./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/vdp_8_unsafe.c-amalgamation.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_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/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_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/vdp_8_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/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_36d65a9b-09ba-460a-bad5-a7aadc3281dd/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 94b79c0c509fe3eb06ae9cb7443bc088811e6219e50474e7b45af99a4c1a0a43 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:12:06,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:12:06,121 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:12:06,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:12:06,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:12:06,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:12:06,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:12:06,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:12:06,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:12:06,154 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:12:06,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:12:06,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:12:06,156 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:12:06,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:12:06,157 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:12:06,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:12:06,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:12:06,159 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:12:06,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:12:06,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:12:06,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:12:06,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:12:06,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:12:06,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:12:06,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:12:06,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:12:06,163 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:12:06,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:12:06,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:12:06,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:12:06,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:12:06,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:12:06,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:12:06,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:12:06,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:12:06,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:12:06,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:12:06,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:12:06,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:12:06,168 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:12:06,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:12:06,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:12:06,168 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_36d65a9b-09ba-460a-bad5-a7aadc3281dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b79c0c509fe3eb06ae9cb7443bc088811e6219e50474e7b45af99a4c1a0a43 [2023-11-29 02:12:06,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:12:06,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:12:06,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:12:06,451 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:12:06,451 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:12:06,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/neural-networks/vdp_8_unsafe.c-amalgamation.i [2023-11-29 02:12:09,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:12:09,763 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:12:09,764 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/sv-benchmarks/c/neural-networks/vdp_8_unsafe.c-amalgamation.i [2023-11-29 02:12:09,793 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/data/fd5314ff3/8b40282ea01746dab3f850ac9b9fef2e/FLAG7dd405bd3 [2023-11-29 02:12:09,811 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/data/fd5314ff3/8b40282ea01746dab3f850ac9b9fef2e [2023-11-29 02:12:09,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:12:09,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:12:09,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:12:09,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:12:09,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:12:09,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:12:09" (1/1) ... [2023-11-29 02:12:09,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc00bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:09, skipping insertion in model container [2023-11-29 02:12:09,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:12:09" (1/1) ... [2023-11-29 02:12:09,904 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:12:10,787 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_36d65a9b-09ba-460a-bad5-a7aadc3281dd/sv-benchmarks/c/neural-networks/vdp_8_unsafe.c-amalgamation.i[63644,63657] [2023-11-29 02:12:10,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:12:10,988 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:12:11,046 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_36d65a9b-09ba-460a-bad5-a7aadc3281dd/sv-benchmarks/c/neural-networks/vdp_8_unsafe.c-amalgamation.i[63644,63657] [2023-11-29 02:12:11,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:12:11,413 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:12:11,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11 WrapperNode [2023-11-29 02:12:11,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:12:11,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:12:11,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:12:11,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:12:11,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,577 INFO L138 Inliner]: procedures = 619, calls = 1412, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1680 [2023-11-29 02:12:11,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:12:11,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:12:11,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:12:11,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:12:11,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,657 INFO L175 MemorySlicer]: Split 1388 memory accesses to 12 slices as follows [2, 7, 97, 33, 1025, 10, 33, 97, 4, 38, 36, 6]. 74 percent of accesses are in the largest equivalence class. The 1356 initializations are split as follows [2, 7, 96, 32, 1024, 0, 32, 96, 3, 32, 32, 0]. The 8 writes are split as follows [0, 0, 0, 0, 0, 3, 0, 0, 0, 2, 2, 1]. [2023-11-29 02:12:11,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:12:11,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:12:11,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:12:11,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:12:11,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (1/1) ... [2023-11-29 02:12:11,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:12:11,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:11,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:12:11,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:12:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-29 02:12:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-29 02:12:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-29 02:12:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-29 02:12:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-29 02:12:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-29 02:12:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-29 02:12:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-29 02:12:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-29 02:12:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-29 02:12:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-29 02:12:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-29 02:12:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:12:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-29 02:12:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-29 02:12:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-29 02:12:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-29 02:12:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-29 02:12:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-29 02:12:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-29 02:12:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-29 02:12:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-29 02:12:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-29 02:12:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-29 02:12:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-29 02:12:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-29 02:12:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-29 02:12:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-29 02:12:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-29 02:12:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-29 02:12:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-29 02:12:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-29 02:12:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-29 02:12:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-29 02:12:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-29 02:12:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-29 02:12:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-29 02:12:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:12:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:12:11,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:12:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:12:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:12:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:12:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:12:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:12:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:12:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 02:12:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 02:12:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 02:12:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 02:12:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 02:12:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 02:12:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 02:12:12,034 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:12:12,037 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:12:13,887 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:12:14,050 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:12:14,050 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-29 