./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/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_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/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_7b547db2-815f-465e-8930-ed36a30a72d8/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 a9f11f8c88de8998bc882c7dd2efba11633c83e29912cc5a80cdbf720cc0a7ec --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:44:10,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:44:10,700 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:44:10,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:44:10,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:44:10,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:44:10,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:44:10,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:44:10,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:44:10,731 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:44:10,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:44:10,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:44:10,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:44:10,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:44:10,734 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:44:10,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:44:10,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:44:10,735 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:44:10,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:44:10,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:44:10,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:44:10,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:44:10,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:44:10,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:44:10,738 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:44:10,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:44:10,739 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:44:10,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:44:10,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:44:10,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:44:10,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:44:10,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:44:10,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:44:10,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:44:10,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:44:10,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:44:10,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:44:10,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:44:10,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:44:10,743 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:44:10,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:44:10,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:44:10,744 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_7b547db2-815f-465e-8930-ed36a30a72d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9f11f8c88de8998bc882c7dd2efba11633c83e29912cc5a80cdbf720cc0a7ec [2023-11-29 02:44:10,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:44:10,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:44:10,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:44:10,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:44:10,996 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:44:10,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i [2023-11-29 02:44:13,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:44:13,935 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:44:13,935 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i [2023-11-29 02:44:13,948 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/data/c9d7e56ef/07fd2b6faf1c4f5c9b52bf44447a8dc6/FLAG3343d969a [2023-11-29 02:44:13,963 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/data/c9d7e56ef/07fd2b6faf1c4f5c9b52bf44447a8dc6 [2023-11-29 02:44:13,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:44:13,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:44:13,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:44:13,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:44:13,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:44:13,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:44:13" (1/1) ... [2023-11-29 02:44:13,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d431e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:13, skipping insertion in model container [2023-11-29 02:44:13,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:44:13" (1/1) ... [2023-11-29 02:44:14,030 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:44:14,178 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_7b547db2-815f-465e-8930-ed36a30a72d8/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i[916,929] [2023-11-29 02:44:14,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:44:14,323 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:44:14,335 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_7b547db2-815f-465e-8930-ed36a30a72d8/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i[916,929] [2023-11-29 02:44:14,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:44:14,421 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:44:14,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14 WrapperNode [2023-11-29 02:44:14,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:44:14,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:44:14,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:44:14,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:44:14,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,528 INFO L138 Inliner]: procedures = 26, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 376 [2023-11-29 02:44:14,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:44:14,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:44:14,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:44:14,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:44:14,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,551 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,653 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 02:44:14,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:44:14,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:44:14,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:44:14,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:44:14,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (1/1) ... [2023-11-29 02:44:14,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:44:14,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:14,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:44:14,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:44:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:44:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:44:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:44:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:44:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:44:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:44:14,870 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:44:14,873 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:44:15,525 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:44:15,564 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:44:15,564 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:44:15,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:44:15 BoogieIcfgContainer [2023-11-29 02:44:15,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:44:15,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:44:15,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:44:15,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:44:15,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:44:13" (1/3) ... [2023-11-29 02:44:15,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a44cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:44:15, skipping insertion in model container [2023-11-29 02:44:15,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:44:14" (2/3) ... [2023-11-29 02:44:15,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a44cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:44:15, skipping insertion in model container [2023-11-29 02:44:15,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:44:15" (3/3) ... [2023-11-29 02:44:15,574 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-64.i [2023-11-29 02:44:15,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:44:15,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:44:15,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:44:15,651 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;@26005397, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:44:15,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:44:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 101 states have (on average 1.5841584158415842) internal successors, (160), 102 states have internal predecessors, (160), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 02:44:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-29 02:44:15,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:15,678 