./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.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_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/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_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/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_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/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 f85bc794ddaf472a7e3079e39d319628ff71704bc56bc279abbe4af1f903e58e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:15:30,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:15:30,250 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:15:30,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:15:30,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:15:30,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:15:30,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:15:30,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:15:30,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:15:30,279 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:15:30,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:15:30,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:15:30,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:15:30,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:15:30,282 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:15:30,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:15:30,283 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:15:30,284 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:15:30,284 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:15:30,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:15:30,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:15:30,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:15:30,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:15:30,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:15:30,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:15:30,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:15:30,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:15:30,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:15:30,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:15:30,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:15:30,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:15:30,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:15:30,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:15:30,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:15:30,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:15:30,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:15:30,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:15:30,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:15:30,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:15:30,293 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:15:30,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:15:30,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:15:30,293 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_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85bc794ddaf472a7e3079e39d319628ff71704bc56bc279abbe4af1f903e58e [2023-11-29 06:15:30,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:15:30,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:15:30,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:15:30,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:15:30,517 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:15:30,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i [2023-11-29 06:15:33,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:15:33,515 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:15:33,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i [2023-11-29 06:15:33,529 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/data/a13b54c8f/e08062deb08448b880cdfabb705d24fd/FLAGb0c0b8d5a [2023-11-29 06:15:33,542 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/data/a13b54c8f/e08062deb08448b880cdfabb705d24fd [2023-11-29 06:15:33,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:15:33,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:15:33,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:15:33,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:15:33,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:15:33,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:33,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d82966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33, skipping insertion in model container [2023-11-29 06:15:33,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:33,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:15:33,736 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_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i[916,929] [2023-11-29 06:15:33,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:15:33,891 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:15:33,904 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_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i[916,929] [2023-11-29 06:15:33,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:15:33,988 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:15:33,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33 WrapperNode [2023-11-29 06:15:33,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:15:33,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:15:33,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:15:33,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:15:33,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,115 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 513 [2023-11-29 06:15:34,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:15:34,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:15:34,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:15:34,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:15:34,126 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,164 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 06:15:34,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:15:34,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:15:34,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:15:34,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:15:34,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (1/1) ... [2023-11-29 06:15:34,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:15:34,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:34,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:15:34,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:15:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:15:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:15:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:15:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:15:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:15:34,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:15:34,400 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:15:34,403 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:15:35,115 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:15:35,151 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:15:35,151 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:15:35,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:35 BoogieIcfgContainer [2023-11-29 06:15:35,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:15:35,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:15:35,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:15:35,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:15:35,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:15:33" (1/3) ... [2023-11-29 06:15:35,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b827b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:15:35, skipping insertion in model container [2023-11-29 06:15:35,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:33" (2/3) ... [2023-11-29 06:15:35,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b827b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:15:35, skipping insertion in model container [2023-11-29 06:15:35,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:35" (3/3) ... [2023-11-29 06:15:35,160 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-82.i [2023-11-29 06:15:35,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:15:35,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:15:35,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:15:35,237 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;@12c5f3df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:15:35,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:15:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 134 states have (on average 1.5970149253731343) internal successors, (214), 135 states have internal predecessors, (214), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-29 06:15:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2023-11-29 06:15:35,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:35,269 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:35,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:35,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash -775773139, now seen corresponding path program 1 times [2023-11-29 06:15:35,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:35,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002926814] [2023-11-29 06:15:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:35,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:35,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002926814] [2023-11-29 06:15:35,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:15:35,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200880554] [2023-11-29 06:15:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:35,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:35,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:35,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:35,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:15:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:35,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:15:35,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2023-11-29 06:15:36,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:15:36,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200880554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:36,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:36,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:15:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815938516] [2023-11-29 06:15:36,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:15:36,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:36,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:15:36,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:15:36,098 