./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/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_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/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_9c9723c5-2a96-4c76-b451-8172265732fe/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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:57:08,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:57:08,907 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:57:08,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:57:08,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:57:08,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:57:08,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:57:08,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:57:08,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:57:08,936 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:57:08,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:57:08,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:57:08,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:57:08,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:57:08,939 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:57:08,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:57:08,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:57:08,940 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:57:08,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:57:08,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:57:08,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:57:08,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:57:08,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:57:08,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:57:08,944 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:57:08,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:57:08,944 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:57:08,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:57:08,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:57:08,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:57:08,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:57:08,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:57:08,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:57:08,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:57:08,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:57:08,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:57:08,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:57:08,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:57:08,956 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:57:08,956 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:57:08,956 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:57:08,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:57:08,957 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_9c9723c5-2a96-4c76-b451-8172265732fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2023-11-29 06:57:09,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:57:09,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:57:09,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:57:09,215 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:57:09,215 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:57:09,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2023-11-29 06:57:11,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:57:12,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:57:12,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2023-11-29 06:57:12,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/data/97ed413cd/b4cbcc1e57f94a2cba5af7f843b6b6de/FLAG04dd908fe [2023-11-29 06:57:12,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/data/97ed413cd/b4cbcc1e57f94a2cba5af7f843b6b6de [2023-11-29 06:57:12,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:57:12,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:57:12,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:57:12,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:57:12,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:57:12,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc8c408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12, skipping insertion in model container [2023-11-29 06:57:12,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:57:12,307 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_9c9723c5-2a96-4c76-b451-8172265732fe/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2023-11-29 06:57:12,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:57:12,338 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:57:12,351 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_9c9723c5-2a96-4c76-b451-8172265732fe/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2023-11-29 06:57:12,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:57:12,374 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:57:12,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12 WrapperNode [2023-11-29 06:57:12,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:57:12,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:57:12,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:57:12,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:57:12,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,408 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2023-11-29 06:57:12,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:57:12,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:57:12,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:57:12,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:57:12,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,422 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,431 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 06:57:12,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:57:12,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:57:12,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:57:12,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:57:12,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (1/1) ... [2023-11-29 06:57:12,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:57:12,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:12,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:57:12,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:57:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:57:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:57:12,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:57:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:57:12,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:57:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:57:12,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 06:57:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 06:57:12,574 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:57:12,577 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:57:12,719 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:57:12,740 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:57:12,740 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:57:12,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:12 BoogieIcfgContainer [2023-11-29 06:57:12,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:57:12,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:57:12,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:57:12,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:57:12,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:57:12" (1/3) ... [2023-11-29 06:57:12,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720b2ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:12, skipping insertion in model container [2023-11-29 06:57:12,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:12" (2/3) ... [2023-11-29 06:57:12,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720b2ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:12, skipping insertion in model container [2023-11-29 06:57:12,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:12" (3/3) ... [2023-11-29 06:57:12,751 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2023-11-29 06:57:12,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:57:12,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:57:12,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:57:12,834 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;@8f1ccb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:57:12,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:57:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 06:57:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 06:57:12,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:12,849 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:12,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:12,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1865535902, now seen corresponding path program 1 times [2023-11-29 06:57:12,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:12,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148850123] [2023-11-29 06:57:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:12,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:13,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:13,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148850123] [2023-11-29 06:57:13,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:57:13,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293333232] [2023-11-29 06:57:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:13,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:13,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:13,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:13,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:57:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:13,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:57:13,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 06:57:13,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:57:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293333232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:13,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:13,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:57:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36283012] [2023-11-29 