02:12:14,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:12:14 BoogieIcfgContainer [2023-11-29 02:12:14,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:12:14,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:12:14,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:12:14,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:12:14,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:12:09" (1/3) ... [2023-11-29 02:12:14,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5963d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:12:14, skipping insertion in model container [2023-11-29 02:12:14,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:11" (2/3) ... [2023-11-29 02:12:14,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5963d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:12:14, skipping insertion in model container [2023-11-29 02:12:14,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:12:14" (3/3) ... [2023-11-29 02:12:14,060 INFO L112 eAbstractionObserver]: Analyzing ICFG vdp_8_unsafe.c-amalgamation.i [2023-11-29 02:12:14,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:12:14,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:12:14,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:12:14,135 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;@3eae5fda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:12:14,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:12:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 02:12:14,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:14,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 02:12:14,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:14,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2012850619, now seen corresponding path program 1 times [2023-11-29 02:12:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:14,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347249115] [2023-11-29 02:12:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:14,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:12:14,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:14,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347249115] [2023-11-29 02:12:14,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347249115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:14,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:14,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:12:14,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225416408] [2023-11-29 02:12:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:14,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:12:14,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:12:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:12:14,744 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:14,955 INFO L93 Difference]: Finished difference Result 93 states and 159 transitions. [2023-11-29 02:12:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:12:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-29 02:12:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:14,967 INFO L225 Difference]: With dead ends: 93 [2023-11-29 02:12:14,967 INFO L226 Difference]: Without dead ends: 46 [2023-11-29 02:12:14,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 02:12:14,974 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:14,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:12:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-29 02:12:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-29 02:12:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2023-11-29 02:12:15,015 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 29 [2023-11-29 02:12:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:15,016 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2023-11-29 02:12:15,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:15,016 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2023-11-29 02:12:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 02:12:15,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:15,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 02:12:15,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:12:15,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:15,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:15,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2047546805, now seen corresponding path program 1 times [2023-11-29 02:12:15,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:15,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346693452] [2023-11-29 02:12:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:15,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:12:15,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:15,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346693452] [2023-11-29 02:12:15,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346693452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:15,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:15,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:12:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172835805] [2023-11-29 02:12:15,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:12:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:12:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:12:15,323 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:15,511 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2023-11-29 02:12:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:12:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-29 02:12:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:15,514 INFO L225 Difference]: With dead ends: 84 [2023-11-29 02:12:15,514 INFO L226 Difference]: Without dead ends: 46 [2023-11-29 02:12:15,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:12:15,517 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:15,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:12:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-29 02:12:15,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-29 02:12:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2023-11-29 02:12:15,527 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 29 [2023-11-29 02:12:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:15,528 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2023-11-29 02:12:15,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2023-11-29 02:12:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 02:12:15,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:15,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 02:12:15,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:12:15,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:15,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:15,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2028565773, now seen corresponding path program 1 times [2023-11-29 02:12:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:15,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228863712] [2023-11-29 02:12:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:12:15,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:15,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228863712] [2023-11-29 02:12:15,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228863712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:15,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:15,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:12:15,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585538051] [2023-11-29 02:12:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:15,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:15,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:12:15,990 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:16,195 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2023-11-29 02:12:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:12:16,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-29 02:12:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:16,196 INFO L225 Difference]: With dead ends: 53 [2023-11-29 02:12:16,196 INFO L226 Difference]: Without dead ends: 46 [2023-11-29 02:12:16,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:12:16,198 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:16,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 130 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:12:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-29 02:12:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-29 02:12:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2023-11-29 02:12:16,205 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 29 [2023-11-29 02:12:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:16,205 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2023-11-29 02:12:16,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2023-11-29 02:12:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 02:12:16,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:16,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 02:12:16,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:12:16,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:16,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:16,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2026718731, now seen corresponding path program 1 times [2023-11-29 02:12:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:16,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490250573] [2023-11-29 02:12:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:16,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:12:16,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490250573] [2023-11-29 02:12:16,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490250573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:16,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:16,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:12:16,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781214192] [2023-11-29 02:12:16,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:16,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:12:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:12:16,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:12:16,646 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:16,813 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2023-11-29 02:12:16,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:12:16,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-29 02:12:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:16,815 INFO L225 Difference]: With dead ends: 76 [2023-11-29 02:12:16,815 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 02:12:16,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:12:16,817 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:16,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:12:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 