INFO L87 Difference]: Start difference. First operand has 187 states, 134 states have (on average 1.5970149253731343) internal successors, (214), 135 states have internal predecessors, (214), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-29 06:15:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:36,157 INFO L93 Difference]: Finished difference Result 371 states and 676 transitions. [2023-11-29 06:15:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:15:36,160 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 330 [2023-11-29 06:15:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:36,170 INFO L225 Difference]: With dead ends: 371 [2023-11-29 06:15:36,171 INFO L226 Difference]: Without dead ends: 185 [2023-11-29 06:15:36,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 329 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 06:15:36,180 INFO L413 NwaCegarLoop]: 305 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, 305 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 06:15:36,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:15:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-29 06:15:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-11-29 06:15:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 133 states have (on average 1.5639097744360901) internal successors, (208), 133 states have internal predecessors, (208), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-29 06:15:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 308 transitions. [2023-11-29 06:15:36,245 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 308 transitions. Word has length 330 [2023-11-29 06:15:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:36,246 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 308 transitions. [2023-11-29 06:15:36,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-29 06:15:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 308 transitions. [2023-11-29 06:15:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2023-11-29 06:15:36,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:36,256 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:36,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:15:36,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:15:36,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:36,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2115249111, now seen corresponding path program 1 times [2023-11-29 06:15:36,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:36,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251276438] [2023-11-29 06:15:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:36,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:36,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:15:36,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661739715] [2023-11-29 06:15:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:36,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:36,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:36,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:36,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:15:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:36,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:15:36,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:15:37,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:15:37,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:37,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251276438] [2023-11-29 06:15:37,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:15:37,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661739715] [2023-11-29 06:15:37,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661739715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:37,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:37,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:37,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318011509] [2023-11-29 06:15:37,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:37,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:15:37,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:37,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:15:37,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:15:37,355 INFO L87 Difference]: Start difference. First operand 185 states and 308 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:15:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:37,711 INFO L93 Difference]: Finished difference Result 614 states and 1025 transitions. [2023-11-29 06:15:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:15:37,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 330 [2023-11-29 06:15:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:37,720 INFO L225 Difference]: With dead ends: 614 [2023-11-29 06:15:37,720 INFO L226 Difference]: Without dead ends: 430 [2023-11-29 06:15:37,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:15:37,723 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 369 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:37,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 957 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:15:37,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-29 06:15:37,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 399. [2023-11-29 06:15:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 296 states have (on average 1.5810810810810811) internal successors, (468), 296 states have internal predecessors, (468), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-29 06:15:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 668 transitions. [2023-11-29 06:15:37,813 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 668 transitions. Word has length 330 [2023-11-29 06:15:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:37,815 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 668 transitions. [2023-11-29 06:15:37,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:15:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 668 transitions. [2023-11-29 06:15:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:15:37,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:37,824 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:37,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:15:38,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:38,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:38,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:38,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1730906361, now seen corresponding path program 1 times [2023-11-29 06:15:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:38,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568437450] [2023-11-29 06:15:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:38,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:38,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:15:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604816411] [2023-11-29 06:15:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:38,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:38,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:38,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:15:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:38,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:15:38,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:15:40,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:15:40,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:40,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568437450] [2023-11-29 06:15:40,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:15:40,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604816411] [2023-11-29 06:15:40,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604816411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:40,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:40,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:15:40,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307102567] [2023-11-29 06:15:40,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:40,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:15:40,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:15:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:15:40,293 INFO L87 Difference]: Start difference. First operand 399 states and 668 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:15:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:40,880 INFO L93 Difference]: Finished difference Result 1383 states and 2328 transitions. [2023-11-29 06:15:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:15:40,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 331 [2023-11-29 06:15:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:40,892 INFO L225 Difference]: With dead ends: 1383 [2023-11-29 06:15:40,892 INFO L226 Difference]: Without dead ends: 985 [2023-11-29 06:15:40,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:15:40,896 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 442 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:40,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1478 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:15:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2023-11-29 06:15:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 926. [2023-11-29 06:15:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 721 states have (on average 1.59500693481276) internal successors, (1150), 721 states have internal predecessors, (1150), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2023-11-29 06:15:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1550 transitions. [2023-11-29 06:15:40,994 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1550 transitions. Word has length 331 [2023-11-29 06:15:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:40,996 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1550 transitions. [2023-11-29 06:15:40,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:15:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1550 transitions. [2023-11-29 06:15:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:15:41,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:41,005 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:41,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:15:41,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:41,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:41,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2061735943, now seen corresponding path program 1 times [2023-11-29 06:15:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288235220] [2023-11-29 06:15:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:41,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:15:41,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133400662] [2023-11-29 06:15:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:41,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:41,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:41,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:41,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:15:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:41,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:15:41,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:15:42,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:15:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:42,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288235220] [2023-11-29 06:15:42,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:15:42,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133400662] [2023-11-29 06:15:42,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133400662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:42,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:42,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:15:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36821331] [2023-11-29 06:15:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:42,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:15:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:15:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:15:42,675 INFO L87 Difference]: Start difference. First operand 926 states and 1550 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:15:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:45,352 INFO L93 Difference]: Finished difference Result 6162 states and 10331 transitions. [2023-11-29 06:15:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 06:15:45,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 331 [2023-11-29 06:15:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:45,390 INFO L225 Difference]: With dead ends: 6162 [2023-11-29 06:15:45,390 INFO L226 Difference]: Without dead ends: 5237 [2023-11-29 06:15:45,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:15:45,396 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 2816 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 4247 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:45,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2816 Valid, 4247 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 06:15:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2023-11-29 06:15:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 2861. [2023-11-29 06:15:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2332 states have (on average 1.620926243567753) internal successors, (3780), 2336 states have internal predecessors, (3780), 512 states have call successors, (512), 16 states have call predecessors, (512), 16 states have return successors, (512), 508 states have call predecessors, (512), 512 states have call successors, (512) [2023-11-29 06:15:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4804 transitions. [2023-11-29 06:15:45,696 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4804 transitions. Word has length 331 [2023-11-29 06:15:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:45,697 INFO L495 AbstractCegarLoop]: Abstraction has 2861 states and 4804 transitions. [2023-11-29 06:15:45,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:15:45,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4804 transitions. [2023-11-29 06:15:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:15:45,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:45,704 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:45,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:15:45,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:45,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:45,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash 781872265, now seen corresponding path program 1 times [2023-11-29 06:15:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110711166] [2023-11-29 06:15:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:45,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:45,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:15:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619159630] [2023-11-29 06:15:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:45,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:45,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:45,984 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:46,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:15:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:46,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:15:46,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2259 proven. 96 refuted. 0 times theorem prover too weak. 2545 trivial. 0 not checked. [2023-11-29 06:15:47,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:15:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:15:47,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110711166] [2023-11-29 06:15:47,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:15:47,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619159630] [2023-11-29 06:15:47,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619159630] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:15:47,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:15:47,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2023-11-29 06:15:47,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695503702] [2023-11-29 06:15:47,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:47,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:15:47,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:15:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:15:47,919 INFO L87 Difference]: Start difference. First operand 2861 states and 4804 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-29 06:15:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:50,671 INFO L93 Difference]: Finished difference Result 24415 states and 41502 transitions. [2023-11-29 06:15:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:15:50,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 331 [2023-11-29 06:15:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:50,809 INFO L225 Difference]: With dead ends: 24415 [2023-11-29 06:15:50,809 INFO L226 Difference]: Without dead ends: 21555 [2023-11-29 06:15:50,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:15:50,823 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 2183 mSDsluCounter, 2983 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:50,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 3392 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 06:15:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21555 states. [2023-11-29 06:15:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21555 to 10149. [2023-11-29 06:15:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10149 states, 8684 states have (on average 1.6439428834638417) internal successors, (14276), 8716 states have internal predecessors, (14276), 1408 states have call successors, (1408), 56 states have call predecessors, (1408), 56 states have return successors, (1408), 1376 states have call predecessors, (1408), 1408 states have call successors, (1408) [2023-11-29 06:15:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10149 states to 10149 states and 17092 transitions. [2023-11-29 06:15:51,847 INFO L78 Accepts]: Start accepts. Automaton has 10149 states and 17092 transitions. Word has length 331 [2023-11-29 06:15:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:51,848 INFO L495 AbstractCegarLoop]: Abstraction has 10149 states and 17092 transitions. [2023-11-29 06:15:51,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-29 06:15:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 10149 states and 17092 transitions. [2023-11-29 06:15:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:15:51,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:51,857 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:51,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 06:15:52,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:52,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:52,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:52,059 INFO L85 PathProgramCache]: Analyzing trace with hash -115521013, now seen corresponding path program 1 times [2023-11-29 06:15:52,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:52,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932284626] [2023-11-29 06:15:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:52,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:15:52,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471198062] [2023-11-29 06:15:52,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:52,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:52,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:52,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:52,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:15:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:52,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:15:52,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:15:52,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:15:52,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:52,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932284626] [2023-11-29 06:15:52,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:15:52,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471198062] [2023-11-29 06:15:52,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471198062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:52,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:52,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:15:52,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862717176] [2023-11-29 06:15:52,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:52,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:15:52,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:52,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:15:52,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:15:52,817 INFO L87 Difference]: Start difference. First operand 10149 states and 17092 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:15:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:55,318 INFO L93 Difference]: Finished difference Result 47434 states and 80394 transitions. [2023-11-29 06:15:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 06:15:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 331 [2023-11-29 06:15:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:55,393 INFO L225 Difference]: With dead ends: 47434 [2023-11-29 06:15:55,393 INFO L226 Difference]: Without dead ends: 37286 [2023-11-29 06:15:55,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:15:55,418 