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:15,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:15,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2056649316, now seen corresponding path program 1 times [2023-11-29 02:44:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:15,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988863805] [2023-11-29 02:44:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:15,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:15,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988863805] [2023-11-29 02:44:15,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:44:15,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974373776] [2023-11-29 02:44:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:15,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:15,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:15,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:15,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:44:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:16,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:44:16,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2023-11-29 02:44:16,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:44:16,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974373776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:16,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:16,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:44:16,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094249726] [2023-11-29 02:44:16,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:16,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:44:16,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:16,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:44:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:44:16,317 INFO L87 Difference]: Start difference. First operand has 143 states, 101 states have (on average 1.5841584158415842) internal successors, (160), 102 states have internal predecessors, (160), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-29 02:44:16,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:16,371 INFO L93 Difference]: Finished difference Result 283 states and 513 transitions. [2023-11-29 02:44:16,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:44:16,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) Word has length 256 [2023-11-29 02:44:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:16,383 INFO L225 Difference]: With dead ends: 283 [2023-11-29 02:44:16,384 INFO L226 Difference]: Without dead ends: 141 [2023-11-29 02:44:16,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 255 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 02:44:16,392 INFO L413 NwaCegarLoop]: 230 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, 230 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 02:44:16,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 230 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:44:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-29 02:44:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-11-29 02:44:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 100 states have (on average 1.55) internal successors, (155), 100 states have internal predecessors, (155), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 02:44:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 233 transitions. [2023-11-29 02:44:16,448 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 233 transitions. Word has length 256 [2023-11-29 02:44:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:16,448 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 233 transitions. [2023-11-29 02:44:16,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-29 02:44:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 233 transitions. [2023-11-29 02:44:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-29 02:44:16,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:16,456 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:16,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:44:16,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:44:16,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:16,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash 917916062, now seen corresponding path program 1 times [2023-11-29 02:44:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:16,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396618683] [2023-11-29 02:44:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:16,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:16,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:44:16,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149773070] [2023-11-29 02:44:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:16,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:16,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:16,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:16,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:44:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:16,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:44:17,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-29 02:44:17,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:44:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:17,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396618683] [2023-11-29 02:44:17,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:17,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149773070] [2023-11-29 02:44:17,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149773070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:17,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:17,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:44:17,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106980102] [2023-11-29 02:44:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:17,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:44:17,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:17,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:44:17,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:44:17,077 INFO L87 Difference]: Start difference. First operand 141 states and 233 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:17,142 INFO L93 Difference]: Finished difference Result 354 states and 590 transitions. [2023-11-29 02:44:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:44:17,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 256 [2023-11-29 02:44:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:17,147 INFO L225 Difference]: With dead ends: 354 [2023-11-29 02:44:17,148 INFO L226 Difference]: Without dead ends: 214 [2023-11-29 02:44:17,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 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 02:44:17,151 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 114 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:17,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 458 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:44:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-29 02:44:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 159. [2023-11-29 02:44:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 118 states have (on average 1.5847457627118644) internal successors, (187), 118 states have internal predecessors, (187), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 02:44:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 265 transitions. [2023-11-29 02:44:17,170 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 265 transitions. Word has length 256 [2023-11-29 02:44:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:17,173 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 265 transitions. [2023-11-29 02:44:17,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 265 transitions. [2023-11-29 02:44:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-29 02:44:17,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:17,178 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:17,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:44:17,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 02:44:17,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:17,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash 523549276, now seen corresponding path program 1 times [2023-11-29 02:44:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:17,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914292193] [2023-11-29 02:44:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:17,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:44:17,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059639208] [2023-11-29 02:44:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:17,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:17,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:17,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:44:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:17,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:44:17,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-29 02:44:17,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:44:17,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914292193] [2023-11-29 02:44:17,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059639208] [2023-11-29 02:44:17,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059639208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:17,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:17,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:44:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931451665] [2023-11-29 02:44:17,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:44:17,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:44:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:44:17,742 INFO L87 Difference]: Start difference. First operand 159 states and 265 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:17,795 INFO L93 Difference]: Finished difference Result 372 states and 621 transitions. [2023-11-29 02:44:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:44:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 256 [2023-11-29 02:44:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:17,799 INFO L225 Difference]: With dead ends: 372 [2023-11-29 02:44:17,800 INFO L226 Difference]: Without dead ends: 214 [2023-11-29 02:44:17,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 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 02:44:17,802 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 113 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:17,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 562 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:44:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-29 02:44:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 165. [2023-11-29 02:44:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 124 states have (on average 1.5887096774193548) internal successors, (197), 124 states have internal predecessors, (197), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 02:44:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 275 transitions. [2023-11-29 02:44:17,821 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 275 transitions. Word has length 256 [2023-11-29 02:44:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:17,822 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 275 transitions. [2023-11-29 02:44:17,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 275 transitions. [2023-11-29 02:44:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-29 02:44:17,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:17,827 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:17,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:44:18,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:18,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:18,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1194493795, now seen corresponding path program 1 times [2023-11-29 02:44:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:18,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348047431] [2023-11-29 02:44:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:18,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:44:18,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961939739] [2023-11-29 02:44:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:18,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:18,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:18,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:44:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:18,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:44:18,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-29 02:44:18,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:44:18,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348047431] [2023-11-29 02:44:18,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961939739] [2023-11-29 02:44:18,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961939739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:18,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:18,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:44:18,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551234108] [2023-11-29 02:44:18,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:18,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:44:18,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:44:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:44:18,351 INFO L87 Difference]: Start difference. First operand 165 states and 275 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:18,429 INFO L93 Difference]: Finished difference Result 420 states and 694 transitions. [2023-11-29 02:44:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:44:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 258 [2023-11-29 02:44:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:18,432 INFO L225 Difference]: With dead ends: 420 [2023-11-29 02:44:18,432 INFO L226 Difference]: Without dead ends: 256 [2023-11-29 02:44:18,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 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 02:44:18,434 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 194 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:18,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 670 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:44:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-29 02:44:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 244. [2023-11-29 02:44:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 181 states have (on average 1.5469613259668509) internal successors, (280), 182 states have internal predecessors, (280), 60 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 02:44:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 400 transitions. [2023-11-29 02:44:18,460 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 400 transitions. Word has length 258 [2023-11-29 02:44:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:18,460 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 400 transitions. [2023-11-29 02:44:18,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 400 transitions. [2023-11-29 02:44:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-29 02:44:18,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:18,464 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:18,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:44:18,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:18,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:18,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:18,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1413348513, now seen corresponding path program 1 times [2023-11-29 02:44:18,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:18,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380398234] [2023-11-29 02:44:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:18,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:18,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:44:18,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692855218] [2023-11-29 02:44:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:18,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:18,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:18,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:18,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:44:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:18,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:44:18,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1508 proven. 51 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2023-11-29 02:44:19,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:44:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 63 proven. 51 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-11-29 02:44:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:19,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380398234] [2023-11-29 02:44:19,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:19,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692855218] [2023-11-29 02:44:19,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692855218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:44:19,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:44:19,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:44:19,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071921409] [2023-11-29 02:44:19,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:44:19,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:44:19,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:19,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:44:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:44:19,446 INFO L87 Difference]: Start difference. First operand 244 states and 400 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-29 02:44:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:19,884 INFO L93 Difference]: Finished difference Result 452 states and 734 transitions. [2023-11-29 02:44:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:44:19,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 258 [2023-11-29 02:44:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:19,887 INFO L225 Difference]: With dead ends: 452 [2023-11-29 02:44:19,887 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 02:44:19,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:44:19,889 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 260 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:19,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 514 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:44:19,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 02:44:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2023-11-29 02:44:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.4701492537313432) internal successors, (197), 135 states have internal predecessors, (197), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 02:44:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 317 transitions. [2023-11-29 02:44:19,907 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 317 transitions. Word has length 258 [2023-11-29 02:44:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:19,908 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 317 transitions. [2023-11-29 02:44:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-29 02:44:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 317 transitions. [2023-11-29 02:44:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-29 02:44:19,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:19,911 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:19,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:44:20,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:20,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:20,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1592163790, now seen corresponding path program 1 times [2023-11-29 02:44:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:20,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522496009] [2023-11-29 02:44:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:20,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:20,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:44:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339343331] [2023-11-29 02:44:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:20,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:20,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:20,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:20,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:44:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:20,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:44:20,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-29 02:44:20,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:44:20,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:20,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522496009] [2023-11-29 02:44:20,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:20,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339343331] [2023-11-29 02:44:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339343331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:20,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:20,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:44:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234505019] [2023-11-29 02:44:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:20,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:44:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:44:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:44:20,719 INFO L87 Difference]: Start difference. First operand 198 states and 317 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:20,932 INFO L93 Difference]: Finished difference Result 483 states and 779 transitions. [2023-11-29 02:44:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:44:20,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 258 [2023-11-29 02:44:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:20,935 INFO L225 Difference]: With dead ends: 483 [2023-11-29 02:44:20,935 INFO L226 Difference]: Without dead ends: 324 [2023-11-29 02:44:20,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 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 02:44:20,937 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 187 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:20,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 625 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:44:20,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-29 02:44:20,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 314. [2023-11-29 02:44:20,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 230 states have (on average 1.5217391304347827) internal successors, (350), 230 states have internal predecessors, (350), 78 states have call successors, (78), 5 states have call predecessors, (78), 5 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-29 02:44:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 506 transitions. [2023-11-29 02:44:20,969 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 506 transitions. Word has length 258 [2023-11-29 02:44:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:20,970 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 506 transitions. [2023-11-29 02:44:20,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 506 transitions. [2023-11-29 02:44:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-29 02:44:20,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:20,973 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:20,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:44:21,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:21,174 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:21,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1007525474, now seen corresponding path program 1 times [2023-11-29 02:44:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519404267] [2023-11-29 02:44:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:21,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:21,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:44:21,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864822276] [2023-11-29 02:44:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:21,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:21,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:21,216 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:21,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:44:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:21,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:44:21,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-29 02:44:21,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:44:21,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:21,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519404267] [2023-11-29 02:44:21,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864822276] [2023-11-29 02:44:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864822276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:21,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:21,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:44:21,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172603252] [2023-11-29 02:44:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:21,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:44:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:44:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:44:21,879 INFO L87 Difference]: Start difference. First operand 314 states and 506 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:22,076 INFO L93 Difference]: Finished difference Result 525 states and 846 transitions. [2023-11-29 02:44:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:44:22,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 259 [2023-11-29 02:44:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:22,080 INFO L225 Difference]: With dead ends: 525 [2023-11-29 02:44:22,080 INFO L226 Difference]: Without dead ends: 306 [2023-11-29 02:44:22,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 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 02:44:22,082 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 177 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:22,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 640 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:44:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-29 02:44:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 296. [2023-11-29 02:44:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 212 states have (on average 1.4952830188679245) internal successors, (317), 212 states have internal predecessors, (317), 78 states have call successors, (78), 5 states have call predecessors, (78), 5 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-29 02:44:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 473 transitions. [2023-11-29 02:44:22,115 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 473 transitions. Word has length 259 [2023-11-29 02:44:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:22,116 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 473 transitions. [2023-11-29 02:44:22,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-29 02:44:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 473 transitions. [2023-11-29 02:44:22,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-29 02:44:22,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:22,119 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:22,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:44:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:22,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:22,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1698881697, now seen corresponding path program 1 times [2023-11-29 02:44:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:22,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200619502] [2023-11-29 02:44:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:22,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:44:22,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87267846] [2023-11-29 02:44:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:22,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:22,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:22,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:44:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:22,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 02:44:22,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 852 proven. 186 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2023-11-29 02:44:26,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:44:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 36 proven. 189 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2023-11-29 02:44:41,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:41,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200619502] [2023-11-29 02:44:41,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:41,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87267846] [2023-11-29 02:44:41,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87267846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:44:41,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:44:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-11-29 02:44:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175905963] [2023-11-29 02:44:41,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:44:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 02:44:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 02:44:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2023-11-29 02:44:41,030 INFO L87 Difference]: Start difference. First operand 296 states and 473 transitions. Second operand has 26 states, 25 states have (on average 5.32) internal successors, (133), 24 states have internal predecessors, (133), 6 states have call successors, (78), 4 states have call predecessors, (78), 7 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-11-29 02:44:58,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 02:45:01,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 02:45:07,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 02:45:16,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 02:45:22,622 WARN L293 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:45:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:45:23,061 INFO L93 Difference]: Finished difference Result 1229 states and 1931 transitions. [2023-11-29 02:45:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 02:45:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 24 states have internal predecessors, (133), 6 states have call successors, (78), 4 states have call predecessors, (78), 7 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) Word has length 261 [2023-11-29 02:45:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:45:23,069 INFO L225 Difference]: With dead ends: 1229 [2023-11-29 02:45:23,069 INFO L226 Difference]: Without dead ends: 1041 [2023-11-29 02:45:23,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1610 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=1124, Invalid=4132, Unknown=0, NotChecked=0, Total=5256 [2023-11-29 02:45:23,073 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 3137 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 978 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:45:23,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 2561 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 2179 Invalid, 2 Unknown, 0 Unchecked, 19.3s Time] [2023-11-29 02:45:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-11-29 02:45:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 461. [2023-11-29 02:45:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 333 states have (on average 1.4744744744744744) internal successors, (491), 333 states have internal predecessors, (491), 117 states have call successors, (117), 10 states have call predecessors, (117), 10 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-29 02:45:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 725 transitions. [2023-11-29 02:45:23,283 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 725 transitions. Word has length 261 [2023-11-29 02:45:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:45:23,284 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 725 transitions. [2023-11-29 02:45:23,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 24 states have internal predecessors, (133), 6 states have call successors, (78), 4 states have call predecessors, (78), 7 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-11-29 02:45:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 725 transitions. [2023-11-29 02:45:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-29 02:45:23,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:45:23,287 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:23,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 02:45:23,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:45:23,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:45:23,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:45:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash -808113011, now seen corresponding path program 1 times [2023-11-29 02:45:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:45:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160451260] [2023-11-29 02:45:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:45:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:45:23,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:45:23,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524283262] [2023-11-29 02:45:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:45:23,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:45:23,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:45:23,525 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:45:23,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b547db2-815f-465e-8930-ed36a30a72d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:45:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:45:23,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 02:45:23,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:45:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1959 proven. 276 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-11-29 02:45:30,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:45:54,330 WARN L293 SmtUtils]: Spent 7.66s on a formula simplification that was a NOOP. DAG size: 261 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:48:17,333 WARN L293 SmtUtils]: Spent 10.91s on a formula simplification. DAG size of input: 262 DAG size of output: 259 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:49:02,919 WARN L293 SmtUtils]: Spent 15.49s on a formula simplification that was a NOOP. DAG size: 261 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:50:35,830 WARN L293 SmtUtils]: Spent 20.59s on a formula simplification that was a NOOP. DAG size: 261 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:53:32,874 WARN L293 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:53:38,626 WARN L293 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:54:02,552 WARN L293 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:54:18,412 WARN L293 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:54:26,225 WARN L293 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:54:42,494 WARN L293 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:54:53,532 WARN L293 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:55:00,533 WARN L293 SmtUtils]: Spent 7.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:55:13,607 WARN L293 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:55:33,272 WARN L293 SmtUtils]: Spent 5.37s 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 02:55:39,962 WARN L293 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:55:52,064 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:56:00,155 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:56:06,860 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:56:14,891 WARN L293 SmtUtils]: Spent 8.03s 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 02:56:30,714 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:56:44,790 WARN L293 SmtUtils]: Spent 7.25s 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 02:57:50,858 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:58:24,922 WARN L293 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:58:44,772 WARN L293 SmtUtils]: Spent 7.80s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:59:03,590 WARN L293 SmtUtils]: Spent 6.34s 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 02:59:16,614 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)