02:12:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2023-11-29 02:12:16,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2023-11-29 02:12:16,825 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 29 [2023-11-29 02:12:16,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:16,825 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2023-11-29 02:12:16,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2023-11-29 02:12:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 02:12:16,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:16,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:16,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:12:16,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:16,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2060179138, now seen corresponding path program 1 times [2023-11-29 02:12:16,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:16,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360729251] [2023-11-29 02:12:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:16,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:12:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360729251] [2023-11-29 02:12:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360729251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257668394] [2023-11-29 02:12:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:17,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:17,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:17,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:17,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:12:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:18,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:12:18,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:12:18,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:12:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257668394] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:18,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:12:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 02:12:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491857326] [2023-11-29 02:12:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:18,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:12:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:12:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:12:18,113 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:18,273 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2023-11-29 02:12:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:12:18,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-29 02:12:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:18,275 INFO L225 Difference]: With dead ends: 65 [2023-11-29 02:12:18,275 INFO L226 Difference]: Without dead ends: 48 [2023-11-29 02:12:18,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:12:18,277 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:18,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:12:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-29 02:12:18,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-11-29 02:12:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2023-11-29 02:12:18,283 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2023-11-29 02:12:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:18,283 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2023-11-29 02:12:18,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2023-11-29 02:12:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 02:12:18,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:18,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:18,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:18,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:18,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:18,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:18,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1389601723, now seen corresponding path program 1 times [2023-11-29 02:12:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:18,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299812273] [2023-11-29 02:12:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:18,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:12:19,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299812273] [2023-11-29 02:12:19,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299812273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:19,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216707977] [2023-11-29 02:12:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:19,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:19,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:19,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:19,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:12:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:19,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:12:19,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:12:19,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:19,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216707977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:19,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:19,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 02:12:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883618006] [2023-11-29 02:12:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:19,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:12:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:12:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:12:19,701 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:19,850 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2023-11-29 02:12:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:12:19,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-29 02:12:19,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:19,852 INFO L225 Difference]: With dead ends: 86 [2023-11-29 02:12:19,852 INFO L226 Difference]: Without dead ends: 53 [2023-11-29 02:12:19,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:12:19,854 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:19,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:12:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-29 02:12:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2023-11-29 02:12:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2023-11-29 02:12:19,860 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 35 [2023-11-29 02:12:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:19,861 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2023-11-29 02:12:19,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2023-11-29 02:12:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 02:12:19,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:19,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:19,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:12:20,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:20,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:20,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1232765958, now seen corresponding path program 1 times [2023-11-29 02:12:20,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:20,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319809710] [2023-11-29 02:12:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:20,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:12:20,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:20,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319809710] [2023-11-29 02:12:20,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319809710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89597241] [2023-11-29 02:12:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:20,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:20,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:20,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:20,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:12:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:21,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:12:21,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:12:21,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:12:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89597241] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:21,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:12:21,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 02:12:21,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588432548] [2023-11-29 02:12:21,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:21,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:12:21,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:21,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:12:21,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:12:21,108 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:21,274 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2023-11-29 02:12:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:12:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-29 02:12:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:21,276 INFO L225 Difference]: With dead ends: 72 [2023-11-29 02:12:21,276 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 02:12:21,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:12:21,277 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:21,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:12:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 02:12:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-29 02:12:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2023-11-29 02:12:21,284 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 38 [2023-11-29 02:12:21,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:21,285 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2023-11-29 02:12:21,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2023-11-29 02:12:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 02:12:21,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:21,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:21,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:21,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:21,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:21,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash 112245872, now seen corresponding path program 1 times [2023-11-29 02:12:21,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:21,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060836048] [2023-11-29 02:12:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:12:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:21,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060836048] [2023-11-29 02:12:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060836048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645604184] [2023-11-29 