06:57:13,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:13,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:57:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:57:13,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:57:13,242 INFO L87 Difference]: Start difference. First operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 06:57:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:13,273 INFO L93 Difference]: Finished difference Result 62 states and 107 transitions. [2023-11-29 06:57:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:57:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2023-11-29 06:57:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:13,284 INFO L225 Difference]: With dead ends: 62 [2023-11-29 06:57:13,285 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 06:57:13,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 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 06:57:13,292 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:13,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:57:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 06:57:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-29 06:57:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 06:57:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-11-29 06:57:13,331 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 38 [2023-11-29 06:57:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:13,332 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-11-29 06:57:13,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 06:57:13,332 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-11-29 06:57:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 06:57:13,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:13,335 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:13,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:13,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:57:13,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:13,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash -279596905, now seen corresponding path program 1 times [2023-11-29 06:57:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006280038] [2023-11-29 06:57:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:13,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637048402] [2023-11-29 06:57:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:13,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:13,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:13,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:13,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:57:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:13,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:57:13,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 06:57:13,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 06:57:13,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006280038] [2023-11-29 06:57:13,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637048402] [2023-11-29 06:57:13,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637048402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:13,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:13,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-29 06:57:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394553512] [2023-11-29 06:57:13,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:13,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:57:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:57:13,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:57:13,823 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 06:57:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:13,945 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2023-11-29 06:57:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:57:13,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-11-29 06:57:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:13,948 INFO L225 Difference]: With dead ends: 47 [2023-11-29 06:57:13,948 INFO L226 Difference]: Without dead ends: 39 [2023-11-29 06:57:13,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:57:13,950 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:13,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 134 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:57:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-29 06:57:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2023-11-29 06:57:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 06:57:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-11-29 06:57:13,963 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 39 [2023-11-29 06:57:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:13,964 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-11-29 06:57:13,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 06:57:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-11-29 06:57:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 06:57:13,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:13,966 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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 06:57:13,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:57:14,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:14,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:14,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:14,173 INFO L85 PathProgramCache]: Analyzing trace with hash -76887146, now seen corresponding path program 1 times [2023-11-29 06:57:14,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:14,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818890830] [2023-11-29 06:57:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:14,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:14,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97097333] [2023-11-29 06:57:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:14,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:14,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:14,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:14,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:57:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:14,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:57:14,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 06:57:14,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-29 06:57:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818890830] [2023-11-29 06:57:14,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97097333] [2023-11-29 06:57:14,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97097333] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-29 06:57:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048899010] [2023-11-29 06:57:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:14,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:57:14,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:57:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:57:14,420 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 06:57:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:14,477 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-11-29 06:57:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:57:14,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2023-11-29 06:57:14,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:14,479 INFO L225 Difference]: With dead ends: 38 [2023-11-29 06:57:14,479 INFO L226 Difference]: Without dead ends: 36 [2023-11-29 06:57:14,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:57:14,481 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:14,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 122 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:57:14,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-29 06:57:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-29 06:57:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 06:57:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2023-11-29 06:57:14,492 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 40 [2023-11-29 06:57:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:14,492 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2023-11-29 06:57:14,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 06:57:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2023-11-29 06:57:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:57:14,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:14,494 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 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 06:57:14,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:14,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:14,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:14,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash 345761675, now seen corresponding path program 1 times [2023-11-29 06:57:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845477562] [2023-11-29 06:57:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:14,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:14,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164308158] [2023-11-29 06:57:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:14,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:14,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:57:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:14,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:57:14,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 06:57:14,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845477562] [2023-11-29 06:57:15,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164308158] [2023-11-29 06:57:15,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164308158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:15,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:15,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 06:57:15,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256712324] [2023-11-29 06:57:15,061 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:15,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:57:15,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:57:15,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:57:15,063 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 06:57:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:15,275 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-11-29 06:57:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:57:15,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2023-11-29 06:57:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:15,278 INFO L225 Difference]: With dead ends: 49 [2023-11-29 06:57:15,278 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 06:57:15,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:57:15,279 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:15,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 148 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:57:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 06:57:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-11-29 06:57:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:57:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-11-29 06:57:15,294 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 45 [2023-11-29 06:57:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:15,295 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-11-29 06:57:15,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 06:57:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-11-29 06:57:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 06:57:15,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:15,297 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 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 06:57:15,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:57:15,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:15,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:15,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash -954985354, now seen corresponding path program 1 times [2023-11-29 06:57:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012440221] [2023-11-29 06:57:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:15,518 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:15,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090980872] [2023-11-29 06:57:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:15,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:15,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:15,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:15,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:57:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:15,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 06:57:15,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 06:57:15,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 06:57:16,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:16,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012440221] [2023-11-29 06:57:16,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:16,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090980872] [2023-11-29 06:57:16,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090980872] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:16,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:16,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-29 06:57:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778910869] [2023-11-29 06:57:16,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:16,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:57:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:57:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:57:16,066 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 06:57:16,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:16,140 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2023-11-29 06:57:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:57:16,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2023-11-29 06:57:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:16,142 INFO L225 Difference]: With dead ends: 53 [2023-11-29 06:57:16,142 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 06:57:16,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:57:16,143 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 9 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:16,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 126 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:57:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 06:57:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-29 06:57:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:57:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2023-11-29 06:57:16,159 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 50 [2023-11-29 06:57:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:16,159 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2023-11-29 06:57:16,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 06:57:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2023-11-29 06:57:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 06:57:16,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:16,161 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 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 06:57:16,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:57:16,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:16,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:16,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2047387093, now seen corresponding path program 1 times [2023-11-29 06:57:16,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:16,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381768166] [2023-11-29 06:57:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:16,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:16,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:16,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153624796] [2023-11-29 06:57:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:16,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:16,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:16,382 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:16,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:57:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:16,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 06:57:16,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-29 06:57:16,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:16,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:16,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381768166] [2023-11-29 06:57:16,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153624796] [2023-11-29 06:57:16,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153624796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:16,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:16,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 06:57:16,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513952344] [2023-11-29 06:57:16,873 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:16,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:57:16,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:16,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:57:16,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:57:16,875 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-29 06:57:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:17,105 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2023-11-29 06:57:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:57:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2023-11-29 06:57:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:17,110 INFO L225 Difference]: With dead ends: 59 [2023-11-29 06:57:17,110 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 06:57:17,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:57:17,114 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:17,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 135 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:57:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 06:57:17,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2023-11-29 06:57:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:57:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-11-29 06:57:17,151 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 55 [2023-11-29 06:57:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:17,151 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-11-29 06:57:17,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-29 06:57:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-11-29 06:57:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 06:57:17,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:17,154 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 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 06:57:17,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:57:17,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 06:57:17,362 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:17,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash 392643903, now seen corresponding path program 1 times [2023-11-29 06:57:17,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:17,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271309955] [2023-11-29 06:57:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:17,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:17,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:17,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538925607] [2023-11-29 06:57:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:17,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:17,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:17,376 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:17,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:57:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:17,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:57:17,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-29 06:57:17,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-29 06:57:17,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:17,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271309955] [2023-11-29 06:57:17,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:17,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538925607] [2023-11-29 06:57:17,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538925607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:17,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:17,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-11-29 