./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/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_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/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_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/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 ead0eea170c5a9d81f9726cf37f718700e7559d903645dc78a3313310603417e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:39:24,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:39:24,353 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:39:24,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:39:24,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:39:24,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:39:24,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:39:24,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:39:24,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:39:24,385 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:39:24,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:39:24,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:39:24,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:39:24,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:39:24,388 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:39:24,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:39:24,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:39:24,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:39:24,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:39:24,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:39:24,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:39:24,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:39:24,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:39:24,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:39:24,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:39:24,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:39:24,395 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:39:24,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:39:24,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:39:24,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:39:24,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:39:24,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:24,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:39:24,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:39:24,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:39:24,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:39:24,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:39:24,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:39:24,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:39:24,399 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:39:24,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:39:24,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:39:24,400 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_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ead0eea170c5a9d81f9726cf37f718700e7559d903645dc78a3313310603417e [2023-11-29 01:39:24,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:39:24,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:39:24,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:39:24,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:39:24,651 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:39:24,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i [2023-11-29 01:39:27,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:39:27,645 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:39:27,645 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i [2023-11-29 01:39:27,661 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/data/35a00af9e/f2db7b85d5004678936c1c941c98c30e/FLAG3d606193e [2023-11-29 01:39:27,674 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/data/35a00af9e/f2db7b85d5004678936c1c941c98c30e [2023-11-29 01:39:27,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:39:27,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:39:27,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:27,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:39:27,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:39:27,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55314521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27, skipping insertion in model container [2023-11-29 01:39:27,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,728 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:39:27,845 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_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i[916,929] [2023-11-29 01:39:28,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:28,032 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:39:28,044 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_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i[916,929] [2023-11-29 01:39:28,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:28,146 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:39:28,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28 WrapperNode [2023-11-29 01:39:28,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:28,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:28,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:39:28,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:39:28,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,267 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 848 [2023-11-29 01:39:28,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:28,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:39:28,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:39:28,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:39:28,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,363 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 01:39:28,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,393 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:39:28,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:39:28,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:39:28,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:39:28,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:28,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:39:28,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:39:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:39:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:39:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:39:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:39:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:39:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:39:28,680 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:39:28,682 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:39:29,680 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:39:29,745 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:39:29,746 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:39:29,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:29 BoogieIcfgContainer [2023-11-29 01:39:29,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:39:29,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:39:29,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:39:29,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:39:29,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:39:27" (1/3) ... [2023-11-29 01:39:29,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1560d7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:29, skipping insertion in model container [2023-11-29 01:39:29,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (2/3) ... [2023-11-29 01:39:29,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1560d7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:29, skipping insertion in model container [2023-11-29 01:39:29,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:29" (3/3) ... [2023-11-29 01:39:29,754 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-10.i [2023-11-29 01:39:29,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:39:29,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:39:29,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:39:29,824 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;@66ae0a3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:39:29,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:39:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 233 states have (on average 1.6523605150214593) internal successors, (385), 234 states have internal predecessors, (385), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-29 01:39:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:29,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:29,865 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:29,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:29,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash 607313433, now seen corresponding path program 1 times [2023-11-29 01:39:29,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:29,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75457923] [2023-11-29 01:39:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:29,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:30,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:30,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75457923] [2023-11-29 01:39:30,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:39:30,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450755620] [2023-11-29 01:39:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:30,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:30,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:30,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:30,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:39:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:30,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:39:30,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 18818 trivial. 0 not checked. [2023-11-29 01:39:30,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:30,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450755620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:30,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:30,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:39:30,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060180588] [2023-11-29 01:39:30,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:30,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:39:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:39:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:39:30,817 INFO L87 Difference]: Start difference. First operand has 334 states, 233 states have (on average 1.6523605150214593) internal successors, (385), 234 states have internal predecessors, (385), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) [2023-11-29 01:39:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:30,897 INFO L93 Difference]: Finished difference Result 664 states and 1256 transitions. [2023-11-29 01:39:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:39:30,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) Word has length 641 [2023-11-29 01:39:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:30,913 INFO L225 Difference]: With dead ends: 664 [2023-11-29 01:39:30,914 INFO L226 Difference]: Without dead ends: 331 [2023-11-29 01:39:30,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 640 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 01:39:30,925 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:30,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 568 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-29 01:39:31,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-11-29 01:39:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 231 states have (on average 1.6233766233766234) internal successors, (375), 231 states have internal predecessors, (375), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-29 01:39:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 571 transitions. [2023-11-29 01:39:31,014 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 571 transitions. Word has length 641 [2023-11-29 01:39:31,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:31,015 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 571 transitions. [2023-11-29 01:39:31,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) [2023-11-29 01:39:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 571 transitions. [2023-11-29 01:39:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:31,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:31,029 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:31,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:39:31,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:31,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:31,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:31,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1719348281, now seen corresponding path program 1 times [2023-11-29 01:39:31,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:31,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324640630] [2023-11-29 01:39:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:31,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:31,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:31,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054426391] [2023-11-29 01:39:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:31,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:31,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:31,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:31,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:39:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:31,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:39:31,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:31,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:31,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324640630] [2023-11-29 01:39:31,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054426391] [2023-11-29 01:39:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054426391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:31,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380326546] [2023-11-29 01:39:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:31,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:31,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:31,908 INFO L87 Difference]: Start difference. First operand 331 states and 571 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:31,968 INFO L93 Difference]: Finished difference Result 662 states and 1143 transitions. [2023-11-29 01:39:31,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:31,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:39:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:31,976 INFO L225 Difference]: With dead ends: 662 [2023-11-29 01:39:31,977 INFO L226 Difference]: Without dead ends: 332 [2023-11-29 01:39:31,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:31,980 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 0 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:31,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1129 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-29 01:39:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-11-29 01:39:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 232 states have (on average 1.6206896551724137) internal successors, (376), 232 states have internal predecessors, (376), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-29 01:39:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 572 transitions. [2023-11-29 01:39:32,030 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 572 transitions. Word has length 641 [2023-11-29 01:39:32,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:32,033 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 572 transitions. [2023-11-29 01:39:32,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 572 transitions. [2023-11-29 01:39:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:32,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:32,058 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:32,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:39:32,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:32,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:32,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash -841514565, now seen corresponding path program 1 times [2023-11-29 01:39:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:32,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130417898] [2023-11-29 01:39:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:32,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:32,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352688506] [2023-11-29 01:39:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:32,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:32,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:32,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:32,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:39:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:32,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:39:32,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:32,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:32,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130417898] [2023-11-29 01:39:32,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352688506] [2023-11-29 01:39:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352688506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:32,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:32,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:32,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900046927] [2023-11-29 01:39:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:32,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:32,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:32,897 INFO L87 Difference]: Start difference. First operand 332 states and 572 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:32,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:32,980 INFO L93 Difference]: Finished difference Result 994 states and 1714 transitions. [2023-11-29 01:39:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:32,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:39:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:32,989 INFO L225 Difference]: With dead ends: 994 [2023-11-29 01:39:32,989 INFO L226 Difference]: Without dead ends: 663 [2023-11-29 01:39:32,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:32,992 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 547 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:32,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1459 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-11-29 01:39:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 661. [2023-11-29 01:39:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 462 states have (on average 1.619047619047619) internal successors, (748), 462 states have internal predecessors, (748), 196 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-29 01:39:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1140 transitions. [2023-11-29 01:39:33,071 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1140 transitions. Word has length 641 [2023-11-29 01:39:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:33,073 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1140 transitions. [2023-11-29 01:39:33,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1140 transitions. [2023-11-29 01:39:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:33,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:33,078 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:33,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:39:33,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:33,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:33,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 696825465, now seen corresponding path program 1 times [2023-11-29 01:39:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662342920] [2023-11-29 01:39:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:33,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:33,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265850967] [2023-11-29 01:39:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:33,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:33,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:33,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:39:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:33,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:39:33,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:33,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:33,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662342920] [2023-11-29 01:39:33,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265850967] [2023-11-29 01:39:33,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265850967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:33,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:33,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:33,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665590408] [2023-11-29 01:39:33,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:33,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:33,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:33,870 INFO L87 Difference]: Start difference. First operand 661 states and 1140 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:33,944 INFO L93 Difference]: Finished difference Result 1769 states and 3057 transitions. [2023-11-29 01:39:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:33,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:39:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:33,954 INFO L225 Difference]: With dead ends: 1769 [2023-11-29 01:39:33,954 INFO L226 Difference]: Without dead ends: 1109 [2023-11-29 01:39:33,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:33,957 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 351 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:33,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1127 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2023-11-29 01:39:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1105. [2023-11-29 01:39:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 788 states have (on average 1.633248730964467) internal successors, (1287), 790 states have internal predecessors, (1287), 312 states have call successors, (312), 4 states have call predecessors, (312), 4 states have return successors, (312), 310 states have call predecessors, (312), 312 states have call successors, (312) [2023-11-29 01:39:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1911 transitions. [2023-11-29 01:39:34,065 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1911 transitions. Word has length 641 [2023-11-29 01:39:34,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:34,066 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1911 transitions. [2023-11-29 01:39:34,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1911 transitions. [2023-11-29 01:39:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:34,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:34,071 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:34,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:39:34,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:34,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:34,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1547157833, now seen corresponding path program 1 times [2023-11-29 01:39:34,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:34,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057052564] [2023-11-29 01:39:34,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:34,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:34,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22881072] [2023-11-29 01:39:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:34,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:34,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:34,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:39:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:39:34,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:34,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057052564] [2023-11-29 01:39:34,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22881072] [2023-11-29 01:39:34,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22881072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:34,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:34,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:34,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507179005] [2023-11-29 01:39:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:34,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:34,886 INFO L87 Difference]: Start difference. First operand 1105 states and 1911 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:35,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:35,039 INFO L93 Difference]: Finished difference Result 3305 states and 5717 transitions. [2023-11-29 01:39:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:35,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:39:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:35,061 INFO L225 Difference]: With dead ends: 3305 [2023-11-29 01:39:35,061 INFO L226 Difference]: Without dead ends: 2201 [2023-11-29 01:39:35,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:35,067 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 528 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:35,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1530 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2023-11-29 01:39:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2199. [2023-11-29 01:39:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1566 states have (on average 1.6232439335887612) internal successors, (2542), 1570 states have internal predecessors, (2542), 624 states have call successors, (624), 8 states have call predecessors, (624), 8 states have return successors, (624), 620 states have call predecessors, (624), 624 states have call successors, (624) [2023-11-29 01:39:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3790 transitions. [2023-11-29 01:39:35,321 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3790 transitions. Word has length 641 [2023-11-29 01:39:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:35,323 INFO L495 AbstractCegarLoop]: Abstraction has 2199 states and 3790 transitions. [2023-11-29 01:39:35,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3790 transitions. [2023-11-29 01:39:35,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:35,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:35,331 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:35,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:39:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:35,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:35,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1681171339, now seen corresponding path program 1 times [2023-11-29 01:39:35,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:35,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690634112] [2023-11-29 01:39:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:35,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:35,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375297205] [2023-11-29 01:39:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:35,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:35,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:35,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:35,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:39:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:36,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:39:36,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:36,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:36,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690634112] [2023-11-29 01:39:36,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375297205] [2023-11-29 01:39:36,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375297205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:36,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:36,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439330862] [2023-11-29 01:39:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:36,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:36,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:36,131 INFO L87 Difference]: Start difference. First operand 2199 states and 3790 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:36,347 INFO L93 Difference]: Finished difference Result 5785 states and 10003 transitions. [2023-11-29 01:39:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:36,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:39:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:36,373 INFO L225 Difference]: With dead ends: 5785 [2023-11-29 01:39:36,374 INFO L226 Difference]: Without dead ends: 3587 [2023-11-29 01:39:36,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:36,381 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 317 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:36,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1206 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:36,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2023-11-29 01:39:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3577. [2023-11-29 01:39:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 2696 states have (on average 1.6561572700296736) internal successors, (4465), 2708 states have internal predecessors, (4465), 864 states have call successors, (864), 16 states have call predecessors, (864), 16 states have return successors, (864), 852 states have call predecessors, (864), 864 states have call successors, (864) [2023-11-29 01:39:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 6193 transitions. [2023-11-29 01:39:36,710 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 6193 transitions. Word has length 641 [2023-11-29 01:39:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:36,711 INFO L495 AbstractCegarLoop]: Abstraction has 3577 states and 6193 transitions. [2023-11-29 01:39:36,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 6193 transitions. [2023-11-29 01:39:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:36,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:36,718 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:36,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 01:39:36,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:36,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:36,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2132715699, now seen corresponding path program 1 times [2023-11-29 01:39:36,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:36,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266107270] [2023-11-29 01:39:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:36,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:36,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:36,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700691375] [2023-11-29 01:39:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:36,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:36,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:36,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:39:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:37,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:39:37,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:37,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:37,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266107270] [2023-11-29 01:39:37,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:37,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700691375] [2023-11-29 01:39:37,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700691375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:37,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:37,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:37,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818388946] [2023-11-29 01:39:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:37,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:37,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:37,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:37,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:37,397 INFO L87 Difference]: Start difference. First operand 3577 states and 6193 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:37,671 INFO L93 Difference]: Finished difference Result 9679 states and 16602 transitions. [2023-11-29 01:39:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:37,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:39:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:37,706 INFO L225 Difference]: With dead ends: 9679 [2023-11-29 01:39:37,706 INFO L226 Difference]: Without dead ends: 6103 [2023-11-29 01:39:37,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:37,716 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 337 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:37,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1124 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6103 states. [2023-11-29 01:39:38,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6103 to 6097. [2023-11-29 01:39:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6097 states, 4412 states have (on average 1.5913417951042612) internal successors, (7021), 4440 states have internal predecessors, (7021), 1652 states have call successors, (1652), 32 states have call predecessors, (1652), 32 states have return successors, (1652), 1624 states have call predecessors, (1652), 1652 states have call successors, (1652) [2023-11-29 01:39:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6097 states to 6097 states and 10325 transitions. [2023-11-29 01:39:38,150 INFO L78 Accepts]: Start accepts. Automaton has 6097 states and 10325 transitions. Word has length 641 [2023-11-29 01:39:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:38,151 INFO L495 AbstractCegarLoop]: Abstraction has 6097 states and 10325 transitions. [2023-11-29 01:39:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6097 states and 10325 transitions. [2023-11-29 01:39:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:38,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:38,160 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:38,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:39:38,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:38,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:38,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1809163215, now seen corresponding path program 1 times [2023-11-29 01:39:38,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:38,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078049371] [2023-11-29 01:39:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:38,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:38,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435277361] [2023-11-29 01:39:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:38,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:38,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:38,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:38,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:39:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:38,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:39:38,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:40,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078049371] [2023-11-29 01:39:40,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435277361] [2023-11-29 01:39:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435277361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:40,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:40,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:40,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576499616] [2023-11-29 01:39:40,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:40,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:40,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:40,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:40,542 INFO L87 Difference]: Start difference. First operand 6097 states and 10325 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:41,401 INFO L93 Difference]: Finished difference Result 20312 states and 34662 transitions. [2023-11-29 01:39:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:41,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:39:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:41,494 INFO L225 Difference]: With dead ends: 20312 [2023-11-29 01:39:41,494 INFO L226 Difference]: Without dead ends: 14216 [2023-11-29 01:39:41,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:41,517 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1044 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:41,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 1497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:39:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14216 states. [2023-11-29 01:39:42,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14216 to 14212. [2023-11-29 01:39:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14212 states, 10742 states have (on average 1.62614038354124) internal successors, (17468), 10798 states have internal predecessors, (17468), 3402 states have call successors, (3402), 67 states have call predecessors, (3402), 67 states have return successors, (3402), 3346 states have call predecessors, (3402), 3402 states have call successors, (3402) [2023-11-29 01:39:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14212 states to 14212 states and 24272 transitions. [2023-11-29 01:39:42,676 INFO L78 Accepts]: Start accepts. Automaton has 14212 states and 24272 transitions. Word has length 641 [2023-11-29 01:39:42,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:42,677 INFO L495 AbstractCegarLoop]: Abstraction has 14212 states and 24272 transitions. [2023-11-29 01:39:42,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:42,678 INFO L276 IsEmpty]: Start isEmpty. Operand 14212 states and 24272 transitions. [2023-11-29 01:39:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:42,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:42,689 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:42,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:39:42,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:42,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:42,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -991514765, now seen corresponding path program 1 times [2023-11-29 01:39:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:42,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158162011] [2023-11-29 01:39:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:42,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:42,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:42,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983904477] [2023-11-29 01:39:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:42,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:42,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:42,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:43,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:39:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:43,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:39:43,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9331 proven. 120 refuted. 0 times theorem prover too weak. 9561 trivial. 0 not checked. [2023-11-29 01:39:43,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 171 proven. 120 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-11-29 01:39:44,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158162011] [2023-11-29 01:39:44,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983904477] [2023-11-29 01:39:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983904477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:44,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:44,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:39:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199071307] [2023-11-29 01:39:44,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:44,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:39:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:44,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:39:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:39:44,277 INFO L87 Difference]: Start difference. First operand 14212 states and 24272 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-11-29 01:39:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:45,286 INFO L93 Difference]: Finished difference Result 28196 states and 47861 transitions. [2023-11-29 01:39:45,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:39:45,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) Word has length 641 [2023-11-29 01:39:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:45,362 INFO L225 Difference]: With dead ends: 28196 [2023-11-29 01:39:45,362 INFO L226 Difference]: Without dead ends: 14256 [2023-11-29 01:39:45,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1274 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:39:45,392 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 672 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:45,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1139 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:39:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14256 states. [2023-11-29 01:39:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14256 to 13944. [2023-11-29 01:39:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13944 states, 10489 states have (on average 1.5725998665268377) internal successors, (16495), 10545 states have internal predecessors, (16495), 3370 states have call successors, (3370), 84 states have call predecessors, (3370), 84 states have return successors, (3370), 3314 states have call predecessors, (3370), 3370 states have call successors, (3370) [2023-11-29 01:39:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13944 states to 13944 states and 23235 transitions. [2023-11-29 01:39:46,717 INFO L78 Accepts]: Start accepts. Automaton has 13944 states and 23235 transitions. Word has length 641 [2023-11-29 01:39:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:46,718 INFO L495 AbstractCegarLoop]: Abstraction has 13944 states and 23235 transitions. [2023-11-29 01:39:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-11-29 01:39:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 13944 states and 23235 transitions. [2023-11-29 01:39:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:46,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:46,739 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:46,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:39:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:46,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:46,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash 500731253, now seen corresponding path program 1 times [2023-11-29 01:39:46,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:46,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045789607] [2023-11-29 01:39:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:46,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:47,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524211280] [2023-11-29 01:39:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:47,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:47,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:47,013 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:47,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:39:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:47,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:39:47,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:48,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:48,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045789607] [2023-11-29 01:39:48,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524211280] [2023-11-29 01:39:48,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524211280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:48,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:48,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:39:48,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797391874] [2023-11-29 01:39:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:48,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:39:48,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:48,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:39:48,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:48,266 INFO L87 Difference]: Start difference. First operand 13944 states and 23235 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:51,611 INFO L93 Difference]: Finished difference Result 59661 states and 99264 transitions. [2023-11-29 01:39:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:39:51,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:39:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:51,739 INFO L225 Difference]: With dead ends: 59661 [2023-11-29 01:39:51,739 INFO L226 Difference]: Without dead ends: 45857 [2023-11-29 01:39:51,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:39:51,768 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 3665 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3665 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:51,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3665 Valid, 3919 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:39:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45857 states. [2023-11-29 01:39:55,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45857 to 44706. [2023-11-29 01:39:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44706 states, 33482 states have (on average 1.5570754435218923) internal successors, (52134), 33703 states have internal predecessors, (52134), 10925 states have call successors, (10925), 298 states have call predecessors, (10925), 298 states have return successors, (10925), 10704 states have call predecessors, (10925), 10925 states have call successors, (10925) [2023-11-29 01:39:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44706 states to 44706 states and 73984 transitions. [2023-11-29 01:39:55,591 INFO L78 Accepts]: Start accepts. Automaton has 44706 states and 73984 transitions. Word has length 641 [2023-11-29 01:39:55,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:55,592 INFO L495 AbstractCegarLoop]: Abstraction has 44706 states and 73984 transitions. [2023-11-29 01:39:55,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:39:55,592 INFO L276 IsEmpty]: Start isEmpty. Operand 44706 states and 73984 transitions. [2023-11-29 01:39:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-29 01:39:55,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:55,610 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:55,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:39:55,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:39:55,811 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:55,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1457843533, now seen corresponding path program 1 times [2023-11-29 01:39:55,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:55,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442443287] [2023-11-29 01:39:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:55,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:55,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:55,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191020901] [2023-11-29 01:39:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:55,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:55,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:55,866 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:55,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:39:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:56,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:39:56,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:39:57,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:57,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:57,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442443287] [2023-11-29 01:39:57,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:57,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191020901] [2023-11-29 01:39:57,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191020901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:57,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:57,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:39:57,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727282660] [2023-11-29 01:39:57,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:57,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:57,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:57,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:57,743 INFO L87 Difference]: Start difference. First operand 44706 states and 73984 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:40:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:00,117 INFO L93 Difference]: Finished difference Result 94254 states and 155791 transitions. [2023-11-29 01:40:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:40:00,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-11-29 01:40:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:00,211 INFO L225 Difference]: With dead ends: 94254 [2023-11-29 01:40:00,211 INFO L226 Difference]: Without dead ends: 50656 [2023-11-29 01:40:00,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:00,257 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 269 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:00,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1357 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:40:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50656 states. [2023-11-29 01:40:04,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50656 to 50654. [2023-11-29 01:40:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50654 states, 37754 states have (on average 1.5531334428140064) internal successors, (58637), 38003 states have internal predecessors, (58637), 12561 states have call successors, (12561), 338 states have call predecessors, (12561), 338 states have return successors, (12561), 12312 states have call predecessors, (12561), 12561 states have call successors, (12561) [2023-11-29 01:40:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50654 states to 50654 states and 83759 transitions. [2023-11-29 01:40:04,421 INFO L78 Accepts]: Start accepts. Automaton has 50654 states and 83759 transitions. Word has length 641 [2023-11-29 01:40:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:04,422 INFO L495 AbstractCegarLoop]: Abstraction has 50654 states and 83759 transitions. [2023-11-29 01:40:04,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:40:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 50654 states and 83759 transitions. [2023-11-29 01:40:04,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-11-29 01:40:04,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:04,436 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:04,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:40:04,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:04,637 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:04,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:04,637 INFO L85 PathProgramCache]: Analyzing trace with hash 196345648, now seen corresponding path program 1 times [2023-11-29 01:40:04,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:04,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914171127] [2023-11-29 01:40:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:04,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:04,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:40:04,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37777227] [2023-11-29 01:40:04,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:04,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:04,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:04,693 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:04,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:40:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:05,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:40:05,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9183 proven. 114 refuted. 0 times theorem prover too weak. 9715 trivial. 0 not checked. [2023-11-29 01:40:05,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 177 proven. 114 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-11-29 01:40:05,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914171127] [2023-11-29 01:40:05,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:40:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37777227] [2023-11-29 01:40:05,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37777227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:05,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:05,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:40:05,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790486816] [2023-11-29 01:40:05,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:05,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:40:05,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:40:05,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:40:05,746 INFO L87 Difference]: Start difference. First operand 50654 states and 83759 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-11-29 01:40:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:08,081 INFO L93 Difference]: Finished difference Result 86024 states and 143029 transitions. [2023-11-29 01:40:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:40:08,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) Word has length 642 [2023-11-29 01:40:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:08,182 INFO L225 Difference]: With dead ends: 86024 [2023-11-29 01:40:08,182 INFO L226 Difference]: Without dead ends: 36236 [2023-11-29 01:40:08,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1286 GetRequests, 1276 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:40:08,269 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 875 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:08,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1124 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:40:08,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36236 states. [2023-11-29 01:40:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36236 to 27894. [2023-11-29 01:40:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27894 states, 20529 states have (on average 1.5352428272200302) internal successors, (31517), 20642 states have internal predecessors, (31517), 7077 states have call successors, (7077), 287 states have call predecessors, (7077), 287 states have return successors, (7077), 6964 states have call predecessors, (7077), 7077 states have call successors, (7077) [2023-11-29 01:40:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27894 states to 27894 states and 45671 transitions. [2023-11-29 01:40:10,608 INFO L78 Accepts]: Start accepts. Automaton has 27894 states and 45671 transitions. Word has length 642 [2023-11-29 01:40:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:10,608 INFO L495 AbstractCegarLoop]: Abstraction has 27894 states and 45671 transitions. [2023-11-29 