02:12:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:21,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:21,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:21,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:12:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:22,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:12:22,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:12:22,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:12:22,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645604184] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:22,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:12:22,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 02:12:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989265458] [2023-11-29 02:12:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:22,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:12:22,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:12:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:12:22,519 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:22,647 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2023-11-29 02:12:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:12:22,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-29 02:12:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:22,648 INFO L225 Difference]: With dead ends: 62 [2023-11-29 02:12:22,649 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 02:12:22,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:12:22,650 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:22,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:12:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 02:12:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-29 02:12:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2023-11-29 02:12:22,656 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2023-11-29 02:12:22,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:22,657 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2023-11-29 02:12:22,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:22,657 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2023-11-29 02:12:22,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 02:12:22,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:22,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:22,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:22,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:22,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:22,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1541916076, now seen corresponding path program 1 times [2023-11-29 02:12:22,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124533656] [2023-11-29 02:12:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:22,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:12:23,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:23,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124533656] [2023-11-29 02:12:23,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124533656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:23,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183393897] [2023-11-29 02:12:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:23,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:23,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:12:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:23,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:12:23,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:12:23,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:23,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183393897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:23,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:23,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 02:12:23,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465747514] [2023-11-29 02:12:23,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:23,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:23,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:23,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:23,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:12:23,841 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:23,995 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2023-11-29 02:12:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:12:23,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-11-29 02:12:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:23,996 INFO L225 Difference]: With dead ends: 94 [2023-11-29 02:12:23,996 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 02:12:23,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:12:23,998 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:23,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:12:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 02:12:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2023-11-29 02:12:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2023-11-29 02:12:24,005 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 44 [2023-11-29 02:12:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:24,005 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2023-11-29 02:12:24,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2023-11-29 02:12:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 02:12:24,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:24,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:24,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:12:24,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:24,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:24,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:24,220 INFO L85 PathProgramCache]: Analyzing trace with hash -773680908, now seen corresponding path program 1 times [2023-11-29 02:12:24,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:24,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776864287] [2023-11-29 02:12:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:24,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:12:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776864287] [2023-11-29 02:12:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776864287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627243585] [2023-11-29 02:12:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:24,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:24,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:24,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:24,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:12:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:25,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:12:25,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:12:25,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:12:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627243585] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:25,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:12:25,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2023-11-29 02:12:25,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121701258] [2023-11-29 02:12:25,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:25,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:25,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:25,280 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:25,394 INFO L93 Difference]: Finished difference Result 81 states and 107 transitions. [2023-11-29 02:12:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:12:25,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-29 02:12:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:25,396 INFO L225 Difference]: With dead ends: 81 [2023-11-29 02:12:25,396 INFO L226 Difference]: Without dead ends: 53 [2023-11-29 02:12:25,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:25,397 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:25,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:12:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-29 02:12:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-29 02:12:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:25,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2023-11-29 02:12:25,403 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 47 [2023-11-29 02:12:25,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:25,403 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2023-11-29 02:12:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2023-11-29 02:12:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 02:12:25,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:25,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:25,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:25,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:25,613 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:25,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1827829423, now seen corresponding path program 1 times [2023-11-29 02:12:25,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:25,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935884341] [2023-11-29 02:12:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:12:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:25,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935884341] [2023-11-29 02:12:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935884341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:25,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535393779] [2023-11-29 02:12:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:25,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:25,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:25,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:25,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:12:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:26,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:12:26,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:12:26,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:12:26,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535393779] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:26,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:12:26,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2023-11-29 02:12:26,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9744318] [2023-11-29 02:12:26,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:26,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:26,533 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:26,656 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2023-11-29 02:12:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:12:26,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-29 02:12:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:26,658 INFO L225 Difference]: With dead