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 2998 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:55,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2998 Valid, 3432 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:15:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37286 states. [2023-11-29 06:15:56,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37286 to 21601. [2023-11-29 06:15:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21601 states, 18592 states have (on average 1.6437177280550774) internal successors, (30560), 18672 states have internal predecessors, (30560), 2832 states have call successors, (2832), 176 states have call predecessors, (2832), 176 states have return successors, (2832), 2752 states have call predecessors, (2832), 2832 states have call successors, (2832) [2023-11-29 06:15:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21601 states to 21601 states and 36224 transitions. [2023-11-29 06:15:56,930 INFO L78 Accepts]: Start accepts. Automaton has 21601 states and 36224 transitions. Word has length 331 [2023-11-29 06:15:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:56,931 INFO L495 AbstractCegarLoop]: Abstraction has 21601 states and 36224 transitions. [2023-11-29 06:15:56,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:15:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 21601 states and 36224 transitions. [2023-11-29 06:15:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:15:56,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:56,946 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:56,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:15:57,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 06:15:57,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:57,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:57,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1144880311, now seen corresponding path program 1 times [2023-11-29 06:15:57,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:57,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403496788] [2023-11-29 06:15:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:57,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:15:57,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479624457] [2023-11-29 06:15:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:57,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:57,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:57,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:57,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:15:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:57,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:15:57,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2499 proven. 72 refuted. 0 times theorem prover too weak. 2329 trivial. 0 not checked. [2023-11-29 06:15:57,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:15:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 75 proven. 72 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-11-29 06:15:57,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:57,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403496788] [2023-11-29 06:15:57,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:15:57,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479624457] [2023-11-29 06:15:57,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479624457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:15:57,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:15:57,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 06:15:57,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977558356] [2023-11-29 06:15:57,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:15:57,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:15:57,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:57,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:15:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:15:57,964 INFO L87 Difference]: Start difference. First operand 21601 states and 36224 transitions. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2023-11-29 06:16:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:02,267 INFO L93 Difference]: Finished difference Result 83195 states and 139951 transitions. [2023-11-29 06:16:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 06:16:02,268 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 331 [2023-11-29 06:16:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:02,458 INFO L225 Difference]: With dead ends: 83195 [2023-11-29 06:16:02,458 INFO L226 Difference]: Without dead ends: 61595 [2023-11-29 06:16:02,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=711, Invalid=1941, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 06:16:02,507 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 2235 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:02,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2284 Valid, 2738 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 06:16:02,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61595 states. [2023-11-29 06:16:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61595 to 46693. [2023-11-29 06:16:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46693 states, 42116 states have (on average 1.6870785449710324) internal successors, (71053), 42244 states have internal predecessors, (71053), 4256 states have call successors, (4256), 320 states have call predecessors, (4256), 320 states have return successors, (4256), 4128 states have call predecessors, (4256), 4256 states have call successors, (4256) [2023-11-29 06:16:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46693 states to 46693 states and 79565 transitions. [2023-11-29 06:16:05,060 INFO L78 Accepts]: Start accepts. Automaton has 46693 states and 79565 transitions. Word has length 331 [2023-11-29 06:16:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:05,061 INFO L495 AbstractCegarLoop]: Abstraction has 46693 states and 79565 transitions. [2023-11-29 06:16:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2023-11-29 06:16:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 46693 states and 79565 transitions. [2023-11-29 06:16:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:16:05,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:05,079 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:05,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:16:05,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:16:05,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:05,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1267515577, now seen corresponding path program 1 times [2023-11-29 06:16:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:05,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845465728] [2023-11-29 06:16:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:05,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:05,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210389309] [2023-11-29 06:16:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:05,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:05,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:05,337 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:05,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:16:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:05,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:16:05,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2259 proven. 96 refuted. 0 times theorem prover too weak. 2545 trivial. 0 not checked. [2023-11-29 06:16:06,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:16:06,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:06,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845465728] [2023-11-29 06:16:06,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:06,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210389309] [2023-11-29 06:16:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210389309] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:06,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:16:06,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-29 06:16:06,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120751300] [2023-11-29 06:16:06,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:06,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:16:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:16:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:16:06,339 INFO L87 Difference]: Start difference. First operand 46693 states and 79565 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:16:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:10,338 INFO L93 Difference]: Finished difference Result 181465 states and 309288 transitions. [2023-11-29 06:16:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:16:10,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 331 [2023-11-29 06:16:10,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:10,614 INFO L225 Difference]: With dead ends: 181465 [2023-11-29 06:16:10,614 INFO L226 Difference]: Without dead ends: 134773 [2023-11-29 06:16:10,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:16:10,677 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1355 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:10,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 1300 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:16:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134773 states. [2023-11-29 06:16:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134773 to 80347. [2023-11-29 06:16:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80347 states, 75344 states have (on average 1.7087890210235719) internal successors, (128747), 75496 states have internal predecessors, (128747), 4656 states have call successors, (4656), 346 states have call predecessors, (4656), 346 states have return successors, (4656), 4504 states have call predecessors, (4656), 4656 states have call successors, (4656) [2023-11-29 06:16:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80347 states to 80347 states and 138059 transitions. [2023-11-29 06:16:14,499 INFO L78 Accepts]: Start accepts. Automaton has 80347 states and 138059 transitions. Word has length 331 [2023-11-29 06:16:14,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:14,500 INFO L495 AbstractCegarLoop]: Abstraction has 80347 states and 138059 transitions. [2023-11-29 06:16:14,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:16:14,500 INFO L276 IsEmpty]: Start isEmpty. Operand 80347 states and 138059 transitions. [2023-11-29 06:16:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:16:14,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:14,525 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:14,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 06:16:14,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 06:16:14,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:14,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1542275191, now seen corresponding path program 1 times [2023-11-29 06:16:14,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:14,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624461786] [2023-11-29 06:16:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:14,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:14,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:14,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176130528] [2023-11-29 06:16:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:14,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:14,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:14,778 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:14,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:16:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:15,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:16:15,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2497 proven. 