./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx --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 998af785ff4fae0c3f310b9fe3b87371c69c6b583b1eb526ab6adc9853d45ab3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:11:05,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:11:05,640 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:11:05,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:11:05,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:11:05,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:11:05,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:11:05,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:11:05,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:11:05,704 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:11:05,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:11:05,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:11:05,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:11:05,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:11:05,708 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:11:05,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:11:05,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:11:05,709 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:11:05,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:11:05,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:11:05,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:11:05,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:11:05,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:11:05,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:11:05,714 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:11:05,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:11:05,715 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:11:05,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:11:05,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:11:05,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:11:05,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:11:05,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:11:05,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:11:05,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:11:05,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:11:05,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:11:05,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:11:05,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:11:05,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:11:05,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:11:05,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:11:05,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:11:05,720 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_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 998af785ff4fae0c3f310b9fe3b87371c69c6b583b1eb526ab6adc9853d45ab3 [2023-11-21 22:11:06,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:11:06,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:11:06,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:11:06,057 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:11:06,057 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:11:06,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-42.i [2023-11-21 22:11:09,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:11:09,567 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:11:09,568 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-42.i [2023-11-21 22:11:09,580 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/data/f257f126d/95d4d8849725432e82a9ad7a91efa8e7/FLAGf967d31d1 [2023-11-21 22:11:09,600 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/data/f257f126d/95d4d8849725432e82a9ad7a91efa8e7 [2023-11-21 22:11:09,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:11:09,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:11:09,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:11:09,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:11:09,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:11:09,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:09,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a12a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09, skipping insertion in model container [2023-11-21 22:11:09,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:09,655 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:11:09,796 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_c929c2f2-d0c1-42a6-809d-2b1921b0603f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-42.i[916,929] [2023-11-21 22:11:09,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:11:09,870 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:11:09,881 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_c929c2f2-d0c1-42a6-809d-2b1921b0603f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-42.i[916,929] [2023-11-21 22:11:09,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:11:09,940 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:11:09,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09 WrapperNode [2023-11-21 22:11:09,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:11:09,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:11:09,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:11:09,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:11:09,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:09,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,049 INFO L138 Inliner]: procedures = 29, calls = 148, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 408 [2023-11-21 22:11:10,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:11:10,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:11:10,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:11:10,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:11:10,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,083 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,139 INFO L187 HeapSplitter]: Split 115 memory accesses to 12 slices as follows [2, 9, 35, 8, 7, 14, 5, 6, 6, 8, 9, 6] [2023-11-21 22:11:10,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:11:10,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:11:10,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:11:10,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:11:10,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (1/1) ... [2023-11-21 22:11:10,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:11:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:10,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:11:10,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:11:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:11:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-21 22:11:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-21 22:11:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-21 22:11:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-21 22:11:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-21 22:11:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-21 22:11:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-21 22:11:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-21 22:11:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-21 22:11:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-21 22:11:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-21 22:11:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-21 22:11:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:11:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:11:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:11:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:11:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:11:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 22:11:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 22:11:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-21 22:11:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-21 22:11:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-21 22:11:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-21 22:11:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-21 22:11:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-21 22:11:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-21 22:11:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-21 22:11:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-21 22:11:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-21 22:11:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-21 22:11:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-21 22:11:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-21 22:11:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-21 22:11:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-21 22:11:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-21 22:11:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-21 22:11:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:11:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:11:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:11:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:11:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:11:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 22:11:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 22:11:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-21 22:11:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-21 22:11:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-21 22:11:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-21 22:11:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-21 22:11:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-21 22:11:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-21 22:11:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-21 22:11:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-21 22:11:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-21 22:11:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-21 22:11:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-21 22:11:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-21 22:11:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-21 22:11:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-21 22:11:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-21 22:11:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-21 22:11:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:11:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:11:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:11:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:11:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:11:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:11:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:11:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:11:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:11:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:11:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:11:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:11:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 22:11:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 22:11:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:11:10,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:11:10,594 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:11:10,596 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:11:11,111 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:11:11,982 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:11:11,983 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:11:11,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:11:11 BoogieIcfgContainer [2023-11-21 22:11:11,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:11:11,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:11:11,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:11:11,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:11:11,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:11:09" (1/3) ... [2023-11-21 22:11:11,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77252a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:11:11, skipping insertion in model container [2023-11-21 22:11:11,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:09" (2/3) ... [2023-11-21 22:11:11,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77252a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:11:11, skipping insertion in model container [2023-11-21 22:11:11,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:11:11" (3/3) ... [2023-11-21 22:11:11,998 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-42.i [2023-11-21 22:11:12,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:11:12,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:11:12,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:11:12,100 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;@5838101d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:11:12,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:11:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 22:11:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 22:11:12,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:12,119 INFO L195 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:11:12,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:11:12,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash 385384628, now seen corresponding path program 1 times [2023-11-21 22:11:12,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:12,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299990007] [2023-11-21 22:11:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:12,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:11:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:11:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:11:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:11:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:11:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:11:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 22:11:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 22:11:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:11:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 22:11:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-21 22:11:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-21 22:11:25,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:25,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299990007] [2023-11-21 22:11:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299990007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:11:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640825101] [2023-11-21 22:11:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:25,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:25,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:25,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:25,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c929c2f2-d0c1-42a6-809d-2b1921b0603f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:11:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:26,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-21 22:11:26,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:26,386 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 [2023-11-21 22:11:27,640 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 [2023-11-21 22:11:28,464 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 [2023-11-21 22:11:29,260 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 [2023-11-21 22:11:30,033 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 [2023-11-21 22:11:34,508 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 683 treesize of output 663 [2023-11-21 22:11:34,753 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 675 treesize of output 663 [2023-11-21 22:11:34,949 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 671 treesize of output 655 [2023-11-21 22:11:35,090 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 691 treesize of output 671 [2023-11-21 22:11:35,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 299 [2023-11-21 22:11:35,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 51 [2023-11-21 22:11:35,920 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 244 treesize of output 244 [2023-11-21 22:11:36,295 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 280 treesize of output 268 [2023-11-21 22:11:36,465 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2023-11-21 22:11:36,635 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 218 treesize of output 214 [2023-11-21 22:11:36,786 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2023-11-21 22:11:36,934 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2023-11-21 22:11:37,100 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2023-11-21 22:11:37,249 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 214 treesize of output 210 [2023-11-21 22:11:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 5 proven. 103 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:11:37,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:40,294 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 197 treesize of output 193 [2023-11-21 22:11:40,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:11:40,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 332 treesize of output 339 [2023-11-21 22:11:40,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:11:40,614 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 277 treesize of output 278 [2023-11-21 22:11:40,816 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 193 treesize of output 189 [2023-11-21 22:11:41,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:11:41,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 58 [2023-11-21 22:11:42,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:11:42,642 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 1 case distinctions, treesize of input 16 treesize of output 12 [2023-11-21 22:11:42,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:11:42,740 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 1 case distinctions, treesize of input 12 treesize of output 8 [2023-11-21 22:11:44,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:11:44,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 21 [2023-11-21 22:11:44,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 467 treesize of output 443 [2023-11-21 22:11:44,821 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 105 treesize of output 93 [2023-11-21 22:11:45,489 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 85 treesize of output 81 [2023-11-21 22:11:46,121 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 105 treesize of output 97 [2023-11-21 22:11:47,179 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 27 treesize of output 23 [2023-11-21 22:11:47,811 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 56 treesize of output 52 [2023-11-21 22:11:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-21 22:11:47,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640825101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:47,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:11:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 22] total 62 [2023-11-21 22:11:47,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667202407] [2023-11-21 22:11:47,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:47,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-21 22:11:47,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-21 22:11:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=3472, Unknown=0, NotChecked=0, Total=3782 [2023-11-21 22:11:47,996 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 62 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 49 states have internal predecessors, (58), 32 states have call successors, (33), 11 states have call predecessors, (33), 16 states have return successors, (33), 25 states have call predecessors, (33), 32 states have call successors, (33)