ends: 83 [2023-11-29 02:12:26,658 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 02:12:26,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:26,659 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:26,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 87 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:12:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 02:12:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-29 02:12:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2023-11-29 02:12:26,667 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 50 [2023-11-29 02:12:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:26,667 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2023-11-29 02:12:26,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2023-11-29 02:12:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 02:12:26,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:26,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:26,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:26,871 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:26,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1499770902, now seen corresponding path program 1 times [2023-11-29 02:12:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:26,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755516290] [2023-11-29 02:12:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:26,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:12:27,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:27,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755516290] [2023-11-29 02:12:27,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755516290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:27,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69404081] [2023-11-29 02:12:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:27,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:27,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:27,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:27,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:12:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:27,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:12:27,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:12:27,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:12:27,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69404081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:27,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:27,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-29 02:12:27,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738321972] [2023-11-29 02:12:27,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:27,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:12:27,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:27,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:12:27,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:12:27,925 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:28,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:28,117 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2023-11-29 02:12:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:12:28,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-29 02:12:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:28,118 INFO L225 Difference]: With dead ends: 95 [2023-11-29 02:12:28,118 INFO L226 Difference]: Without dead ends: 63 [2023-11-29 02:12:28,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:12:28,120 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:28,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 171 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:12:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-29 02:12:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-29 02:12:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2023-11-29 02:12:28,127 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 51 [2023-11-29 02:12:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:28,128 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2023-11-29 02:12:28,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2023-11-29 02:12:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 02:12:28,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:28,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:28,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:28,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:28,333 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:28,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash 696793295, now seen corresponding path program 2 times [2023-11-29 02:12:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:28,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250978025] [2023-11-29 02:12:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:28,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:12:28,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250978025] [2023-11-29 02:12:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250978025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443755798] [2023-11-29 02:12:28,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:12:28,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:28,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:28,814 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:28,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:12:29,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:12:29,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:29,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:12:29,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:12:29,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 02:12:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443755798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:29,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:29,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2023-11-29 02:12:29,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016973282] [2023-11-29 02:12:29,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:29,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:12:29,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:12:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:12:29,512 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:29,741 INFO L93 Difference]: Finished difference Result 109 states and 146 transitions. [2023-11-29 02:12:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:12:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-29 02:12:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:29,743 INFO L225 Difference]: With dead ends: 109 [2023-11-29 02:12:29,743 INFO L226 Difference]: Without dead ends: 77 [2023-11-29 02:12:29,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:12:29,744 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 28 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:29,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 185 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:12:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-29 02:12:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-11-29 02:12:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2023-11-29 02:12:29,750 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 60 [2023-11-29 02:12:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:29,751 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2023-11-29 02:12:29,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2023-11-29 02:12:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 02:12:29,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:29,752 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:29,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:12:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:29,953 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:29,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1979207413, now seen corresponding path program 3 times [2023-11-29 02:12:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:29,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485656736] [2023-11-29 02:12:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:29,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 02:12:30,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485656736] [2023-11-29 02:12:30,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485656736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948170867] [2023-11-29 02:12:30,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:12:30,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:30,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:30,543 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:30,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:12:31,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 02:12:31,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:31,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:12:31,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-29 02:12:31,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948170867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:31,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:31,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-29 02:12:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510221312] [2023-11-29 02:12:31,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:31,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:31,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:31,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:31,108 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:31,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:31,239 INFO L93 Difference]: Finished difference Result 94 states and 123 transitions. [2023-11-29 02:12:31,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:12:31,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-11-29 02:12:31,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:31,241 INFO L225 Difference]: With dead ends: 94 [2023-11-29 02:12:31,241 INFO L226 Difference]: Without dead ends: 78 [2023-11-29 02:12:31,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:31,242 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:31,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 125 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:12:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-29 02:12:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-11-29 02:12:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2023-11-29 02:12:31,247 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 72 [2023-11-29 02:12:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:31,247 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2023-11-29 02:12:31,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2023-11-29 02:12:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 02:12:31,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:31,248 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:31,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:12:31,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:12:31,449 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:31,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash 903895624, now seen corresponding path program 1 times [2023-11-29 02:12:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:31,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18522354] [2023-11-29 02:12:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 02:12:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18522354] [2023-11-29 02:12:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18522354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:31,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230164754] [2023-11-29 02:12:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:31,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:31,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:31,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:31,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:12:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:32,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:12:32,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-29 02:12:32,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:32,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230164754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:32,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:32,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-29 02:12:32,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378003503] [2023-11-29 02:12:32,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:32,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:32,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:32,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:32,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:32,399 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:32,540 INFO L93 Difference]: Finished difference Result 142 states and 187 transitions. [2023-11-29 02:12:32,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:12:32,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-29 02:12:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:32,541 INFO L225 Difference]: With dead ends: 142 [2023-11-29 02:12:32,541 INFO L226 Difference]: Without dead ends: 77 [2023-11-29 02:12:32,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:32,542 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:32,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:12:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-29 02:12:32,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-29 02:12:32,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 76 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2023-11-29 02:12:32,548 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 75 [2023-11-29 02:12:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:32,548 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2023-11-29 02:12:32,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:32,548 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2023-11-29 02:12:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 02:12:32,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:32,549 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:32,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:12:32,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:12:32,750 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:32,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:32,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1573919246, now seen corresponding path program 1 times [2023-11-29 02:12:32,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:32,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605059094] [2023-11-29 02:12:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:32,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 02:12:33,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605059094] [2023-11-29 02:12:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605059094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995369031] [2023-11-29 02:12:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:33,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:33,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:33,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:12:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:33,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 02:12:33,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 02:12:34,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-29 02:12:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995369031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:34,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:34,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2023-11-29 02:12:34,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529125667] [2023-11-29 02:12:34,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:34,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:12:34,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:34,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:12:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:12:34,161 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:34,945 INFO L93 Difference]: Finished difference Result 142 states and 192 transitions. [2023-11-29 02:12:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:12:34,945 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 02:12:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:34,946 INFO L225 Difference]: With dead ends: 142 [2023-11-29 02:12:34,946 INFO L226 Difference]: Without dead ends: 100 [2023-11-29 02:12:34,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:12:34,947 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 62 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:34,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 481 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:12:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-29 02:12:34,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2023-11-29 02:12:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 97 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2023-11-29 02:12:34,953 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 76 [2023-11-29 02:12:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:34,953 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2023-11-29 02:12:34,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:34,954 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2023-11-29 02:12:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 02:12:34,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:34,954 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:34,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:12:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:12:35,155 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:35,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:35,155 INFO L85 PathProgramCache]: Analyzing trace with hash -631789573, now seen corresponding path program 2 times [2023-11-29 02:12:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:35,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568624822] [2023-11-29 02:12:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:35,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-29 02:12:35,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:35,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568624822] [2023-11-29 02:12:35,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568624822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:35,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002475776] [2023-11-29 02:12:35,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:12:35,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:35,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:35,732 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:35,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:12:36,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:12:36,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:36,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 2213 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 02:12:36,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-29 02:12:36,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 02:12:36,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002475776] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:36,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:36,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2023-11-29 02:12:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183456107] [2023-11-29 02:12:36,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:36,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 02:12:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 02:12:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-11-29 02:12:36,767 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:38,193 INFO L93 Difference]: Finished difference Result 182 states and 246 transitions. [2023-11-29 02:12:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:12:38,194 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 02:12:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:38,195 INFO L225 Difference]: With dead ends: 182 [2023-11-29 02:12:38,195 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 02:12:38,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2023-11-29 02:12:38,197 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 72 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:38,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 707 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:12:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 02:12:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-11-29 02:12:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.322314049586777) internal successors, (160), 121 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 160 transitions. [2023-11-29 02:12:38,203 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 160 transitions. Word has length 97 [2023-11-29 02:12:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:38,204 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 160 transitions. [2023-11-29 02:12:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 160 transitions. [2023-11-29 02:12:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:12:38,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:38,205 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:38,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:38,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:12:38,406 