75 refuted. 0 times theorem prover too weak. 2328 trivial. 0 not checked. [2023-11-29 06:16:15,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 72 proven. 75 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-11-29 06:16:15,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624461786] [2023-11-29 06:16:15,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176130528] [2023-11-29 06:16:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176130528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:16:15,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:16:15,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-29 06:16:15,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627789659] [2023-11-29 06:16:15,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:16:15,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:16:15,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:15,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:16:15,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:16:15,478 INFO L87 Difference]: Start difference. First operand 80347 states and 138059 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 06:16:20,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:20,630 INFO L93 Difference]: Finished difference Result 224851 states and 385452 transitions. [2023-11-29 06:16:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:16:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 331 [2023-11-29 06:16:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:20,934 INFO L225 Difference]: With dead ends: 224851 [2023-11-29 06:16:20,934 INFO L226 Difference]: Without dead ends: 144457 [2023-11-29 06:16:21,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:16:21,031 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 745 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:21,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 2816 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:16:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144457 states. [2023-11-29 06:16:24,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144457 to 105903. [2023-11-29 06:16:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105903 states, 100828 states have (on average 1.705567897806165) internal successors, (171969), 100980 states have internal predecessors, (171969), 4656 states have call successors, (4656), 418 states have call predecessors, (4656), 418 states have return successors, (4656), 4504 states have call predecessors, (4656), 4656 states have call successors, (4656) [2023-11-29 06:16:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105903 states to 105903 states and 181281 transitions. [2023-11-29 06:16:25,087 INFO L78 Accepts]: Start accepts. Automaton has 105903 states and 181281 transitions. Word has length 331 [2023-11-29 06:16:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:25,088 INFO L495 AbstractCegarLoop]: Abstraction has 105903 states and 181281 transitions. [2023-11-29 06:16:25,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 06:16:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 105903 states and 181281 transitions. [2023-11-29 06:16:25,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:16:25,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:25,112 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:25,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 06:16:25,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:25,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:25,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1855298827, now seen corresponding path program 1 times [2023-11-29 06:16:25,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:25,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900476877] [2023-11-29 06:16:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:25,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:25,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:25,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257154360] [2023-11-29 06:16:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:25,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:25,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:25,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:25,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:16:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:25,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 06:16:25,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3230 proven. 594 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-11-29 06:16:30,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900476877] [2023-11-29 06:16:34,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257154360] [2023-11-29 06:16:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257154360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:34,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:16:34,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-11-29 06:16:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836476363] [2023-11-29 06:16:34,249 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:16:34,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 06:16:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 06:16:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1046, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 06:16:34,251 INFO L87 Difference]: Start difference. First operand 105903 states and 181281 transitions. Second operand has 30 states, 30 states have (on average 3.9) internal successors, (117), 27 states have internal predecessors, (117), 8 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (50), 8 states have call predecessors, (50), 8 states have call successors, (50) [2023-11-29 06:16:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:47,887 INFO L93 Difference]: Finished difference Result 251854 states and 427588 transitions. [2023-11-29 06:16:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 06:16:47,887 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.9) internal successors, (117), 27 states have internal predecessors, (117), 8 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (50), 8 states have call predecessors, (50), 8 states have call successors, (50) Word has length 331 [2023-11-29 06:16:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:48,166 INFO L225 Difference]: With dead ends: 251854 [2023-11-29 06:16:48,166 INFO L226 Difference]: Without dead ends: 176258 [2023-11-29 06:16:48,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1157, Invalid=4543, Unknown=0, NotChecked=0, Total=5700 [2023-11-29 06:16:48,238 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1825 mSDsluCounter, 8128 mSDsCounter, 0 mSdLazyCounter, 4312 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 8849 SdHoareTripleChecker+Invalid, 4483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:48,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1825 Valid, 8849 Invalid, 4483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4312 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 06:16:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176258 states. [2023-11-29 06:16:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176258 to 143761. [2023-11-29 06:16:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143761 states, 136232 states have (on average 1.687833989077456) internal successors, (229937), 136452 states have internal predecessors, (229937), 6898 states have call successors, (6898), 630 states have call predecessors, (6898), 630 states have return successors, (6898), 6678 states have call predecessors, (6898), 6898 states have call successors, (6898) [2023-11-29 06:16:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143761 states to 143761 states and 243733 transitions. [2023-11-29 06:16:53,277 INFO L78 Accepts]: Start accepts. Automaton has 143761 states and 243733 transitions. Word has length 331 [2023-11-29 06:16:53,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:53,278 INFO L495 AbstractCegarLoop]: Abstraction has 143761 states and 243733 transitions. [2023-11-29 06:16:53,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.9) internal successors, (117), 27 states have internal predecessors, (117), 8 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (50), 8 states have call predecessors, (50), 8 states have call successors, (50) [2023-11-29 06:16:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand 143761 states and 243733 transitions. [2023-11-29 06:16:53,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 06:16:53,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:53,310 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:53,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:16:53,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:53,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:53,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 483491529, now seen corresponding path program 1 times [2023-11-29 06:16:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:53,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451528492] [2023-11-29 06:16:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:53,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:53,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365919489] [2023-11-29 06:16:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:53,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:53,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:53,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:53,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:16:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:53,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 