28:07,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:28:07,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 04:28:07,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687365556] [2023-11-29 04:28:07,452 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:28:07,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:28:07,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:28:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=198, Unknown=3, NotChecked=0, Total=240 [2023-11-29 04:28:07,453 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:28:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:08,678 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2023-11-29 04:28:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:28:08,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2023-11-29 04:28:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:08,680 INFO L225 Difference]: With dead ends: 48 [2023-11-29 04:28:08,680 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 04:28:08,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=56, Invalid=283, Unknown=3, NotChecked=0, Total=342 [2023-11-29 04:28:08,681 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:08,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 109 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:28:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 04:28:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-11-29 04:28:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 04:28:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2023-11-29 04:28:08,694 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 40 [2023-11-29 04:28:08,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:08,694 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2023-11-29 04:28:08,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:28:08,695 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2023-11-29 04:28:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 04:28:08,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:08,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:08,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:28:08,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:08,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:08,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2107284293, now seen corresponding path program 2 times [2023-11-29 04:28:08,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:08,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981359860] [2023-11-29 04:28:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:08,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:08,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:28:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374392410] [2023-11-29 04:28:08,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:28:08,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:28:08,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:28:08,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:28:09,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:28:09,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:28:09,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:28:09,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:28:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:28:09,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:28:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 04:28:10,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:10,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981359860] [2023-11-29 04:28:10,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:28:10,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374392410] [2023-11-29 04:28:10,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374392410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:28:10,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:28:10,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-11-29 04:28:10,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487326446] [2023-11-29 04:28:10,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:28:10,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:28:10,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:10,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:28:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:28:10,318 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 04:28:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:11,956 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2023-11-29 04:28:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:28:11,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 48 [2023-11-29 04:28:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:11,959 INFO L225 Difference]: With dead ends: 88 [2023-11-29 04:28:11,960 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 04:28:11,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:28:11,961 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:11,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 143 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:28:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 04:28:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2023-11-29 04:28:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 04:28:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-11-29 04:28:11,981 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 48 [2023-11-29 04:28:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:11,981 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-11-29 04:28:11,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 04:28:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-11-29 04:28:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:28:11,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:11,983 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:11,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:28:12,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:12,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:12,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1064658186, now seen corresponding path program 3 times [2023-11-29 04:28:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:12,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199460091] [2023-11-29 04:28:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:12,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:28:12,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225325829] [2023-11-29 04:28:12,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:28:12,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:12,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:28:12,207 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:28:12,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:28:12,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 04:28:12,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:28:12,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 04:28:12,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:28:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:28:13,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:28:24,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199460091] [2023-11-29 04:28:24,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:28:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225325829] [2023-11-29 04:28:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225325829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:28:24,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:28:24,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-29 04:28:24,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789216309] [2023-11-29 04:28:24,433 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:28:24,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:28:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:28:24,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=339, Unknown=2, NotChecked=0, Total=420 [2023-11-29 04:28:24,436 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:28:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:25,743 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2023-11-29 04:28:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:28:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 50 [2023-11-29 04:28:25,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:25,745 INFO L225 Difference]: With dead ends: 94 [2023-11-29 04:28:25,745 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 04:28:25,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=155, Invalid=599, Unknown=2, NotChecked=0, Total=756 [2023-11-29 04:28:25,747 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 51 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:25,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 220 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:28:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 04:28:25,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2023-11-29 04:28:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 04:28:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2023-11-29 04:28:25,763 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 50 [2023-11-29 04:28:25,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:25,764 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2023-11-29 04:28:25,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:28:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2023-11-29 04:28:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:28:25,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:25,766 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:25,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 04:28:25,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:25,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:25,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:25,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1007399884, now seen corresponding path program 1 times [2023-11-29 04:28:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:25,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707180074] [2023-11-29 04:28:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:25,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:28:25,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515594167] [2023-11-29 04:28:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:25,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:25,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:28:25,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:28:25,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:28:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:26,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 04:28:26,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:28:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 04:28:28,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:28:51,004 WARN L293 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:29:40,135 WARN L293 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:30:21,803 WARN L293 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:32:24,114 WARN L293 SmtUtils]: Spent 1.60m on a formula simplification. DAG size of input: 72 DAG size of output: 71 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:32:34,780 WARN L293 SmtUtils]: Spent 9.77s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:32:42,155 WARN L293 SmtUtils]: Spent 7.37s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:33:04,510 WARN L293 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:34:59,279 WARN L293 SmtUtils]: Spent 58.56s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:35:22,533 WARN L293 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:35:34,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707180074] [2023-11-29 04:35:34,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:35:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515594167] [2023-11-29 04:35:34,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515594167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:34,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:35:34,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-29 04:35:34,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083490882] [2023-11-29 04:35:34,682 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:35:34,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:35:34,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:35:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=411, Unknown=8, NotChecked=0, Total=506 [2023-11-29 04:35:34,684 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:35:54,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:35:54,592 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2023-11-29 04:35:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:35:54,593 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 50 [2023-11-29 04:35:54,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:35:54,594 INFO L225 Difference]: With dead ends: 62 [2023-11-29 04:35:54,594 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 04:35:54,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 248.0s TimeCoverageRelationStatistics Valid=128, Invalid=617, Unknown=11, NotChecked=0, Total=756 [2023-11-29 04:35:54,595 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:35:54,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 138 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:35:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 04:35:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-29 04:35:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 04:35:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2023-11-29 04:35:54,610 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 50 [2023-11-29 04:35:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:35:54,611 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2023-11-29 04:35:54,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:35:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2023-11-29 04:35:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:35:54,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:35:54,612 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:54,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:35:54,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:54,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:35:54,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1214903247, now seen corresponding path program 2 times [2023-11-29 04:35:54,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:54,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978525025] [2023-11-29 04:35:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:54,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:54,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:35:54,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551000487] [2023-11-29 04:35:54,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:35:54,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:54,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:54,828 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:54,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:35:54,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:35:54,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:35:54,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:35:54,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 17 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 04:35:55,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 04:36:04,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:04,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978525025] [2023-11-29 04:36:04,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:36:04,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551000487] [2023-11-29 04:36:04,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551000487] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:36:04,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:36:04,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-29 04:36:04,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264296424] [2023-11-29 04:36:04,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:36:04,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:36:04,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:36:04,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:36:04,356 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 21 states have internal predecessors, (47), 10 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2023-11-29 04:36:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:36:06,586 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2023-11-29 04:36:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:36:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 21 states have internal predecessors, (47), 10 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) Word has length 58 [2023-11-29 04:36:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:36:06,587 INFO L225 Difference]: With dead ends: 74 [2023-11-29 04:36:06,588 INFO L226 Difference]: Without dead ends: 52 [2023-11-29 04:36:06,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 04:36:06,589 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:36:06,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 313 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 04:36:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-29 04:36:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2023-11-29 04:36:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 04:36:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-11-29 04:36:06,599 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 58 [2023-11-29 04:36:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:36:06,600 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-11-29 04:36:06,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 21 states have internal predecessors, (47), 10 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2023-11-29 04:36:06,600 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-11-29 04:36:06,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:36:06,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:36:06,601 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:06,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 04:36:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 04:36:06,802 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:36:06,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1850092081, now seen corresponding path program 3 times [2023-11-29 04:36:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:06,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856543781] [2023-11-29 04:36:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:06,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:06,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:36:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359622803] [2023-11-29 04:36:06,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:36:06,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:06,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:06,813 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:06,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:36:08,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 04:36:08,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:08,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 04:36:08,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 04:37:25,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:16,616 WARN L293 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:38:16,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856543781] [2023-11-29 04:38:16,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359622803] [2023-11-29 04:38:16,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359622803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:16,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:16,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 04:38:16,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048280121] [2023-11-29 04:38:16,618 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:38:16,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:38:16,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:16,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:38:16,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=462, Unknown=8, NotChecked=0, Total=552 [2023-11-29 04:38:16,619 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:38:21,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:38:36,431 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:38:43,479 WARN L293 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:38:48,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:38:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:48,489 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-11-29 04:38:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:38:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 58 [2023-11-29 04:38:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:48,491 INFO L225 Difference]: With dead ends: 65 [2023-11-29 04:38:48,491 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 04:38:48,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 90.6s TimeCoverageRelationStatistics Valid=114, Invalid=689, Unknown=9, NotChecked=0, Total=812 [2023-11-29 04:38:48,492 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:48,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 204 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2023-11-29 04:38:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 04:38:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-29 04:38:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 states have internal predecessors, (45), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 04:38:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-11-29 04:38:48,508 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 58 [2023-11-29 04:38:48,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:48,508 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-11-29 04:38:48,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:38:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-11-29 04:38:48,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 04:38:48,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:48,509 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:48,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:38:48,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:38:48,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:48,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:48,711 INFO L85 PathProgramCache]: Analyzing trace with hash -435834262, now seen corresponding path program 4 times [2023-11-29 04:38:48,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:48,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562839342] [2023-11-29 04:38:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:48,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:48,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:48,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852749454] [2023-11-29 04:38:48,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:38:48,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:48,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:48,724 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:48,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:38:48,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:38:48,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:38:48,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 04:38:48,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 04:38:50,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 04:38:54,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562839342] [2023-11-29 04:38:54,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852749454] [2023-11-29 04:38:54,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852749454] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:38:54,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:38:54,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 27 [2023-11-29 04:38:54,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915546644] [2023-11-29 04:38:54,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:38:54,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 04:38:54,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:54,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:38:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:38:54,835 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 27 states, 25 states have (on average 2.28) internal successors, (57), 22 states have internal predecessors, (57), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 04:38:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:56,562 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-11-29 04:38:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:38:56,563 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.28) internal successors, (57), 22 states have internal predecessors, (57), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) Word has length 66 [2023-11-29 04:38:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:56,563 INFO L225 Difference]: With dead ends: 60 [2023-11-29 04:38:56,563 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 04:38:56,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:38:56,565 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:56,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 248 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:38:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 04:38:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 04:38:56,566 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 04:38:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 04:38:56,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2023-11-29 04:38:56,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:56,566 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:38:56,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.28) internal successors, (57), 22 states have internal predecessors, (57), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 04:38:56,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 04:38:56,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 04:38:56,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 04:38:56,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:38:56,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:38:56,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 04:39:06,367 WARN L293 SmtUtils]: Spent 8.94s on a formula simplification. DAG size of input: 148 DAG size of output: 70 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 04:39:12,424 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 148 DAG size of output: 70 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 04:39:12,427 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2023-11-29 04:39:12,428 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 04:39:12,428 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2023-11-29 04:39:12,428 INFO L895 garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2147483646)) [2023-11-29 04:39:12,428 INFO L902 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2023-11-29 04:39:12,428 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2023-11-29 04:39:12,428 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 49) no Hoare annotation was computed. [2023-11-29 04:39:12,429 INFO L895 garLoopResultBuilder]: At program point L46-2(lines 41 50) the Hoare annotation is: (let ((.cse11 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse14 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse8 (+ .cse11 1)) (.cse15 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse10 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse16 (* 2 (mod |ULTIMATE.start_main_~B~0#1| 2147483648)))) (let ((.cse1 (<= .cse16 .cse11)) (.cse0 (<= .cse10 .cse11)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= .cse8 .cse15)) (.cse6 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~b~0#1| 2147483647)) (.cse9 (* 4 (mod |ULTIMATE.start_main_~B~0#1| 1073741824))) (.cse7 (<= .cse10 (* 2 |ULTIMATE.start_main_~b~0#1|))) (.cse2 (<= .cse14 2)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse13 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= .cse8 .cse9)) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~B~0#1| 4))) (and (= |ULTIMATE.start_main_~b~0#1| 1) (= (div (mod (+ (* 4294967295 |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) 4294967296) 2) 1) .cse2 (= .cse10 1) (= 2 |ULTIMATE.start_main_~q~0#1|) (<= (div .cse11 2) 1)) (and .cse0 (= |ULTIMATE.start_main_~b~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) .cse2 .cse3 .cse5 .cse6) (and .cse2 .cse12 .cse13 .cse4 (<= (+ .cse14 1) .cse9) .cse7 (<= .cse15 .cse14) (<= .cse16 .cse14)) (and (<= 1 .cse10) .cse2 .cse12 .cse13 (= .cse15 .cse10)) (and (forall ((|ULTIMATE.start_main_~b~0#1| Int)) (= .cse14 (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296))) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|)))))) [2023-11-29 04:39:12,429 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse11 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse14 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse8 (+ .cse11 1)) (.cse15 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse10 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse16 (* 2 (mod |ULTIMATE.start_main_~B~0#1| 2147483648)))) (let ((.cse1 (<= .cse16 .cse11)) (.cse0 (<= .cse10 .cse11)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= .cse8 .cse15)) (.cse6 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~b~0#1| 2147483647)) (.cse9 (* 4 (mod |ULTIMATE.start_main_~B~0#1| 1073741824))) (.cse7 (<= .cse10 (* 2 |ULTIMATE.start_main_~b~0#1|))) (.cse2 (<= .cse14 2)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse13 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= .cse8 .cse9)) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~B~0#1| 4))) (and (= |ULTIMATE.start_main_~b~0#1| 1) (= (div (mod (+ (* 4294967295 |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) 4294967296) 2) 1) .cse2 (= .cse10 1) (= 2 |ULTIMATE.start_main_~q~0#1|) (<= (div .cse11 2) 1)) (and .cse0 (= |ULTIMATE.start_main_~b~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) .cse2 .cse3 .cse5 .cse6) (and .cse2 .cse12 .cse13 .cse4 (<= (+ .cse14 1) .cse9) .cse7 (<= .cse15 .cse14) (<= .cse16 .cse14)) (and (<= 1 .cse10) .cse2 .cse12 .cse13 (= .cse15 .cse10)) (and (forall ((|ULTIMATE.start_main_~b~0#1| Int)) (= .cse14 (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296))) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|)))))) [2023-11-29 04:39:12,429 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 04:39:12,429 INFO L899 garLoopResultBuilder]: For program point L42-1(lines 41 50) no Hoare annotation was computed. [2023-11-29 04:39:12,429 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-11-29 04:39:12,429 INFO L895 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2147483646)) [2023-11-29 04:39:12,429 INFO L899 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2023-11-29 04:39:12,429 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 41 50) the Hoare annotation is: (= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296)) [2023-11-29 04:39:12,430 INFO L895 garLoopResultBuilder]: At program point L37-2(lines 37 40) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse5 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse0 (<= .cse6 .cse5)) (.cse1 (<= 1 .cse6)) (.cse2 (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~b~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= (* 2 (mod |ULTIMATE.start_main_~B~0#1| 2147483648)) .cse5) .cse2 .cse3 (<= (+ .cse5 1) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) .cse4 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~B~0#1| 4))) (and .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|) (<= .cse6 2147483646) .cse4)))) [2023-11-29 04:39:12,430 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-11-29 04:39:12,430 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2023-11-29 04:39:12,430 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 17) the Hoare annotation is: true [2023-11-29 04:39:12,430 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2023-11-29 04:39:12,430 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2023-11-29 04:39:12,430 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2023-11-29 04:39:12,430 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2023-11-29 04:39:12,430 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2023-11-29 04:39:12,431 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2023-11-29 04:39:12,431 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-29 04:39:12,433 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1] [2023-11-29 04:39:12,434 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:39:12,451 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall ULTIMATE.start_main_~b~0#1 : int :: ~A~0 % 4294967296 == (~r~0 + ULTIMATE.start_main_~b~0#1 * ~q~0) % 4294967296) could not be translated [2023-11-29 04:39:12,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:39:12 BoogieIcfgContainer [2023-11-29 04:39:12,452 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:39:12,452 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:39:12,452 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:39:12,453 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:39:12,453 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:27:40" (3/4) ... [2023-11-29 04:39:12,455 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:39:12,457 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-29 04:39:12,457 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 04:39:12,461 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-29 04:39:12,461 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 04:39:12,461 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 04:39:12,461 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 04:39:12,544 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:39:12,545 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:39:12,545 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:39:12,546 INFO L158 Benchmark]: Toolchain (without parser) took 693133.98ms. Allocated memory was 136.3MB in the beginning and 192.9MB in the end (delta: 56.6MB). Free memory was 91.2MB in the beginning and 53.7MB in the end (delta: 37.5MB). Peak memory consumption was 97.3MB. Max. memory is 16.1GB. [2023-11-29 04:39:12,546 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 136.3MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:39:12,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.54ms. Allocated memory is still 136.3MB. Free memory was 91.0MB in the beginning and 80.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:39:12,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.08ms. Allocated memory is still 136.3MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:39:12,547 INFO L158 Benchmark]: Boogie Preprocessor took 37.86ms. Allocated memory is still 136.3MB. Free memory was 78.6MB in the beginning and 76.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:39:12,548 INFO L158 Benchmark]: RCFGBuilder took 302.11ms. Allocated memory is still 136.3MB. Free memory was 76.9MB in the beginning and 65.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 04:39:12,548 INFO L158 Benchmark]: TraceAbstraction took 692366.58ms. Allocated memory was 136.3MB in the beginning and 192.9MB in the end (delta: 56.6MB). Free memory was 65.0MB in the beginning and 57.9MB in the end (delta: 7.1MB). Peak memory consumption was 77.0MB. Max. memory is 16.1GB. [2023-11-29 04:39:12,548 INFO L158 Benchmark]: Witness Printer took 92.76ms. Allocated memory is still 192.9MB. Free memory was 57.9MB in the beginning and 53.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:39:12,550 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 136.3MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.54ms. Allocated memory is still 136.3MB. Free memory was 91.0MB in the beginning and 80.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.08ms. Allocated memory is still 136.3MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.86ms. Allocated memory is still 136.3MB. Free memory was 78.6MB in the beginning and 76.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.11ms. Allocated memory is still 136.3MB. Free memory was 76.9MB in the beginning and 65.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 692366.58ms. Allocated memory was 136.3MB in the beginning and 192.9MB in the end (delta: 56.6MB). Free memory was 65.0MB in the beginning and 57.9MB in the end (delta: 7.1MB). Peak memory consumption was 77.0MB. Max. memory is 16.1GB. * Witness Printer took 92.76ms. Allocated memory is still 192.9MB. Free memory was 57.9MB in the beginning and 53.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall ULTIMATE.start_main_~b~0#1 : int :: ~A~0 % 4294967296 == (~r~0 + ULTIMATE.start_main_~b~0#1 * ~q~0) % 4294967296) could not be translated * 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: 21]: 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, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 692.3s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 71.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 15.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 265 SdHoareTripleChecker+Valid, 29.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 254 mSDsluCounter, 1662 SdHoareTripleChecker+Invalid, 28.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1399 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1622 IncrementalHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 263 mSDtfsCounter, 1622 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 826 GetRequests, 616 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 369.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=8, InterpolantAutomatonStates: 123, 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, 11 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 50 PreInvPairs, 81 NumberOfFragments, 662 HoareAnnotationTreeSize, 50 FomulaSimplifications, 1012 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 1326 FormulaSimplificationTreeSizeReductionInter, 15.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 599.7s InterpolantComputationTime, 528 NumberOfCodeBlocks, 508 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 717 ConstructedInterpolants, 6 QuantifiedInterpolants, 8026 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1151 ConjunctsInSsa, 278 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 574/744 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((B % 4294967296) <= (r % 4294967296)) && (b == (2 * B))) && (1 <= (B % 4294967296))) && ((A % 4294967296) <= 2)) && (q == 0)) && (A == r)) || ((((((((B % 4294967296) <= (r % 4294967296)) && ((2 * (B % 2147483648)) <= (r % 4294967296))) && ((A % 4294967296) <= 2)) && (q == 0)) && (((r % 4294967296) + 1) <= (b % 4294967296))) && (A == r)) && (b == (B * 4)))) || ((((((1 <= (B % 4294967296)) && ((A % 4294967296) <= 2)) && (q == 0)) && (B == b)) && ((B % 4294967296) <= 2147483646)) && (A == r))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((((((((B % 4294967296) <= (r % 4294967296)) && ((2 * (B % 2147483648)) <= (r % 4294967296))) && ((A % 4294967296) <= 2)) && (q == 0)) && (b <= 2147483647)) && (((r % 4294967296) + 1) <= (b % 4294967296))) && (A == r)) && ((B % 4294967296) <= (2 * b))) && (((r % 4294967296) + 1) <= (4 * (B % 1073741824)))) || ((((((((B % 4294967296) <= (r % 4294967296)) && ((2 * (B % 2147483648)) <= (r % 4294967296))) && ((A % 4294967296) <= 2)) && (q == 0)) && (((r % 4294967296) + 1) <= (b % 4294967296))) && (A == r)) && (b == (B * 4)))) || ((((((b == 1) && (((((4294967295 * r) + A) % 4294967296) / 2) == 1)) && ((A % 4294967296) <= 2)) && ((B % 4294967296) == 1)) && (2 == q)) && (((r % 4294967296) / 2) <= 1))) || (((((((B % 4294967296) <= (r % 4294967296)) && (b == (2 * B))) && ((A % 4294967296) <= 2)) && (q == 0)) && (((r % 4294967296) + 1) <= (b % 4294967296))) && (A == r))) || (((((((((A % 4294967296) <= 2) && (q == 1)) && ((b + r) == A)) && (b <= 2147483647)) && (((A % 4294967296) + 1) <= (4 * (B % 1073741824)))) && ((B % 4294967296) <= (2 * b))) && ((b % 4294967296) <= (A % 4294967296))) && ((2 * (B % 2147483648)) <= (A % 4294967296)))) || (((((1 <= (B % 4294967296)) && ((A % 4294967296) <= 2)) && (q == 1)) && ((b + r) == A)) && ((b % 4294967296) == (B % 4294967296)))) || (B == b)) RESULT: Ultimate proved your program to be correct! [2023-11-29 04:39:12,763 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-11-29 04:39:12,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b858eaf-0f06-48a2-8955-a34be0c42181/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE