./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/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 39440d444684353bf21e24f176d5fedee371419507f0ad109966d3b62ac38d18 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:59:24,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:59:24,907 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:59:24,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:59:24,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:59:24,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:59:24,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:59:24,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:59:24,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:59:24,943 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:59:24,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:59:24,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:59:24,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:59:24,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:59:24,946 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:59:24,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:59:24,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:59:24,948 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:59:24,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:59:24,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:59:24,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:59:24,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:59:24,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:59:24,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:59:24,952 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:59:24,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:59:24,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:59:24,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:59:24,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:59:24,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:59:24,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:59:24,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:59:24,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:59:24,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:59:24,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:59:24,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:59:24,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:59:24,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:59:24,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:59:24,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:59:24,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:59:24,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:59:24,958 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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39440d444684353bf21e24f176d5fedee371419507f0ad109966d3b62ac38d18 [2023-11-29 03:59:25,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:59:25,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:59:25,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:59:25,265 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:59:25,265 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:59:25,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i [2023-11-29 03:59:28,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:59:28,405 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:59:28,406 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i [2023-11-29 03:59:28,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/data/970b40e97/2ac94153171147af97db4975d39ccea8/FLAG4a592f220 [2023-11-29 03:59:28,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/data/970b40e97/2ac94153171147af97db4975d39ccea8 [2023-11-29 03:59:28,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:59:28,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:59:28,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:59:28,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:59:28,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:59:28,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:59:28" (1/1) ... [2023-11-29 03:59:28,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afdaab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:28, skipping insertion in model container [2023-11-29 03:59:28,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:59:28" (1/1) ... [2023-11-29 03:59:28,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:59:28,713 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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i[916,929] [2023-11-29 03:59:28,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:59:28,986 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:59:29,000 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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i[916,929] [2023-11-29 03:59:29,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:59:29,175 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:59:29,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29 WrapperNode [2023-11-29 03:59:29,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:59:29,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:59:29,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:59:29,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:59:29,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,364 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 716 [2023-11-29 03:59:29,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:59:29,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:59:29,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:59:29,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:59:29,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,526 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 03:59:29,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:59:29,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:59:29,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:59:29,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:59:29,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (1/1) ... [2023-11-29 03:59:29,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:59:29,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:29,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:59:29,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:59:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:59:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:59:29,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:59:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:59:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:59:29,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:59:29,877 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:59:29,879 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:59:31,005 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:59:31,100 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:59:31,100 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:59:31,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:59:31 BoogieIcfgContainer [2023-11-29 03:59:31,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:59:31,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:59:31,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:59:31,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:59:31,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:59:28" (1/3) ... [2023-11-29 03:59:31,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b421a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:59:31, skipping insertion in model container [2023-11-29 03:59:31,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:59:29" (2/3) ... [2023-11-29 03:59:31,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b421a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:59:31, skipping insertion in model container [2023-11-29 03:59:31,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:59:31" (3/3) ... [2023-11-29 03:59:31,112 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-75.i [2023-11-29 03:59:31,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:59:31,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:59:31,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:59:31,218 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;@2d40bf16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:59:31,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:59:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 202 states have (on average 1.5445544554455446) internal successors, (312), 203 states have internal predecessors, (312), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 03:59:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:59:31,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:31,263 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:31,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:31,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:31,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1871698035, now seen corresponding path program 1 times [2023-11-29 03:59:31,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:31,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478143900] [2023-11-29 03:59:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:31,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:31,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478143900] [2023-11-29 03:59:31,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 03:59:31,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522290672] [2023-11-29 03:59:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:31,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:31,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:31,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:31,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:59:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:32,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:59:32,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2023-11-29 03:59:32,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:32,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522290672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:32,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:32,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:59:32,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473035288] [2023-11-29 03:59:32,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:32,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:59:32,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:32,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:59:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:59:32,370 INFO L87 Difference]: Start difference. First operand has 281 states, 202 states have (on average 1.5445544554455446) internal successors, (312), 203 states have internal predecessors, (312), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 03:59:32,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:32,486 INFO L93 Difference]: Finished difference Result 559 states and 1002 transitions. [2023-11-29 03:59:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:59:32,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 516 [2023-11-29 03:59:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:32,505 INFO L225 Difference]: With dead ends: 559 [2023-11-29 03:59:32,505 INFO L226 Difference]: Without dead ends: 279 [2023-11-29 03:59:32,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 515 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 03:59:32,516 INFO L413 NwaCegarLoop]: 456 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, 456 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 03:59:32,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:59:32,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-29 03:59:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-11-29 03:59:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 201 states have (on average 1.527363184079602) internal successors, (307), 201 states have internal predecessors, (307), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 03:59:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 459 transitions. [2023-11-29 03:59:32,606 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 459 transitions. Word has length 516 [2023-11-29 03:59:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:32,607 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 459 transitions. [2023-11-29 03:59:32,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 03:59:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 459 transitions. [2023-11-29 03:59:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:59:32,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:32,625 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:32,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:59:32,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:32,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:32,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1448248231, now seen corresponding path program 1 times [2023-11-29 03:59:32,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:32,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718561909] [2023-11-29 03:59:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:32,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:32,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187007259] [2023-11-29 03:59:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:32,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:32,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:32,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:59:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:33,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:59:33,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:33,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:33,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718561909] [2023-11-29 03:59:33,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187007259] [2023-11-29 03:59:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187007259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:33,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:33,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:59:33,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195579634] [2023-11-29 03:59:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:33,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:59:33,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:33,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:59:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:59:33,587 INFO L87 Difference]: Start difference. First operand 279 states and 459 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:33,733 INFO L93 Difference]: Finished difference Result 736 states and 1210 transitions. [2023-11-29 03:59:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:59:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 516 [2023-11-29 03:59:33,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:33,742 INFO L225 Difference]: With dead ends: 736 [2023-11-29 03:59:33,742 INFO L226 Difference]: Without dead ends: 458 [2023-11-29 03:59:33,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 514 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 03:59:33,746 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 288 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:33,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 882 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:59:33,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-11-29 03:59:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 455. [2023-11-29 03:59:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 343 states have (on average 1.5393586005830904) internal successors, (528), 344 states have internal predecessors, (528), 109 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-29 03:59:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 746 transitions. [2023-11-29 03:59:33,810 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 746 transitions. Word has length 516 [2023-11-29 03:59:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:33,813 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 746 transitions. [2023-11-29 03:59:33,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 746 transitions. [2023-11-29 03:59:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:59:33,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:33,828 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:33,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:59:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:34,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:34,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash 82178281, now seen corresponding path program 1 times [2023-11-29 03:59:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:34,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082163318] [2023-11-29 03:59:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:34,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:34,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585801341] [2023-11-29 03:59:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:34,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:34,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:34,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:59:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:34,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:59:34,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:34,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082163318] [2023-11-29 03:59:34,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:34,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585801341] [2023-11-29 03:59:34,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585801341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:34,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:34,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:59:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611961852] [2023-11-29 03:59:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:59:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:59:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:59:34,652 INFO L87 Difference]: Start difference. First operand 455 states and 746 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:34,803 INFO L93 Difference]: Finished difference Result 1349 states and 2213 transitions. [2023-11-29 03:59:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:59:34,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 516 [2023-11-29 03:59:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:34,817 INFO L225 Difference]: With dead ends: 1349 [2023-11-29 03:59:34,817 INFO L226 Difference]: Without dead ends: 895 [2023-11-29 03:59:34,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 514 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 03:59:34,820 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 442 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:34,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1150 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:59:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2023-11-29 03:59:34,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 461. [2023-11-29 03:59:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 349 states have (on average 1.5358166189111748) internal successors, (536), 350 states have internal predecessors, (536), 109 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-29 03:59:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 754 transitions. [2023-11-29 03:59:34,912 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 754 transitions. Word has length 516 [2023-11-29 03:59:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:34,914 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 754 transitions. [2023-11-29 03:59:34,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 754 transitions. [2023-11-29 03:59:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:59:34,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:34,921 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:34,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:59:35,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:35,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:35,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 284002215, now seen corresponding path program 1 times [2023-11-29 03:59:35,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:35,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122185044] [2023-11-29 03:59:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:35,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:35,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855830728] [2023-11-29 03:59:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:35,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:35,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:35,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:35,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:59:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:35,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:59:35,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:35,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:35,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:35,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122185044] [2023-11-29 03:59:35,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:35,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855830728] [2023-11-29 03:59:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855830728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:35,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:59:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877193019] [2023-11-29 03:59:35,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:59:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:59:35,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:59:35,826 INFO L87 Difference]: Start difference. First operand 461 states and 754 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:35,959 INFO L93 Difference]: Finished difference Result 1381 states and 2260 transitions. [2023-11-29 03:59:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:59:35,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 516 [2023-11-29 03:59:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:35,970 INFO L225 Difference]: With dead ends: 1381 [2023-11-29 03:59:35,970 INFO L226 Difference]: Without dead ends: 921 [2023-11-29 03:59:35,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 514 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 03:59:35,973 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 440 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:35,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1168 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:59:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-11-29 03:59:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 919. [2023-11-29 03:59:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 696 states have (on average 1.528735632183908) internal successors, (1064), 698 states have internal predecessors, (1064), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 03:59:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1500 transitions. [2023-11-29 03:59:36,096 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1500 transitions. Word has length 516 [2023-11-29 03:59:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:36,098 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1500 transitions. [2023-11-29 03:59:36,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1500 transitions. [2023-11-29 03:59:36,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:59:36,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:36,105 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:36,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:59:36,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:36,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:36,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:36,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1177488553, now seen corresponding path program 1 times [2023-11-29 03:59:36,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:36,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351559666] [2023-11-29 03:59:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:36,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:36,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:36,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260309854] [2023-11-29 03:59:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:36,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:36,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:36,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:36,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:59:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:36,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:59:36,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:36,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:36,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:36,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351559666] [2023-11-29 03:59:36,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:36,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260309854] [2023-11-29 03:59:36,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260309854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:36,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:36,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:59:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511355105] [2023-11-29 03:59:36,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:36,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:59:36,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:36,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:59:36,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:59:36,967 INFO L87 Difference]: Start difference. First operand 919 states and 1500 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:37,139 INFO L93 Difference]: Finished difference Result 2739 states and 4468 transitions. [2023-11-29 03:59:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:59:37,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 516 [2023-11-29 03:59:37,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:37,156 INFO L225 Difference]: With dead ends: 2739 [2023-11-29 03:59:37,157 INFO L226 Difference]: Without dead ends: 1821 [2023-11-29 03:59:37,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 514 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 03:59:37,161 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 405 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:37,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 887 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:59:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-11-29 03:59:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1113. [2023-11-29 03:59:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 890 states have (on average 1.5370786516853931) internal successors, (1368), 892 states have internal predecessors, (1368), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 03:59:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1804 transitions. [2023-11-29 03:59:37,402 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1804 transitions. Word has length 516 [2023-11-29 03:59:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:37,404 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1804 transitions. [2023-11-29 03:59:37,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1804 transitions. [2023-11-29 03:59:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:59:37,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:37,411 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:37,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:59:37,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:37,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:37,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:37,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2038835553, now seen corresponding path program 1 times [2023-11-29 03:59:37,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:37,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922194685] [2023-11-29 03:59:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:37,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:37,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:37,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487164278] [2023-11-29 03:59:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:37,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:37,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:37,708 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:37,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:59:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:38,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:59:38,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:38,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:38,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:38,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922194685] [2023-11-29 03:59:38,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:38,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487164278] [2023-11-29 03:59:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487164278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:38,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:38,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:59:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846048489] [2023-11-29 03:59:38,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:38,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:59:38,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:38,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:59:38,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:59:38,243 INFO L87 Difference]: Start difference. First operand 1113 states and 1804 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:38,499 INFO L93 Difference]: Finished difference Result 3131 states and 5120 transitions. [2023-11-29 03:59:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:59:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 516 [2023-11-29 03:59:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:38,516 INFO L225 Difference]: With dead ends: 3131 [2023-11-29 03:59:38,516 INFO L226 Difference]: Without dead ends: 2019 [2023-11-29 03:59:38,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:59:38,520 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 570 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:38,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1548 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:59:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2023-11-29 03:59:38,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1113. [2023-11-29 03:59:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 890 states have (on average 1.5325842696629213) internal successors, (1364), 892 states have internal predecessors, (1364), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 03:59:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1800 transitions. [2023-11-29 03:59:38,705 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1800 transitions. Word has length 516 [2023-11-29 03:59:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:38,706 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1800 transitions. [2023-11-29 03:59:38,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:38,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1800 transitions. [2023-11-29 03:59:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:59:38,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:38,713 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:38,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:59:38,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:38,914 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:38,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash 119650475, now seen corresponding path program 1 times [2023-11-29 03:59:38,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:38,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098369404] [2023-11-29 03:59:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:38,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:38,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133647116] [2023-11-29 03:59:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:38,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:38,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:38,986 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:38,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:59:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:39,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:59:39,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:39,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098369404] [2023-11-29 03:59:39,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133647116] [2023-11-29 03:59:39,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133647116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:39,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:39,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:59:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346672392] [2023-11-29 03:59:39,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:39,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:59:39,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:39,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:59:39,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:59:39,479 INFO L87 Difference]: Start difference. First operand 1113 states and 1800 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:39,694 INFO L93 Difference]: Finished difference Result 2933 states and 4760 transitions. [2023-11-29 03:59:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:59:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 516 [2023-11-29 03:59:39,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:39,710 INFO L225 Difference]: With dead ends: 2933 [2023-11-29 03:59:39,711 INFO L226 Difference]: Without dead ends: 1821 [2023-11-29 03:59:39,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 514 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 03:59:39,716 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 389 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:39,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1246 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:59:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-11-29 03:59:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1311. [2023-11-29 03:59:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1088 states have (on average 1.5661764705882353) internal successors, (1704), 1090 states have internal predecessors, (1704), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 03:59:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 2140 transitions. [2023-11-29 03:59:39,879 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 2140 transitions. Word has length 516 [2023-11-29 03:59:39,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:39,880 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 2140 transitions. [2023-11-29 03:59:39,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 2140 transitions. [2023-11-29 03:59:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 03:59:39,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:39,887 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:39,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:59:40,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:40,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:40,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1772496261, now seen corresponding path program 1 times [2023-11-29 03:59:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:40,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886120096] [2023-11-29 03:59:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:40,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:40,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:40,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047764277] [2023-11-29 03:59:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:40,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:40,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:40,172 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:40,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:59:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:40,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:59:40,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:40,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:40,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886120096] [2023-11-29 03:59:40,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047764277] [2023-11-29 03:59:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047764277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:40,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:40,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:59:40,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061801967] [2023-11-29 03:59:40,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:40,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:59:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:40,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:59:40,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:59:40,767 INFO L87 Difference]: Start difference. First operand 1311 states and 2140 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:42,428 INFO L93 Difference]: Finished difference Result 3998 states and 6512 transitions. [2023-11-29 03:59:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:59:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 517 [2023-11-29 03:59:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:42,451 INFO L225 Difference]: With dead ends: 3998 [2023-11-29 03:59:42,452 INFO L226 Difference]: Without dead ends: 2688 [2023-11-29 03:59:42,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:59:42,457 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 2129 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2129 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:42,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2129 Valid, 1353 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:59:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2023-11-29 03:59:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2026. [2023-11-29 03:59:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1626 states have (on average 1.5350553505535056) internal successors, (2496), 1631 states have internal predecessors, (2496), 389 states have call successors, (389), 10 states have call predecessors, (389), 10 states have return successors, (389), 384 states have call predecessors, (389), 389 states have call successors, (389) [2023-11-29 03:59:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 3274 transitions. [2023-11-29 03:59:42,713 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 3274 transitions. Word has length 517 [2023-11-29 03:59:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:42,715 INFO L495 AbstractCegarLoop]: Abstraction has 2026 states and 3274 transitions. [2023-11-29 03:59:42,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 3274 transitions. [2023-11-29 03:59:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 03:59:42,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:42,723 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:42,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:59:42,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:42,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:42,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -98630329, now seen corresponding path program 1 times [2023-11-29 03:59:42,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940793910] [2023-11-29 03:59:42,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:42,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:42,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:42,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608960882] [2023-11-29 03:59:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:42,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:42,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:42,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:43,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:59:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:43,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:59:43,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4053 proven. 174 refuted. 0 times theorem prover too weak. 7173 trivial. 0 not checked. [2023-11-29 03:59:44,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:59:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 51 proven. 174 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 03:59:44,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:44,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940793910] [2023-11-29 03:59:44,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:44,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608960882] [2023-11-29 03:59:44,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608960882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:59:44,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:59:44,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 03:59:44,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547624561] [2023-11-29 03:59:44,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:59:44,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:59:44,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:44,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:59:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:59:44,756 INFO L87 Difference]: Start difference. First operand 2026 states and 3274 transitions. Second operand has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2023-11-29 03:59:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:45,414 INFO L93 Difference]: Finished difference Result 3993 states and 6421 transitions. [2023-11-29 03:59:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:59:45,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) Word has length 517 [2023-11-29 03:59:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:45,434 INFO L225 Difference]: With dead ends: 3993 [2023-11-29 03:59:45,435 INFO L226 Difference]: Without dead ends: 2070 [2023-11-29 03:59:45,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:59:45,441 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 440 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:45,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 964 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:59:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2023-11-29 03:59:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2054. [2023-11-29 03:59:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1647 states have (on average 1.5209471766848817) internal successors, (2505), 1652 states have internal predecessors, (2505), 389 states have call successors, (389), 17 states have call predecessors, (389), 17 states have return successors, (389), 384 states have call predecessors, (389), 389 states have call successors, (389) [2023-11-29 03:59:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3283 transitions. [2023-11-29 03:59:45,695 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3283 transitions. Word has length 517 [2023-11-29 03:59:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:45,696 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3283 transitions. [2023-11-29 03:59:45,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2023-11-29 03:59:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3283 transitions. [2023-11-29 03:59:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 03:59:45,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:45,705 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:45,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 03:59:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:45,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:45,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash -171016887, now seen corresponding path program 1 times [2023-11-29 03:59:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886773126] [2023-11-29 03:59:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:45,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:45,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785751603] [2023-11-29 03:59:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:45,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:45,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:45,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:45,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:59:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:46,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:59:46,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5535 proven. 135 refuted. 0 times theorem prover too weak. 5730 trivial. 0 not checked. [2023-11-29 03:59:46,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:59:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 90 proven. 135 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 03:59:47,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:47,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886773126] [2023-11-29 03:59:47,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:47,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785751603] [2023-11-29 03:59:47,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785751603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:59:47,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:59:47,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 03:59:47,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141886344] [2023-11-29 03:59:47,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:59:47,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:59:47,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:47,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:59:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:59:47,311 INFO L87 Difference]: Start difference. First operand 2054 states and 3283 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-29 03:59:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:47,856 INFO L93 Difference]: Finished difference Result 4057 states and 6446 transitions. [2023-11-29 03:59:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:59:47,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 517 [2023-11-29 03:59:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:47,870 INFO L225 Difference]: With dead ends: 4057 [2023-11-29 03:59:47,870 INFO L226 Difference]: Without dead ends: 2110 [2023-11-29 03:59:47,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1026 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:59:47,877 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 303 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:47,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 929 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:59:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2023-11-29 03:59:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2080. [2023-11-29 03:59:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1666 states have (on average 1.4981992797118848) internal successors, (2496), 1671 states have internal predecessors, (2496), 389 states have call successors, (389), 24 states have call predecessors, (389), 24 states have return successors, (389), 384 states have call predecessors, (389), 389 states have call successors, (389) [2023-11-29 03:59:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 3274 transitions. [2023-11-29 03:59:48,026 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 3274 transitions. Word has length 517 [2023-11-29 03:59:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:48,027 INFO L495 AbstractCegarLoop]: Abstraction has 2080 states and 3274 transitions. [2023-11-29 03:59:48,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-29 03:59:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 3274 transitions. [2023-11-29 03:59:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-11-29 03:59:48,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:48,033 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:48,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:59:48,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:59:48,233 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:48,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash 562004146, now seen corresponding path program 1 times [2023-11-29 03:59:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469727071] [2023-11-29 03:59:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:48,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:48,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:48,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785771272] [2023-11-29 03:59:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:48,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:48,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:48,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:48,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:59:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:48,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:59:48,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:49,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:49,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:49,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469727071] [2023-11-29 03:59:49,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785771272] [2023-11-29 03:59:49,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785771272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:49,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:49,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:59:49,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996343814] [2023-11-29 03:59:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:49,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:59:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:59:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:59:49,056 INFO L87 Difference]: Start difference. First operand 2080 states and 3274 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:51,002 INFO L93 Difference]: Finished difference Result 5888 states and 9245 transitions. [2023-11-29 03:59:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:59:51,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 520 [2023-11-29 03:59:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:51,025 INFO L225 Difference]: With dead ends: 5888 [2023-11-29 03:59:51,025 INFO L226 Difference]: Without dead ends: 3919 [2023-11-29 03:59:51,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:59:51,032 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 2185 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:51,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2185 Valid, 3018 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:59:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2023-11-29 03:59:51,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 1733. [2023-11-29 03:59:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1434 states have (on average 1.500697350069735) internal successors, (2152), 1437 states have internal predecessors, (2152), 280 states have call successors, (280), 18 states have call predecessors, (280), 18 states have return successors, (280), 277 states have call predecessors, (280), 280 states have call successors, (280) [2023-11-29 03:59:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2712 transitions. [2023-11-29 03:59:51,329 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2712 transitions. Word has length 520 [2023-11-29 03:59:51,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:51,330 INFO L495 AbstractCegarLoop]: Abstraction has 1733 states and 2712 transitions. [2023-11-29 03:59:51,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2712 transitions. [2023-11-29 03:59:51,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-11-29 03:59:51,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:51,339 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:51,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:59:51,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 03:59:51,540 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:51,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:51,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1690877189, now seen corresponding path program 1 times [2023-11-29 03:59:51,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:51,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642836785] [2023-11-29 03:59:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:51,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:51,594 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475590891] [2023-11-29 03:59:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:51,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:51,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:51,596 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:51,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:59:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:51,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:59:51,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 03:59:52,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:52,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:52,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642836785] [2023-11-29 03:59:52,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:52,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475590891] [2023-11-29 03:59:52,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475590891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:52,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:52,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:59:52,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555350419] [2023-11-29 03:59:52,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:52,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:59:52,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:59:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:59:52,128 INFO L87 Difference]: Start difference. First operand 1733 states and 2712 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:53,205 INFO L93 Difference]: Finished difference Result 4955 states and 7743 transitions. [2023-11-29 03:59:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:59:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 521 [2023-11-29 03:59:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:53,232 INFO L225 Difference]: With dead ends: 4955 [2023-11-29 03:59:53,232 INFO L226 Difference]: Without dead ends: 3337 [2023-11-29 03:59:53,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:59:53,238 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1178 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:53,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 2356 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:59:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2023-11-29 03:59:53,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 2821. [2023-11-29 03:59:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2357 states have (on average 1.5125159100551548) internal successors, (3565), 2364 states have internal predecessors, (3565), 433 states have call successors, (433), 30 states have call predecessors, (433), 30 states have return successors, (433), 426 states have call predecessors, (433), 433 states have call successors, (433) [2023-11-29 03:59:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4431 transitions. [2023-11-29 03:59:53,626 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4431 transitions. Word has length 521 [2023-11-29 03:59:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:53,627 INFO L495 AbstractCegarLoop]: Abstraction has 2821 states and 4431 transitions. [2023-11-29 03:59:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 03:59:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4431 transitions. [2023-11-29 03:59:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-11-29 03:59:53,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:53,637 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:53,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 03:59:53,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:59:53,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:53,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash -758722941, now seen corresponding path program 1 times [2023-11-29 03:59:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:53,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807375621] [2023-11-29 03:59:53,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:53,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974340479] [2023-11-29 03:59:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:53,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:53,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:53,907 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:53,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:59:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:54,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:59:54,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5643 proven. 129 refuted. 0 times theorem prover too weak. 5628 trivial. 0 not checked. [2023-11-29 03:59:54,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:59:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 96 proven. 129 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 03:59:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807375621] [2023-11-29 03:59:55,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974340479] [2023-11-29 03:59:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974340479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:59:55,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:59:55,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 03:59:55,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786089357] [2023-11-29 03:59:55,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:59:55,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:59:55,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:59:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:59:55,337 INFO L87 Difference]: Start difference. First operand 2821 states and 4431 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-11-29 03:59:55,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:55,922 INFO L93 Difference]: Finished difference Result 4375 states and 6830 transitions. [2023-11-29 03:59:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:59:55,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 521 [2023-11-29 03:59:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:55,933 INFO L225 Difference]: With dead ends: 4375 [2023-11-29 03:59:55,933 INFO L226 Difference]: Without dead ends: 1623 [2023-11-29 03:59:55,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 1032 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:59:55,938 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 342 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:55,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 895 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:59:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2023-11-29 03:59:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 948. [2023-11-29 03:59:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 781 states have (on average 1.4647887323943662) internal successors, (1144), 781 states have internal predecessors, (1144), 152 states have call successors, (152), 14 states have call predecessors, (152), 14 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2023-11-29 03:59:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1448 transitions. [2023-11-29 03:59:56,085 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1448 transitions. Word has length 521 [2023-11-29 03:59:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:56,086 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1448 transitions. [2023-11-29 03:59:56,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-11-29 03:59:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1448 transitions. [2023-11-29 03:59:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-11-29 03:59:56,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:56,093 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:56,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 03:59:56,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:59:56,293 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:56,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:56,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1675358471, now seen corresponding path program 1 times [2023-11-29 03:59:56,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:56,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368575553] [2023-11-29 03:59:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:56,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:59:56,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907537122] [2023-11-29 03:59:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:56,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:56,353 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:56,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:59:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:56,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:59:56,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 6326 proven. 456 refuted. 0 times theorem prover too weak. 4618 trivial. 0 not checked. [2023-11-29 03:59:58,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:59:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 201 proven. 465 refuted. 0 times theorem prover too weak. 10734 trivial. 0 not checked. [2023-11-29 03:59:59,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368575553] [2023-11-29 03:59:59,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:59:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907537122] [2023-11-29 03:59:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907537122] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:59:59,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:59:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-29 03:59:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706407516] [2023-11-29 03:59:59,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:59:59,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 03:59:59,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:59,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 03:59:59,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:59:59,279 INFO L87 Difference]: Start difference. First operand 948 states and 1448 transitions. Second operand has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 22 states have internal predecessors, (259), 7 states have call successors, (148), 4 states have call predecessors, (148), 10 states have return successors, (149), 7 states have call predecessors, (149), 7 states have call successors, (149) [2023-11-29 04:00:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:00,426 INFO L93 Difference]: Finished difference Result 1955 states and 2947 transitions. [2023-11-29 04:00:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:00:00,427 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 22 states have internal predecessors, (259), 7 states have call successors, (148), 4 states have call predecessors, (148), 10 states have return successors, (149), 7 states have call predecessors, (149), 7 states have call successors, (149) Word has length 521 [2023-11-29 04:00:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:00,433 INFO L225 Difference]: With dead ends: 1955 [2023-11-29 04:00:00,433 INFO L226 Difference]: Without dead ends: 1008 [2023-11-29 04:00:00,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:00:00,437 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 529 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:00,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1342 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:00:00,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-11-29 04:00:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 980. [2023-11-29 04:00:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 805 states have (on average 1.4434782608695653) internal successors, (1162), 805 states have internal predecessors, (1162), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2023-11-29 04:00:00,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1466 transitions. [2023-11-29 04:00:00,530 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1466 transitions. Word has length 521 [2023-11-29 04:00:00,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:00,531 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1466 transitions. [2023-11-29 04:00:00,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 22 states have internal predecessors, (259), 7 states have call successors, (148), 4 states have call predecessors, (148), 10 states have return successors, (149), 7 states have call predecessors, (149), 7 states have call successors, (149) [2023-11-29 04:00:00,531 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1466 transitions. [2023-11-29 04:00:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-11-29 04:00:00,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:00,535 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:00,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:00:00,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:00:00,735 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:00:00,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:00,736 INFO L85 PathProgramCache]: Analyzing trace with hash -353227639, now seen corresponding path program 1 times [2023-11-29 04:00:00,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:00,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435220111] [2023-11-29 04:00:00,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:00,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:00,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:00,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776894569] [2023-11-29 04:00:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:00,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:00,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:00,791 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:00,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:00:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:01,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:00:01,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 3066 proven. 387 refuted. 0 times theorem prover too weak. 7947 trivial. 0 not checked. [2023-11-29 04:00:02,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 36 proven. 189 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:00:03,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:03,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435220111] [2023-11-29 04:00:03,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:03,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776894569] [2023-11-29 04:00:03,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776894569] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:03,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:03,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-11-29 04:00:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887496224] [2023-11-29 04:00:03,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:03,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:00:03,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:03,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:00:03,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:00:03,258 INFO L87 Difference]: Start difference. First operand 980 states and 1466 transitions. Second operand has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 4 states have call successors, (143), 3 states have call predecessors, (143), 6 states have return successors, (144), 4 states have call predecessors, (144), 4 states have call successors, (144) [2023-11-29 04:00:05,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:05,604 INFO L93 Difference]: Finished difference Result 4252 states and 6501 transitions. [2023-11-29 04:00:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:00:05,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 4 states have call successors, (143), 3 states have call predecessors, (143), 6 states have return successors, (144), 4 states have call predecessors, (144), 4 states have call successors, (144) Word has length 521 [2023-11-29 04:00:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:05,613 INFO L225 Difference]: With dead ends: 4252 [2023-11-29 04:00:05,613 INFO L226 Difference]: Without dead ends: 3273 [2023-11-29 04:00:05,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:00:05,616 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 1365 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:05,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 4647 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:00:05,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2023-11-29 04:00:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 1004. [2023-11-29 04:00:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 823 states have (on average 1.4289185905224788) internal successors, (1176), 823 states have internal predecessors, (1176), 152 states have call successors, (152), 28 states have call predecessors, (152), 28 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2023-11-29 04:00:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1480 transitions. [2023-11-29 04:00:05,796 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1480 transitions. Word has length 521 [2023-11-29 04:00:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:05,797 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1480 transitions. [2023-11-29 04:00:05,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 4 states have call successors, (143), 3 states have call predecessors, (143), 6 states have return successors, (144), 4 states have call predecessors, (144), 4 states have call successors, (144) [2023-11-29 04:00:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1480 transitions. [2023-11-29 04:00:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-11-29 04:00:05,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:05,801 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:05,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:00:06,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:00:06,002 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:00:06,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1495730105, now seen corresponding path program 1 times [2023-11-29 04:00:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526665433] [2023-11-29 04:00:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:06,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:06,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941728875] [2023-11-29 04:00:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:06,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:06,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:06,083 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:06,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:00:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:06,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:00:06,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 7588 proven. 69 refuted. 0 times theorem prover too weak. 3743 trivial. 0 not checked. [2023-11-29 04:00:08,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 156 proven. 69 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:00:09,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:09,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526665433] [2023-11-29 04:00:09,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:09,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941728875] [2023-11-29 04:00:09,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941728875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:09,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:09,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2023-11-29 04:00:09,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893511325] [2023-11-29 04:00:09,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:09,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:00:09,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:09,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:00:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:00:09,560 INFO L87 Difference]: Start difference. First operand 1004 states and 1480 transitions. Second operand has 18 states, 18 states have (on average 15.944444444444445) internal successors, (287), 18 states have internal predecessors, (287), 6 states have call successors, (152), 4 states have call predecessors, (152), 6 states have return successors, (152), 6 states have call predecessors, (152), 6 states have call successors, (152) [2023-11-29 04:00:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:12,006 INFO L93 Difference]: Finished difference Result 3532 states and 5247 transitions. [2023-11-29 04:00:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 04:00:12,007 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.944444444444445) internal successors, (287), 18 states have internal predecessors, (287), 6 states have call successors, (152), 4 states have call predecessors, (152), 6 states have return successors, (152), 6 states have call predecessors, (152), 6 states have call successors, (152) Word has length 521 [2023-11-29 04:00:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:12,013 INFO L225 Difference]: With dead ends: 3532 [2023-11-29 04:00:12,013 INFO L226 Difference]: Without dead ends: 2529 [2023-11-29 04:00:12,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 04:00:12,016 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2342 mSDsluCounter, 3593 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:12,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 3940 Invalid, 2603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:00:12,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2023-11-29 04:00:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 1195. [2023-11-29 04:00:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 922 states have (on average 1.3872017353579176) internal successors, (1279), 922 states have internal predecessors, (1279), 228 states have call successors, (228), 44 states have call predecessors, (228), 44 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-29 04:00:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1735 transitions. [2023-11-29 04:00:12,201 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1735 transitions. Word has length 521 [2023-11-29 04:00:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:12,202 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1735 transitions. [2023-11-29 04:00:12,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.944444444444445) internal successors, (287), 18 states have internal predecessors, (287), 6 states have call successors, (152), 4 states have call predecessors, (152), 6 states have return successors, (152), 6 states have call predecessors, (152), 6 states have call successors, (152) [2023-11-29 04:00:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1735 transitions. [2023-11-29 04:00:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-11-29 04:00:12,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:12,206 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:12,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 04:00:12,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:00:12,407 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:00:12,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash -570100452, now seen corresponding path program 1 times [2023-11-29 04:00:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:12,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63674050] [2023-11-29 04:00:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:12,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:12,473 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:12,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525206400] [2023-11-29 04:00:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:12,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:12,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:12,475 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:12,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:00:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:13,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:00:13,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 75 proven. 225 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-11-29 04:00:14,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:00:15,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63674050] [2023-11-29 04:00:15,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525206400] [2023-11-29 04:00:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525206400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:15,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:15,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 04:00:15,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304843926] [2023-11-29 04:00:15,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:15,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:00:15,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:00:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:00:15,031 INFO L87 Difference]: Start difference. First operand 1195 states and 1735 transitions. Second operand has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 4 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 2 states have call predecessors, (152), 4 states have call successors, (152) [2023-11-29 04:00:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:15,982 INFO L93 Difference]: Finished difference Result 3078 states and 4581 transitions. [2023-11-29 04:00:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:00:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 4 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 2 states have call predecessors, (152), 4 states have call successors, (152) Word has length 522 [2023-11-29 04:00:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:15,988 INFO L225 Difference]: With dead ends: 3078 [2023-11-29 04:00:15,989 INFO L226 Difference]: Without dead ends: 2075 [2023-11-29 04:00:15,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1032 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:00:15,991 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1035 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:15,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1457 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:00:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-11-29 04:00:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1359. [2023-11-29 04:00:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1083 states have (on average 1.3758079409048938) internal successors, (1490), 1083 states have internal predecessors, (1490), 228 states have call successors, (228), 47 states have call predecessors, (228), 47 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-29 04:00:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1946 transitions. [2023-11-29 04:00:16,205 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1946 transitions. Word has length 522 [2023-11-29 04:00:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:16,206 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 1946 transitions. [2023-11-29 04:00:16,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 4 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 2 states have call predecessors, (152), 4 states have call successors, (152) [2023-11-29 04:00:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1946 transitions. [2023-11-29 04:00:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-11-29 04:00:16,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:16,210 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:16,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 04:00:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:00:16,411 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:00:16,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -146453730, now seen corresponding path program 1 times [2023-11-29 04:00:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19374625] [2023-11-29 04:00:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:16,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:16,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41707623] [2023-11-29 04:00:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:16,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:16,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:16,472 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:16,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:00:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:17,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:00:17,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4369 proven. 168 refuted. 0 times theorem prover too weak. 6863 trivial. 0 not checked. [2023-11-29 04:00:19,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 57 proven. 168 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:00:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19374625] [2023-11-29 04:00:20,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41707623] [2023-11-29 04:00:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41707623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:20,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:20,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 04:00:20,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445900467] [2023-11-29 04:00:20,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:20,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:00:20,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:00:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:00:20,200 INFO L87 Difference]: Start difference. First operand 1359 states and 1946 transitions. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 4 states have call successors, (152), 3 states have call predecessors, (152), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) [2023-11-29 04:00:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:23,883 INFO L93 Difference]: Finished difference Result 6565 states and 9608 transitions. [2023-11-29 04:00:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 04:00:23,884 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 4 states have call successors, (152), 3 states have call predecessors, (152), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) Word has length 522 [2023-11-29 04:00:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:23,898 INFO L225 Difference]: With dead ends: 6565 [2023-11-29 04:00:23,898 INFO L226 Difference]: Without dead ends: 5402 [2023-11-29 04:00:23,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1036 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=926, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 04:00:23,903 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 2641 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:23,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 3622 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 04:00:23,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2023-11-29 04:00:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 2768. [2023-11-29 04:00:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2307 states have (on average 1.4070221066319897) internal successors, (3246), 2307 states have internal predecessors, (3246), 380 states have call successors, (380), 80 states have call predecessors, (380), 80 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2023-11-29 04:00:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4006 transitions. [2023-11-29 04:00:24,302 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4006 transitions. Word has length 522 [2023-11-29 04:00:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:24,302 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4006 transitions. [2023-11-29 04:00:24,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 4 states have call successors, (152), 3 states have call predecessors, (152), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) [2023-11-29 04:00:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4006 transitions. [2023-11-29 04:00:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-11-29 04:00:24,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:24,307 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:24,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 04:00:24,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:00:24,508 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:00:24,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 128305884, now seen corresponding path program 1 times [2023-11-29 04:00:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:24,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126121070] [2023-11-29 04:00:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:24,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:24,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:24,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207807621] [2023-11-29 04:00:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:24,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:24,575 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:24,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:00:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:25,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 04:00:25,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5640 proven. 1033 refuted. 0 times theorem prover too weak. 4727 trivial. 0 not checked. [2023-11-29 04:00:29,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:01:11,605 WARN L293 SmtUtils]: Spent 9.03s on a formula simplification. DAG size of input: 90 DAG size of output: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:03:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 243 proven. 639 refuted. 0 times theorem prover too weak. 10518 trivial. 0 not checked. [2023-11-29 04:03:07,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:03:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126121070] [2023-11-29 04:03:07,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:03:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207807621] [2023-11-29 04:03:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207807621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:03:07,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:03:07,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-11-29 04:03:07,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592223635] [2023-11-29 04:03:07,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:03:07,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 04:03:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:03:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 04:03:07,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1099, Unknown=4, NotChecked=0, Total=1406 [2023-11-29 04:03:07,160 INFO L87 Difference]: Start difference. First operand 2768 states and 4006 transitions. Second operand has 38 states, 36 states have (on average 8.444444444444445) internal successors, (304), 34 states have internal predecessors, (304), 11 states have call successors, (152), 7 states have call predecessors, (152), 14 states have return successors, (152), 11 states have call predecessors, (152), 11 states have call successors, (152) [2023-11-29 04:03:11,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:03:17,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:03:25,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:03:31,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:03:36,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:03:59,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:01,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:04,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:06,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:10,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:15,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:19,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:26,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:29,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:33,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:35,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:41,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:45,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:49,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:04:52,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:01,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:05:16,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:05:20,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:05:25,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:05:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:26,335 INFO L93 Difference]: Finished difference Result 17489 states and 25662 transitions. [2023-11-29 04:05:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-11-29 04:05:26,336 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 8.444444444444445) internal successors, (304), 34 states have internal predecessors, (304), 11 states have call successors, (152), 7 states have call predecessors, (152), 14 states have return successors, (152), 11 states have call predecessors, (152), 11 states have call successors, (152) Word has length 522 [2023-11-29 04:05:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:26,357 INFO L225 Difference]: With dead ends: 17489 [2023-11-29 04:05:26,357 INFO L226 Difference]: Without dead ends: 14921 [2023-11-29 04:05:26,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1206 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10742 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=6718, Invalid=23033, Unknown=5, NotChecked=0, Total=29756 [2023-11-29 04:05:26,371 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 7560 mSDsluCounter, 9284 mSDsCounter, 0 mSdLazyCounter, 8586 mSolverCounterSat, 1580 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7602 SdHoareTripleChecker+Valid, 9810 SdHoareTripleChecker+Invalid, 10172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1580 IncrementalHoareTripleChecker+Valid, 8586 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:26,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7602 Valid, 9810 Invalid, 10172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1580 Valid, 8586 Invalid, 6 Unknown, 0 Unchecked, 111.9s Time] [2023-11-29 04:05:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14921 states. [2023-11-29 04:05:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14921 to 9817. [2023-11-29 04:05:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9817 states, 8473 states have (on average 1.4017467248908297) internal successors, (11877), 8481 states have internal predecessors, (11877), 1052 states have call successors, (1052), 291 states have call predecessors, (1052), 291 states have return successors, (1052), 1044 states have call predecessors, (1052), 1052 states have call successors, (1052) [2023-11-29 04:05:27,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9817 states to 9817 states and 13981 transitions. [2023-11-29 04:05:27,669 INFO L78 Accepts]: Start accepts. Automaton has 9817 states and 13981 transitions. Word has length 522 [2023-11-29 04:05:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:27,669 INFO L495 AbstractCegarLoop]: Abstraction has 9817 states and 13981 transitions. [2023-11-29 04:05:27,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 8.444444444444445) internal successors, (304), 34 states have internal predecessors, (304), 11 states have call successors, (152), 7 states have call predecessors, (152), 14 states have return successors, (152), 11 states have call predecessors, (152), 11 states have call successors, (152) [2023-11-29 04:05:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 9817 states and 13981 transitions. [2023-11-29 04:05:27,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-11-29 04:05:27,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:27,677 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:27,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 04:05:27,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:05:27,877 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:27,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:27,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1677132450, now seen corresponding path program 1 times [2023-11-29 04:05:27,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:27,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992847620] [2023-11-29 04:05:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:27,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:27,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:05:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692289491] [2023-11-29 04:05:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:27,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:05:27,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:05:27,935 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:05:27,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:05:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:32,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:05:32,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:05:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 3254 proven. 396 refuted. 0 times theorem prover too weak. 7750 trivial. 0 not checked. [2023-11-29 04:05:37,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:05:42,414 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (* 65535 c_~var_1_93~0))) (let ((.cse5 (mod .cse4 65536))) (let ((.cse11 (+ 255 .cse5)) (.cse8 (+ .cse5 c_~var_1_12~0)) (.cse1 (mod c_~var_1_10~0 256))) (and (or (< c_~var_1_12~0 1) (let ((.cse0 (mod (+ c_~var_1_12~0 .cse4) 65536))) (and (or (< 4 (+ c_~var_1_107~0 (div .cse0 .cse1))) (< 32767 .cse0)) (let ((.cse3 (+ .cse0 (- 65536)))) (let ((.cse2 (+ c_~var_1_107~0 (div .cse3 .cse1)))) (or (and (= 4 .cse2) (not (= (mod .cse3 .cse1) 0))) (< 4 .cse2) (< .cse0 32768))))))) (forall ((v_~var_1_97~0_20 Int)) (or (forall ((v_y_139 Int)) (let ((.cse6 (* 65536 v_y_139))) (let ((.cse7 (+ .cse6 65536 v_~var_1_97~0_20))) (or (< .cse5 (+ .cse6 65281 v_~var_1_97~0_20)) (< .cse7 .cse5) (< .cse7 .cse8))))) (< 32767 v_~var_1_97~0_20) (< v_~var_1_97~0_20 0) (< 4 (+ c_~var_1_107~0 (div v_~var_1_97~0_20 .cse1))) (< .cse5 (+ v_~var_1_97~0_20 1)))) (forall ((v_y_140 Int) (v_~var_1_97~0_20 Int)) (let ((.cse10 (* 65536 v_y_140))) (let ((.cse9 (+ 65536 .cse10 v_~var_1_97~0_20))) (or (< .cse9 .cse5) (< .cse5 (+ 65281 .cse10 v_~var_1_97~0_20)) (< .cse9 .cse8) (< 0 (+ v_~var_1_97~0_20 1)) (< 4 (+ c_~var_1_107~0 (div v_~var_1_97~0_20 .cse1))) (not (= (mod v_~var_1_97~0_20 .cse1) 0)) (< (+ v_~var_1_97~0_20 32768) 0))))) (forall ((v_~var_1_97~0_20 Int) (v_y_139 Int)) (let ((.cse12 (+ (* 65536 v_y_139) v_~var_1_97~0_20))) (or (< .cse11 .cse12) (< .cse12 .cse5) (< 32767 v_~var_1_97~0_20) (< v_~var_1_97~0_20 .cse5) (< 4 (+ c_~var_1_107~0 (div v_~var_1_97~0_20 .cse1))) (< .cse12 .cse8)))) (forall ((v_~var_1_97~0_20 Int) (v_y_139 Int)) (let ((.cse14 (+ c_~var_1_107~0 (div v_~var_1_97~0_20 .cse1))) (.cse13 (+ (* 65536 v_y_139) v_~var_1_97~0_20))) (or (< .cse11 .cse13) (< .cse13 .cse5) (< 32767 v_~var_1_97~0_20) (< v_~var_1_97~0_20 .cse5) (< 4 .cse14) (= .cse14 4) (< .cse13 .cse8)))) (forall ((v_~var_1_97~0_20 Int) (v_y_139 Int)) (let ((.cse15 (+ (* 65536 v_y_139) v_~var_1_97~0_20))) (or (< .cse11 .cse15) (< .cse15 .cse5) (< 32767 v_~var_1_97~0_20) (< v_~var_1_97~0_20 .cse5) (< 4 (+ c_~var_1_107~0 (div v_~var_1_97~0_20 .cse1))) (< .cse15 .cse8) (not (= (mod v_~var_1_97~0_20 .cse1) 0))))) (forall ((v_y_140 Int) (v_~var_1_97~0_20 Int)) (let ((.cse17 (* 65536 v_y_140))) (let ((.cse16 (+ 65536 .cse17 v_~var_1_97~0_20)) (.cse18 (+ c_~var_1_107~0 (div v_~var_1_97~0_20 .cse1)))) (or (< .cse16 .cse5) (< .cse5 (+ 65281 .cse17 v_~var_1_97~0_20)) (< .cse16 .cse8) (< 0 (+ v_~var_1_97~0_20 1)) (< 4 .cse18) (= .cse18 4) (< (+ v_~var_1_97~0_20 32768) 0))))))))) is different from false [2023-11-29 04:06:27,729 WARN L293 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:08:55,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:08:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992847620] [2023-11-29 04:08:55,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:08:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692289491] [2023-11-29 04:08:55,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692289491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:08:55,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:08:55,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-29 04:08:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011693404] [2023-11-29 04:08:55,231 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:08:55,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:08:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:08:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:08:55,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=251, Unknown=5, NotChecked=34, Total=380 [2023-11-29 04:08:55,233 INFO L87 Difference]: Start difference. First operand 9817 states and 13981 transitions. Second operand has 17 states, 17 states have (on average 9.588235294117647) internal successors, (163), 14 states have internal predecessors, (163), 5 states have call successors, (76), 5 states have call predecessors, (76), 7 states have return successors, (76), 5 states have call predecessors, (76), 5 states have call successors, (76) [2023-11-29 04:09:13,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:09:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:09:16,301 INFO L93 Difference]: Finished difference Result 21694 states and 30597 transitions. [2023-11-29 04:09:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:09:16,302 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.588235294117647) internal successors, (163), 14 states have internal predecessors, (163), 5 states have call successors, (76), 5 states have call predecessors, (76), 7 states have return successors, (76), 5 states have call predecessors, (76), 5 states have call successors, (76) Word has length 522 [2023-11-29 04:09:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:09:16,319 INFO L225 Difference]: With dead ends: 21694 [2023-11-29 04:09:16,319 INFO L226 Difference]: Without dead ends: 12089 [2023-11-29 04:09:16,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=296, Invalid=694, Unknown=6, NotChecked=60, Total=1056 [2023-11-29 04:09:16,333 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 614 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:09:16,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 2462 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1558 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 04:09:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12089 states. [2023-11-29 04:09:18,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12089 to 10089. [2023-11-29 04:09:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10089 states, 8704 states have (on average 1.3952205882352942) internal successors, (12144), 8712 states have internal predecessors, (12144), 1052 states have call successors, (1052), 332 states have call predecessors, (1052), 332 states have return successors, (1052), 1044 states have call predecessors, (1052), 1052 states have call successors, (1052) [2023-11-29 04:09:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 14248 transitions. [2023-11-29 04:09:18,076 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 14248 transitions. Word has length 522 [2023-11-29 04:09:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:09:18,077 INFO L495 AbstractCegarLoop]: Abstraction has 10089 states and 14248 transitions. [2023-11-29 04:09:18,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.588235294117647) internal successors, (163), 14 states have internal predecessors, (163), 5 states have call successors, (76), 5 states have call predecessors, (76), 7 states have return successors, (76), 5 states have call predecessors, (76), 5 states have call successors, (76) [2023-11-29 04:09:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 14248 transitions. [2023-11-29 04:09:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-11-29 04:09:18,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:09:18,084 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:09:18,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 04:09:18,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:09:18,285 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:09:18,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash 928891104, now seen corresponding path program 1 times [2023-11-29 04:09:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:09:18,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483271213] [2023-11-29 04:09:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:18,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:09:18,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:09:18,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713164556] [2023-11-29 04:09:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:18,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:09:18,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:09:18,346 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:09:18,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:09:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:19,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:09:19,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 2114 proven. 615 refuted. 0 times theorem prover too weak. 8671 trivial. 0 not checked. [2023-11-29 04:09:26,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:09:31,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-11-29 04:09:31,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:09:31,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483271213] [2023-11-29 04:09:31,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:09:31,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713164556] [2023-11-29 04:09:31,077 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 04:09:31,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 04:09:31,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 04:09:31,278 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2023-11-29 04:09:31,282 INFO L158 Benchmark]: Toolchain (without parser) took 602835.22ms. Allocated memory was 169.9MB in the beginning and 736.1MB in the end (delta: 566.2MB). Free memory was 138.5MB in the beginning and 227.0MB in the end (delta: -88.5MB). Peak memory consumption was 478.9MB. Max. memory is 16.1GB. [2023-11-29 04:09:31,282 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:09:31,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 727.29ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 97.5MB in the end (delta: 40.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-29 04:09:31,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 187.86ms. Allocated memory is still 169.9MB. Free memory was 97.5MB in the beginning and 73.6MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 04:09:31,283 INFO L158 Benchmark]: Boogie Preprocessor took 258.88ms. Allocated memory is still 169.9MB. Free memory was 73.6MB in the beginning and 63.4MB in the end (delta: 10.2MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-29 04:09:31,284 INFO L158 Benchmark]: RCFGBuilder took 1476.13ms. Allocated memory was 169.9MB in the beginning and 243.3MB in the end (delta: 73.4MB). Free memory was 63.4MB in the beginning and 145.9MB in the end (delta: -82.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 04:09:31,284 INFO L158 Benchmark]: TraceAbstraction took 600176.91ms. Allocated memory was 243.3MB in the beginning and 736.1MB in the end (delta: 492.8MB). Free memory was 145.9MB in the beginning and 227.0MB in the end (delta: -81.1MB). Peak memory consumption was 411.0MB. Max. memory is 16.1GB. [2023-11-29 04:09:31,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 727.29ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 97.5MB in the end (delta: 40.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 187.86ms. Allocated memory is still 169.9MB. Free memory was 97.5MB in the beginning and 73.6MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 258.88ms. Allocated memory is still 169.9MB. Free memory was 73.6MB in the beginning and 63.4MB in the end (delta: 10.2MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1476.13ms. Allocated memory was 169.9MB in the beginning and 243.3MB in the end (delta: 73.4MB). Free memory was 63.4MB in the beginning and 145.9MB in the end (delta: -82.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 600176.91ms. Allocated memory was 243.3MB in the beginning and 736.1MB in the end (delta: 492.8MB). Free memory was 145.9MB in the beginning and 227.0MB in the end (delta: -81.1MB). Peak memory consumption was 411.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/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 39440d444684353bf21e24f176d5fedee371419507f0ad109966d3b62ac38d18 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:09:33,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:09:33,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 04:09:33,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:09:33,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:09:33,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:09:33,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:09:33,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:09:33,386 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:09:33,387 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:09:33,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:09:33,388 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:09:33,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:09:33,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:09:33,390 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:09:33,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:09:33,391 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:09:33,392 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:09:33,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:09:33,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:09:33,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:09:33,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:09:33,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:09:33,395 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:09:33,396 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:09:33,396 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:09:33,397 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:09:33,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:09:33,398 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:09:33,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:09:33,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:09:33,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:09:33,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:09:33,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:09:33,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:09:33,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:09:33,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:09:33,401 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:09:33,401 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:09:33,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:09:33,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:09:33,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:09:33,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:09:33,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:09:33,402 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:09:33,402 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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39440d444684353bf21e24f176d5fedee371419507f0ad109966d3b62ac38d18 [2023-11-29 04:09:33,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:09:33,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:09:33,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:09:33,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:09:33,754 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:09:33,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i [2023-11-29 04:09:36,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:09:36,902 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:09:36,903 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i [2023-11-29 04:09:36,921 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/data/460e6fc96/24ceca4db67e4bb29c3db8061b50cc59/FLAGe8afa32e1 [2023-11-29 04:09:36,938 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/data/460e6fc96/24ceca4db67e4bb29c3db8061b50cc59 [2023-11-29 04:09:36,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:09:36,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:09:36,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:09:36,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:09:36,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:09:36,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:09:36" (1/1) ... [2023-11-29 04:09:36,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bdbea89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:36, skipping insertion in model container [2023-11-29 04:09:36,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:09:36" (1/1) ... [2023-11-29 04:09:37,010 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:09:37,196 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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i[916,929] [2023-11-29 04:09:37,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:09:37,482 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:09:37,496 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_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-75.i[916,929] [2023-11-29 04:09:37,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:09:37,685 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:09:37,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37 WrapperNode [2023-11-29 04:09:37,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:09:37,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:09:37,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:09:37,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:09:37,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,799 INFO L138 Inliner]: procedures = 27, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 605 [2023-11-29 04:09:37,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:09:37,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:09:37,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:09:37,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:09:37,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,871 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 04:09:37,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:09:37,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:09:37,937 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:09:37,937 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:09:37,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (1/1) ... [2023-11-29 04:09:37,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:09:37,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:09:37,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:09:37,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:09:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:09:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:09:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:09:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:09:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:09:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:09:38,193 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:09:38,196 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:10:56,693 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:10:56,775 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:10:56,775 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:10:56,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:56 BoogieIcfgContainer [2023-11-29 04:10:56,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:10:56,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:10:56,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:10:56,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:10:56,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:09:36" (1/3) ... [2023-11-29 04:10:56,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5545e450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:56, skipping insertion in model container [2023-11-29 04:10:56,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:37" (2/3) ... [2023-11-29 04:10:56,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5545e450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:56, skipping insertion in model container [2023-11-29 04:10:56,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:56" (3/3) ... [2023-11-29 04:10:56,783 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-75.i [2023-11-29 04:10:56,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:10:56,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:10:56,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:10:56,866 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;@315701ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:10:56,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:10:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 165 states have (on average 1.5272727272727273) internal successors, (252), 166 states have internal predecessors, (252), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 04:10:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-11-29 04:10:56,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:56,910 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:56,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:56,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash 383213570, now seen corresponding path program 1 times [2023-11-29 04:10:56,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:10:56,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682315365] [2023-11-29 04:10:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:56,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:10:56,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:10:56,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:10:56,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 04:11:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:01,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:11:01,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5535 proven. 135 refuted. 0 times theorem prover too weak. 5730 trivial. 0 not checked. [2023-11-29 04:11:10,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 90 proven. 135 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:11:14,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:11:14,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682315365] [2023-11-29 04:11:14,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682315365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:14,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:11:14,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:11:14,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969249687] [2023-11-29 04:11:14,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:14,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:11:14,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:11:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:11:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:11:14,168 INFO L87 Difference]: Start difference. First operand has 244 states, 165 states have (on average 1.5272727272727273) internal successors, (252), 166 states have internal predecessors, (252), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-29 04:11:24,301 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 04:11:24,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 1012 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:11:24,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-11-29 04:11:24,310 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 238 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:24,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 742 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-29 04:11:24,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-29 04:11:24,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:11:24,514 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:349) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-11-29 04:11:24,518 INFO L158 Benchmark]: Toolchain (without parser) took 107574.93ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 35.7MB in the beginning and 25.5MB in the end (delta: 10.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 04:11:24,518 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 69.2MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:11:24,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 742.11ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 35.5MB in the beginning and 53.5MB in the end (delta: -18.0MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-11-29 04:11:24,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.09ms. Allocated memory is still 86.0MB. Free memory was 53.5MB in the beginning and 45.8MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 04:11:24,520 INFO L158 Benchmark]: Boogie Preprocessor took 134.52ms. Allocated memory is still 86.0MB. Free memory was 45.8MB in the beginning and 40.0MB in the end (delta: 5.7MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-11-29 04:11:24,520 INFO L158 Benchmark]: RCFGBuilder took 78839.78ms. Allocated memory is still 86.0MB. Free memory was 39.6MB in the beginning and 49.2MB in the end (delta: -9.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2023-11-29 04:11:24,521 INFO L158 Benchmark]: TraceAbstraction took 27739.05ms. Allocated memory is still 86.0MB. Free memory was 48.7MB in the beginning and 25.5MB in the end (delta: 23.2MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2023-11-29 04:11:24,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 69.2MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 742.11ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 35.5MB in the beginning and 53.5MB in the end (delta: -18.0MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.09ms. Allocated memory is still 86.0MB. Free memory was 53.5MB in the beginning and 45.8MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 134.52ms. Allocated memory is still 86.0MB. Free memory was 45.8MB in the beginning and 40.0MB in the end (delta: 5.7MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * RCFGBuilder took 78839.78ms. Allocated memory is still 86.0MB. Free memory was 39.6MB in the beginning and 49.2MB in the end (delta: -9.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 27739.05ms. Allocated memory is still 86.0MB. Free memory was 48.7MB in the beginning and 25.5MB in the end (delta: 23.2MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb6bffda-8a00-44df-92bd-0c806bc8b5a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken