./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/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_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/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_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/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 38e23cbae473b7ebe14c11b45c39448f8cd5228aeb0245c48e1ba9199773a899 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:29:57,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:29:57,918 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:29:57,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:29:57,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:29:57,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:29:57,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:29:57,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:29:57,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:29:57,954 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:29:57,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:29:57,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:29:57,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:29:57,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:29:57,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:29:57,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:29:57,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:29:57,958 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:29:57,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:29:57,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:29:57,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:29:57,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:29:57,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:29:57,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:29:57,962 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:29:57,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:29:57,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:29:57,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:29:57,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:29:57,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:29:57,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:29:57,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:57,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:29:57,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:29:57,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:29:57,966 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:29:57,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:29:57,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:29:57,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:29:57,967 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:29:57,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:29:57,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:29:57,968 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_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e23cbae473b7ebe14c11b45c39448f8cd5228aeb0245c48e1ba9199773a899 [2023-11-29 00:29:58,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:29:58,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:29:58,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:29:58,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:29:58,230 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:29:58,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i [2023-11-29 00:30:00,956 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:30:01,134 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:30:01,135 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i [2023-11-29 00:30:01,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/data/992b8b1e6/eb6397e6025444e789e0158781aaf2ff/FLAG66e2cf2fd [2023-11-29 00:30:01,157 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/data/992b8b1e6/eb6397e6025444e789e0158781aaf2ff [2023-11-29 00:30:01,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:30:01,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:30:01,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:30:01,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:30:01,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:30:01,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779985a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01, skipping insertion in model container [2023-11-29 00:30:01,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,200 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:30:01,354 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_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i[919,932] [2023-11-29 00:30:01,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:30:01,442 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:30:01,453 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_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i[919,932] [2023-11-29 00:30:01,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:30:01,509 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:30:01,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01 WrapperNode [2023-11-29 00:30:01,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:30:01,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:30:01,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:30:01,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:30:01,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,584 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-29 00:30:01,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:30:01,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:30:01,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:30:01,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:30:01,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,632 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 00:30:01,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,656 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,662 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:30:01,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:30:01,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:30:01,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:30:01,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (1/1) ... [2023-11-29 00:30:01,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:30:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:01,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:30:01,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:30:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:30:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:30:01,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:30:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:30:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:30:01,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:30:01,832 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:30:01,834 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:30:02,292 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:30:02,327 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:30:02,327 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:30:02,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:30:02 BoogieIcfgContainer [2023-11-29 00:30:02,328 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:30:02,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:30:02,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:30:02,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:30:02,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:30:01" (1/3) ... [2023-11-29 00:30:02,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af4acf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:30:02, skipping insertion in model container [2023-11-29 00:30:02,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:01" (2/3) ... [2023-11-29 00:30:02,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af4acf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:30:02, skipping insertion in model container [2023-11-29 00:30:02,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:30:02" (3/3) ... [2023-11-29 00:30:02,337 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i [2023-11-29 00:30:02,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:30:02,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:30:02,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:30:02,403 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;@12830e36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:30:02,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:30:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 53 states have internal predecessors, (76), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:30:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 00:30:02,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:02,421 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:02,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:02,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 764800632, now seen corresponding path program 1 times [2023-11-29 00:30:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662310115] [2023-11-29 00:30:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:02,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:02,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662310115] [2023-11-29 00:30:02,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:30:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481865124] [2023-11-29 00:30:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:02,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:02,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:02,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:30:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:02,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:30:02,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-11-29 00:30:02,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:30:02,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481865124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:02,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:30:02,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067193477] [2023-11-29 00:30:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:02,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:30:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:30:02,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:30:02,916 INFO L87 Difference]: Start difference. First operand has 85 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 53 states have internal predecessors, (76), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-29 00:30:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:02,958 INFO L93 Difference]: Finished difference Result 166 states and 298 transitions. [2023-11-29 00:30:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:30:02,960 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 190 [2023-11-29 00:30:02,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:02,968 INFO L225 Difference]: With dead ends: 166 [2023-11-29 00:30:02,968 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 00:30:02,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 189 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 00:30:02,975 INFO L413 NwaCegarLoop]: 125 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, 125 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 00:30:02,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 00:30:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-29 00:30:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:30:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 128 transitions. [2023-11-29 00:30:03,027 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 128 transitions. Word has length 190 [2023-11-29 00:30:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:03,028 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 128 transitions. [2023-11-29 00:30:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-29 00:30:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 128 transitions. [2023-11-29 00:30:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 00:30:03,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:03,033 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:03,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:30:03,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 00:30:03,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:03,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:03,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1405834320, now seen corresponding path program 1 times [2023-11-29 00:30:03,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:03,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577635434] [2023-11-29 00:30:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:03,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:03,317 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:03,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761886999] [2023-11-29 00:30:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:03,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:03,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:03,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:30:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:03,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:30:03,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-29 00:30:03,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:30:03,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:03,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577635434] [2023-11-29 00:30:03,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:03,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761886999] [2023-11-29 00:30:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761886999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:03,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:03,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:03,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199950875] [2023-11-29 00:30:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:03,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:30:03,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:30:03,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:03,559 INFO L87 Difference]: Start difference. First operand 82 states and 128 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-29 00:30:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:03,611 INFO L93 Difference]: Finished difference Result 193 states and 298 transitions. [2023-11-29 00:30:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:30:03,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 190 [2023-11-29 00:30:03,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:03,615 INFO L225 Difference]: With dead ends: 193 [2023-11-29 00:30:03,615 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 00:30:03,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 00:30:03,618 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 38 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:03,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 241 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 00:30:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2023-11-29 00:30:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 73 states have internal predecessors, (100), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-29 00:30:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 168 transitions. [2023-11-29 00:30:03,641 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 168 transitions. Word has length 190 [2023-11-29 00:30:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:03,643 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 168 transitions. [2023-11-29 00:30:03,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-29 00:30:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 168 transitions. [2023-11-29 00:30:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 00:30:03,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:03,648 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:03,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:30:03,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:03,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:03,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2106898898, now seen corresponding path program 1 times [2023-11-29 00:30:03,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:03,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800204440] [2023-11-29 00:30:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:03,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:03,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:03,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919361512] [2023-11-29 00:30:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:03,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:03,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:30:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:04,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:30:04,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 1212 proven. 153 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-29 00:30:05,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-29 00:30:06,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800204440] [2023-11-29 00:30:06,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919361512] [2023-11-29 00:30:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919361512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:06,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:30:06,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 24 [2023-11-29 00:30:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443241312] [2023-11-29 00:30:06,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:06,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:30:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:30:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:30:06,122 INFO L87 Difference]: Start difference. First operand 109 states and 168 transitions. Second operand has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 7 states have call successors, (51), 5 states have call predecessors, (51), 8 states have return successors, (52), 7 states have call predecessors, (52), 7 states have call successors, (52) [2023-11-29 00:30:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:08,652 INFO L93 Difference]: Finished difference Result 499 states and 715 transitions. [2023-11-29 00:30:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 00:30:08,653 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 7 states have call successors, (51), 5 states have call predecessors, (51), 8 states have return successors, (52), 7 states have call predecessors, (52), 7 states have call successors, (52) Word has length 190 [2023-11-29 00:30:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:08,659 INFO L225 Difference]: With dead ends: 499 [2023-11-29 00:30:08,659 INFO L226 Difference]: Without dead ends: 391 [2023-11-29 00:30:08,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=958, Invalid=2824, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 00:30:08,664 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 605 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:08,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 518 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 00:30:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-29 00:30:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 192. [2023-11-29 00:30:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 136 states have (on average 1.3529411764705883) internal successors, (184), 139 states have internal predecessors, (184), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-29 00:30:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 276 transitions. [2023-11-29 00:30:08,714 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 276 transitions. Word has length 190 [2023-11-29 00:30:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:08,715 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 276 transitions. [2023-11-29 00:30:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 7 states have call successors, (51), 5 states have call predecessors, (51), 8 states have return successors, (52), 7 states have call predecessors, (52), 7 states have call successors, (52) [2023-11-29 00:30:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 276 transitions. [2023-11-29 00:30:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 00:30:08,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:08,720 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:08,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:30:08,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:08,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:08,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:08,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2106958480, now seen corresponding path program 1 times [2023-11-29 00:30:08,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:08,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143024841] [2023-11-29 00:30:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:08,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:08,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:08,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329818708] [2023-11-29 00:30:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:08,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:08,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:08,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:08,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:30:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:09,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:30:09,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-29 00:30:09,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:30:09,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:09,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143024841] [2023-11-29 00:30:09,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:09,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329818708] [2023-11-29 00:30:09,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329818708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:09,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:09,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:30:09,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742509521] [2023-11-29 00:30:09,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:09,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:09,240 INFO L87 Difference]: Start difference. First operand 192 states and 276 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-29 00:30:09,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:09,442 INFO L93 Difference]: Finished difference Result 511 states and 727 transitions. [2023-11-29 00:30:09,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:30:09,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 190 [2023-11-29 00:30:09,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:09,446 INFO L225 Difference]: With dead ends: 511 [2023-11-29 00:30:09,446 INFO L226 Difference]: Without dead ends: 320 [2023-11-29 00:30:09,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:30:09,448 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 213 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:09,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 496 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:30:09,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-29 00:30:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 161. [2023-11-29 00:30:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 114 states have internal predecessors, (146), 38 states have call successors, (38), 9 states have call predecessors, (38), 9 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:30:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 222 transitions. [2023-11-29 00:30:09,479 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 222 transitions. Word has length 190 [2023-11-29 00:30:09,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:09,480 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 222 transitions. [2023-11-29 00:30:09,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-29 00:30:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 222 transitions. [2023-11-29 00:30:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 00:30:09,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:09,483 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:09,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:30:09,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 00:30:09,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:09,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1167000044, now seen corresponding path program 1 times [2023-11-29 00:30:09,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:09,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393220069] [2023-11-29 00:30:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:09,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:09,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349335651] [2023-11-29 00:30:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:09,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:09,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:09,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:09,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:30:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:09,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:30:09,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-29 00:30:10,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:30:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393220069] [2023-11-29 00:30:10,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349335651] [2023-11-29 00:30:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349335651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:10,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:10,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:30:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666569198] [2023-11-29 00:30:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:10,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:30:10,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:30:10,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:10,066 INFO L87 Difference]: Start difference. First operand 161 states and 222 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-29 00:30:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:10,133 INFO L93 Difference]: Finished difference Result 441 states and 605 transitions. [2023-11-29 00:30:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:30:10,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 190 [2023-11-29 00:30:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:10,136 INFO L225 Difference]: With dead ends: 441 [2023-11-29 00:30:10,136 INFO L226 Difference]: Without dead ends: 281 [2023-11-29 00:30:10,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 00:30:10,138 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 27 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:10,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-29 00:30:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 278. [2023-11-29 00:30:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 192 states have (on average 1.2708333333333333) internal successors, (244), 193 states have internal predecessors, (244), 68 states have call successors, (68), 17 states have call predecessors, (68), 17 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-29 00:30:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 380 transitions. [2023-11-29 00:30:10,180 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 380 transitions. Word has length 190 [2023-11-29 00:30:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:10,180 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 380 transitions. [2023-11-29 00:30:10,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-29 00:30:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 380 transitions. [2023-11-29 00:30:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 00:30:10,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:10,183 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:10,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:30:10,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:10,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:10,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:10,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1684256654, now seen corresponding path program 1 times [2023-11-29 00:30:10,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304685336] [2023-11-29 00:30:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:10,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:10,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411658881] [2023-11-29 00:30:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:10,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:10,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:10,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:10,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:30:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:10,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:30:10,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 930 proven. 204 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-11-29 00:30:11,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 93 proven. 159 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2023-11-29 00:30:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304685336] [2023-11-29 00:30:12,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411658881] [2023-11-29 00:30:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411658881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:12,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:30:12,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2023-11-29 00:30:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460563013] [2023-11-29 00:30:12,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 00:30:12,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 00:30:12,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:30:12,360 INFO L87 Difference]: Start difference. First operand 278 states and 380 transitions. Second operand has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 22 states have internal predecessors, (100), 8 states have call successors, (51), 5 states have call predecessors, (51), 10 states have return successors, (52), 8 states have call predecessors, (52), 8 states have call successors, (52) [2023-11-29 00:30:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:15,518 INFO L93 Difference]: Finished difference Result 443 states and 594 transitions. [2023-11-29 00:30:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 00:30:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 22 states have internal predecessors, (100), 8 states have call successors, (51), 5 states have call predecessors, (51), 10 states have return successors, (52), 8 states have call predecessors, (52), 8 states have call successors, (52) Word has length 190 [2023-11-29 00:30:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:15,522 INFO L225 Difference]: With dead ends: 443 [2023-11-29 00:30:15,522 INFO L226 Difference]: Without dead ends: 283 [2023-11-29 00:30:15,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1118, Invalid=3042, Unknown=0, NotChecked=0, Total=4160 [2023-11-29 00:30:15,525 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 400 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:15,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 463 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 00:30:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-29 00:30:15,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 125. [2023-11-29 00:30:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.223529411764706) internal successors, (104), 85 states have internal predecessors, (104), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 00:30:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 164 transitions. [2023-11-29 00:30:15,562 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 164 transitions. Word has length 190 [2023-11-29 00:30:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:15,563 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 164 transitions. [2023-11-29 00:30:15,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 22 states have internal predecessors, (100), 8 states have call successors, (51), 5 states have call predecessors, (51), 10 states have return successors, (52), 8 states have call predecessors, (52), 8 states have call successors, (52) [2023-11-29 00:30:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 164 transitions. [2023-11-29 00:30:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 00:30:15,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:15,565 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:15,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:30:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 00:30:15,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:15,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1864499473, now seen corresponding path program 1 times [2023-11-29 00:30:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788507404] [2023-11-29 00:30:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:15,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:15,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914432320] [2023-11-29 00:30:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:15,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:15,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:15,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:15,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:30:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:16,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:30:16,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 740 proven. 120 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2023-11-29 00:30:16,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 48 proven. 123 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2023-11-29 00:30:16,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:16,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788507404] [2023-11-29 00:30:16,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:16,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914432320] [2023-11-29 00:30:16,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914432320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:16,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:30:16,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-29 00:30:16,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665871013] [2023-11-29 00:30:16,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:16,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:30:16,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:30:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:30:16,991 INFO L87 Difference]: Start difference. First operand 125 states and 164 transitions. Second operand has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 6 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 6 states have call predecessors, (60), 6 states have call successors, (60) [2023-11-29 00:30:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:17,938 INFO L93 Difference]: Finished difference Result 455 states and 598 transitions. [2023-11-29 00:30:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:30:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 6 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 6 states have call predecessors, (60), 6 states have call successors, (60) Word has length 192 [2023-11-29 00:30:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:17,942 INFO L225 Difference]: With dead ends: 455 [2023-11-29 00:30:17,942 INFO L226 Difference]: Without dead ends: 331 [2023-11-29 00:30:17,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:30:17,944 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 284 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:17,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 409 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:30:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-29 00:30:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 246. [2023-11-29 00:30:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 167 states have (on average 1.221556886227545) internal successors, (204), 167 states have internal predecessors, (204), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 00:30:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 324 transitions. [2023-11-29 00:30:17,986 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 324 transitions. Word has length 192 [2023-11-29 00:30:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:17,987 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 324 transitions. [2023-11-29 00:30:17,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 6 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 6 states have call predecessors, (60), 6 states have call successors, (60) [2023-11-29 00:30:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 324 transitions. [2023-11-29 00:30:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 00:30:17,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:17,989 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:17,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:30:18,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:18,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:18,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1866346515, now seen corresponding path program 1 times [2023-11-29 00:30:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832053614] [2023-11-29 00:30:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:18,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007361656] [2023-11-29 00:30:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:18,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:18,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:18,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:18,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ffa02-b8b3-4b42-9dd4-266cd16c9c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:30:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:18,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 00:30:18,581 INFO L285 TraceCheckSpWp]: Computing forward predicates...