06:57:17,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267414390] [2023-11-29 06:57:17,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:17,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:57:17,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:17,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:57:17,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:57:17,592 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 06:57:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:17,795 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2023-11-29 06:57:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:57:17,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 64 [2023-11-29 06:57:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:17,798 INFO L225 Difference]: With dead ends: 101 [2023-11-29 06:57:17,799 INFO L226 Difference]: Without dead ends: 93 [2023-11-29 06:57:17,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:57:17,800 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 36 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:17,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 281 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:57:17,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-29 06:57:17,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2023-11-29 06:57:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 45 states have (on average 1.2) internal successors, (54), 46 states have internal predecessors, (54), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-29 06:57:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 117 transitions. [2023-11-29 06:57:17,825 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 117 transitions. Word has length 64 [2023-11-29 06:57:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:17,825 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 117 transitions. [2023-11-29 06:57:17,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 06:57:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 117 transitions. [2023-11-29 06:57:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 06:57:17,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:17,827 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 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 06:57:17,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:18,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:57:18,030 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:18,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash -45785549, now seen corresponding path program 1 times [2023-11-29 06:57:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:18,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156247875] [2023-11-29 06:57:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:18,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:18,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:18,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573807978] [2023-11-29 06:57:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:18,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:18,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:18,043 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:18,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:57:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:57:18,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-29 06:57:18,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 06:57:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:18,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156247875] [2023-11-29 06:57:18,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:18,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573807978] [2023-11-29 06:57:18,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573807978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:18,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:18,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 06:57:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068926586] [2023-11-29 06:57:18,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:18,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:57:18,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:18,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:57:18,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:57:18,362 INFO L87 Difference]: Start difference. First operand 84 states and 117 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2023-11-29 06:57:18,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:18,541 INFO L93 Difference]: Finished difference Result 106 states and 144 transitions. [2023-11-29 06:57:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:57:18,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) Word has length 70 [2023-11-29 06:57:18,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:18,543 INFO L225 Difference]: With dead ends: 106 [2023-11-29 06:57:18,543 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 06:57:18,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:57:18,545 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:18,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 216 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:57:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 06:57:18,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2023-11-29 06:57:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 06:57:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2023-11-29 06:57:18,562 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 70 [2023-11-29 06:57:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:18,563 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2023-11-29 06:57:18,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2023-11-29 06:57:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2023-11-29 06:57:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 06:57:18,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:18,565 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:57:18,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:57:18,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:18,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:18,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1305329662, now seen corresponding path program 1 times [2023-11-29 06:57:18,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:18,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403815410] [2023-11-29 06:57:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:18,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:18,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:18,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521246585] [2023-11-29 06:57:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:18,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:18,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:18,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:18,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:57:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 06:57:18,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 06:57:19,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-29 06:57:20,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:20,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403815410] [2023-11-29 06:57:20,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:20,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521246585] [2023-11-29 06:57:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521246585] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:20,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-29 06:57:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627969308] [2023-11-29 06:57:20,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:20,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:57:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:57:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:57:20,153 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 17 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-29 06:57:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:26,298 INFO L93 Difference]: Finished difference Result 174 states and 261 transitions. [2023-11-29 06:57:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 06:57:26,299 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 17 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 86 [2023-11-29 06:57:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:26,302 INFO L225 Difference]: With dead ends: 174 [2023-11-29 06:57:26,303 INFO L226 Difference]: Without dead ends: 172 [2023-11-29 06:57:26,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=498, Invalid=2052, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 06:57:26,304 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 139 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:26,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 653 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 06:57:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-29 06:57:26,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 123. [2023-11-29 06:57:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 67 states have internal predecessors, (80), 49 states have call successors, (49), 8 states have call predecessors, (49), 8 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 06:57:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 177 transitions. [2023-11-29 06:57:26,372 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 177 transitions. Word has length 86 [2023-11-29 06:57:26,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:26,372 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 177 transitions. [2023-11-29 06:57:26,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 17 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-29 06:57:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 177 transitions. [2023-11-29 06:57:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:57:26,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:26,375 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 06:57:26,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:57:26,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 06:57:26,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:26,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2239709, now seen corresponding path program 1 times [2023-11-29 06:57:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662263315] [2023-11-29 06:57:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:26,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:26,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:26,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585890630] [2023-11-29 06:57:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:26,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:26,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:26,587 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:26,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:57:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:26,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 06:57:26,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 38 proven. 