./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b3d37dbb1f844bbdab9795055d991e82d88af691e0e65987480a92814525937 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:38:24,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:38:24,311 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:38:24,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:38:24,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:38:24,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:38:24,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:38:24,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:38:24,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:38:24,344 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:38:24,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:38:24,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:38:24,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:38:24,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:38:24,347 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:38:24,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:38:24,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:38:24,348 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:38:24,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:38:24,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:38:24,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:38:24,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:38:24,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:38:24,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:38:24,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:38:24,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:38:24,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:38:24,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:38:24,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:38:24,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:38:24,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:38:24,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:24,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:38:24,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:38:24,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:38:24,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:38:24,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:38:24,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:38:24,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:38:24,357 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:38:24,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:38:24,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:38:24,358 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_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3d37dbb1f844bbdab9795055d991e82d88af691e0e65987480a92814525937 [2023-11-29 04:38:24,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:38:24,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:38:24,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:38:24,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:38:24,614 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:38:24,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i [2023-11-29 04:38:27,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:38:27,537 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:38:27,538 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i [2023-11-29 04:38:27,547 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/data/c51d8edf8/5053bacb8e48430095d52692c6d2f41c/FLAG905e71fb7 [2023-11-29 04:38:27,561 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/data/c51d8edf8/5053bacb8e48430095d52692c6d2f41c [2023-11-29 04:38:27,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:38:27,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:38:27,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:27,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:38:27,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:38:27,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2775076e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27, skipping insertion in model container [2023-11-29 04:38:27,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,608 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:38:27,738 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_32ea680d-8476-447c-ab86-044d784ae23a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i[917,930] [2023-11-29 04:38:27,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:27,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:38:27,822 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_32ea680d-8476-447c-ab86-044d784ae23a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i[917,930] [2023-11-29 04:38:27,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:27,874 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:38:27,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27 WrapperNode [2023-11-29 04:38:27,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:27,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:38:27,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:38:27,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:38:27,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,941 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 401 [2023-11-29 04:38:27,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:38:27,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:38:27,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:38:27,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:38:27,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,982 INFO L175 MemorySlicer]: Split 123 memory accesses to 4 slices as follows [2, 38, 12, 71]. 58 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 2, 4]. The 14 writes are split as follows [0, 8, 2, 4]. [2023-11-29 04:38:27,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:27,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:28,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:28,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:28,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:28,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:38:28,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:38:28,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:38:28,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:38:28,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (1/1) ... [2023-11-29 04:38:28,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:28,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:28,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:38:28,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:38:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:38:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:38:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:38:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:38:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:38:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:38:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:38:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:38:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:38:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:38:28,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:38:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:38:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:38:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:38:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:38:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:38:28,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:38:28,209 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:38:28,211 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:38:28,646 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:38:28,680 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:38:28,680 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:38:28,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:28 BoogieIcfgContainer [2023-11-29 04:38:28,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:38:28,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:38:28,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:38:28,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:38:28,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:38:27" (1/3) ... [2023-11-29 04:38:28,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6a94aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:38:28, skipping insertion in model container [2023-11-29 04:38:28,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:27" (2/3) ... [2023-11-29 04:38:28,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6a94aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:38:28, skipping insertion in model container [2023-11-29 04:38:28,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:28" (3/3) ... [2023-11-29 04:38:28,690 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-12.i [2023-11-29 04:38:28,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:38:28,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:38:28,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:38:28,769 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;@7f91ec57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:38:28,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:38:28,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:28,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 04:38:28,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:28,785 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:28,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:28,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:28,792 INFO L85 PathProgramCache]: Analyzing trace with hash 352771580, now seen corresponding path program 1 times [2023-11-29 04:38:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:28,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249878602] [2023-11-29 04:38:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:28,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249878602] [2023-11-29 04:38:28,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:38:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675526731] [2023-11-29 04:38:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:28,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:28,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:28,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:28,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:38:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:29,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:38:29,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-29 04:38:29,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:29,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675526731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:29,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:29,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:38:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358460546] [2023-11-29 04:38:29,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:29,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:38:29,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:38:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:38:29,297 INFO L87 Difference]: Start difference. First operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 04:38:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:29,339 INFO L93 Difference]: Finished difference Result 173 states and 274 transitions. [2023-11-29 04:38:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:38:29,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2023-11-29 04:38:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:29,363 INFO L225 Difference]: With dead ends: 173 [2023-11-29 04:38:29,363 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 04:38:29,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:38:29,371 INFO L413 NwaCegarLoop]: 114 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, 114 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 [2023-11-29 04:38:29,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:38:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 04:38:29,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 04:38:29,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:29,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-11-29 04:38:29,418 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 112 [2023-11-29 04:38:29,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:29,419 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-11-29 04:38:29,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 04:38:29,419 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-11-29 04:38:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 04:38:29,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:29,423 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:29,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:38:29,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:38:29,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:29,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash 698291676, now seen corresponding path program 1 times [2023-11-29 04:38:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:29,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267916507] [2023-11-29 04:38:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:29,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:29,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:29,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557518777] [2023-11-29 04:38:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:29,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:29,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:29,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:29,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:38:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:29,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:38:29,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:29,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:29,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:29,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267916507] [2023-11-29 04:38:29,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:29,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557518777] [2023-11-29 04:38:29,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557518777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:29,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:29,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:38:29,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467031507] [2023-11-29 04:38:29,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:29,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:38:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:38:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:38:29,935 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:29,984 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2023-11-29 04:38:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:38:29,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2023-11-29 04:38:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:29,987 INFO L225 Difference]: With dead ends: 165 [2023-11-29 04:38:29,987 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 04:38:29,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:38:29,990 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 45 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:29,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 286 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:38:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 04:38:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 04:38:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-11-29 04:38:30,003 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 112 [2023-11-29 04:38:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:30,005 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-11-29 04:38:30,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-11-29 04:38:30,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 04:38:30,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:30,008 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:30,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:38:30,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:30,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:30,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash 555057374, now seen corresponding path program 1 times [2023-11-29 04:38:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949892233] [2023-11-29 04:38:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:30,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:30,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:30,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124901302] [2023-11-29 04:38:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:30,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:30,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:30,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:30,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:38:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:30,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:38:30,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:30,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:30,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949892233] [2023-11-29 04:38:30,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:30,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124901302] [2023-11-29 04:38:30,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124901302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:30,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:30,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:38:30,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132436343] [2023-11-29 04:38:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:30,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:38:30,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:30,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:38:30,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:38:30,489 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:30,549 INFO L93 Difference]: Finished difference Result 177 states and 250 transitions. [2023-11-29 04:38:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:38:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 114 [2023-11-29 04:38:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:30,552 INFO L225 Difference]: With dead ends: 177 [2023-11-29 04:38:30,552 INFO L226 Difference]: Without dead ends: 95 [2023-11-29 04:38:30,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:38:30,554 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 65 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:30,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:38:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-29 04:38:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2023-11-29 04:38:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-11-29 04:38:30,567 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 114 [2023-11-29 04:38:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:30,568 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-11-29 04:38:30,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-11-29 04:38:30,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 04:38:30,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:30,571 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:30,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:38:30,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:30,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:30,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:30,778 INFO L85 PathProgramCache]: Analyzing trace with hash -80309382, now seen corresponding path program 1 times [2023-11-29 04:38:30,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088538664] [2023-11-29 04:38:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:30,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:30,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758415141] [2023-11-29 04:38:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:30,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:30,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:30,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:30,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:38:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:31,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 04:38:31,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:31,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 04:38:31,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:38:31,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 28 [2023-11-29 04:38:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:32,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:32,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:32,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088538664] [2023-11-29 04:38:32,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:32,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758415141] [2023-11-29 04:38:32,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758415141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:32,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:32,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:38:32,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257282419] [2023-11-29 04:38:32,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:32,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:38:32,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:32,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:38:32,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:38:32,024 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:32,305 INFO L93 Difference]: Finished difference Result 126 states and 170 transitions. [2023-11-29 04:38:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:38:32,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 116 [2023-11-29 04:38:32,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:32,308 INFO L225 Difference]: With dead ends: 126 [2023-11-29 04:38:32,308 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 04:38:32,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:38:32,310 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 193 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:32,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 477 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:38:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 04:38:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 110. [2023-11-29 04:38:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 92 states have internal predecessors, (119), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 151 transitions. [2023-11-29 04:38:32,324 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 151 transitions. Word has length 116 [2023-11-29 04:38:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:32,325 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 151 transitions. [2023-11-29 04:38:32,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:32,325 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 151 transitions. [2023-11-29 04:38:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 04:38:32,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:32,328 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:32,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:38:32,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:32,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:32,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:32,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1148274937, now seen corresponding path program 1 times [2023-11-29 