06:16:53,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:16:54,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:54,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451528492] [2023-11-29 06:16:54,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365919489] [2023-11-29 06:16:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365919489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:54,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:54,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639267819] [2023-11-29 06:16:54,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:54,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:16:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:16:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:16:54,593 INFO L87 Difference]: Start difference. First operand 143761 states and 243733 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:16:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:58,844 INFO L93 Difference]: Finished difference Result 284131 states and 481760 transitions. [2023-11-29 06:16:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:16:58,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 331 [2023-11-29 06:16:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:59,036 INFO L225 Difference]: With dead ends: 284131 [2023-11-29 06:16:59,036 INFO L226 Difference]: Without dead ends: 142633 [2023-11-29 06:16:59,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:16:59,125 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 492 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:59,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1518 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:16:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142633 states. [2023-11-29 06:17:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142633 to 137318. [2023-11-29 06:17:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137318 states, 130275 states have (on average 1.6914219919401265) internal successors, (220350), 130483 states have internal predecessors, (220350), 6446 states have call successors, (6446), 596 states have call predecessors, (6446), 596 states have return successors, (6446), 6238 states have call predecessors, (6446), 6446 states have call successors, (6446) [2023-11-29 06:17:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137318 states to 137318 states and 233242 transitions. [2023-11-29 06:17:03,541 INFO L78 Accepts]: Start accepts. Automaton has 137318 states and 233242 transitions. Word has length 331 [2023-11-29 06:17:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:17:03,542 INFO L495 AbstractCegarLoop]: Abstraction has 137318 states and 233242 transitions. [2023-11-29 06:17:03,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:17:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 137318 states and 233242 transitions. [2023-11-29 06:17:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-11-29 06:17:03,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:17:03,556 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:03,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:17:03,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:03,757 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:17:03,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:17:03,757 INFO L85 PathProgramCache]: Analyzing trace with hash -971178036, now seen corresponding path program 1 times [2023-11-29 06:17:03,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:17:03,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32250846] [2023-11-29 06:17:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:03,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:17:03,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:17:03,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298415231] [2023-11-29 06:17:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:03,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:03,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:17:03,812 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:17:03,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:17:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:17:04,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:17:04,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:17:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:17:04,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:17:04,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:17:04,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32250846] [2023-11-29 06:17:04,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:17:04,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298415231] [2023-11-29 06:17:04,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298415231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:17:04,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:17:04,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:17:04,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508222815] [2023-11-29 06:17:04,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:17:04,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:17:04,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:17:04,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:17:04,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:17:04,564 INFO L87 Difference]: Start difference. First operand 137318 states and 233242 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:17:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:17:08,420 INFO L93 Difference]: Finished difference Result 249181 states and 423726 transitions. [2023-11-29 06:17:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:17:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 332 [2023-11-29 06:17:08,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:17:08,649 INFO L225 Difference]: With dead ends: 249181 [2023-11-29 06:17:08,649 INFO L226 Difference]: Without dead ends: 143279 [2023-11-29 06:17:08,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:17:08,710 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 540 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:17:08,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1701 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:17:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143279 states. [2023-11-29 06:17:13,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143279 to 138993. [2023-11-29 06:17:13,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138993 states, 131726 states have (on average 1.6907823816103122) internal successors, (222720), 131938 states have internal predecessors, (222720), 6646 states have call successors, (6646), 620 states have call predecessors, (6646), 620 states have return successors, (6646), 6434 states have call predecessors, (6646), 6646 states have call successors, (6646) [2023-11-29 06:17:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138993 states to 138993 states and 236012 transitions. [2023-11-29 06:17:14,052 INFO L78 Accepts]: Start accepts. Automaton has 138993 states and 236012 transitions. Word has length 332 [2023-11-29 06:17:14,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:17:14,052 INFO L495 AbstractCegarLoop]: Abstraction has 138993 states and 236012 transitions. [2023-11-29 06:17:14,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:17:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 138993 states and 236012 transitions. [2023-11-29 06:17:14,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-11-29 06:17:14,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:17:14,062 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:14,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:17:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:14,263 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:17:14,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:17:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash -875625692, now seen corresponding path program 1 times [2023-11-29 06:17:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:17:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052152125] [2023-11-29 06:17:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:17:14,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:17:14,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446137931] [2023-11-29 06:17:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:14,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:14,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:17:14,315 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:17:14,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:17:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:17:14,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 06:17:14,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:17:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:17:15,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:17:15,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:17:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052152125] [2023-11-29 06:17:15,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:17:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446137931] [2023-11-29 06:17:15,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446137931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:17:15,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:17:15,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:17:15,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555872374] [2023-11-29 06:17:15,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:17:15,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:17:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:17:15,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:17:15,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:17:15,648 INFO L87 Difference]: Start difference. First operand 138993 states and 236012 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:17:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:17:20,194 INFO L93 Difference]: Finished difference Result 246541 states and 419438 transitions. [2023-11-29 06:17:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:17:20,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 332 [2023-11-29 06:17:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:17:20,395 INFO L225 Difference]: With dead ends: 246541 [2023-11-29 06:17:20,395 INFO L226 Difference]: Without dead ends: 141157 [2023-11-29 06:17:20,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:17:20,447 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1307 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:17:20,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 2368 Invalid, 1338 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [308 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:17:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141157 states. [2023-11-29 06:17:24,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141157 to 138582. [2023-11-29 06:17:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138582 states, 131367 states have (on average 1.6912085988109646) internal successors, (222169), 131577 states have internal predecessors, (222169), 6598 states have call successors, (6598), 616 states have call predecessors, (6598), 616 states have return successors, (6598), 6388 states have call predecessors, (6598), 6598 states have call successors, (6598) [2023-11-29 06:17:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138582 states to 138582 states and 235365 transitions. [2023-11-29 06:17:25,252 INFO L78 Accepts]: Start accepts. Automaton has 138582 states and 235365 transitions. Word has length 332 [2023-11-29 06:17:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:17:25,252 INFO L495 AbstractCegarLoop]: Abstraction has 138582 states and 235365 transitions. [2023-11-29 06:17:25,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:17:25,252 INFO L276 IsEmpty]: Start isEmpty. Operand 138582 states and 235365 transitions. [2023-11-29 06:17:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-11-29 06:17:25,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:17:25,258 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:25,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:17:25,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:25,459 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:17:25,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:17:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash -852993438, now seen corresponding path program 1 times [2023-11-29 06:17:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:17:25,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027575157] [2023-11-29 06:17:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:25,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:17:25,499 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:17:25,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079030247] [2023-11-29 06:17:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:25,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:25,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:17:25,500 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:17:25,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:17:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:17:25,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:17:25,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:17:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2497 proven. 75 refuted. 0 times theorem prover too weak. 2328 trivial. 0 not checked. [2023-11-29 06:17:25,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:17:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 72 proven. 75 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-11-29 06:17:26,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:17:26,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027575157] [2023-11-29 06:17:26,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:17:26,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079030247] [2023-11-29 06:17:26,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079030247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:17:26,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:17:26,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-29 06:17:26,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059177773] [2023-11-29 06:17:26,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:17:26,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:17:26,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:17:26,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:17:26,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:17:26,181 INFO L87 Difference]: Start difference. First operand 138582 states and 235365 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 06:17:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:17:34,302 INFO L93 Difference]: Finished difference Result 359313 states and 604683 transitions. [2023-11-29 06:17:34,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 06:17:34,303 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 332 [2023-11-29 06:17:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:17:34,788 INFO L225 Difference]: With dead ends: 359313 [2023-11-29 06:17:34,788 INFO L226 Difference]: Without dead ends: 224775 [2023-11-29 06:17:34,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 652 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:17:34,857 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 2266 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:17:34,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2364 Valid, 1542 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:17:34,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224775 states. [2023-11-29 06:17:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224775 to 100433. [2023-11-29 06:17:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100433 states, 92734 states have (on average 1.6614510319839542) internal successors, (154073), 92968 states have internal predecessors, (154073), 7062 states have call successors, (7062), 636 states have call predecessors, (7062), 636 states have return successors, (7062), 6828 states have call predecessors, (7062), 7062 states have call successors, (7062) [2023-11-29 06:17:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100433 states to 100433 states and 168197 transitions. [2023-11-29 06:17:40,771 INFO L78 Accepts]: Start accepts. Automaton has 100433 states and 168197 transitions. Word has length 332 [2023-11-29 06:17:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:17:40,772 INFO L495 AbstractCegarLoop]: Abstraction has 100433 states and 168197 transitions. [2023-11-29 06:17:40,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 06:17:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 100433 states and 168197 transitions. [2023-11-29 06:17:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-11-29 06:17:40,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:17:40,778 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:40,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:17:40,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:40,978 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:17:40,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:17:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash -877443008, now seen corresponding path program 1 times [2023-11-29 06:17:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:17:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496937359] [2023-11-29 06:17:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:17:41,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:17:41,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112644123] [2023-11-29 06:17:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:41,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:41,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:17:41,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:17:41,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:17:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:17:41,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:17:41,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:17:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-29 06:17:41,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:17:41,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:17:41,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496937359] [2023-11-29 06:17:41,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:17:41,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112644123] [2023-11-29 06:17:41,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112644123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:17:41,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:17:41,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:17:41,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431400443] [2023-11-29 06:17:41,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:17:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:17:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:17:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:17:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:17:41,325 INFO L87 Difference]: Start difference. First operand 100433 states and 168197 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:17:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:17:48,013 INFO L93 Difference]: Finished difference Result 253570 states and 426021 transitions. [2023-11-29 06:17:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:17:48,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 332 [2023-11-29 06:17:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:17:48,246 INFO L225 Difference]: With dead ends: 253570 [2023-11-29 06:17:48,247 INFO L226 Difference]: Without dead ends: 156863 [2023-11-29 06:17:48,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:17:48,307 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 364 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:17:48,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 2625 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:17:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156863 states. [2023-11-29 06:17:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156863 to 97731. [2023-11-29 06:17:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97731 states, 90410 states have (on average 1.6588762305054752) internal successors, (149979), 90620 states have internal predecessors, (149979), 6702 states have call successors, (6702), 618 states have call predecessors, (6702), 618 states have return successors, (6702), 6492 states have call predecessors, (6702), 6702 states have call successors, (6702) [2023-11-29 06:17:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97731 states to 97731 states and 163383 transitions. [2023-11-29 06:17:53,399 INFO L78 Accepts]: Start accepts. Automaton has 97731 states and 163383 transitions. Word has length 332 [2023-11-29 06:17:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:17:53,399 INFO L495 AbstractCegarLoop]: Abstraction has 97731 states and 163383 transitions. [2023-11-29 06:17:53,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-29 06:17:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 97731 states and 163383 transitions. [2023-11-29 06:17:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-11-29 06:17:53,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:17:53,404 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:53,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:17:53,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:53,605 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:17:53,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:17:53,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1452403124, now seen corresponding path program 1 times [2023-11-29 06:17:53,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:17:53,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828762877] [2023-11-29 06:17:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:53,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:17:53,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:17:53,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265938767] [2023-11-29 06:17:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:53,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:17:53,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:17:53,646 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:17:53,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:17:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:17:53,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 06:17:53,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:17:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2383 proven. 486 refuted. 0 times theorem prover too weak. 2031 trivial. 0 not checked. [2023-11-29 06:17:56,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:17:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:17:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828762877] [2023-11-29 06:17:58,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:17:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265938767] [2023-11-29 06:17:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265938767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:17:58,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:17:58,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-29 06:17:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405976556] [2023-11-29 06:17:58,592 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:17:58,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:17:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:17:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:17:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:17:58,594 INFO L87 Difference]: Start difference. First operand 97731 states and 163383 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 18 states have internal predecessors, (106), 6 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (50), 6 states have call predecessors, (50), 6 states have call successors, (50) [2023-11-29 06:18:04,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:18:04,531 INFO L93 Difference]: Finished difference Result 178668 states and 298980 transitions. [2023-11-29 06:18:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 06:18:04,531 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 18 states have internal predecessors, (106), 6 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (50), 6 states have call predecessors, (50), 6 states have call successors, (50) Word has length 332 [2023-11-29 06:18:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:18:04,679 INFO L225 Difference]: With dead ends: 178668 [2023-11-29 06:18:04,679 INFO L226 Difference]: Without dead ends: 104020 [2023-11-29 06:18:04,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=818, Invalid=2488, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 06:18:04,719 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1193 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:18:04,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 2833 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:18:04,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104020 states. [2023-11-29 06:18:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104020 to 99423. [2023-11-29 06:18:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99423 states, 92252 states have (on average 1.6590426223821706) internal successors, (153050), 92456 states have internal predecessors, (153050), 6558 states have call successors, (6558), 612 states have call predecessors, (6558), 612 states have return successors, (6558), 6354 states have call predecessors, (6558), 6558 states have call successors, (6558) [2023-11-29 06:18:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99423 states to 99423 states and 166166 transitions. [2023-11-29 06:18:09,436 INFO L78 Accepts]: Start accepts. Automaton has 99423 states and 166166 transitions. Word has length 332 [2023-11-29 06:18:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:18:09,436 INFO L495 AbstractCegarLoop]: Abstraction has 99423 states and 166166 transitions. [2023-11-29 06:18:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 18 states have internal predecessors, (106), 6 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (50), 6 states have call predecessors, (50), 6 states have call successors, (50) [2023-11-29 06:18:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 99423 states and 166166 transitions. [2023-11-29 06:18:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-11-29 06:18:09,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:18:09,443 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:09,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 06:18:09,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:18:09,643 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:18:09,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:18:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1392586016, now seen corresponding path program 1 times [2023-11-29 06:18:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:18:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255627814] [2023-11-29 06:18:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:18:09,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:18:09,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:18:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928845064] [2023-11-29 06:18:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:18:09,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:18:09,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:18:09,679 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:18:09,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3c8a0e-7a51-43e9-b73d-7842075cc52b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:18:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:18:10,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-29 06:18:10,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:18:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3417 proven. 727 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2023-11-29 06:18:18,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:18:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 114 proven. 33 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-11-29 06:18:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:18:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255627814] [2023-11-29 06:18:45,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:18:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928845064] [2023-11-29 06:18:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928845064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:18:45,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:18:45,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 60 [2023-11-29 06:18:45,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026865693] [2023-11-29 06:18:45,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:18:45,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-29 06:18:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:18:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-29 06:18:45,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2939, Unknown=1, NotChecked=0, Total=3540 [2023-11-29 06:18:45,692 INFO L87 Difference]: Start difference. First operand 99423 states and 166166 transitions. Second operand has 60 states, 60 states have (on average 3.4166666666666665) internal successors, (205), 56 states have internal predecessors, (205), 14 states have call successors, (100), 13 states have call predecessors, (100), 19 states have return successors, (100), 14 states have call predecessors, (100), 14 states have call successors, (100) [2023-11-29 06:18:50,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:19:27,186 WARN L293 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 152 DAG size of output: 149 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:19:48,663 WARN L293 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 154 DAG size of output: 151 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:20:31,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:33,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:37,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:52,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:55,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:57,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:04,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:07,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:15,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:22,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:28,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:31,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:33,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:40,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:41,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:42,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:53,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:56,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:22:04,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:22:10,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:22:14,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:23:08,800 WARN L293 SmtUtils]: Spent 42.73s on a formula simplification. DAG size of input: 166 DAG size of output: 147 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:23:36,444 WARN L293 SmtUtils]: Spent 21.52s on a formula simplification. DAG size of input: 169 DAG size of output: 150 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:24:13,349 WARN L293 SmtUtils]: Spent 29.94s on a formula simplification. DAG size of input: 171 DAG size of output: 152 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:24:15,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:24:20,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:06,275 WARN L293 SmtUtils]: Spent 18.97s on a formula simplification. DAG size of input: 167 DAG size of output: 148 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:25:07,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []