./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ --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 635d22826d94d730e7ad3ae4f19cd66841ae17da2d3a120d8f593801b41e2197 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:28:35,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:28:35,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:28:35,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:28:35,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:28:35,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:28:35,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:28:35,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:28:35,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:28:35,740 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:28:35,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:28:35,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:28:35,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:28:35,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:28:35,744 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:28:35,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:28:35,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:28:35,746 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:28:35,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:28:35,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:28:35,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:28:35,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:28:35,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:28:35,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:28:35,751 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:28:35,751 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:28:35,752 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:28:35,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:28:35,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:28:35,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:28:35,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:28:35,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:28:35,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:28:35,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:28:35,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:28:35,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:28:35,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:28:35,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:28:35,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:28:35,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:28:35,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:28:35,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:28:35,781 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_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635d22826d94d730e7ad3ae4f19cd66841ae17da2d3a120d8f593801b41e2197 [2023-11-23 22:28:36,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:28:36,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:28:36,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:28:36,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:28:36,201 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:28:36,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-40.i [2023-11-23 22:28:39,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:28:39,770 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:28:39,770 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-40.i [2023-11-23 22:28:39,780 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/data/da3ea578f/b83c02c019f348b0a0b3b94bf0625e95/FLAG009e2f82b [2023-11-23 22:28:39,796 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/data/da3ea578f/b83c02c019f348b0a0b3b94bf0625e95 [2023-11-23 22:28:39,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:28:39,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:28:39,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:28:39,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:28:39,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:28:39,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e473d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39, skipping insertion in model container [2023-11-23 22:28:39,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,866 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:28:40,040 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_14893f7f-3471-4d67-855d-a91cd222288d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-40.i[916,929] [2023-11-23 22:28:40,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:28:40,113 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:28:40,126 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_14893f7f-3471-4d67-855d-a91cd222288d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-40.i[916,929] [2023-11-23 22:28:40,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:28:40,196 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:28:40,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40 WrapperNode [2023-11-23 22:28:40,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:28:40,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:28:40,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:28:40,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:28:40,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,278 INFO L138 Inliner]: procedures = 29, calls = 166, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 461 [2023-11-23 22:28:40,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:28:40,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:28:40,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:28:40,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:28:40,296 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,314 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,356 INFO L189 HeapSplitter]: Split 120 memory accesses to 17 slices as follows [2, 3, 6, 10, 5, 7, 7, 6, 8, 4, 10, 9, 8, 10, 15, 3, 7] [2023-11-23 22:28:40,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,356 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:28:40,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:28:40,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:28:40,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:28:40,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (1/1) ... [2023-11-23 22:28:40,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:28:40,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:40,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:28:40,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:28:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:28:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-23 22:28:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-23 22:28:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-23 22:28:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-23 22:28:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-23 22:28:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-23 22:28:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-23 22:28:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-23 22:28:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-23 22:28:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-23 22:28:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-23 22:28:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-23 22:28:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2023-11-23 22:28:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2023-11-23 22:28:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#14 [2023-11-23 22:28:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#15 [2023-11-23 22:28:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#16 [2023-11-23 22:28:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:28:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:28:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:28:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:28:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:28:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 22:28:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 22:28:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 22:28:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 22:28:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-23 22:28:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-23 22:28:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-23 22:28:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-23 22:28:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-23 22:28:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-23 22:28:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-23 22:28:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2023-11-23 22:28:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-23 22:28:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-23 22:28:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-23 22:28:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-23 22:28:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-23 22:28:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-23 22:28:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-23 22:28:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-23 22:28:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-23 22:28:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-23 22:28:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-23 22:28:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-23 22:28:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2023-11-23 22:28:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2023-11-23 22:28:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#14 [2023-11-23 22:28:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#15 [2023-11-23 22:28:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#16 [2023-11-23 22:28:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:28:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:28:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:28:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:28:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:28:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 22:28:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 22:28:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 22:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 22:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-23 22:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-23 22:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-23 22:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-23 22:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-23 22:28:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-23 22:28:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-23 22:28:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-11-23 22:28:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-23 22:28:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-23 22:28:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-23 22:28:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-23 22:28:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-23 22:28:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-23 22:28:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-23 22:28:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-23 22:28:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-23 22:28:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-23 22:28:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-23 22:28:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-23 22:28:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2023-11-23 22:28:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2023-11-23 22:28:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#14 [2023-11-23 22:28:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#15 [2023-11-23 22:28:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#16 [2023-11-23 22:28:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 22:28:40,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 22:28:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:28:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:28:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:28:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:28:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:28:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:28:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 22:28:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 22:28:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 22:28:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 22:28:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-23 22:28:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-23 22:28:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-23 22:28:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-23 22:28:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-23 22:28:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-23 22:28:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-23 22:28:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:28:40,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:28:40,892 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:28:40,895 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:28:41,566 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:28:41,630 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:28:41,630 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:28:41,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:41 BoogieIcfgContainer [2023-11-23 22:28:41,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:28:41,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:28:41,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:28:41,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:28:41,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:28:39" (1/3) ... [2023-11-23 22:28:41,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410c1d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:41, skipping insertion in model container [2023-11-23 22:28:41,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:40" (2/3) ... [2023-11-23 22:28:41,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410c1d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:41, skipping insertion in model container [2023-11-23 22:28:41,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:41" (3/3) ... [2023-11-23 22:28:41,642 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-40.i [2023-11-23 22:28:41,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:28:41,659 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:28:41,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:28:41,718 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;@4ac389d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:28:41,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:28:41,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 83 states have internal predecessors, (120), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 22:28:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 22:28:41,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:28:41,751 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:41,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:28:41,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash 391658931, now seen corresponding path program 1 times [2023-11-23 22:28:41,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:41,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032712529] [2023-11-23 22:28:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:41,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:42,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032712529] [2023-11-23 22:28:42,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 22:28:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931796399] [2023-11-23 22:28:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:42,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:42,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:42,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:42,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:28:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:42,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 22:28:42,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-23 22:28:42,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:42,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931796399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:42,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:42,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:28:42,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293270488] [2023-11-23 22:28:42,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:42,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:28:42,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:28:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:28:42,756 INFO L87 Difference]: Start difference. First operand has 104 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 83 states have internal predecessors, (120), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 22:28:42,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:28:42,806 INFO L93 Difference]: Finished difference Result 205 states and 333 transitions. [2023-11-23 22:28:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:28:42,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2023-11-23 22:28:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:28:42,818 INFO L225 Difference]: With dead ends: 205 [2023-11-23 22:28:42,818 INFO L226 Difference]: Without dead ends: 102 [2023-11-23 22:28:42,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:28:42,826 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:28:42,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:28:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-23 22:28:42,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-11-23 22:28:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 81 states have internal predecessors, (115), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 22:28:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 153 transitions. [2023-11-23 22:28:42,882 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 153 transitions. Word has length 145 [2023-11-23 22:28:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:28:42,882 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 153 transitions. [2023-11-23 22:28:42,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 22:28:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 153 transitions. [2023-11-23 22:28:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 22:28:42,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:28:42,888 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:42,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:43,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 22:28:43,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:28:43,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash 316581765, now seen corresponding path program 1 times [2023-11-23 22:28:43,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:43,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753425279] [2023-11-23 22:28:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:43,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:28:43,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207446776] [2023-11-23 22:28:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:43,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:43,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:43,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:43,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:28:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:43,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:28:43,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-23 22:28:43,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:43,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:43,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753425279] [2023-11-23 22:28:43,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:28:43,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207446776] [2023-11-23 22:28:43,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207446776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:43,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:43,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:28:43,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514931801] [2023-11-23 22:28:43,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:43,707 INFO L87 Difference]: Start difference. First operand 102 states and 153 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:28:43,801 INFO L93 Difference]: Finished difference Result 215 states and 322 transitions. [2023-11-23 22:28:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:28:43,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-11-23 22:28:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:28:43,810 INFO L225 Difference]: With dead ends: 215 [2023-11-23 22:28:43,810 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 22:28:43,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:28:43,813 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 21 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:28:43,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 438 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:28:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 22:28:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2023-11-23 22:28:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 83 states have internal predecessors, (117), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 22:28:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 155 transitions. [2023-11-23 22:28:43,847 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 155 transitions. Word has length 145 [2023-11-23 22:28:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:28:43,851 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 155 transitions. [2023-11-23 22:28:43,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 155 transitions. [2023-11-23 22:28:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 22:28:43,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:28:43,860 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:43,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:44,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 22:28:44,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:28:44,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash -492764861, now seen corresponding path program 1 times [2023-11-23 22:28:44,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:44,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419445488] [2023-11-23 22:28:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:44,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:44,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:28:44,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493081638] [2023-11-23 22:28:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:44,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:44,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:44,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:28:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:44,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:28:44,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-23 22:28:44,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:44,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:44,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419445488] [2023-11-23 22:28:44,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:28:44,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493081638] [2023-11-23 22:28:44,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493081638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:44,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:44,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:28:44,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872427620] [2023-11-23 22:28:44,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:44,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:44,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:44,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:44,600 INFO L87 Difference]: Start difference. First operand 104 states and 155 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:44,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:28:44,648 INFO L93 Difference]: Finished difference Result 215 states and 320 transitions. [2023-11-23 22:28:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:28:44,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-11-23 22:28:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:28:44,652 INFO L225 Difference]: With dead ends: 215 [2023-11-23 22:28:44,652 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 22:28:44,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:28:44,655 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 12 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:28:44,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 436 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:28:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 22:28:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2023-11-23 22:28:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.4) internal successors, (119), 85 states have internal predecessors, (119), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 22:28:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 157 transitions. [2023-11-23 22:28:44,668 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 157 transitions. Word has length 145 [2023-11-23 22:28:44,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:28:44,669 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 157 transitions. [2023-11-23 22:28:44,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 157 transitions. [2023-11-23 22:28:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 22:28:44,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:28:44,672 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:44,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:44,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:44,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:28:44,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash -435506559, now seen corresponding path program 1 times [2023-11-23 22:28:44,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:44,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349980071] [2023-11-23 22:28:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:44,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:44,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:28:44,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271135109] [2023-11-23 22:28:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:44,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:44,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:44,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:44,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:28:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:45,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:28:45,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-23 22:28:45,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:45,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349980071] [2023-11-23 22:28:45,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:28:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271135109] [2023-11-23 22:28:45,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271135109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:45,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:45,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:28:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163317546] [2023-11-23 22:28:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:45,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:45,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:45,305 INFO L87 Difference]: Start difference. First operand 106 states and 157 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:45,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:28:45,362 INFO L93 Difference]: Finished difference Result 215 states and 318 transitions. [2023-11-23 22:28:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:28:45,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-11-23 22:28:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:28:45,368 INFO L225 Difference]: With dead ends: 215 [2023-11-23 22:28:45,368 INFO L226 Difference]: Without dead ends: 110 [2023-11-23 22:28:45,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:28:45,376 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 3 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:28:45,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 436 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:28:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-23 22:28:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-11-23 22:28:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 87 states have internal predecessors, (121), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 22:28:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 159 transitions. [2023-11-23 22:28:45,399 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 159 transitions. Word has length 145 [2023-11-23 22:28:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:28:45,401 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 159 transitions. [2023-11-23 22:28:45,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 159 transitions. [2023-11-23 22:28:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 22:28:45,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:28:45,404 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:45,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:45,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:45,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:28:45,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash -435446977, now seen corresponding path program 1 times [2023-11-23 22:28:45,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:45,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677855278] [2023-11-23 22:28:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:45,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:45,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:28:45,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932091119] [2023-11-23 22:28:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:45,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:45,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:45,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:28:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:46,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:28:46,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-23 22:28:46,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:46,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:46,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677855278] [2023-11-23 22:28:46,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:28:46,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932091119] [2023-11-23 22:28:46,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932091119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:46,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:46,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:28:46,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870406328] [2023-11-23 22:28:46,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:46,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:46,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:46,062 INFO L87 Difference]: Start difference. First operand 108 states and 159 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:46,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:28:46,108 INFO L93 Difference]: Finished difference Result 245 states and 360 transitions. [2023-11-23 22:28:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:28:46,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-11-23 22:28:46,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:28:46,111 INFO L225 Difference]: With dead ends: 245 [2023-11-23 22:28:46,111 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 22:28:46,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:28:46,112 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 48 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:28:46,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 480 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:28:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 22:28:46,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 110. [2023-11-23 22:28:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 89 states have internal predecessors, (123), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 22:28:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 161 transitions. [2023-11-23 22:28:46,128 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 161 transitions. Word has length 145 [2023-11-23 22:28:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:28:46,129 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 161 transitions. [2023-11-23 22:28:46,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 161 transitions. [2023-11-23 22:28:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 22:28:46,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:28:46,131 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:46,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:46,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:46,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:28:46,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1521149715, now seen corresponding path program 1 times [2023-11-23 22:28:46,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:46,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490871621] [2023-11-23 22:28:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:46,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:46,403 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:28:46,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489843540] [2023-11-23 22:28:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:46,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:46,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:46,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:46,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:28:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:46,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:28:46,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-23 22:28:46,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490871621] [2023-11-23 22:28:46,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:28:46,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489843540] [2023-11-23 22:28:46,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489843540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:46,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:46,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:28:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390046402] [2023-11-23 22:28:46,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:46,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:28:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:28:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:28:46,759 INFO L87 Difference]: Start difference. First operand 110 states and 161 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:28:46,827 INFO L93 Difference]: Finished difference Result 278 states and 405 transitions. [2023-11-23 22:28:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:28:46,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2023-11-23 22:28:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:28:46,830 INFO L225 Difference]: With dead ends: 278 [2023-11-23 22:28:46,830 INFO L226 Difference]: Without dead ends: 169 [2023-11-23 22:28:46,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:28:46,831 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 84 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:28:46,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 628 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:28:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-23 22:28:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 111. [2023-11-23 22:28:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 90 states have internal predecessors, (124), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 22:28:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2023-11-23 22:28:46,840 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 148 [2023-11-23 22:28:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:28:46,841 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2023-11-23 22:28:46,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:28:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2023-11-23 22:28:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 22:28:46,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:28:46,844 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:46,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 22:28:47,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:28:47,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash 7252262, now seen corresponding path program 1 times [2023-11-23 22:28:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:47,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755978956] [2023-11-23 22:28:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:47,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:47,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:28:47,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895837846] [2023-11-23 22:28:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:47,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:47,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:47,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:47,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14893f7f-3471-4d67-855d-a91cd222288d/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:28:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:47,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 22:28:47,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:47,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 22:28:48,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 22:28:53,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2023-11-23 22:28:53,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 44 [2023-11-23 22:28:53,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2023-11-23 22:28:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 11 proven. 465 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 22:28:58,636 INFO L327 TraceCheckSpWp]: Computing backward predicates...