04:38:32,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:32,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350456322] [2023-11-29 04:38:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:32,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:32,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:32,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813624599] [2023-11-29 04:38:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:32,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:32,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:32,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:32,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:38:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:32,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-29 04:38:32,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:32,812 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 [2023-11-29 04:38:33,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:38:34,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 04:38:35,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-11-29 04:38:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 192 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 04:38:36,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350456322] [2023-11-29 04:38:36,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813624599] [2023-11-29 04:38:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813624599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:36,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:36,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-11-29 04:38:36,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249302020] [2023-11-29 04:38:36,761 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:38:36,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 04:38:36,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:36,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 04:38:36,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 04:38:36,764 INFO L87 Difference]: Start difference. First operand 110 states and 151 transitions. Second operand has 26 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 21 states have internal predecessors, (52), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-29 04:38:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:38,350 INFO L93 Difference]: Finished difference Result 168 states and 215 transitions. [2023-11-29 04:38:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 04:38:38,351 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 21 states have internal predecessors, (52), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 117 [2023-11-29 04:38:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:38,353 INFO L225 Difference]: With dead ends: 168 [2023-11-29 04:38:38,353 INFO L226 Difference]: Without dead ends: 166 [2023-11-29 04:38:38,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 04:38:38,356 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 371 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:38,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1446 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:38:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-29 04:38:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 126. [2023-11-29 04:38:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2023-11-29 04:38:38,374 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 117 [2023-11-29 04:38:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:38,374 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2023-11-29 04:38:38,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 21 states have internal predecessors, (52), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-29 04:38:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2023-11-29 04:38:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 04:38:38,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:38,377 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:38,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:38:38,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:38,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:38,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash 965098533, now seen corresponding path program 1 times [2023-11-29 04:38:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:38,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616968610] [2023-11-29 04:38:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:38,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:38,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194832160] [2023-11-29 04:38:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:38,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:38,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:38,618 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:38,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:38:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:38,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 80 conjunts are in the unsatisfiable core [2023-11-29 04:38:38,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:38,880 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 [2023-11-29 04:38:39,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:38:40,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 04:38:41,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:38:41,667 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:38:41,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2023-11-29 04:38:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 192 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 04:38:42,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:42,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:42,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616968610] [2023-11-29 04:38:42,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:42,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194832160] [2023-11-29 04:38:42,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194832160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:42,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:42,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-11-29 04:38:42,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430013887] [2023-11-29 04:38:42,593 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:38:42,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 04:38:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:38:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 04:38:42,595 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand has 27 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-29 04:38:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:44,330 INFO L93 Difference]: Finished difference Result 185 states and 235 transitions. [2023-11-29 04:38:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 04:38:44,331 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 118 [2023-11-29 04:38:44,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:44,332 INFO L225 Difference]: With dead ends: 185 [2023-11-29 04:38:44,333 INFO L226 Difference]: Without dead ends: 183 [2023-11-29 04:38:44,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=457, Invalid=2735, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 04:38:44,334 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 624 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:44,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1094 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:38:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-29 04:38:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2023-11-29 04:38:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.2755905511811023) internal successors, (162), 127 states have internal predecessors, (162), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 194 transitions. [2023-11-29 04:38:44,354 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 194 transitions. Word has length 118 [2023-11-29 04:38:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:44,354 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 194 transitions. [2023-11-29 04:38:44,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-29 04:38:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 194 transitions. [2023-11-29 04:38:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 04:38:44,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:44,357 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:44,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:38:44,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 04:38:44,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:44,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash 926800935, now seen corresponding path program 1 times [2023-11-29 04:38:44,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:44,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402191128] [2023-11-29 04:38:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:44,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:44,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:44,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760328462] [2023-11-29 04:38:44,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:44,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:44,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:44,588 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:44,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:38:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:44,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:38:44,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:44,779 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 04:38:44,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-11-29 04:38:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:44,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402191128] [2023-11-29 04:38:44,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760328462] [2023-11-29 04:38:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760328462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:44,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:38:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025602928] [2023-11-29 04:38:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:44,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:38:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:38:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:38:44,789 INFO L87 Difference]: Start difference. First operand 149 states and 194 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:44,872 INFO L93 Difference]: Finished difference Result 402 states and 514 transitions. [2023-11-29 04:38:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:38:44,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-11-29 04:38:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:44,875 INFO L225 Difference]: With dead ends: 402 [2023-11-29 04:38:44,875 INFO L226 Difference]: Without dead ends: 254 [2023-11-29 04:38:44,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:38:44,877 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 83 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:44,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 474 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:38:44,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-29 04:38:44,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2023-11-29 04:38:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 203 states have (on average 1.2315270935960592) internal successors, (250), 204 states have internal predecessors, (250), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 04:38:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 294 transitions. [2023-11-29 04:38:44,897 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 294 transitions. Word has length 119 [2023-11-29 04:38:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:44,898 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 294 transitions. [2023-11-29 04:38:44,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 294 transitions. [2023-11-29 04:38:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 04:38:44,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:44,899 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:44,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:38:45,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:45,102 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:45,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:45,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1084696468, now seen corresponding path program 1 times [2023-11-29 04:38:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:45,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047462250] [2023-11-29 04:38:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:45,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:45,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073170070] [2023-11-29 04:38:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:45,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:45,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:45,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:38:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:45,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:38:45,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:45,450 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 [2023-11-29 04:38:45,709 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 35 treesize of output 23 [2023-11-29 04:38:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-29 04:38:45,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:45,872 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 31 treesize of output 27 [2023-11-29 04:38:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-29 04:38:45,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:45,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047462250] [2023-11-29 04:38:45,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:45,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073170070] [2023-11-29 04:38:45,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073170070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:38:45,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:38:45,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-11-29 04:38:45,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131488508] [2023-11-29 04:38:45,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:38:45,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:38:45,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:38:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:38:45,922 INFO L87 Difference]: Start difference. First operand 236 states and 294 transitions. Second operand has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 14 states have internal predecessors, (76), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-29 04:38:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:46,312 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2023-11-29 04:38:46,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:38:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 14 states have internal predecessors, (76), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) Word has length 119 [2023-11-29 04:38:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:46,316 INFO L225 Difference]: With dead ends: 506 [2023-11-29 04:38:46,316 INFO L226 Difference]: Without dead ends: 271 [2023-11-29 04:38:46,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:38:46,318 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 103 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:46,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 528 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:38:46,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-29 04:38:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 181. [2023-11-29 04:38:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 158 states have (on average 1.2341772151898733) internal successors, (195), 158 states have internal predecessors, (195), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 227 transitions. [2023-11-29 04:38:46,338 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 227 transitions. Word has length 119 [2023-11-29 04:38:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:46,339 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 227 transitions. [2023-11-29 04:38:46,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 14 states have internal predecessors, (76), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-29 04:38:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 227 transitions. [2023-11-29 04:38:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 04:38:46,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:46,340 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:46,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:38:46,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:46,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:46,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1147383922, now seen corresponding path program 1 times [2023-11-29 04:38:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:46,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610693544] [2023-11-29 04:38:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:46,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:46,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:46,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479473132] [2023-11-29 04:38:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:46,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:46,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:46,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:38:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:46,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 04:38:46,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:46,829 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 [2023-11-29 04:38:46,927 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 [2023-11-29 04:38:47,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:38:47,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 04:38:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:38:47,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:38:47,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 28 [2023-11-29 04:38:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-29 04:38:47,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:47,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:47,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610693544] [2023-11-29 04:38:47,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:47,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479473132] [2023-11-29 04:38:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479473132] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:47,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-29 04:38:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046913244] [2023-11-29 04:38:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:38:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:38:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:38:47,560 INFO L87 Difference]: Start difference. First operand 181 states and 227 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:47,735 INFO L93 Difference]: Finished difference Result 203 states and 252 transitions. [2023-11-29 04:38:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:38:47,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-11-29 04:38:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:47,737 INFO L225 Difference]: With dead ends: 203 [2023-11-29 04:38:47,737 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 04:38:47,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:38:47,738 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 77 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:47,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 865 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:38:47,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 04:38:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 153. [2023-11-29 04:38:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 130 states have internal predecessors, (160), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 192 transitions. [2023-11-29 04:38:47,752 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 192 transitions. Word has length 119 [2023-11-29 04:38:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:47,752 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 192 transitions. [2023-11-29 04:38:47,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 192 transitions. [2023-11-29 04:38:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 04:38:47,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:47,753 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:47,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 04:38:47,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 04:38:47,954 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:47,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:47,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1212399850, now seen corresponding path program 1 times [2023-11-29 04:38:47,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:47,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374179760] [2023-11-29 04:38:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:47,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:47,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:47,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488160350] [2023-11-29 04:38:47,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:47,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:47,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:47,980 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:47,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:38:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:48,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:38:48,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:48,369 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 [2023-11-29 04:38:49,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:38:49,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:38:49,084 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 35 treesize of output 23 [2023-11-29 04:38:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-29 04:38:49,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:49,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:49,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374179760] [2023-11-29 04:38:49,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:49,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488160350] [2023-11-29 04:38:49,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488160350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:49,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:49,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 04:38:49,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222862297] [2023-11-29 04:38:49,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:38:49,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:38:49,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:38:49,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:38:49,159 INFO L87 Difference]: Start difference. First operand 153 states and 192 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-29 04:38:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:49,516 INFO L93 Difference]: Finished difference Result 309 states and 387 transitions. [2023-11-29 04:38:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:38:49,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 120 [2023-11-29 04:38:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:49,518 INFO L225 Difference]: With dead ends: 309 [2023-11-29 04:38:49,518 INFO L226 