./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array7_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array7_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:16:13,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:16:13,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:16:13,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:16:13,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:16:13,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:16:13,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:16:13,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:16:13,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:16:13,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:16:13,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:16:13,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:16:13,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:16:13,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:16:13,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:16:13,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:16:13,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:16:13,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:16:13,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:16:13,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:16:13,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:16:13,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:16:13,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:16:13,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:16:13,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:16:13,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:16:13,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:16:13,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:16:13,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:16:13,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:16:13,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:16:13,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:16:13,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:16:13,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:16:13,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:16:13,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:16:13,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:16:13,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:16:13,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:16:13,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:16:13,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:16:13,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:16:13,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:16:13,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:16:13,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:16:13,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:16:13,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:16:13,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:16:13,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:16:13,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:16:13,229 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:16:13,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:16:13,230 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:16:13,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:16:13,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:16:13,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:16:13,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:16:13,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:16:13,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:16:13,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:16:13,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:16:13,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:16:13,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:16:13,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:16:13,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:16:13,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:16:13,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:13,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:16:13,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:16:13,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:16:13,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:16:13,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:16:13,235 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:16:13,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:16:13,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:16:13,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2022-10-17 10:16:13,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:16:13,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:16:13,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:16:13,615 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:16:13,616 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:16:13,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/array-patterns/array7_pattern.c [2022-10-17 10:16:13,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/data/acdcd0148/a91108860fb64a49ac3a23c12535c69a/FLAG1638f6181 [2022-10-17 10:16:14,268 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:16:14,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/sv-benchmarks/c/array-patterns/array7_pattern.c [2022-10-17 10:16:14,281 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/data/acdcd0148/a91108860fb64a49ac3a23c12535c69a/FLAG1638f6181 [2022-10-17 10:16:14,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/data/acdcd0148/a91108860fb64a49ac3a23c12535c69a [2022-10-17 10:16:14,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:16:14,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:16:14,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:14,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:16:14,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:16:14,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd17f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14, skipping insertion in model container [2022-10-17 10:16:14,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:16:14,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:16:14,811 WARN L230 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_d572110f-4502-452e-bf8d-841fa1e74e17/sv-benchmarks/c/array-patterns/array7_pattern.c[1375,1388] [2022-10-17 10:16:14,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:14,849 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:16:14,861 WARN L230 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_d572110f-4502-452e-bf8d-841fa1e74e17/sv-benchmarks/c/array-patterns/array7_pattern.c[1375,1388] [2022-10-17 10:16:14,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:14,886 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:16:14,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14 WrapperNode [2022-10-17 10:16:14,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:14,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:14,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:16:14,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:16:14,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,942 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-10-17 10:16:14,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:14,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:16:14,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:16:14,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:16:14,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:16:14,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:16:14,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:16:14,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:16:14,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (1/1) ... [2022-10-17 10:16:14,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:15,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:15,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:16:15,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:16:15,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:16:15,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:16:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:16:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:16:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:16:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:16:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:16:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:16:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:16:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:16:15,127 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:16:15,129 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:16:15,345 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:16:15,352 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:16:15,352 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:16:15,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:15 BoogieIcfgContainer [2022-10-17 10:16:15,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:16:15,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:16:15,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:16:15,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:16:15,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:16:14" (1/3) ... [2022-10-17 10:16:15,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650a654b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:15, skipping insertion in model container [2022-10-17 10:16:15,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:14" (2/3) ... [2022-10-17 10:16:15,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650a654b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:15, skipping insertion in model container [2022-10-17 10:16:15,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:15" (3/3) ... [2022-10-17 10:16:15,380 INFO L112 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2022-10-17 10:16:15,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:16:15,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:16:15,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:16:15,515 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=LoopsAndPotentialCycles, 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;@7609728b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:16:15,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:16:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:16:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 10:16:15,530 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:15,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:15,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:15,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:15,538 INFO L85 PathProgramCache]: Analyzing trace with hash -440982883, now seen corresponding path program 1 times [2022-10-17 10:16:15,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:15,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021387171] [2022-10-17 10:16:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:15,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:15,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:16:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:15,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:15,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021387171] [2022-10-17 10:16:15,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021387171] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:15,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:15,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:16:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412841571] [2022-10-17 10:16:15,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:15,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:16:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:15,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:16:15,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:16:15,887 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:15,907 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2022-10-17 10:16:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:16:15,910 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-17 10:16:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:15,918 INFO L225 Difference]: With dead ends: 49 [2022-10-17 10:16:15,918 INFO L226 Difference]: Without dead ends: 22 [2022-10-17 10:16:15,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:16:15,926 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:15,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:16:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-17 10:16:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-10-17 10:16:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:16:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-10-17 10:16:15,963 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2022-10-17 10:16:15,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:15,964 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-10-17 10:16:15,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-10-17 10:16:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:16:15,967 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:15,967 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:15,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:16:15,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:15,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:15,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1396045698, now seen corresponding path program 1 times [2022-10-17 10:16:15,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:15,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10678585] [2022-10-17 10:16:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:15,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:16,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:16:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:16:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:16,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:16:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:16:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:16,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10678585] [2022-10-17 10:16:16,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10678585] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:16,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:16,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:16,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148816786] [2022-10-17 10:16:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:16,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:16,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:16,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:16,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:16,452 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:16:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:16,496 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-10-17 10:16:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:16,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-10-17 10:16:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:16,502 INFO L225 Difference]: With dead ends: 27 [2022-10-17 10:16:16,502 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 10:16:16,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:16,504 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:16,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:16:16,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 10:16:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-17 10:16:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:16:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-10-17 10:16:16,513 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2022-10-17 10:16:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:16,514 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-10-17 10:16:16,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:16:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-10-17 10:16:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 10:16:16,515 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:16,515 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:16,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:16:16,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:16,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1623352868, now seen corresponding path program 1 times [2022-10-17 10:16:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78061487] [2022-10-17 10:16:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:16,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:16,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:16:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:16,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:16:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:16:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:16:16,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:16,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78061487] [2022-10-17 10:16:16,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78061487] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:16,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:16,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:16:16,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740169935] [2022-10-17 10:16:16,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:16,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:16:16,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:16:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:16,801 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:16:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:16,877 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-10-17 10:16:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:16:16,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-10-17 10:16:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:16,882 INFO L225 Difference]: With dead ends: 43 [2022-10-17 10:16:16,882 INFO L226 Difference]: Without dead ends: 26 [2022-10-17 10:16:16,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:16,891 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:16,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 61 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:16:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-17 10:16:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-10-17 10:16:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:16:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-10-17 10:16:16,912 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2022-10-17 10:16:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:16,912 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-10-17 10:16:16,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:16:16,913 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-10-17 10:16:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 10:16:16,914 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:16,915 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:16:16,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:16,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1083978846, now seen corresponding path program 1 times [2022-10-17 10:16:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:16,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009058477] [2022-10-17 10:16:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:16,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:16:16,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020872968] [2022-10-17 10:16:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:16,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:16,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:16:16,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:16:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:17,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:16:17,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:16:17,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:16:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:16:17,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:17,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009058477] [2022-10-17 10:16:17,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:16:17,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020872968] [2022-10-17 10:16:17,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020872968] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:16:17,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:16:17,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2022-10-17 10:16:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513262044] [2022-10-17 10:16:17,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:16:17,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:16:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:17,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:16:17,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:16:17,679 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:16:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:17,964 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-10-17 10:16:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:16:17,965 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 31 [2022-10-17 10:16:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:17,966 INFO L225 Difference]: With dead ends: 73 [2022-10-17 10:16:17,966 INFO L226 Difference]: Without dead ends: 42 [2022-10-17 10:16:17,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-10-17 10:16:17,968 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:17,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 110 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:16:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-17 10:16:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2022-10-17 10:16:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:16:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-17 10:16:17,975 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 31 [2022-10-17 10:16:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:17,975 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-17 10:16:17,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:16:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-17 10:16:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-17 10:16:17,977 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:17,977 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:18,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:18,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:18,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1214758882, now seen corresponding path program 2 times [2022-10-17 10:16:18,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961726042] [2022-10-17 10:16:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:18,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:18,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:16:18,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779090343] [2022-10-17 10:16:18,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:16:18,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:18,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:18,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:16:18,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:16:18,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:16:18,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:16:18,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:16:18,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:16:18,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:16:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:16:18,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:18,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961726042] [2022-10-17 10:16:18,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:16:18,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779090343] [2022-10-17 10:16:18,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779090343] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:16:18,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:16:18,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-10-17 10:16:18,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238002296] [2022-10-17 10:16:18,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:16:18,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:16:18,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:18,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:16:18,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:16:18,605 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-17 10:16:18,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:18,790 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-10-17 10:16:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:16:18,791 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2022-10-17 10:16:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:18,794 INFO L225 Difference]: With dead ends: 40 [2022-10-17 10:16:18,795 INFO L226 Difference]: Without dead ends: 36 [2022-10-17 10:16:18,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:16:18,796 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:18,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 68 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:16:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-17 10:16:18,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-17 10:16:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:16:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-10-17 10:16:18,808 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 35 [2022-10-17 10:16:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:18,809 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-10-17 10:16:18,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-17 10:16:18,809 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-10-17 10:16:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-17 10:16:18,810 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:18,810 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:18,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:19,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:19,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:19,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:19,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1618850078, now seen corresponding path program 3 times [2022-10-17 10:16:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:19,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154052443] [2022-10-17 10:16:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:19,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:19,032 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:16:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016767877] [2022-10-17 10:16:19,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:16:19,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:19,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:19,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:16:19,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d572110f-4502-452e-bf8d-841fa1e74e17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:16:19,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-17 10:16:19,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:16:19,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 86 conjunts are in the unsatisfiable core [2022-10-17 10:16:19,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:19,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-10-17 10:16:19,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:19,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-10-17 10:16:19,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-10-17 10:16:19,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 [2022-10-17 10:16:19,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-10-17 10:16:19,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:19,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-10-17 10:16:19,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-10-17 10:16:19,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:19,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 24 [2022-10-17 10:16:19,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:19,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 25 [2022-10-17 10:16:19,955 INFO L356 Elim1Store]: treesize reduction 41, result has 10.9 percent of original size [2022-10-17 10:16:19,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 113 [2022-10-17 10:16:19,988 INFO L356 Elim1Store]: treesize reduction 68, result has 6.8 percent of original size [2022-10-17 10:16:19,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 118 [2022-10-17 10:16:20,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:20,025 INFO L356 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2022-10-17 10:16:20,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 76 [2022-10-17 10:16:20,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:20,071 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-17 10:16:20,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2022-10-17 10:16:20,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-10-17 10:16:20,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 11 [2022-10-17 10:16:20,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-10-17 10:16:22,175 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 10:16:22,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 1150 treesize of output 1067 [2022-10-17 10:16:22,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:16:22,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:16:22,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:16:22,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,461 INFO L244 Elim1Store]: Index analysis took 213 ms [2022-10-17 10:16:22,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 440 treesize of output 506 [2022-10-17 10:16:22,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:16:22,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:16:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:16:22,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,639 INFO L244 Elim1Store]: Index analysis took 101 ms [2022-10-17 10:16:22,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 648 treesize of output 834 [2022-10-17 10:16:22,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:22,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 386 treesize of output 294 [2022-10-17 10:16:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:23,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:23,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:23,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:23,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:23,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:23,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-10-17 10:16:33,844 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 10:16:33,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 235 treesize of output 199 [2022-10-17 10:16:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:33,975 INFO L356 Elim1Store]: treesize reduction 183, result has 5.2 percent of original size [2022-10-17 10:16:33,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 207 treesize of output 120 [2022-10-17 10:16:34,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:34,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:34,170 INFO L356 Elim1Store]: treesize reduction 125, result has 7.4 percent of original size [2022-10-17 10:16:34,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 140 treesize of output 80 [2022-10-17 10:16:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:16:35,139 INFO L328 TraceCheckSpWp]: Computing backward predicates...