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:38,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash 675120251, now seen corresponding path program 3 times [2023-11-29 02:12:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:38,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351832622] [2023-11-29 02:12:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-29 02:12:39,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:39,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351832622] [2023-11-29 02:12:39,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351832622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:39,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994847344] [2023-11-29 02:12:39,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:12:39,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:39,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:39,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:39,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:12:40,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 02:12:40,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:40,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 02:12:40,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-11-29 02:12:40,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2023-11-29 02:12:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994847344] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:12:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2023-11-29 02:12:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514048613] [2023-11-29 02:12:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:40,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:40,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:40,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:12:40,528 INFO L87 Difference]: Start difference. First operand 122 states and 160 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:40,679 INFO L93 Difference]: Finished difference Result 140 states and 183 transitions. [2023-11-29 02:12:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:12:40,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-11-29 02:12:40,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:40,681 INFO L225 Difference]: With dead ends: 140 [2023-11-29 02:12:40,681 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 02:12:40,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:12:40,682 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:40,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:12:40,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 02:12:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-29 02:12:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.319672131147541) internal successors, (161), 122 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2023-11-29 02:12:40,690 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 121 [2023-11-29 02:12:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:40,691 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2023-11-29 02:12:40,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2023-11-29 02:12:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:12:40,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:40,692 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:40,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:12:40,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:12:40,893 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:40,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:40,893 INFO L85 PathProgramCache]: Analyzing trace with hash 161031331, now seen corresponding path program 1 times [2023-11-29 02:12:40,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:40,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960160483] [2023-11-29 02:12:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:40,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-29 02:12:41,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960160483] [2023-11-29 02:12:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960160483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221232383] [2023-11-29 02:12:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:41,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:41,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:41,912 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:41,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:12:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:42,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 2362 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 02:12:42,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 02:12:42,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-29 02:12:43,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221232383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:43,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:43,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2023-11-29 02:12:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606688664] [2023-11-29 02:12:43,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:43,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 02:12:43,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 02:12:43,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 02:12:43,259 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:50,418 INFO L93 Difference]: Finished difference Result 225 states and 308 transitions. [2023-11-29 02:12:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 02:12:50,419 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-11-29 02:12:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:50,420 INFO L225 Difference]: With dead ends: 225 [2023-11-29 02:12:50,420 INFO L226 Difference]: Without dead ends: 164 [2023-11-29 02:12:50,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 02:12:50,421 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 189 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:50,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1576 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:12:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-29 02:12:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2023-11-29 02:12:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 161 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 213 transitions. [2023-11-29 02:12:50,430 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 213 transitions. Word has length 122 [2023-11-29 02:12:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:50,430 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 213 transitions. [2023-11-29 02:12:50,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 213 transitions. [2023-11-29 02:12:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:12:50,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:50,432 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:50,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:50,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:50,633 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:50,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -718265104, now seen corresponding path program 2 times [2023-11-29 02:12:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:50,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401265623] [2023-11-29 02:12:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2023-11-29 02:12:51,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:51,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401265623] [2023-11-29 02:12:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401265623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:51,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006343515] [2023-11-29 02:12:51,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:12:51,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:51,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:51,891 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:51,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:12:52,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:12:52,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:52,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 2596 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 02:12:52,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2023-11-29 02:12:52,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 322 proven. 660 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 02:12:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006343515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:54,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2023-11-29 02:12:54,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611517733] [2023-11-29 02:12:54,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:54,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 02:12:54,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 02:12:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 02:12:54,296 INFO L87 Difference]: Start difference. First operand 162 states and 213 transitions. Second operand has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:13:29,320 INFO L93 Difference]: Finished difference Result 310 states and 425 transitions. [2023-11-29 02:13:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 02:13:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-11-29 02:13:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:13:29,322 INFO L225 Difference]: With dead ends: 310 [2023-11-29 02:13:29,322 INFO L226 Difference]: Without dead ends: 213 [2023-11-29 02:13:29,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 02:13:29,324 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 300 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:13:29,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1850 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:13:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-29 02:13:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-29 02:13:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.3254716981132075) internal successors, (281), 212 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 281 transitions. [2023-11-29 02:13:29,334 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 281 transitions. Word has length 161 [2023-11-29 02:13:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:13:29,334 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 281 transitions. [2023-11-29 02:13:29,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 281 transitions. [2023-11-29 02:13:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-29 02:13:29,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:13:29,336 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:29,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:13:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:29,537 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:13:29,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:13:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash 208436291, now seen corresponding path program 3 times [2023-11-29 02:13:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:13:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151967056] [2023-11-29 02:13:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:13:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:13:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:13:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2023-11-29 02:13:31,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:13:31,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151967056] [2023-11-29 02:13:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151967056] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:13:31,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587318989] [2023-11-29 02:13:31,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:13:31,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:31,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:13:31,590 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:13:31,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:13:32,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 02:13:32,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:13:32,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 02:13:32,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:13:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2242 trivial. 0 not checked. [2023-11-29 02:13:32,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:13:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2023-11-29 02:13:32,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587318989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:13:32,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:13:32,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 7] total 33 [2023-11-29 02:13:32,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684185599] [2023-11-29 02:13:32,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:13:32,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 02:13:32,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:13:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 02:13:32,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 02:13:32,924 INFO L87 Difference]: Start difference. First operand 213 states and 281 transitions. Second operand has 33 states, 33 states have (on average 4.9393939393939394) internal successors, (163), 33 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:13:34,413 INFO L93 Difference]: Finished difference Result 432 states and 575 transitions. [2023-11-29 02:13:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:13:34,414 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.9393939393939394) internal successors, (163), 33 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2023-11-29 02:13:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:13:34,415 INFO L225 Difference]: With dead ends: 432 [2023-11-29 02:13:34,415 INFO L226 Difference]: Without dead ends: 230 [2023-11-29 02:13:34,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 02:13:34,417 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 79 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:13:34,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1386 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:13:34,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-29 02:13:34,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2023-11-29 02:13:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3215859030837005) internal successors, (300), 227 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 300 transitions. [2023-11-29 02:13:34,431 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 300 transitions. Word has length 212 [2023-11-29 02:13:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:13:34,431 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 300 transitions. [2023-11-29 02:13:34,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.9393939393939394) internal successors, (163), 33 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 300 transitions. [2023-11-29 02:13:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-29 02:13:34,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:13:34,434 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 23, 23, 23, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:34,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:13:34,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:34,635 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:13:34,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:13:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash 483531704, now seen corresponding path program 4 times [2023-11-29 02:13:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:13:34,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612011831] [2023-11-29 02:13:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:13:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:13:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:13:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 1571 trivial. 0 not checked. [2023-11-29 02:13:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:13:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612011831] [2023-11-29 02:13:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612011831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:13:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654005322] [2023-11-29 02:13:36,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:13:36,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:36,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:13:36,816 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:13:36,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:13:37,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:13:37,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:13:37,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 98 conjunts are in the unsatisfiable core [2023-11-29 02:13:37,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:13:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 2194 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-29 02:13:38,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:13:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 1571 trivial. 0 not checked. [2023-11-29 02:13:40,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654005322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:13:40,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:13:40,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 50, 26] total 75 [2023-11-29 02:13:40,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399186980] [2023-11-29 02:13:40,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:13:40,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-11-29 02:13:40,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:13:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-11-29 02:13:40,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=4914, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 02:13:40,043 INFO L87 Difference]: Start difference. First operand 228 states and 300 transitions. Second operand has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:13:47,011 INFO L93 Difference]: Finished difference Result 275 states and 369 transitions. [2023-11-29 02:13:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 02:13:47,012 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2023-11-29 02:13:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:13:47,014 INFO L225 Difference]: With dead ends: 275 [2023-11-29 02:13:47,015 INFO L226 Difference]: Without dead ends: 255 [2023-11-29 02:13:47,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=881, Invalid=5761, Unknown=0, NotChecked=0, Total=6642 [2023-11-29 02:13:47,018 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 311 mSDsluCounter, 4027 mSDsCounter, 0 mSdLazyCounter, 7531 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 7532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:13:47,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 4114 Invalid, 7532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7531 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 02:13:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-29 02:13:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-11-29 02:13:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.3228346456692914) internal successors, (336), 254 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 336 transitions. [2023-11-29 02:13:47,030 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 336 transitions. Word has length 227 [2023-11-29 02:13:47,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:13:47,030 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 336 transitions. [2023-11-29 02:13:47,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:13:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 336 transitions. [2023-11-29 02:13:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-29 02:13:47,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:13:47,033 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:47,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:13:47,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 02:13:47,234 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:13:47,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:13:47,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1595327765, now seen corresponding path program 5 times [2023-11-29 02:13:47,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:13:47,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130550808] [2023-11-29 02:13:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:13:47,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:13:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:13:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3091 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3073 trivial. 0 not checked. [2023-11-29 02:13:48,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:13:48,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130550808] [2023-11-29 02:13:48,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130550808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:13:48,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926701966] [2023-11-29 02:13:48,715 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 02:13:48,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:48,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:13:48,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:13:48,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d65a9b-09ba-460a-bad5-a7aadc3281dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process