Difference]: Without dead ends: 157 [2023-11-29 04:38:49,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:38:49,519 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 142 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:49,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 335 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:38:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-29 04:38:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2023-11-29 04:38:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 130 states have (on average 1.2230769230769232) internal successors, (159), 130 states have internal predecessors, (159), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 191 transitions. [2023-11-29 04:38:49,532 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 191 transitions. Word has length 120 [2023-11-29 04:38:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:49,532 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 191 transitions. [2023-11-29 04:38:49,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-29 04:38:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 191 transitions. [2023-11-29 04:38:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 04:38:49,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:49,534 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:49,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:38:49,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:49,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:49,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:49,735 INFO L85 PathProgramCache]: Analyzing trace with hash 404790098, now seen corresponding path program 1 times [2023-11-29 04:38:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:49,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907565418] [2023-11-29 04:38:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:49,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:49,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:49,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200518367] [2023-11-29 04:38:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:49,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:49,760 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:49,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:38:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:49,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:38:49,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:50,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:38:50,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2023-11-29 04:38:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:50,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:50,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907565418] [2023-11-29 04:38:50,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200518367] [2023-11-29 04:38:50,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200518367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:50,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:50,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:38:50,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844444465] [2023-11-29 04:38:50,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:50,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:38:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:38:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:38:50,079 INFO L87 Difference]: Start difference. First operand 153 states and 191 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:50,336 INFO L93 Difference]: Finished difference Result 395 states and 484 transitions. [2023-11-29 04:38:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:38:50,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-11-29 04:38:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:50,339 INFO L225 Difference]: With dead ends: 395 [2023-11-29 04:38:50,339 INFO L226 Difference]: Without dead ends: 243 [2023-11-29 04:38:50,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:38:50,341 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 75 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:50,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 504 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:38:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-29 04:38:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2023-11-29 04:38:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 200 states have (on average 1.185) internal successors, (237), 201 states have internal predecessors, (237), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 04:38:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 289 transitions. [2023-11-29 04:38:50,375 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 289 transitions. Word has length 121 [2023-11-29 04:38:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:50,375 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 289 transitions. [2023-11-29 04:38:50,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 289 transitions. [2023-11-29 04:38:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 04:38:50,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:50,377 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:50,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:38:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:50,577 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:50,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1323312016, now seen corresponding path program 1 times [2023-11-29 04:38:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:50,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282638104] [2023-11-29 04:38:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:50,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:50,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:50,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476686709] [2023-11-29 04:38:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:50,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:50,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:50,605 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:50,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:38:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:50,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:38:50,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:50,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:38:50,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 64 [2023-11-29 04:38:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:50,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282638104] [2023-11-29 04:38:50,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476686709] [2023-11-29 04:38:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476686709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:50,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:50,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:38:50,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92360311] [2023-11-29 04:38:50,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:50,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:38:50,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:38:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:38:50,928 INFO L87 Difference]: Start difference. First operand 239 states and 289 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:51,151 INFO L93 Difference]: Finished difference Result 476 states and 572 transitions. [2023-11-29 04:38:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:38:51,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-11-29 04:38:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:51,154 INFO L225 Difference]: With dead ends: 476 [2023-11-29 04:38:51,155 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 04:38:51,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:38:51,156 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 57 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:51,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 331 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:38:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 04:38:51,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 185. [2023-11-29 04:38:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.204968944099379) internal successors, (194), 161 states have internal predecessors, (194), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2023-11-29 04:38:51,181 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 122 [2023-11-29 04:38:51,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:51,182 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2023-11-29 04:38:51,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:51,182 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2023-11-29 04:38:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 04:38:51,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:51,184 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:51,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:38:51,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:38:51,386 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:51,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1005736451, now seen corresponding path program 1 times [2023-11-29 04:38:51,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:51,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296774141] [2023-11-29 04:38:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:51,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:51,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:51,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781916355] [2023-11-29 04:38:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:51,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:51,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:51,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:51,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:38:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:51,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:38:51,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:52,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:38:52,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 40 [2023-11-29 04:38:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:52,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:52,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:52,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296774141] [2023-11-29 04:38:52,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:52,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781916355] [2023-11-29 04:38:52,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781916355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:52,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:52,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:38:52,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185018707] [2023-11-29 04:38:52,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:52,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:38:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:52,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:38:52,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:38:52,086 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:55,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:55,726 INFO L93 Difference]: Finished difference Result 426 states and 513 transitions. [2023-11-29 04:38:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:38:55,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-11-29 04:38:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:55,729 INFO L225 Difference]: With dead ends: 426 [2023-11-29 04:38:55,729 INFO L226 Difference]: Without dead ends: 242 [2023-11-29 04:38:55,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:38:55,730 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 80 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:55,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 495 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 04:38:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-29 04:38:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 185. [2023-11-29 04:38:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.1987577639751552) internal successors, (193), 161 states have internal predecessors, (193), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 225 transitions. [2023-11-29 04:38:55,757 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 225 transitions. Word has length 123 [2023-11-29 04:38:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:55,757 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 225 transitions. [2023-11-29 04:38:55,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 225 transitions. [2023-11-29 04:38:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 04:38:55,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:55,759 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:55,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:38:55,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:55,960 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:55,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:55,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1818255933, now seen corresponding path program 1 times [2023-11-29 04:38:55,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:55,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853064745] [2023-11-29 04:38:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:55,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:55,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:55,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216868615] [2023-11-29 04:38:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:55,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:55,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:55,986 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:55,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:38:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:56,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:38:56,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:56,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:38:56,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 40 [2023-11-29 04:38:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:56,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:56,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853064745] [2023-11-29 04:38:56,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216868615] [2023-11-29 04:38:56,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216868615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:56,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:56,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:38:56,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299208023] [2023-11-29 04:38:56,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:56,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:38:56,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:38:56,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:38:56,259 INFO L87 Difference]: Start difference. First operand 185 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:58,292 INFO L93 Difference]: Finished difference Result 422 states and 506 transitions. [2023-11-29 04:38:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:38:58,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-11-29 04:38:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:58,294 INFO L225 Difference]: With dead ends: 422 [2023-11-29 04:38:58,295 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 04:38:58,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:38:58,296 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 69 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:58,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 386 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 04:38:58,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 04:38:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 185. [2023-11-29 04:38:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.1925465838509317) internal successors, (192), 161 states have internal predecessors, (192), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2023-11-29 04:38:58,323 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 123 [2023-11-29 04:38:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:58,323 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2023-11-29 04:38:58,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2023-11-29 04:38:58,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 04:38:58,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:58,325 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:58,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:38:58,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:58,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:58,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1363403663, now seen corresponding path program 1 times [2023-11-29 04:38:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:58,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523023333] [2023-11-29 04:38:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:58,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:58,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:58,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584286169] [2023-11-29 04:38:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:58,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:58,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:58,547 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:58,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:38:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:58,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:38:58,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:58,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:38:58,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 04:38:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:38:58,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523023333] [2023-11-29 04:38:58,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584286169] [2023-11-29 04:38:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584286169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:58,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:58,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:38:58,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325210171] [2023-11-29 04:38:58,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:38:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:38:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:38:58,739 INFO L87 Difference]: Start difference. First operand 185 states and 224 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:58,928 INFO L93 Difference]: Finished difference Result 423 states and 508 transitions. [2023-11-29 04:38:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:38:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 04:38:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:58,930 INFO L225 Difference]: With dead ends: 423 [2023-11-29 04:38:58,930 INFO L226 Difference]: Without dead ends: 239 [2023-11-29 04:38:58,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:38:58,931 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 60 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:58,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 340 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:38:58,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-29 04:38:58,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 187. [2023-11-29 04:38:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 163 states have (on average 1.196319018404908) internal successors, (195), 163 states have internal predecessors, (195), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:38:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2023-11-29 04:38:58,954 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 124 [2023-11-29 04:38:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:58,954 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2023-11-29 04:38:58,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:38:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2023-11-29 04:38:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 04:38:58,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:58,956 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:58,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:38:59,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:38:59,157 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:59,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1126125299, now seen corresponding path program 1 times [2023-11-29 04:38:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:59,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507498705] [2023-11-29 04:38:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:59,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:59,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:59,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119151300] [2023-11-29 04:38:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:59,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:59,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:59,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:38:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:59,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 04:38:59,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:00,604 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 [2023-11-29 04:39:00,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-11-29 04:39:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 04:39:01,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:01,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:01,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507498705] [2023-11-29 04:39:01,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:01,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119151300] [2023-11-29 04:39:01,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119151300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:01,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:01,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 04:39:01,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883286682] [2023-11-29 04:39:01,449 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:01,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:39:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:01,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:39:01,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:39:01,450 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 04:39:02,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:02,354 INFO L93 Difference]: Finished difference Result 561 states and 679 transitions. [2023-11-29 04:39:02,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:39:02,354 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2023-11-29 04:39:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:02,357 INFO L225 Difference]: With dead ends: 561 [2023-11-29 04:39:02,357 INFO L226 Difference]: Without dead ends: 375 [2023-11-29 04:39:02,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:39:02,358 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 336 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:02,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 629 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:39:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-29 04:39:02,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 223. [2023-11-29 04:39:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 199 states have (on average 1.2060301507537687) internal successors, (240), 199 states have internal predecessors, (240), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:39:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 272 transitions. [2023-11-29 04:39:02,393 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 272 transitions. Word has length 124 [2023-11-29 04:39:02,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:02,393 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 272 transitions. [2023-11-29 04:39:02,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 04:39:02,394 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 272 transitions. [2023-11-29 04:39:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 04:39:02,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:02,395 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:02,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 04:39:02,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:39:02,596 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:02,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:02,596 INFO L85 PathProgramCache]: Analyzing trace with hash -818423300, now seen corresponding path program 1 times [2023-11-29 04:39:02,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:02,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202388675] [2023-11-29 04:39:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:02,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:02,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695322081] [2023-11-29 04:39:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:02,616 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:02,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:39:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:02,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 04:39:02,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:03,846 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 [2023-11-29 04:39:04,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:39:04,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:39:04,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:39:04,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 04:39:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 40 proven. 115 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-29 04:39:04,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:04,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202388675] [2023-11-29 04:39:04,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695322081] [2023-11-29 04:39:04,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695322081] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:04,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:04,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 04:39:04,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145150203] [2023-11-29 04:39:04,756 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:04,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:39:04,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:39:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:39:04,757 INFO L87 Difference]: Start difference. First operand 223 states and 272 transitions. Second operand has 15 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-29 04:39:05,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:05,760 INFO L93 Difference]: Finished difference Result 510 states and 617 transitions. [2023-11-29 04:39:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:39:05,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2023-11-29 04:39:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:05,762 INFO L225 Difference]: With dead ends: 510 [2023-11-29 04:39:05,762 INFO L226 Difference]: Without dead ends: 285 [2023-11-29 04:39:05,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:39:05,763 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 395 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:05,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 632 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:39:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-29 04:39:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 231. [2023-11-29 04:39:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 205 states have (on average 1.1853658536585365) internal successors, (243), 205 states have internal predecessors, (243), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:39:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 275 transitions. [2023-11-29 04:39:05,789 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 275 transitions. Word has length 124 [2023-11-29 04:39:05,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:05,790 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 275 transitions. [2023-11-29 04:39:05,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-29 04:39:05,790 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 275 transitions. [2023-11-29 04:39:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 04:39:05,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:05,792 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:05,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:39:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:39:05,994 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:05,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1827189877, now seen corresponding path program 1 times [2023-11-29 04:39:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:05,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840420141] [2023-11-29 04:39:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:06,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:06,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110252429] [2023-11-29 04:39:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:06,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:06,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:06,015 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:06,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:39:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:06,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:39:06,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:06,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:39:06,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 04:39:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:39:06,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:06,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:06,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840420141] [2023-11-29 04:39:06,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:06,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110252429] [2023-11-29 04:39:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110252429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:06,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:39:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204150819] [2023-11-29 04:39:06,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:06,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:39:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:06,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:39:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:39:06,219 INFO L87 Difference]: Start difference. First operand 231 states and 275 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:39:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:06,458 INFO L93 Difference]: Finished difference Result 616 states and 724 transitions. [2023-11-29 04:39:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:39:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 04:39:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:06,461 INFO L225 Difference]: With dead ends: 616 [2023-11-29 04:39:06,461 INFO L226 Difference]: Without dead ends: 386 [2023-11-29 04:39:06,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:39:06,462 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 174 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:06,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 395 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:39:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-29 04:39:06,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 234. [2023-11-29 04:39:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 208 states have (on average 1.1826923076923077) internal successors, (246), 208 states have internal predecessors, (246), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:39:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 278 transitions. [2023-11-29 04:39:06,490 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 278 transitions. Word has length 124 [2023-11-29 04:39:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:06,490 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 278 transitions. [2023-11-29 04:39:06,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:39:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 278 transitions. [2023-11-29 04:39:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 04:39:06,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:06,491 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:06,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:06,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:39:06,692 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:06,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1787719049, now seen corresponding path program 1 times [2023-11-29 04:39:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:06,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867170546] [2023-11-29 04:39:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:06,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:06,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667038373] [2023-11-29 04:39:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:06,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:06,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:06,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:06,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:39:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:06,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 04:39:06,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:08,088 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 [2023-11-29 04:39:08,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-11-29 04:39:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 04:39:08,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:08,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:08,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867170546] [2023-11-29 04:39:08,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:08,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667038373] [2023-11-29 04:39:08,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667038373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:08,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:08,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 04:39:08,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142336635] [2023-11-29 04:39:08,755 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:08,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:39:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:08,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:39:08,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:39:08,756 INFO L87 Difference]: Start difference. First operand 234 states and 278 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 04:39:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:09,555 INFO L93 Difference]: Finished difference Result 580 states and 684 transitions. [2023-11-29 04:39:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:39:09,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2023-11-29 04:39:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:09,558 INFO L225 Difference]: With dead ends: 580 [2023-11-29 04:39:09,558 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 04:39:09,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:39:09,559 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 263 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:09,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 574 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:39:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 04:39:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 237. [2023-11-29 04:39:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 211 states have (on average 1.180094786729858) internal successors, (249), 211 states have internal predecessors, (249), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:39:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 281 transitions. [2023-11-29 04:39:09,584 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 281 transitions. Word has length 124 [2023-11-29 04:39:09,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:09,585 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 281 transitions. [2023-11-29 04:39:09,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 04:39:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 281 transitions. [2023-11-29 04:39:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 04:39:09,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:09,586 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:09,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:09,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:09,786 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:09,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:09,787 INFO L85 PathProgramCache]: Analyzing trace with hash -117358722, now seen corresponding path program 1 times [2023-11-29 04:39:09,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:09,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046764615] [2023-11-29 04:39:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:09,806 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:09,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957480720] [2023-11-29 04:39:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:09,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:09,807 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:09,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:39:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:09,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:39:09,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:10,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:39:10,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 04:39:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 04:39:10,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:10,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046764615] [2023-11-29 04:39:10,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957480720] [2023-11-29 04:39:10,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957480720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:10,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:10,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:39:10,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446810836] [2023-11-29 04:39:10,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:10,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:39:10,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:10,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:39:10,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:39:10,018 INFO L87 Difference]: Start difference. First operand 237 states and 281 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:39:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:10,210 INFO L93 Difference]: Finished difference Result 595 states and 696 transitions. [2023-11-29 04:39:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:39:10,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 04:39:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:10,213 INFO L225 Difference]: With dead ends: 595 [2023-11-29 04:39:10,213 INFO L226 Difference]: Without dead ends: 359 [2023-11-29 04:39:10,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:39:10,214 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 136 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:10,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 395 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:39:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-29 04:39:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 237. [2023-11-29 04:39:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 211 states have (on average 1.1658767772511849) internal successors, (246), 211 states have internal predecessors, (246), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 04:39:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 278 transitions. [2023-11-29 04:39:10,251 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 278 transitions. Word has length 124 [2023-11-29 04:39:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:10,251 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 278 transitions. [2023-11-29 04:39:10,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 04:39:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 278 transitions. [2023-11-29 04:39:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 04:39:10,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:10,252 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:10,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 04:39:10,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:10,453 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:10,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash 562699648, now seen corresponding path program 1 times [2023-11-29 04:39:10,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:10,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088176719] [2023-11-29 04:39:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:10,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:10,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366853046] [2023-11-29 04:39:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:10,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:10,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:10,477 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:10,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ea680d-8476-447c-ab86-044d784ae23a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:39:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:10,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 04:39:10,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:11,723 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 [2023-11-29 04:39:11,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2023-11-29 04:39:12,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:39:12,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 21 [2023-11-29 04:39:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 04:39:12,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:13,064 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 04:39:13,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4241 treesize of output 3416 [2023-11-29 04:39:14,090 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:39:17,010 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:39:17,397 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 04:39:40,013 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:39:40,519 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 04:39:40,609 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:40:25,347 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:40:54,898 WARN L293 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:41:02,925 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:41:10,275 WARN L293 SmtUtils]: Spent 7.35s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:41:48,220 WARN L293 SmtUtils]: Spent 6.43s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:41:54,775 WARN L293 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:41:59,823 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:42:38,033 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:42:46,058 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:43:11,035 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:43:35,109 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:43:47,035 WARN L293 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:43:55,062 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:44:03,093 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:44:20,949 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:44:27,135 WARN L293 SmtUtils]: Spent 5.93s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:44:37,720 WARN L293 SmtUtils]: Spent 7.00s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:44:49,955 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:44:57,997 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:06,022 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:13,016 WARN L293 SmtUtils]: Spent 6.99s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:18,624 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:45:27,186 WARN L293 SmtUtils]: Spent 7.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:35,567 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:47,119 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:56,944 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:46:06,300 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 04:46:19,377 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:46:34,328 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:46:42,465 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:46:49,612 WARN L293 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:46:49,622 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:46:55,896 WARN L293 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:47:16,517 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:47:27,138 WARN L293 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:47:41,242 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:47:46,464 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:48:09,239 WARN L293 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:48:21,304 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:48:40,856 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:48:53,742 WARN L293 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:48:53,770 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:48:53,770 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:48:53,784 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:49:01,829 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:49:07,785 WARN L293 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:49:21,566 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:49:35,522 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:49:45,126 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:49:45,127 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:49:45,149 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:49:51,856 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:50:15,302 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:50:32,288 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 04:50:32,288 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 04:50:32,293 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 04:51:03,230 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:51:11,973 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:51:31,886 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:51:53,552 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:05,327 WARN L293 SmtUtils]: Spent 7.71s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:21,980 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:52:38,875 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:48,276 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:59,991 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 04:53:08,059 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:53:17,125 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:53:30,570 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)