01:40:10,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-11-29 01:40:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 27894 states and 45671 transitions. [2023-11-29 01:40:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-11-29 01:40:10,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:10,615 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:10,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:40:10,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:40:10,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:10,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:10,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2047637650, now seen corresponding path program 1 times [2023-11-29 01:40:10,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:10,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903921349] [2023-11-29 01:40:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:10,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:10,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:40:10,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601229492] [2023-11-29 01:40:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:10,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:10,880 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:10,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:40:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:11,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:40:11,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:40:12,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903921349] [2023-11-29 01:40:12,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:40:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601229492] [2023-11-29 01:40:12,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601229492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:12,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:12,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:40:12,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366340862] [2023-11-29 01:40:12,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:12,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:40:12,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:40:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:40:12,278 INFO L87 Difference]: Start difference. First operand 27894 states and 45671 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:40:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:14,031 INFO L93 Difference]: Finished difference Result 59394 states and 97137 transitions. [2023-11-29 01:40:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:40:14,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 642 [2023-11-29 01:40:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:14,091 INFO L225 Difference]: With dead ends: 59394 [2023-11-29 01:40:14,091 INFO L226 Difference]: Without dead ends: 32041 [2023-11-29 01:40:14,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:40:14,132 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 2335 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 3498 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:14,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2335 Valid, 3498 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:40:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32041 states. [2023-11-29 01:40:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32041 to 29430. [2023-11-29 01:40:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29430 states, 22065 states have (on average 1.5421708588261953) internal successors, (34028), 22178 states have internal predecessors, (34028), 7077 states have call successors, (7077), 287 states have call predecessors, (7077), 287 states have return successors, (7077), 6964 states have call predecessors, (7077), 7077 states have call successors, (7077) [2023-11-29 01:40:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29430 states to 29430 states and 48182 transitions. [2023-11-29 01:40:16,496 INFO L78 Accepts]: Start accepts. Automaton has 29430 states and 48182 transitions. Word has length 642 [2023-11-29 01:40:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:16,496 INFO L495 AbstractCegarLoop]: Abstraction has 29430 states and 48182 transitions. [2023-11-29 01:40:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:40:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 29430 states and 48182 transitions. [2023-11-29 01:40:16,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-11-29 01:40:16,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:16,506 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:16,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:40:16,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:40:16,707 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:16,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1558825680, now seen corresponding path program 1 times [2023-11-29 01:40:16,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:16,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605733330] [2023-11-29 01:40:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:16,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:40:16,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338465978] [2023-11-29 01:40:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:16,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:16,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:16,757 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:16,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:40:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:17,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:40:17,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-11-29 01:40:17,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:17,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:17,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605733330] [2023-11-29 01:40:17,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:40:17,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338465978] [2023-11-29 01:40:17,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338465978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:17,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:17,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:40:17,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444922102] [2023-11-29 01:40:17,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:18,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:40:18,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:18,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:40:18,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:40:18,001 INFO L87 Difference]: Start difference. First operand 29430 states and 48182 transitions. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:40:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:22,556 INFO L93 Difference]: Finished difference Result 82396 states and 135007 transitions. [2023-11-29 01:40:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:40:22,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 643 [2023-11-29 01:40:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:22,670 INFO L225 Difference]: With dead ends: 82396 [2023-11-29 01:40:22,670 INFO L226 Difference]: Without dead ends: 56405 [2023-11-29 01:40:22,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:40:22,715 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 4495 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:22,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4495 Valid, 4401 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:40:22,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56405 states. [2023-11-29 01:40:26,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56405 to 44308. [2023-11-29 01:40:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44308 states, 33487 states have (on average 1.5515573207513362) internal successors, (51957), 33664 states have internal predecessors, (51957), 10397 states have call successors, (10397), 423 states have call predecessors, (10397), 423 states have return successors, (10397), 10220 states have call predecessors, (10397), 10397 states have call successors, (10397) [2023-11-29 01:40:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44308 states to 44308 states and 72751 transitions. [2023-11-29 01:40:26,611 INFO L78 Accepts]: Start accepts. Automaton has 44308 states and 72751 transitions. Word has length 643 [2023-11-29 01:40:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:26,612 INFO L495 AbstractCegarLoop]: Abstraction has 44308 states and 72751 transitions. [2023-11-29 01:40:26,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-11-29 01:40:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 44308 states and 72751 transitions. [2023-11-29 01:40:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-11-29 01:40:26,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:26,620 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:26,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:40:26,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:40:26,821 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:26,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1357001746, now seen corresponding path program 1 times [2023-11-29 01:40:26,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:26,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823367099] [2023-11-29 01:40:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:26,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:40:26,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314476153] [2023-11-29 01:40:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:26,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:26,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:26,883 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:26,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:40:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:40:27,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9561 proven. 135 refuted. 0 times theorem prover too weak. 9316 trivial. 0 not checked. [2023-11-29 01:40:27,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 156 proven. 135 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-11-29 01:40:27,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:27,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823367099] [2023-11-29 01:40:27,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:40:27,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314476153] [2023-11-29 01:40:27,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314476153] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:27,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:27,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 01:40:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193029653] [2023-11-29 01:40:27,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:27,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:40:27,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:40:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:40:27,964 INFO L87 Difference]: Start difference. First operand 44308 states and 72751 transitions. Second operand has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 3 states have call predecessors, (144), 3 states have call successors, (144) [2023-11-29 01:40:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:46,947 INFO L93 Difference]: Finished difference Result 373799 states and 610520 transitions. [2023-11-29 01:40:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 01:40:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 3 states have call predecessors, (144), 3 states have call successors, (144) Word has length 643 [2023-11-29 01:40:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:47,750 INFO L225 Difference]: With dead ends: 373799 [2023-11-29 01:40:47,750 INFO L226 Difference]: Without dead ends: 329986 [2023-11-29 01:40:47,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1280 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=594, Invalid=1476, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:40:47,848 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 3139 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:47,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3281 Valid, 3332 Invalid, 3231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 01:40:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329986 states. [2023-11-29 01:41:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329986 to 154826. [2023-11-29 01:41:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154826 states, 120749 states have (on average 1.5659508567358735) internal successors, (189087), 121550 states have internal predecessors, (189087), 32893 states have call successors, (32893), 1183 states have call predecessors, (32893), 1183 states have return successors, (32893), 32092 states have call predecessors, (32893), 32893 states have call successors, (32893) [2023-11-29 01:41:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154826 states to 154826 states and 254873 transitions. [2023-11-29 01:41:04,122 INFO L78 Accepts]: Start accepts. Automaton has 154826 states and 254873 transitions. Word has length 643 [2023-11-29 01:41:04,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:04,123 INFO L495 AbstractCegarLoop]: Abstraction has 154826 states and 254873 transitions. [2023-11-29 01:41:04,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 3 states have call predecessors, (144), 3 states have call successors, (144) [2023-11-29 01:41:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand 154826 states and 254873 transitions. [2023-11-29 01:41:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-11-29 01:41:04,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:04,146 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:04,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:41:04,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:41:04,346 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:41:04,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1849627920, now seen corresponding path program 1 times [2023-11-29 01:41:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:41:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414086243] [2023-11-29 01:41:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:41:04,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:41:04,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326849526] [2023-11-29 01:41:04,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:04,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:41:04,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:41:04,399 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:41:04,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:41:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:04,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:41:04,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9297 proven. 171 refuted. 0 times theorem prover too weak. 9544 trivial. 0 not checked. [2023-11-29 01:41:05,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 120 proven. 171 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-11-29 01:41:05,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:41:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414086243] [2023-11-29 01:41:05,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:41:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326849526] [2023-11-29 01:41:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326849526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:41:05,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:05,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 01:41:05,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354313479] [2023-11-29 01:41:05,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:41:05,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:41:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:41:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:41:05,716 INFO L87 Difference]: Start difference. First operand 154826 states and 254873 transitions. Second operand has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 3 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) [2023-11-29 01:41:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:22,281 INFO L93 Difference]: Finished difference Result 375138 states and 614267 transitions. [2023-11-29 01:41:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:41:22,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 3 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) Word has length 643 [2023-11-29 01:41:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:22,914 INFO L225 Difference]: With dead ends: 375138 [2023-11-29 01:41:22,915 INFO L226 Difference]: Without dead ends: 226498 [2023-11-29 01:41:23,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:41:23,115 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 2246 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:23,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2326 Valid, 1679 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:41:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226498 states. [2023-11-29 01:41:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226498 to 118033. [2023-11-29 01:41:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118033 states, 91292 states have (on average 1.5481860403978442) internal successors, (141337), 91885 states have internal predecessors, (141337), 25601 states have call successors, (25601), 1139 states have call predecessors, (25601), 1139 states have return successors, (25601), 25008 states have call predecessors, (25601), 25601 states have call successors, (25601) [2023-11-29 01:41:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118033 states to 118033 states and 192539 transitions. [2023-11-29 01:41:35,909 INFO L78 Accepts]: Start accepts. Automaton has 118033 states and 192539 transitions. Word has length 643 [2023-11-29 01:41:35,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:35,910 INFO L495 AbstractCegarLoop]: Abstraction has 118033 states and 192539 transitions. [2023-11-29 01:41:35,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 3 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) [2023-11-29 01:41:35,911 INFO L276 IsEmpty]: Start isEmpty. Operand 118033 states and 192539 transitions. [2023-11-29 01:41:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-11-29 01:41:35,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:35,922 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:35,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:41:36,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:41:36,123 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:41:36,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 377102704, now seen corresponding path program 1 times [2023-11-29 01:41:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:41:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109565482] [2023-11-29 01:41:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:41:36,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:41:36,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867469091] [2023-11-29 01:41:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:36,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:41:36,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:41:36,172 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:41:36,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:41:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:36,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:41:36,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-11-29 01:41:37,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 156 proven. 423 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-11-29 01:41:38,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:41:38,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109565482] [2023-11-29 01:41:38,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:41:38,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867469091] [2023-11-29 01:41:38,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867469091] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:41:38,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:38,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 01:41:38,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939855723] [2023-11-29 01:41:38,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:38,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:41:38,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:41:38,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:41:38,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:41:38,228 INFO L87 Difference]: Start difference. First operand 118033 states and 192539 transitions. Second operand has 13 states, 13 states have (on average 17.23076923076923) internal successors, (224), 13 states have internal predecessors, (224), 4 states have call successors, (171), 3 states have call predecessors, (171), 7 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-29 01:41:49,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:49,509 INFO L93 Difference]: Finished difference Result 245039 states and 392482 transitions. [2023-11-29 01:41:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:41:49,510 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.23076923076923) internal successors, (224), 13 states have internal predecessors, (224), 4 states have call successors, (171), 3 states have call predecessors, (171), 7 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) Word has length 643 [2023-11-29 01:41:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:49,729 INFO L225 Difference]: With dead ends: 245039 [2023-11-29 01:41:49,729 INFO L226 Difference]: Without dead ends: 127214 [2023-11-29 01:41:49,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1273 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:41:49,834 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1203 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:49,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1354 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:41:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127214 states. [2023-11-29 01:42:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127214 to 118122. [2023-11-29 01:42:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118122 states, 92339 states have (on average 1.53837490117935) internal successors, (142052), 92932 states have internal predecessors, (142052), 23945 states have call successors, (23945), 1837 states have call predecessors, (23945), 1837 states have return successors, (23945), 23352 states have call predecessors, (23945), 23945 states have call successors, (23945) [2023-11-29 01:42:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118122 states to 118122 states and 189942 transitions. [2023-11-29 01:42:01,018 INFO L78 Accepts]: Start accepts. Automaton has 118122 states and 189942 transitions. Word has length 643 [2023-11-29 01:42:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:01,019 INFO L495 AbstractCegarLoop]: Abstraction has 118122 states and 189942 transitions. [2023-11-29 01:42:01,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.23076923076923) internal successors, (224), 13 states have internal predecessors, (224), 4 states have call successors, (171), 3 states have call predecessors, (171), 7 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-29 01:42:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 118122 states and 189942 transitions. [2023-11-29 01:42:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-11-29 01:42:01,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:01,035 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:01,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 01:42:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:42:01,236 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:42:01,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1581472082, now seen corresponding path program 1 times [2023-11-29 01:42:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:42:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906862102] [2023-11-29 01:42:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:42:01,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:42:01,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383545990] [2023-11-29 01:42:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:01,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:42:01,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:42:01,293 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:42:01,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:42:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:01,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:42:01,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9792 proven. 330 refuted. 0 times theorem prover too weak. 8890 trivial. 0 not checked. [2023-11-29 01:42:02,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 246 proven. 333 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-11-29 01:42:03,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:42:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906862102] [2023-11-29 01:42:03,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:42:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383545990] [2023-11-29 01:42:03,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383545990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:42:03,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:42:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 01:42:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176677849] [2023-11-29 01:42:03,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:42:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:42:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:42:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:42:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:42:03,209 INFO L87 Difference]: Start difference. First operand 118122 states and 189942 transitions. Second operand has 13 states, 13 states have (on average 19.615384615384617) internal successors, (255), 13 states have internal predecessors, (255), 4 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) [2023-11-29 01:42:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:13,612 INFO L93 Difference]: Finished difference Result 237053 states and 378548 transitions. [2023-11-29 01:42:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:42:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.615384615384617) internal successors, (255), 13 states have internal predecessors, (255), 4 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) Word has length 643 [2023-11-29 01:42:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:13,833 INFO L225 Difference]: With dead ends: 237053 [2023-11-29 01:42:13,833 INFO L226 Difference]: Without dead ends: 121720 [2023-11-29 01:42:13,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1273 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:42:13,945 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 315 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:13,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1009 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:42:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121720 states. [2023-11-29 01:42:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121720 to 118622. [2023-11-29 01:42:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118622 states, 92714 states have (on average 1.5280432297171949) internal successors, (141671), 93307 states have internal predecessors, (141671), 23945 states have call successors, (23945), 1962 states have call predecessors, (23945), 1962 states have return successors, (23945), 23352 states have call predecessors, (23945), 23945 states have call successors, (23945) [2023-11-29 01:42:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118622 states to 118622 states and 189561 transitions. [2023-11-29 01:42:25,638 INFO L78 Accepts]: Start accepts. Automaton has 118622 states and 189561 transitions. Word has length 643 [2023-11-29 01:42:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:25,638 INFO L495 AbstractCegarLoop]: Abstraction has 118622 states and 189561 transitions. [2023-11-29 01:42:25,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.615384615384617) internal successors, (255), 13 states have internal predecessors, (255), 4 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) [2023-11-29 01:42:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 118622 states and 189561 transitions. [2023-11-29 01:42:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-11-29 01:42:25,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:25,655 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:25,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:42:25,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:42:25,856 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:42:25,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1934560464, now seen corresponding path program 1 times [2023-11-29 01:42:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:42:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841100584] [2023-11-29 01:42:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:42:25,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:42:25,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535417012] [2023-11-29 01:42:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:25,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:42:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:42:25,920 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:42:25,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8d5a00-720a-4d57-bc96-8f7ccb74c1a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:42:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:26,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:42:26,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 11428 proven. 372 refuted. 0 times theorem prover too weak. 7212 trivial. 0 not checked. [2023-11-29 01:42:28,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 204 proven. 375 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-11-29 01:42:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:42:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841100584] [2023-11-29 01:42:29,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:42:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535417012] [2023-11-29 01:42:29,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535417012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:42:29,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:42:29,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-11-29 01:42:29,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696853494] [2023-11-29 01:42:29,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:42:29,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:42:29,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:42:29,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:42:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:42:29,171 INFO L87 Difference]: Start difference. First operand 118622 states and 189561 transitions. Second operand has 28 states, 28 states have (on average 9.785714285714286) internal successors, (274), 28 states have internal predecessors, (274), 5 states have call successors, (171), 3 states have call predecessors, (171), 7 states have return successors, (172), 5 states have call predecessors, (172), 5 states have call successors, (172) [2023-11-29 01:45:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:59,340 INFO L93 Difference]: Finished difference Result 2316214 states and 3680995 transitions. [2023-11-29 01:45:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2023-11-29 01:45:59,340 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.785714285714286) internal successors, (274), 28 states have internal predecessors, (274), 5 states have call successors, (171), 3 states have call predecessors, (171), 7 states have return successors, (172), 5 states have call predecessors, (172), 5 states have call successors, (172) Word has length 643 [2023-11-29 01:45:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:05,033 INFO L225 Difference]: With dead ends: 2316214 [2023-11-29 01:46:05,033 INFO L226 Difference]: Without dead ends: 2198825 [2023-11-29 01:46:05,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1299 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25271 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=8697, Invalid=51083, Unknown=0, NotChecked=0, Total=59780 [2023-11-29 01:46:05,886 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 18102 mSDsluCounter, 8847 mSDsCounter, 0 mSdLazyCounter, 8424 mSolverCounterSat, 5817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18127 SdHoareTripleChecker+Valid, 9633 SdHoareTripleChecker+Invalid, 14241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5817 IncrementalHoareTripleChecker+Valid, 8424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:05,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18127 Valid, 9633 Invalid, 14241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5817 Valid, 8424 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-29 01:46:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198825 states.