./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/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_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/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_cf988059-0575-4072-bb99-fe0c91a1b1e0/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 f6efe7ecfa2f8653fe2834057cfe06e476c7bb5b1002416a0f080ee317604656 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:34:00,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:34:00,104 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:34:00,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:34:00,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:34:00,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:34:00,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:34:00,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:34:00,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:34:00,134 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:34:00,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:34:00,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:34:00,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:34:00,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:34:00,137 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:34:00,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:34:00,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:34:00,139 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:34:00,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:34:00,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:34:00,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:34:00,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:34:00,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:34:00,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:34:00,142 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:34:00,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:34:00,143 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:34:00,144 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:34:00,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:34:00,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:34:00,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:34:00,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:34:00,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:34:00,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:34:00,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:34:00,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:34:00,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:34:00,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:34:00,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:34:00,147 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:34:00,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:34:00,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:34:00,148 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_cf988059-0575-4072-bb99-fe0c91a1b1e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6efe7ecfa2f8653fe2834057cfe06e476c7bb5b1002416a0f080ee317604656 [2023-11-29 02:34:00,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:34:00,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:34:00,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:34:00,374 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:34:00,374 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:34:00,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i [2023-11-29 02:34:03,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:34:03,260 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:34:03,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i [2023-11-29 02:34:03,272 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/data/dc0ff4a3e/ed3788df6b3a468db45c78841be6aced/FLAG9e58a9abf [2023-11-29 02:34:03,291 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/data/dc0ff4a3e/ed3788df6b3a468db45c78841be6aced [2023-11-29 02:34:03,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:34:03,294 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:34:03,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:34:03,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:34:03,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:34:03,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730da548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03, skipping insertion in model container [2023-11-29 02:34:03,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,339 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:34:03,474 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_cf988059-0575-4072-bb99-fe0c91a1b1e0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i[916,929] [2023-11-29 02:34:03,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:34:03,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:34:03,577 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_cf988059-0575-4072-bb99-fe0c91a1b1e0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i[916,929] [2023-11-29 02:34:03,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:34:03,636 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:34:03,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03 WrapperNode [2023-11-29 02:34:03,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:34:03,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:34:03,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:34:03,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:34:03,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,708 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 262 [2023-11-29 02:34:03,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:34:03,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:34:03,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:34:03,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:34:03,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,748 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 02:34:03,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:34:03,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:34:03,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:34:03,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:34:03,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:34:03,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:03,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:34:03,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:34:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:34:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:34:03,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:34:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:34:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:34:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:34:03,941 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:34:03,943 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:34:04,385 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:34:04,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:34:04,423 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:34:04,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:34:04 BoogieIcfgContainer [2023-11-29 02:34:04,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:34:04,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:34:04,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:34:04,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:34:04,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:34:03" (1/3) ... [2023-11-29 02:34:04,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630c1f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:34:04, skipping insertion in model container [2023-11-29 02:34:04,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (2/3) ... [2023-11-29 02:34:04,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630c1f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:34:04, skipping insertion in model container [2023-11-29 02:34:04,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:34:04" (3/3) ... [2023-11-29 02:34:04,433 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-57.i [2023-11-29 02:34:04,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:34:04,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:34:04,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:34:04,512 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;@3312e46a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:34:04,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:34:04,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 64 states have (on average 1.515625) internal successors, (97), 65 states have internal predecessors, (97), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 02:34:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 02:34:04,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:04,537 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:04,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:04,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash -223966472, now seen corresponding path program 1 times [2023-11-29 02:34:04,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:04,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084244174] [2023-11-29 02:34:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:04,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:04,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:04,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084244174] [2023-11-29 02:34:04,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:34:04,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131171284] [2023-11-29 02:34:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:04,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:04,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:04,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:04,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:34:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:05,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:34:05,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-11-29 02:34:05,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:05,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131171284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:05,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:05,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:34:05,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858308167] [2023-11-29 02:34:05,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:05,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:34:05,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:34:05,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:34:05,126 INFO L87 Difference]: Start difference. First operand has 103 states, 64 states have (on average 1.515625) internal successors, (97), 65 states have internal predecessors, (97), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-29 02:34:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:05,177 INFO L93 Difference]: Finished difference Result 203 states and 372 transitions. [2023-11-29 02:34:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:34:05,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) Word has length 223 [2023-11-29 02:34:05,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:05,189 INFO L225 Difference]: With dead ends: 203 [2023-11-29 02:34:05,189 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 02:34:05,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 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 02:34:05,198 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:05,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:34:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 02:34:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-29 02:34:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 63 states have internal predecessors, (92), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 02:34:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 164 transitions. [2023-11-29 02:34:05,247 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 164 transitions. Word has length 223 [2023-11-29 02:34:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:05,248 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 164 transitions. [2023-11-29 02:34:05,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-29 02:34:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 164 transitions. [2023-11-29 02:34:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 02:34:05,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:05,255 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:05,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:34:05,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:34:05,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:05,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash 915149184, now seen corresponding path program 1 times [2023-11-29 02:34:05,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:05,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691498255] [2023-11-29 02:34:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:05,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:05,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527237981] [2023-11-29 02:34:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:05,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:05,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:05,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:34:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:05,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:34:05,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 915 proven. 81 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2023-11-29 02:34:06,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-29 02:34:06,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:06,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691498255] [2023-11-29 02:34:06,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527237981] [2023-11-29 02:34:06,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527237981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:34:06,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:34:06,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:34:06,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144878307] [2023-11-29 02:34:06,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:06,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:34:06,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:06,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:34:06,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:34:06,456 INFO L87 Difference]: Start difference. First operand 101 states and 164 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-11-29 02:34:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:06,838 INFO L93 Difference]: Finished difference Result 222 states and 355 transitions. [2023-11-29 02:34:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:34:06,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 223 [2023-11-29 02:34:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:06,843 INFO L225 Difference]: With dead ends: 222 [2023-11-29 02:34:06,843 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 02:34:06,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:34:06,846 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 70 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:06,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 304 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:34:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 02:34:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2023-11-29 02:34:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 71 states have internal predecessors, (97), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 02:34:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 185 transitions. [2023-11-29 02:34:06,872 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 185 transitions. Word has length 223 [2023-11-29 02:34:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:06,874 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 185 transitions. [2023-11-29 02:34:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-11-29 02:34:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 185 transitions. [2023-11-29 02:34:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 02:34:06,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:06,879 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:06,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:34:07,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 02:34:07,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:07,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash -606540000, now seen corresponding path program 1 times [2023-11-29 02:34:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:07,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279006532] [2023-11-29 02:34:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:07,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:07,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:07,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224050413] [2023-11-29 02:34:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:07,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:07,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:07,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:07,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:34:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:07,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:34:07,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1253 proven. 42 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-29 02:34:07,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-29 02:34:07,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:07,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279006532] [2023-11-29 02:34:07,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:07,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224050413] [2023-11-29 02:34:07,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224050413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:34:07,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:34:07,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 02:34:07,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401734264] [2023-11-29 02:34:07,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:07,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:34:07,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:07,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:34:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:34:07,761 INFO L87 Difference]: Start difference. First operand 117 states and 185 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-11-29 02:34:08,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:08,074 INFO L93 Difference]: Finished difference Result 229 states and 356 transitions. [2023-11-29 02:34:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:34:08,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 224 [2023-11-29 02:34:08,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:08,079 INFO L225 Difference]: With dead ends: 229 [2023-11-29 02:34:08,079 INFO L226 Difference]: Without dead ends: 125 [2023-11-29 02:34:08,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:34:08,082 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 145 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:08,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 258 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:34:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-29 02:34:08,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2023-11-29 02:34:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 74 states have internal predecessors, (98), 44 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 02:34:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 186 transitions. [2023-11-29 02:34:08,108 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 186 transitions. Word has length 224 [2023-11-29 02:34:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:08,109 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 186 transitions. [2023-11-29 02:34:08,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-11-29 02:34:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 186 transitions. [2023-11-29 02:34:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 02:34:08,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:08,114 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:08,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:34:08,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 02:34:08,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:08,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2046409878, now seen corresponding path program 1 times [2023-11-29 02:34:08,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:08,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973666724] [2023-11-29 02:34:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:08,364 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329338405] [2023-11-29 02:34:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:08,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:08,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:08,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:08,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:34:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:08,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:34:08,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1526 proven. 108 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-11-29 02:34:09,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:09,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:09,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973666724] [2023-11-29 02:34:09,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:09,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329338405] [2023-11-29 02:34:09,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329338405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:34:09,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:34:09,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 02:34:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875597652] [2023-11-29 02:34:09,898 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:09,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:34:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:09,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:34:09,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:34:09,901 INFO L87 Difference]: Start difference. First operand 121 states and 186 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-29 02:34:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:11,485 INFO L93 Difference]: Finished difference Result 461 states and 670 transitions. [2023-11-29 02:34:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 02:34:11,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 225 [2023-11-29 02:34:11,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:11,490 INFO L225 Difference]: With dead ends: 461 [2023-11-29 02:34:11,490 INFO L226 Difference]: Without dead ends: 353 [2023-11-29 02:34:11,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=417, Invalid=1305, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 02:34:11,493 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 394 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:11,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 707 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:34:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-29 02:34:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 326. [2023-11-29 02:34:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 205 states have (on average 1.2878048780487805) internal successors, (264), 208 states have internal predecessors, (264), 106 states have call successors, (106), 14 states have call predecessors, (106), 14 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-29 02:34:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 476 transitions. [2023-11-29 02:34:11,560 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 476 transitions. Word has length 225 [2023-11-29 02:34:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:11,561 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 476 transitions. [2023-11-29 02:34:11,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-29 02:34:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 476 transitions. [2023-11-29 02:34:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 02:34:11,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:11,565 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:11,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:34:11,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:11,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:11,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2099574898, now seen corresponding path program 1 times [2023-11-29 02:34:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349737305] [2023-11-29 02:34:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:11,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:11,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:11,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735899093] [2023-11-29 02:34:11,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:11,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:11,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:11,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:11,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:34:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:12,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 02:34:12,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1629 proven. 117 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-11-29 02:34:12,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 96 proven. 9 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-29 02:34:13,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349737305] [2023-11-29 02:34:13,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735899093] [2023-11-29 02:34:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735899093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:34:13,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:34:13,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2023-11-29 02:34:13,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614712540] [2023-11-29 02:34:13,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:13,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:34:13,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:13,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:34:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:34:13,114 INFO L87 Difference]: Start difference. First operand 326 states and 476 transitions. Second operand has 16 states, 16 states have (on average 6.1875) internal successors, (99), 16 states have internal predecessors, (99), 5 states have call successors, (57), 4 states have call predecessors, (57), 8 states have return successors, (58), 5 states have call predecessors, (58), 5 states have call successors, (58) [2023-11-29 02:34:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:15,152 INFO L93 Difference]: Finished difference Result 963 states and 1351 transitions. [2023-11-29 02:34:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 02:34:15,153 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 16 states have internal predecessors, (99), 5 states have call successors, (57), 4 states have call predecessors, (57), 8 states have return successors, (58), 5 states have call predecessors, (58), 5 states have call successors, (58) Word has length 225 [2023-11-29 02:34:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:15,159 INFO L225 Difference]: With dead ends: 963 [2023-11-29 02:34:15,159 INFO L226 Difference]: Without dead ends: 650 [2023-11-29 02:34:15,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1023, Invalid=3267, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 02:34:15,164 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 701 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:15,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 665 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:34:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-11-29 02:34:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 473. [2023-11-29 02:34:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 302 states have (on average 1.2615894039735098) internal successors, (381), 305 states have internal predecessors, (381), 142 states have call successors, (142), 28 states have call predecessors, (142), 28 states have return successors, (142), 139 states have call predecessors, (142), 142 states have call successors, (142) [2023-11-29 02:34:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 665 transitions. [2023-11-29 02:34:15,259 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 665 transitions. Word has length 225 [2023-11-29 02:34:15,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:15,260 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 665 transitions. [2023-11-29 02:34:15,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 16 states have internal predecessors, (99), 5 states have call successors, (57), 4 states have call predecessors, (57), 8 states have return successors, (58), 5 states have call predecessors, (58), 5 states have call successors, (58) [2023-11-29 02:34:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 665 transitions. [2023-11-29 02:34:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 02:34:15,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:15,265 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:15,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:34:15,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:15,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:15,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1608586384, now seen corresponding path program 1 times [2023-11-29 02:34:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:15,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465478337] [2023-11-29 02:34:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:15,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:15,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:15,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796097379] [2023-11-29 02:34:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:15,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:15,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:15,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:34:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:15,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:34:15,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 833 proven. 84 refuted. 0 times theorem prover too weak. 1603 trivial. 0 not checked. [2023-11-29 02:34:15,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-29 02:34:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:16,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465478337] [2023-11-29 02:34:16,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:16,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796097379] [2023-11-29 02:34:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796097379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:34:16,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:34:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 02:34:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517313092] [2023-11-29 02:34:16,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:16,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:34:16,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:34:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:34:16,234 INFO L87 Difference]: Start difference. First operand 473 states and 665 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-11-29 02:34:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:17,096 INFO L93 Difference]: Finished difference Result 1909 states and 2583 transitions. [2023-11-29 02:34:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 02:34:17,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 225 [2023-11-29 02:34:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:17,107 INFO L225 Difference]: With dead ends: 1909 [2023-11-29 02:34:17,107 INFO L226 Difference]: Without dead ends: 1449 [2023-11-29 02:34:17,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2023-11-29 02:34:17,110 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 427 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:17,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 692 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:34:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-11-29 02:34:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 696. [2023-11-29 02:34:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 438 states have (on average 1.2168949771689497) internal successors, (533), 441 states have internal predecessors, (533), 206 states have call successors, (206), 51 states have call predecessors, (206), 51 states have return successors, (206), 203 states have call predecessors, (206), 206 states have call successors, (206) [2023-11-29 02:34:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 945 transitions. [2023-11-29 02:34:17,203 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 945 transitions. Word has length 225 [2023-11-29 02:34:17,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:17,204 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 945 transitions. [2023-11-29 02:34:17,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-11-29 02:34:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 945 transitions. [2023-11-29 02:34:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 02:34:17,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:17,207 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:17,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:34:17,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:17,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:17,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:17,408 INFO L85 PathProgramCache]: Analyzing trace with hash 312172509, now seen corresponding path program 1 times [2023-11-29 02:34:17,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:17,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798420329] [2023-11-29 02:34:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:17,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:17,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73002701] [2023-11-29 02:34:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:17,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:17,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:17,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:17,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:34:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:17,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:34:17,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-11-29 02:34:17,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:17,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:17,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798420329] [2023-11-29 02:34:17,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:17,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73002701] [2023-11-29 02:34:17,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73002701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:17,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:17,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:34:17,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336236685] [2023-11-29 02:34:17,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:17,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:34:17,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:34:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:17,817 INFO L87 Difference]: Start difference. First operand 696 states and 945 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-29 02:34:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:18,003 INFO L93 Difference]: Finished difference Result 1812 states and 2467 transitions. [2023-11-29 02:34:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:34:18,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226 [2023-11-29 02:34:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:18,013 INFO L225 Difference]: With dead ends: 1812 [2023-11-29 02:34:18,014 INFO L226 Difference]: Without dead ends: 1209 [2023-11-29 02:34:18,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 224 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 02:34:18,017 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 47 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:18,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 300 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:34:18,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2023-11-29 02:34:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1174. [2023-11-29 02:34:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 734 states have (on average 1.2002724795640327) internal successors, (881), 737 states have internal predecessors, (881), 350 states have call successors, (350), 89 states have call predecessors, (350), 89 states have return successors, (350), 347 states have call predecessors, (350), 350 states have call successors, (350) [2023-11-29 02:34:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1581 transitions. [2023-11-29 02:34:18,230 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1581 transitions. Word has length 226 [2023-11-29 02:34:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:18,230 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1581 transitions. [2023-11-29 02:34:18,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-29 02:34:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1581 transitions. [2023-11-29 02:34:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 02:34:18,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:18,233 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:18,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:34:18,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:18,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:18,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:18,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1217221343, now seen corresponding path program 1 times [2023-11-29 02:34:18,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:18,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727036990] [2023-11-29 02:34:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:18,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:18,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:18,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041388948] [2023-11-29 02:34:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:18,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:18,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:18,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:34:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:18,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 02:34:18,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1669 proven. 186 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2023-11-29 02:34:37,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:35:16,791 WARN L293 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-11-29 02:35:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-11-29 02:35:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727036990] [2023-11-29 02:35:59,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041388948] [2023-11-29 02:35:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041388948] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:35:59,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:35:59,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [23] total 34 [2023-11-29 02:35:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107625063] [2023-11-29 02:35:59,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:59,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:35:59,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:35:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 02:35:59,360 INFO L87 Difference]: Start difference. First operand 1174 states and 1581 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-29 02:36:06,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:36:49,068 WARN L293 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 199 DAG size of output: 195 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:38:11,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:38:38,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:38:47,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:38:51,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:38:52,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:38:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:53,036 INFO L93 Difference]: Finished difference Result 2790 states and 3789 transitions. [2023-11-29 02:38:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 02:38:53,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226 [2023-11-29 02:38:53,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:53,050 INFO L225 Difference]: With dead ends: 2790 [2023-11-29 02:38:53,050 INFO L226 Difference]: Without dead ends: 1946 [2023-11-29 02:38:53,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2493 ImplicationChecksByTransitivity, 143.7s TimeCoverageRelationStatistics Valid=1239, Invalid=5901, Unknown=0, NotChecked=0, Total=7140 [2023-11-29 02:38:53,057 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 768 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 66 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:53,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1267 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 986 Invalid, 4 Unknown, 0 Unchecked, 37.4s Time] [2023-11-29 02:38:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2023-11-29 02:38:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1215. [2023-11-29 02:38:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 775 states have (on average 1.2180645161290322) internal successors, (944), 778 states have internal predecessors, (944), 350 states have call successors, (350), 89 states have call predecessors, (350), 89 states have return successors, (350), 347 states have call predecessors, (350), 350 states have call successors, (350) [2023-11-29 02:38:53,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1644 transitions. [2023-11-29 02:38:53,282 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1644 transitions. Word has length 226 [2023-11-29 02:38:53,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:53,283 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1644 transitions. [2023-11-29 02:38:53,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-29 02:38:53,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1644 transitions. [2023-11-29 02:38:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 02:38:53,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:53,286 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:38:53,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:38:53,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:38:53,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:53,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1610248353, now seen corresponding path program 1 times [2023-11-29 02:38:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:53,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066768] [2023-11-29 02:38:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:53,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:53,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:38:53,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549727143] [2023-11-29 02:38:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:53,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:38:53,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:38:53,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:38:53,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:38:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:53,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 02:38:53,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:39:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1529 proven. 135 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2023-11-29 02:39:08,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:40:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-11-29 02:40:06,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066768] [2023-11-29 02:40:06,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:40:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549727143] [2023-11-29 02:40:06,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549727143] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:40:06,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:40:06,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 29 [2023-11-29 02:40:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86538041] [2023-11-29 02:40:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:06,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:40:06,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:40:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2023-11-29 02:40:06,209 INFO L87 Difference]: Start difference. First operand 1215 states and 1644 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-29 02:40:11,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:40:15,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:40:20,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:40:24,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:40:38,150 WARN L539 Checker$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 02:41:02,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:41:11,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:41:15,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:41:19,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:41:23,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:41:38,819 WARN L539 Checker$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 02:41:42,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:41:55,400 WARN L539 Checker$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 02:41:59,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:42:03,232 WARN L539 Checker$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 02:42:10,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:42:13,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:42:17,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:42:21,609 WARN L539 Checker$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 02:42:25,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:42:43,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:42:47,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:42:51,039 WARN L539 Checker$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 02:43:04,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:43:07,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:43:14,388 WARN L293 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 210 DAG size of output: 184 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:43:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:18,642 INFO L93 Difference]: Finished difference Result 2659 states and 3624 transitions. [2023-11-29 02:43:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 02:43:18,643 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226 [2023-11-29 02:43:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:18,651 INFO L225 Difference]: With dead ends: 2659 [2023-11-29 02:43:18,651 INFO L226 Difference]: Without dead ends: 1774 [2023-11-29 02:43:18,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 95.7s TimeCoverageRelationStatistics Valid=857, Invalid=4399, Unknown=0, NotChecked=0, Total=5256 [2023-11-29 02:43:18,656 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 558 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 42 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:18,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1341 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 937 Invalid, 20 Unknown, 0 Unchecked, 105.8s Time] [2023-11-29 02:43:18,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2023-11-29 02:43:18,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1232. [2023-11-29 02:43:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 792 states have (on average 1.2247474747474747) internal successors, (970), 795 states have internal predecessors, (970), 350 states have call successors, (350), 89 states have call predecessors, (350), 89 states have return successors, (350), 347 states have call predecessors, (350), 350 states have call successors, (350) [2023-11-29 02:43:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1670 transitions. [2023-11-29 02:43:18,800 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1670 transitions. Word has length 226 [2023-11-29 02:43:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:18,801 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1670 transitions. [2023-11-29 02:43:18,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-29 02:43:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1670 transitions. [2023-11-29 02:43:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 02:43:18,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:18,803 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:43:18,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 02:43:19,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:43:19,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:19,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1487372741, now seen corresponding path program 1 times [2023-11-29 02:43:19,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:19,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474824248] [2023-11-29 02:43:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:19,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:19,037 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:43:19,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316983743] [2023-11-29 02:43:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:19,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:43:19,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:43:19,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:43:19,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:43:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:19,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 02:43:19,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:43:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1536 proven. 96 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2023-11-29 02:43:19,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:43:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-29 02:43:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474824248] [2023-11-29 02:43:20,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:43:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316983743] [2023-11-29 02:43:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316983743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:43:20,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:43:20,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2023-11-29 02:43:20,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037399291] [2023-11-29 02:43:20,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:43:20,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 02:43:20,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 02:43:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:43:20,679 INFO L87 Difference]: Start difference. First operand 1232 states and 1670 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) [2023-11-29 02:43:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:26,866 INFO L93 Difference]: Finished difference Result 7343 states and 9666 transitions. [2023-11-29 02:43:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-29 02:43:26,867 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) Word has length 226 [2023-11-29 02:43:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:26,895 INFO L225 Difference]: With dead ends: 7343 [2023-11-29 02:43:26,895 INFO L226 Difference]: Without dead ends: 6204 [2023-11-29 02:43:26,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2843 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1851, Invalid=4955, Unknown=0, NotChecked=0, Total=6806 [2023-11-29 02:43:26,902 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 2128 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 1156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2155 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:26,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2155 Valid, 1128 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1156 Valid, 2124 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 02:43:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6204 states. [2023-11-29 02:43:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6204 to 1447. [2023-11-29 02:43:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1023 states have (on average 1.2971652003910068) internal successors, (1327), 1023 states have internal predecessors, (1327), 324 states have call successors, (324), 99 states have call predecessors, (324), 99 states have return successors, (324), 324 states have call predecessors, (324), 324 states have call successors, (324) [2023-11-29 02:43:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 1975 transitions. [2023-11-29 02:43:27,295 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 1975 transitions. Word has length 226 [2023-11-29 02:43:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:27,295 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 1975 transitions. [2023-11-29 02:43:27,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) [2023-11-29 02:43:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 1975 transitions. [2023-11-29 02:43:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 02:43:27,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:27,298 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:43:27,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 02:43:27,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:43:27,498 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:27,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:27,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1998247929, now seen corresponding path program 1 times [2023-11-29 02:43:27,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:27,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893116323] [2023-11-29 02:43:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:27,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:27,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:43:27,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774669642] [2023-11-29 02:43:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:27,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:43:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:43:27,526 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:43:27,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf988059-0575-4072-bb99-fe0c91a1b1e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:43:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:27,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 02:43:27,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:43:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1642 proven. 234 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2023-11-29 02:43:39,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:44:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-11-29 02:44:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:42,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893116323] [2023-11-29 02:44:42,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:42,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774669642] [2023-11-29 02:44:42,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774669642] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:44:42,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:44:42,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [24] total 33 [2023-11-29 02:44:42,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846234365] [2023-11-29 02:44:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:44:42,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:44:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=857, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 02:44:42,932 INFO L87 Difference]: Start difference. First operand 1447 states and 1975 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-29 02:44:53,113 WARN L293 SmtUtils]: Spent 9.41s on a formula simplification. DAG size of input: 151 DAG size of output: 145 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:45:24,577 WARN L293 SmtUtils]: Spent 12.50s on a formula simplification. DAG size of input: 165 DAG size of output: 155 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:45:40,269 WARN L293 SmtUtils]: Spent 14.01s on a formula simplification. DAG size of input: 180 DAG size of output: 164 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:45:59,943 WARN L293 SmtUtils]: Spent 18.43s on a formula simplification. DAG size of input: 205 DAG size of output: 193 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:46:22,716 WARN L293 SmtUtils]: Spent 16.19s on a formula simplification. DAG size of input: 203 DAG size of output: 185 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:46:33,962 WARN L293 SmtUtils]: Spent 9.28s on a formula simplification. DAG size of input: 187 DAG size of output: 174 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:46:46,186 WARN L293 SmtUtils]: Spent 11.38s on a formula simplification. DAG size of input: 198 DAG size of output: 184 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:46:59,698 WARN L293 SmtUtils]: Spent 12.93s on a formula simplification. DAG size of input: 202 DAG size of output: 186 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:47:12,005 WARN L293 SmtUtils]: Spent 11.41s on a formula simplification. DAG size of input: 200 DAG size of output: 187 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:47:13,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 02:47:24,590 WARN L293 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 182 DAG size of output: 179 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:47:37,387 WARN L293 SmtUtils]: Spent 11.24s on a formula simplification. DAG size of input: 181 DAG size of output: 172 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:47:54,844 WARN L293 SmtUtils]: Spent 9.52s on a formula simplification. DAG size of input: 183 DAG size of output: 180 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:48:26,101 WARN L293 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 152 DAG size of output: 146 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:48:44,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]