36 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-29 06:57:27,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-29 06:57:27,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:27,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662263315] [2023-11-29 06:57:27,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:27,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585890630] [2023-11-29 06:57:27,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585890630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:27,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 20 [2023-11-29 06:57:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238079064] [2023-11-29 06:57:27,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:27,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:57:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:57:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:57:27,220 INFO L87 Difference]: Start difference. First operand 123 states and 177 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 17 states have internal predecessors, (41), 9 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2023-11-29 06:57:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:28,006 INFO L93 Difference]: Finished difference Result 148 states and 214 transitions. [2023-11-29 06:57:28,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:57:28,006 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 17 states have internal predecessors, (41), 9 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 91 [2023-11-29 06:57:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:28,008 INFO L225 Difference]: With dead ends: 148 [2023-11-29 06:57:28,008 INFO L226 Difference]: Without dead ends: 138 [2023-11-29 06:57:28,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:57:28,010 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 65 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:28,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 345 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:57:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-29 06:57:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2023-11-29 06:57:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 70 states have internal predecessors, (79), 53 states have call successors, (53), 8 states have call predecessors, (53), 8 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-29 06:57:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 184 transitions. [2023-11-29 06:57:28,064 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 184 transitions. Word has length 91 [2023-11-29 06:57:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:28,064 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 184 transitions. [2023-11-29 06:57:28,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 17 states have internal predecessors, (41), 9 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2023-11-29 06:57:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 184 transitions. [2023-11-29 06:57:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 06:57:28,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:28,065 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:28,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:57:28,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:28,266 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:28,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:28,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1362743633, now seen corresponding path program 1 times [2023-11-29 06:57:28,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:28,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951572798] [2023-11-29 06:57:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:28,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:28,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203941691] [2023-11-29 06:57:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:28,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:28,277 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:28,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:57:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:28,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:57:28,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-11-29 06:57:28,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-29 06:57:28,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:28,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951572798] [2023-11-29 06:57:28,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:28,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203941691] [2023-11-29 06:57:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203941691] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:28,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:28,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-29 06:57:28,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922325171] [2023-11-29 06:57:28,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:28,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:57:28,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:28,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:57:28,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:57:28,521 INFO L87 Difference]: Start difference. First operand 129 states and 184 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2023-11-29 06:57:28,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:28,661 INFO L93 Difference]: Finished difference Result 140 states and 193 transitions. [2023-11-29 06:57:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:57:28,662 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 97 [2023-11-29 06:57:28,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:28,662 INFO L225 Difference]: With dead ends: 140 [2023-11-29 06:57:28,663 INFO L226 Difference]: Without dead ends: 67 [2023-11-29 06:57:28,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:57:28,664 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 17 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:28,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 232 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:57:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-29 06:57:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-29 06:57:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 06:57:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2023-11-29 06:57:28,681 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 97 [2023-11-29 06:57:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:28,681 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2023-11-29 06:57:28,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2023-11-29 06:57:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2023-11-29 06:57:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 06:57:28,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:28,682 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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 06:57:28,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:28,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:28,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:28,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:28,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1043945028, now seen corresponding path program 2 times [2023-11-29 06:57:28,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736768774] [2023-11-29 06:57:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:28,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:28,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:28,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86732653] [2023-11-29 06:57:28,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:57:28,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:28,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:28,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:28,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:57:28,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:57:28,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:57:28,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:57:28,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-11-29 06:57:29,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-11-29 06:57:29,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:29,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736768774] [2023-11-29 06:57:29,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:29,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86732653] [2023-11-29 06:57:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86732653] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:29,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:29,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-29 06:57:29,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535366561] [2023-11-29 06:57:29,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:29,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:57:29,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:57:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:57:29,284 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) [2023-11-29 06:57:29,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:29,488 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2023-11-29 06:57:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:57:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) Word has length 130 [2023-11-29 06:57:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:29,489 INFO L225 Difference]: With dead ends: 67 [2023-11-29 06:57:29,489 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 06:57:29,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:57:29,490 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 25 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:29,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 275 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:57:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 06:57:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 06:57:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 06:57:29,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2023-11-29 06:57:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:29,491 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:57:29,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) [2023-11-29 06:57:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 06:57:29,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 06:57:29,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 06:57:29,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:29,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:29,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 06:57:30,725 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= |ULTIMATE.start_main_~k~0#1| 0) .cse8) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2023-11-29 06:57:30,725 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= |ULTIMATE.start_main_~k~0#1| 0) .cse8) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2023-11-29 06:57:30,726 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) [2023-11-29 06:57:30,726 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2023-11-29 06:57:30,726 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= |ULTIMATE.start_main_~k~0#1| 0) .cse8) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2023-11-29 06:57:30,726 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 41 68) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~c~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~y~0#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 (= |ULTIMATE.start_main_~s~0#1| 1)) (and .cse0 (= (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~s~0#1|) 0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~r~0#1| 1)))) [2023-11-29 06:57:30,726 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (and (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 1) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) 0) (= |ULTIMATE.start_main_~y~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (= (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|)) [2023-11-29 06:57:30,726 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 06:57:30,726 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2023-11-29 06:57:30,727 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= |ULTIMATE.start_main_~k~0#1| 0) .cse8) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2023-11-29 06:57:30,727 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2023-11-29 06:57:30,727 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 06:57:30,727 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse2 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* 2 |ULTIMATE.start_main_~b~0#1|))) (and (or (< .cse0 (+ |ULTIMATE.start_main_~c~0#1| 1)) (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~q~0#1| .cse1) .cse2)) (= |ULTIMATE.start_main_~a~0#1| .cse2) (or (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= .cse2 (+ |ULTIMATE.start_main_~q~0#1| .cse1)) (< .cse0 (+ |ULTIMATE.start_main_~a~0#1| 1))) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (or (= |ULTIMATE.start_main_~b~0#1| 0) (= (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|)))) [2023-11-29 06:57:30,727 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 1)) [2023-11-29 06:57:30,727 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 1)) [2023-11-29 06:57:30,727 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-11-29 06:57:30,727 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-11-29 06:57:30,727 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= |ULTIMATE.start_main_~k~0#1| 0) .cse8) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-11-29 06:57:30,728 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-11-29 06:57:30,729 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-11-29 06:57:30,729 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-11-29 06:57:30,729 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-11-29 06:57:30,731 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:30,733 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:57:30,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:57:30 BoogieIcfgContainer [2023-11-29 06:57:30,744 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:57:30,744 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:57:30,744 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:57:30,744 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:57:30,745 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:12" (3/4) ... [2023-11-29 06:57:30,747 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 06:57:30,750 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-29 06:57:30,750 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 06:57:30,755 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-29 06:57:30,756 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 06:57:30,756 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 06:57:30,756 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 06:57:30,848 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:57:30,849 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 06:57:30,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:57:30,850 INFO L158 Benchmark]: Toolchain (without parser) took 18691.01ms. Allocated memory was 125.8MB in the beginning and 163.6MB in the end (delta: 37.7MB). Free memory was 88.7MB in the beginning and 45.6MB in the end (delta: 43.1MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2023-11-29 06:57:30,850 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:57:30,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.34ms. Allocated memory is still 125.8MB. Free memory was 88.7MB in the beginning and 77.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:57:30,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.01ms. Allocated memory is still 125.8MB. Free memory was 77.6MB in the beginning and 75.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:57:30,851 INFO L158 Benchmark]: Boogie Preprocessor took 32.40ms. Allocated memory is still 125.8MB. Free memory was 75.7MB in the beginning and 74.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:57:30,851 INFO L158 Benchmark]: RCFGBuilder took 298.49ms. Allocated memory is still 125.8MB. Free memory was 74.0MB in the beginning and 61.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 06:57:30,852 INFO L158 Benchmark]: TraceAbstraction took 18000.05ms. Allocated memory was 125.8MB in the beginning and 163.6MB in the end (delta: 37.7MB). Free memory was 60.8MB in the beginning and 50.8MB in the end (delta: 10.1MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2023-11-29 06:57:30,852 INFO L158 Benchmark]: Witness Printer took 104.80ms. Allocated memory is still 163.6MB. Free memory was 50.8MB in the beginning and 45.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:57:30,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.34ms. Allocated memory is still 125.8MB. Free memory was 88.7MB in the beginning and 77.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.01ms. Allocated memory is still 125.8MB. Free memory was 77.6MB in the beginning and 75.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.40ms. Allocated memory is still 125.8MB. Free memory was 75.7MB in the beginning and 74.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 298.49ms. Allocated memory is still 125.8MB. Free memory was 74.0MB in the beginning and 61.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18000.05ms. Allocated memory was 125.8MB in the beginning and 163.6MB in the end (delta: 37.7MB). Free memory was 60.8MB in the beginning and 50.8MB in the end (delta: 10.1MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. * Witness Printer took 104.80ms. Allocated memory is still 163.6MB. Free memory was 50.8MB in the beginning and 45.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.9s, OverallIterations: 12, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 454 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 406 mSDsluCounter, 2708 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2278 mSDsCounter, 382 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2054 IncrementalHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 382 mSolverCounterUnsat, 430 mSDtfsCounter, 2054 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1534 GetRequests, 1326 SyntacticMatches, 7 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=10, InterpolantAutomatonStates: 136, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 80 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 105 PreInvPairs, 136 NumberOfFragments, 608 HoareAnnotationTreeSize, 105 FomulaSimplifications, 3602 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 16 FomulaSimplificationsInter, 760 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 843 NumberOfCodeBlocks, 843 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1451 ConstructedInterpolants, 0 QuantifiedInterpolants, 4605 SizeOfPredicates, 55 NumberOfNonLiveVariables, 2032 ConjunctsInSsa, 225 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 3262/3618 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((b == 1) && (p == 1)) && (c == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1)) || (((((((((((c == 0) && (k == 1)) && (b == 1)) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((c == 0) && (yy == (y * y))) && (p == 1)) && (b == y)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1)) || ((((((((c == 0) && ((q + s) == 0)) && (p == 0)) && (b == 0)) && (a == 1)) && (x == 1)) && (y == 1)) && (r == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-29 06:57:30,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9723c5-2a96-4c76-b451-8172265732fe/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE